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-sta.h"
  44 #include "iwl-helpers.h"
  45 #include "iwl-agn.h"
  46 #include "iwl-agn-hw.h"
  47 #include "iwl-5000-hw.h"
  48 #include "iwl-trans.h"
  49 #include "iwl-shared.h"
  50 #include "iwl-pci.h"
  51
  52 /* Highest firmware API version supported */
  53 #define IWL5000_UCODE_API_MAX 5
  54 #define IWL5150_UCODE_API_MAX 2
  55
  56 /* Lowest firmware API version supported */
  57 #define IWL5000_UCODE_API_MIN 1
  58 #define IWL5150_UCODE_API_MIN 1
  59
  60 #define IWL5000_FW_PRE "iwlwifi-5000-"
  61 #define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
  62
  63 #define IWL5150_FW_PRE "iwlwifi-5150-"
  64 #define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
  65
  66 /* NIC configuration for 5000 series */
  67 static void iwl5000_nic_config(struct iwl_priv *priv)
  68 {
  69         unsigned long flags;
  70
  71         iwl_rf_config(priv);
  72
  73         spin_lock_irqsave(&priv->shrd->lock, flags);
  74
  75         /* W/A : NIC is stuck in a reset state after Early PCIe power off
  76          * (PCIe power is lost before PERST# is asserted),
  77          * causing ME FW to lose ownership and not being able to obtain it back.
  78          */
  79         iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG,
  80                                 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
  81                                 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
  82
  83
  84         spin_unlock_irqrestore(&priv->shrd->lock, flags);
  85 }
  86
  87 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
  88         .min_nrg_cck = 100,
  89         .max_nrg_cck = 0, /* not used, set to 0 */
  90         .auto_corr_min_ofdm = 90,
  91         .auto_corr_min_ofdm_mrc = 170,
  92         .auto_corr_min_ofdm_x1 = 105,
  93         .auto_corr_min_ofdm_mrc_x1 = 220,
  94
  95         .auto_corr_max_ofdm = 120,
  96         .auto_corr_max_ofdm_mrc = 210,
  97         .auto_corr_max_ofdm_x1 = 120,
  98         .auto_corr_max_ofdm_mrc_x1 = 240,
  99
 100         .auto_corr_min_cck = 125,
 101         .auto_corr_max_cck = 200,
 102         .auto_corr_min_cck_mrc = 200,
 103         .auto_corr_max_cck_mrc = 400,
 104         .nrg_th_cck = 100,
 105         .nrg_th_ofdm = 100,
 106
 107         .barker_corr_th_min = 190,
 108         .barker_corr_th_min_mrc = 390,
 109         .nrg_th_cca = 62,
 110 };
 111
 112 static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
 113         .min_nrg_cck = 95,
 114         .max_nrg_cck = 0, /* not used, set to 0 */
 115         .auto_corr_min_ofdm = 90,
 116         .auto_corr_min_ofdm_mrc = 170,
 117         .auto_corr_min_ofdm_x1 = 105,
 118         .auto_corr_min_ofdm_mrc_x1 = 220,
 119
 120         .auto_corr_max_ofdm = 120,
 121         .auto_corr_max_ofdm_mrc = 210,
 122         /* max = min for performance bug in 5150 DSP */
 123         .auto_corr_max_ofdm_x1 = 105,
 124         .auto_corr_max_ofdm_mrc_x1 = 220,
 125
 126         .auto_corr_min_cck = 125,
 127         .auto_corr_max_cck = 200,
 128         .auto_corr_min_cck_mrc = 170,
 129         .auto_corr_max_cck_mrc = 400,
 130         .nrg_th_cck = 95,
 131         .nrg_th_ofdm = 95,
 132
 133         .barker_corr_th_min = 190,
 134         .barker_corr_th_min_mrc = 390,
 135         .nrg_th_cca = 62,
 136 };
 137
 138 static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
 139 {
 140         const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
 141         s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
 142                         iwl_temp_calib_to_offset(priv);
 143
 144         hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
 145 }
 146
 147 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
 148 {
 149         /* want Celsius */
 150         hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
 151 }
 152
 153 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 154 {
 155         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 156             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 157                 priv->cfg->base_params->num_of_queues =
 158                         iwlagn_mod_params.num_of_queues;
 159
 160         hw_params(priv).max_txq_num = priv->cfg->base_params->num_of_queues;
 161         hw_params(priv).max_stations = IWLAGN_STATION_COUNT;
 162         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 163
 164         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 165         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 166
 167         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 168                                         BIT(IEEE80211_BAND_5GHZ);
 169
 170         hw_params(priv).tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 171         hw_params(priv).rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 172         hw_params(priv).valid_tx_ant = priv->cfg->valid_tx_ant;
 173         hw_params(priv).valid_rx_ant = priv->cfg->valid_rx_ant;
 174
 175         iwl5000_set_ct_threshold(priv);
 176
 177         /* Set initial sensitivity parameters */
 178         /* Set initial calibration set */
 179         hw_params(priv).sens = &iwl5000_sensitivity;
 180         hw_params(priv).calib_init_cfg =
 181                 BIT(IWL_CALIB_XTAL)             |
 182                 BIT(IWL_CALIB_LO)               |
 183                 BIT(IWL_CALIB_TX_IQ)            |
 184                 BIT(IWL_CALIB_TX_IQ_PERD)       |
 185                 BIT(IWL_CALIB_BASE_BAND);
 186
 187         return 0;
 188 }
 189
 190 static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
 191 {
 192         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 193             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 194                 priv->cfg->base_params->num_of_queues =
 195                         iwlagn_mod_params.num_of_queues;
 196
 197         hw_params(priv).max_txq_num = priv->cfg->base_params->num_of_queues;
 198         hw_params(priv).max_stations = IWLAGN_STATION_COUNT;
 199         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 200
 201         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 202         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 203
 204         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 205                                         BIT(IEEE80211_BAND_5GHZ);
 206
 207         hw_params(priv).tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 208         hw_params(priv).rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 209         hw_params(priv).valid_tx_ant = priv->cfg->valid_tx_ant;
 210         hw_params(priv).valid_rx_ant = priv->cfg->valid_rx_ant;
 211
 212         iwl5150_set_ct_threshold(priv);
 213
 214         /* Set initial sensitivity parameters */
 215         /* Set initial calibration set */
 216         hw_params(priv).sens = &iwl5150_sensitivity;
 217         hw_params(priv).calib_init_cfg =
 218                 BIT(IWL_CALIB_LO)               |
 219                 BIT(IWL_CALIB_TX_IQ)            |
 220                 BIT(IWL_CALIB_BASE_BAND);
 221         if (priv->cfg->need_dc_calib)
 222                 hw_params(priv).calib_init_cfg |= BIT(IWL_CALIB_DC);
 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);
 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 iwl_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 };
 358 static struct iwl_ht_params iwl5000_ht_params = {
 359         .ht_greenfield_support = true,
 360 };
 361
 362 #define IWL_DEVICE_5000                                         \
 363         .fw_name_pre = IWL5000_FW_PRE,                          \
 364         .ucode_api_max = IWL5000_UCODE_API_MAX,                 \
 365         .ucode_api_min = IWL5000_UCODE_API_MIN,                 \
 366         .eeprom_ver = EEPROM_5000_EEPROM_VERSION,               \
 367         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,       \
 368         .lib = &iwl5000_lib,                                    \
 369         .base_params = &iwl5000_base_params,                    \
 370         .led_mode = IWL_LED_BLINK
 371
 372 struct iwl_cfg iwl5300_agn_cfg = {
 373         .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
 374         IWL_DEVICE_5000,
 375         /* at least EEPROM 0x11A has wrong info */
 376         .valid_tx_ant = ANT_ABC,        /* .cfg overwrite */
 377         .valid_rx_ant = ANT_ABC,        /* .cfg overwrite */
 378         .ht_params = &iwl5000_ht_params,
 379 };
 380
 381 struct iwl_cfg iwl5100_bgn_cfg = {
 382         .name = "Intel(R) WiFi Link 5100 BGN",
 383         IWL_DEVICE_5000,
 384         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 385         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 386         .ht_params = &iwl5000_ht_params,
 387 };
 388
 389 struct iwl_cfg iwl5100_abg_cfg = {
 390         .name = "Intel(R) WiFi Link 5100 ABG",
 391         IWL_DEVICE_5000,
 392         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 393         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 394 };
 395
 396 struct iwl_cfg iwl5100_agn_cfg = {
 397         .name = "Intel(R) WiFi Link 5100 AGN",
 398         IWL_DEVICE_5000,
 399         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 400         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 401         .ht_params = &iwl5000_ht_params,
 402 };
 403
 404 struct iwl_cfg iwl5350_agn_cfg = {
 405         .name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
 406         .fw_name_pre = IWL5000_FW_PRE,
 407         .ucode_api_max = IWL5000_UCODE_API_MAX,
 408         .ucode_api_min = IWL5000_UCODE_API_MIN,
 409         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,
 410         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
 411         .lib = &iwl5000_lib,
 412         .base_params = &iwl5000_base_params,
 413         .ht_params = &iwl5000_ht_params,
 414         .led_mode = IWL_LED_BLINK,
 415         .internal_wimax_coex = true,
 416 };
 417
 418 #define IWL_DEVICE_5150                                         \
 419         .fw_name_pre = IWL5150_FW_PRE,                          \
 420         .ucode_api_max = IWL5150_UCODE_API_MAX,                 \
 421         .ucode_api_min = IWL5150_UCODE_API_MIN,                 \
 422         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,               \
 423         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,       \
 424         .lib = &iwl5150_lib,                                    \
 425         .base_params = &iwl5000_base_params,                    \
 426         .need_dc_calib = true,                                  \
 427         .led_mode = IWL_LED_BLINK,                              \
 428         .internal_wimax_coex = true
 429
 430 struct iwl_cfg iwl5150_agn_cfg = {
 431         .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
 432         IWL_DEVICE_5150,
 433         .ht_params = &iwl5000_ht_params,
 434
 435 };
 436
 437 struct iwl_cfg iwl5150_abg_cfg = {
 438         .name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
 439         IWL_DEVICE_5150,
 440 };
 441
 442 MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
 443 MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));