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 <linux/wireless.h>
  35 #include <net/mac80211.h>
  36 #include <linux/etherdevice.h>
  37 #include <asm/unaligned.h>
  38 #include <linux/stringify.h>
  39
  40 #include "iwl-eeprom.h"
  41 #include "iwl-dev.h"
  42 #include "iwl-core.h"
  43 #include "iwl-io.h"
  44 #include "iwl-sta.h"
  45 #include "iwl-helpers.h"
  46 #include "iwl-agn.h"
  47 #include "iwl-agn-hw.h"
  48 #include "iwl-5000-hw.h"
  49 #include "iwl-trans.h"
  50
  51 /* Highest firmware API version supported */
  52 #define IWL5000_UCODE_API_MAX 5
  53 #define IWL5150_UCODE_API_MAX 2
  54
  55 /* Lowest firmware API version supported */
  56 #define IWL5000_UCODE_API_MIN 1
  57 #define IWL5150_UCODE_API_MIN 1
  58
  59 #define IWL5000_FW_PRE "iwlwifi-5000-"
  60 #define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode"
  61
  62 #define IWL5150_FW_PRE "iwlwifi-5150-"
  63 #define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode"
  64
  65 /* NIC configuration for 5000 series */
  66 static void iwl5000_nic_config(struct iwl_priv *priv)
  67 {
  68         unsigned long flags;
  69
  70         iwl_rf_config(priv);
  71
  72         spin_lock_irqsave(&priv->lock, flags);
  73
  74         /* W/A : NIC is stuck in a reset state after Early PCIe power off
  75          * (PCIe power is lost before PERST# is asserted),
  76          * causing ME FW to lose ownership and not being able to obtain it back.
  77          */
  78         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
  79                                 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
  80                                 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
  81
  82
  83         spin_unlock_irqrestore(&priv->lock, flags);
  84 }
  85
  86 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
  87         .min_nrg_cck = 95,
  88         .max_nrg_cck = 0, /* not used, set to 0 */
  89         .auto_corr_min_ofdm = 90,
  90         .auto_corr_min_ofdm_mrc = 170,
  91         .auto_corr_min_ofdm_x1 = 120,
  92         .auto_corr_min_ofdm_mrc_x1 = 240,
  93
  94         .auto_corr_max_ofdm = 120,
  95         .auto_corr_max_ofdm_mrc = 210,
  96         .auto_corr_max_ofdm_x1 = 120,
  97         .auto_corr_max_ofdm_mrc_x1 = 240,
  98
  99         .auto_corr_min_cck = 125,
 100         .auto_corr_max_cck = 200,
 101         .auto_corr_min_cck_mrc = 170,
 102         .auto_corr_max_cck_mrc = 400,
 103         .nrg_th_cck = 95,
 104         .nrg_th_ofdm = 95,
 105
 106         .barker_corr_th_min = 190,
 107         .barker_corr_th_min_mrc = 390,
 108         .nrg_th_cca = 62,
 109 };
 110
 111 static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
 112         .min_nrg_cck = 95,
 113         .max_nrg_cck = 0, /* not used, set to 0 */
 114         .auto_corr_min_ofdm = 90,
 115         .auto_corr_min_ofdm_mrc = 170,
 116         .auto_corr_min_ofdm_x1 = 105,
 117         .auto_corr_min_ofdm_mrc_x1 = 220,
 118
 119         .auto_corr_max_ofdm = 120,
 120         .auto_corr_max_ofdm_mrc = 210,
 121         /* max = min for performance bug in 5150 DSP */
 122         .auto_corr_max_ofdm_x1 = 105,
 123         .auto_corr_max_ofdm_mrc_x1 = 220,
 124
 125         .auto_corr_min_cck = 125,
 126         .auto_corr_max_cck = 200,
 127         .auto_corr_min_cck_mrc = 170,
 128         .auto_corr_max_cck_mrc = 400,
 129         .nrg_th_cck = 95,
 130         .nrg_th_ofdm = 95,
 131
 132         .barker_corr_th_min = 190,
 133         .barker_corr_th_min_mrc = 390,
 134         .nrg_th_cca = 62,
 135 };
 136
 137 static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
 138 {
 139         const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
 140         s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
 141                         iwl_temp_calib_to_offset(priv);
 142
 143         priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
 144 }
 145
 146 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
 147 {
 148         /* want Celsius */
 149         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
 150 }
 151
 152 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 153 {
 154         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 155             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 156                 priv->cfg->base_params->num_of_queues =
 157                         iwlagn_mod_params.num_of_queues;
 158
 159         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
 160         priv->hw_params.scd_bc_tbls_size =
 161                         priv->cfg->base_params->num_of_queues *
 162                         sizeof(struct iwlagn_scd_bc_tbl);
 163         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 164         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
 165         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 166
 167         priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
 168         priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
 169
 170         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 171                                         BIT(IEEE80211_BAND_5GHZ);
 172
 173         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 174         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 175         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 176         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 177
 178         iwl5000_set_ct_threshold(priv);
 179
 180         /* Set initial sensitivity parameters */
 181         /* Set initial calibration set */
 182         priv->hw_params.sens = &iwl5000_sensitivity;
 183         priv->hw_params.calib_init_cfg =
 184                 BIT(IWL_CALIB_XTAL)             |
 185                 BIT(IWL_CALIB_LO)               |
 186                 BIT(IWL_CALIB_TX_IQ)            |
 187                 BIT(IWL_CALIB_TX_IQ_PERD)       |
 188                 BIT(IWL_CALIB_BASE_BAND);
 189
 190         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
 191
 192         return 0;
 193 }
 194
 195 static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
 196 {
 197         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 198             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 199                 priv->cfg->base_params->num_of_queues =
 200                         iwlagn_mod_params.num_of_queues;
 201
 202         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
 203         priv->hw_params.scd_bc_tbls_size =
 204                         priv->cfg->base_params->num_of_queues *
 205                         sizeof(struct iwlagn_scd_bc_tbl);
 206         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 207         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
 208         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 209
 210         priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
 211         priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
 212
 213         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 214                                         BIT(IEEE80211_BAND_5GHZ);
 215
 216         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 217         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 218         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 219         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 220
 221         iwl5150_set_ct_threshold(priv);
 222
 223         /* Set initial sensitivity parameters */
 224         /* Set initial calibration set */
 225         priv->hw_params.sens = &iwl5150_sensitivity;
 226         priv->hw_params.calib_init_cfg =
 227                 BIT(IWL_CALIB_LO)               |
 228                 BIT(IWL_CALIB_TX_IQ)            |
 229                 BIT(IWL_CALIB_BASE_BAND);
 230         if (priv->cfg->need_dc_calib)
 231                 priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
 232
 233         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
 234
 235         return 0;
 236 }
 237
 238 static void iwl5150_temperature(struct iwl_priv *priv)
 239 {
 240         u32 vt = 0;
 241         s32 offset =  iwl_temp_calib_to_offset(priv);
 242
 243         vt = le32_to_cpu(priv->statistics.common.temperature);
 244         vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
 245         /* now vt hold the temperature in Kelvin */
 246         priv->temperature = KELVIN_TO_CELSIUS(vt);
 247         iwl_tt_handler(priv);
 248 }
 249
 250 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 251                                      struct ieee80211_channel_switch *ch_switch)
 252 {
 253         /*
 254          * MULTI-FIXME
 255          * See iwl_mac_channel_switch.
 256          */
 257         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 258         struct iwl5000_channel_switch_cmd cmd;
 259         const struct iwl_channel_info *ch_info;
 260         u32 switch_time_in_usec, ucode_switch_time;
 261         u16 ch;
 262         u32 tsf_low;
 263         u8 switch_count;
 264         u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 265         struct ieee80211_vif *vif = ctx->vif;
 266         struct iwl_host_cmd hcmd = {
 267                 .id = REPLY_CHANNEL_SWITCH,
 268                 .len = { sizeof(cmd), },
 269                 .flags = CMD_SYNC,
 270                 .data = { &cmd, },
 271         };
 272
 273         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 274         ch = ch_switch->channel->hw_value;
 275         IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
 276                       ctx->active.channel, ch);
 277         cmd.channel = cpu_to_le16(ch);
 278         cmd.rxon_flags = ctx->staging.flags;
 279         cmd.rxon_filter_flags = ctx->staging.filter_flags;
 280         switch_count = ch_switch->count;
 281         tsf_low = ch_switch->timestamp & 0x0ffffffff;
 282         /*
 283          * calculate the ucode channel switch time
 284          * adding TSF as one of the factor for when to switch
 285          */
 286         if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
 287                 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
 288                     beacon_interval)) {
 289                         switch_count -= (priv->ucode_beacon_time -
 290                                 tsf_low) / beacon_interval;
 291                 } else
 292                         switch_count = 0;
 293         }
 294         if (switch_count <= 1)
 295                 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
 296         else {
 297                 switch_time_in_usec =
 298                         vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
 299                 ucode_switch_time = iwl_usecs_to_beacons(priv,
 300                                                          switch_time_in_usec,
 301                                                          beacon_interval);
 302                 cmd.switch_time = iwl_add_beacon_time(priv,
 303                                                       priv->ucode_beacon_time,
 304                                                       ucode_switch_time,
 305                                                       beacon_interval);
 306         }
 307         IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
 308                       cmd.switch_time);
 309         ch_info = iwl_get_channel_info(priv, priv->band, ch);
 310         if (ch_info)
 311                 cmd.expect_beacon = is_channel_radar(ch_info);
 312         else {
 313                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
 314                         ctx->active.channel, ch);
 315                 return -EFAULT;
 316         }
 317
 318         return trans_send_cmd(&priv->trans, &hcmd);
 319 }
 320
 321 static struct iwl_lib_ops iwl5000_lib = {
 322         .set_hw_params = iwl5000_hw_set_hw_params,
 323         .set_channel_switch = iwl5000_hw_channel_switch,
 324         .nic_config = iwl5000_nic_config,
 325         .eeprom_ops = {
 326                 .regulatory_bands = {
 327                         EEPROM_REG_BAND_1_CHANNELS,
 328                         EEPROM_REG_BAND_2_CHANNELS,
 329                         EEPROM_REG_BAND_3_CHANNELS,
 330                         EEPROM_REG_BAND_4_CHANNELS,
 331                         EEPROM_REG_BAND_5_CHANNELS,
 332                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 333                         EEPROM_REG_BAND_52_HT40_CHANNELS
 334                 },
 335         },
 336         .temperature = iwlagn_temperature,
 337 };
 338
 339 static struct iwl_lib_ops iwl5150_lib = {
 340         .set_hw_params = iwl5150_hw_set_hw_params,
 341         .set_channel_switch = iwl5000_hw_channel_switch,
 342         .nic_config = iwl5000_nic_config,
 343         .eeprom_ops = {
 344                 .regulatory_bands = {
 345                         EEPROM_REG_BAND_1_CHANNELS,
 346                         EEPROM_REG_BAND_2_CHANNELS,
 347                         EEPROM_REG_BAND_3_CHANNELS,
 348                         EEPROM_REG_BAND_4_CHANNELS,
 349                         EEPROM_REG_BAND_5_CHANNELS,
 350                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 351                         EEPROM_REG_BAND_52_HT40_CHANNELS
 352                 },
 353         },
 354         .temperature = iwl5150_temperature,
 355 };
 356
 357 static struct iwl_base_params iwl5000_base_params = {
 358         .eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
 359         .num_of_queues = IWLAGN_NUM_QUEUES,
 360         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 361         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
 362         .led_compensation = 51,
 363         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 364         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
 365         .chain_noise_scale = 1000,
 366         .wd_timeout = IWL_LONG_WD_TIMEOUT,
 367         .max_event_log_size = 512,
 368         .no_idle_support = true,
 369 };
 370 static struct iwl_ht_params iwl5000_ht_params = {
 371         .ht_greenfield_support = true,
 372 };
 373
 374 #define IWL_DEVICE_5000                                         \
 375         .fw_name_pre = IWL5000_FW_PRE,                          \
 376         .ucode_api_max = IWL5000_UCODE_API_MAX,                 \
 377         .ucode_api_min = IWL5000_UCODE_API_MIN,                 \
 378         .eeprom_ver = EEPROM_5000_EEPROM_VERSION,               \
 379         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,       \
 380         .lib = &iwl5000_lib,                                    \
 381         .base_params = &iwl5000_base_params,                    \
 382         .led_mode = IWL_LED_BLINK
 383
 384 struct iwl_cfg iwl5300_agn_cfg = {
 385         .name = "Intel(R) Ultimate N WiFi Link 5300 AGN",
 386         IWL_DEVICE_5000,
 387         /* at least EEPROM 0x11A has wrong info */
 388         .valid_tx_ant = ANT_ABC,        /* .cfg overwrite */
 389         .valid_rx_ant = ANT_ABC,        /* .cfg overwrite */
 390         .ht_params = &iwl5000_ht_params,
 391 };
 392
 393 struct iwl_cfg iwl5100_bgn_cfg = {
 394         .name = "Intel(R) WiFi Link 5100 BGN",
 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 iwl5100_abg_cfg = {
 402         .name = "Intel(R) WiFi Link 5100 ABG",
 403         IWL_DEVICE_5000,
 404         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 405         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 406 };
 407
 408 struct iwl_cfg iwl5100_agn_cfg = {
 409         .name = "Intel(R) WiFi Link 5100 AGN",
 410         IWL_DEVICE_5000,
 411         .valid_tx_ant = ANT_B,          /* .cfg overwrite */
 412         .valid_rx_ant = ANT_AB,         /* .cfg overwrite */
 413         .ht_params = &iwl5000_ht_params,
 414 };
 415
 416 struct iwl_cfg iwl5350_agn_cfg = {
 417         .name = "Intel(R) WiMAX/WiFi Link 5350 AGN",
 418         .fw_name_pre = IWL5000_FW_PRE,
 419         .ucode_api_max = IWL5000_UCODE_API_MAX,
 420         .ucode_api_min = IWL5000_UCODE_API_MIN,
 421         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,
 422         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,
 423         .lib = &iwl5000_lib,
 424         .base_params = &iwl5000_base_params,
 425         .ht_params = &iwl5000_ht_params,
 426         .led_mode = IWL_LED_BLINK,
 427         .internal_wimax_coex = true,
 428 };
 429
 430 #define IWL_DEVICE_5150                                         \
 431         .fw_name_pre = IWL5150_FW_PRE,                          \
 432         .ucode_api_max = IWL5150_UCODE_API_MAX,                 \
 433         .ucode_api_min = IWL5150_UCODE_API_MIN,                 \
 434         .eeprom_ver = EEPROM_5050_EEPROM_VERSION,               \
 435         .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION,       \
 436         .lib = &iwl5150_lib,                                    \
 437         .base_params = &iwl5000_base_params,                    \
 438         .need_dc_calib = true,                                  \
 439         .led_mode = IWL_LED_BLINK,                              \
 440         .internal_wimax_coex = true
 441
 442 struct iwl_cfg iwl5150_agn_cfg = {
 443         .name = "Intel(R) WiMAX/WiFi Link 5150 AGN",
 444         IWL_DEVICE_5150,
 445         .ht_params = &iwl5000_ht_params,
 446
 447 };
 448
 449 struct iwl_cfg iwl5150_abg_cfg = {
 450         .name = "Intel(R) WiMAX/WiFi Link 5150 ABG",
 451         IWL_DEVICE_5150,
 452 };
 453
 454 MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX));
 455 MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX));