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-helpers.h"
  44 #include "iwl-agn.h"
  45 #include "iwl-agn-hw.h"
  46 #include "iwl-5000-hw.h"
  47 #include "iwl-trans.h"
  48 #include "iwl-shared.h"
  49 #include "iwl-cfg.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->shrd->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(bus(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->shrd->lock, flags);
  84 }
  85
  86 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
  87         .min_nrg_cck = 100,
  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 = 105,
  92         .auto_corr_min_ofdm_mrc_x1 = 220,
  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 = 200,
 102         .auto_corr_max_cck_mrc = 400,
 103         .nrg_th_cck = 100,
 104         .nrg_th_ofdm = 100,
 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         hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef;
 144 }
 145
 146 static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
 147 {
 148         /* want Celsius */
 149         hw_params(priv).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         hw_params(priv).max_txq_num = priv->cfg->base_params->num_of_queues;
 160         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 161
 162         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 163         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 164
 165         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 166                                         BIT(IEEE80211_BAND_5GHZ);
 167
 168         hw_params(priv).tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 169         hw_params(priv).rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 170         hw_params(priv).valid_tx_ant = priv->cfg->valid_tx_ant;
 171         hw_params(priv).valid_rx_ant = priv->cfg->valid_rx_ant;
 172
 173         iwl5000_set_ct_threshold(priv);
 174
 175         /* Set initial sensitivity parameters */
 176         /* Set initial calibration set */
 177         hw_params(priv).sens = &iwl5000_sensitivity;
 178         hw_params(priv).calib_init_cfg =
 179                 BIT(IWL_CALIB_XTAL)             |
 180                 BIT(IWL_CALIB_LO)               |
 181                 BIT(IWL_CALIB_TX_IQ)            |
 182                 BIT(IWL_CALIB_TX_IQ_PERD)       |
 183                 BIT(IWL_CALIB_BASE_BAND);
 184
 185         return 0;
 186 }
 187
 188 static int iwl5150_hw_set_hw_params(struct iwl_priv *priv)
 189 {
 190         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 191             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 192                 priv->cfg->base_params->num_of_queues =
 193                         iwlagn_mod_params.num_of_queues;
 194
 195         hw_params(priv).max_txq_num = priv->cfg->base_params->num_of_queues;
 196         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 197
 198         hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE;
 199         hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE;
 200
 201         hw_params(priv).ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 202                                         BIT(IEEE80211_BAND_5GHZ);
 203
 204         hw_params(priv).tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 205         hw_params(priv).rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 206         hw_params(priv).valid_tx_ant = priv->cfg->valid_tx_ant;
 207         hw_params(priv).valid_rx_ant = priv->cfg->valid_rx_ant;
 208
 209         iwl5150_set_ct_threshold(priv);
 210
 211         /* Set initial sensitivity parameters */
 212         /* Set initial calibration set */
 213         hw_params(priv).sens = &iwl5150_sensitivity;
 214         hw_params(priv).calib_init_cfg =
 215                 BIT(IWL_CALIB_LO)               |
 216                 BIT(IWL_CALIB_TX_IQ)            |
 217                 BIT(IWL_CALIB_BASE_BAND);
 218         if (priv->cfg->need_dc_calib)
 219                 hw_params(priv).calib_init_cfg |= BIT(IWL_CALIB_DC);
 220
 221         return 0;
 222 }
 223
 224 static void iwl5150_temperature(struct iwl_priv *priv)
 225 {
 226         u32 vt = 0;
 227         s32 offset =  iwl_temp_calib_to_offset(priv);
 228
 229         vt = le32_to_cpu(priv->statistics.common.temperature);
 230         vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
 231         /* now vt hold the temperature in Kelvin */
 232         priv->temperature = KELVIN_TO_CELSIUS(vt);
 233         iwl_tt_handler(priv);
 234 }
 235
 236 static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
 237                                      struct ieee80211_channel_switch *ch_switch)
 238 {
 239         /*
 240          * MULTI-FIXME
 241          * See iwlagn_mac_channel_switch.
 242          */
 243         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 244         struct iwl5000_channel_switch_cmd cmd;
 245         const struct iwl_channel_info *ch_info;
 246         u32 switch_time_in_usec, ucode_switch_time;
 247         u16 ch;
 248         u32 tsf_low;
 249         u8 switch_count;
 250         u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 251         struct ieee80211_vif *vif = ctx->vif;
 252         struct iwl_host_cmd hcmd = {
 253                 .id = REPLY_CHANNEL_SWITCH,
 254                 .len = { sizeof(cmd), },
 255                 .flags = CMD_SYNC,
 256                 .data = { &cmd, },
 257         };
 258
 259         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 260         ch = ch_switch->channel->hw_value;
 261         IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
 262                       ctx->active.channel, ch);
 263         cmd.channel = cpu_to_le16(ch);
 264         cmd.rxon_flags = ctx->staging.flags;
 265         cmd.rxon_filter_flags = ctx->staging.filter_flags;
 266         switch_count = ch_switch->count;
 267         tsf_low = ch_switch->timestamp & 0x0ffffffff;
 268         /*
 269          * calculate the ucode channel switch time
 270          * adding TSF as one of the factor for when to switch
 271          */
 272         if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
 273                 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
 274                     beacon_interval)) {
 275                         switch_count -= (priv->ucode_beacon_time -
 276                                 tsf_low) / beacon_interval;
 277                 } else
 278                         switch_count = 0;
 279         }
 280         if (switch_count <= 1)
 281                 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
 282         else {
 283                 switch_time_in_usec =
 284                         vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
 285                 ucode_switch_time = iwl_usecs_to_beacons(priv,
 286                                                          switch_time_in_usec,
 287                                                          beacon_interval);
 288                 cmd.switch_time = iwl_add_beacon_time(priv,
 289                                                       priv->ucode_beacon_time,
 290                                                       ucode_switch_time,
 291                                                       beacon_interval);
 292         }
 293         IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
 294                       cmd.switch_time);
 295         ch_info = iwl_get_channel_info(priv, priv->band, ch);
 296         if (ch_info)
 297                 cmd.expect_beacon = is_channel_radar(ch_info);
 298         else {
 299                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
 300                         ctx->active.channel, ch);
 301                 return -EFAULT;
 302         }
 303
 304         return iwl_trans_send_cmd(trans(priv), &hcmd);
 305 }
 306
 307 static struct iwl_lib_ops iwl5000_lib = {
 308         .set_hw_params = iwl5000_hw_set_hw_params,
 309         .set_channel_switch = iwl5000_hw_channel_switch,
 310         .nic_config = iwl5000_nic_config,
 311         .eeprom_ops = {
 312                 .regulatory_bands = {
 313                         EEPROM_REG_BAND_1_CHANNELS,
 314                         EEPROM_REG_BAND_2_CHANNELS,
 315                         EEPROM_REG_BAND_3_CHANNELS,
 316                         EEPROM_REG_BAND_4_CHANNELS,
 317                         EEPROM_REG_BAND_5_CHANNELS,
 318                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 319                         EEPROM_REG_BAND_52_HT40_CHANNELS
 320                 },
 321         },
 322         .temperature = iwlagn_temperature,
 323 };
 324
 325 static struct iwl_lib_ops iwl5150_lib = {
 326         .set_hw_params = iwl5150_hw_set_hw_params,
 327         .set_channel_switch = iwl5000_hw_channel_switch,
 328         .nic_config = iwl5000_nic_config,
 329         .eeprom_ops = {
 330                 .regulatory_bands = {
 331                         EEPROM_REG_BAND_1_CHANNELS,
 332                         EEPROM_REG_BAND_2_CHANNELS,
 333                         EEPROM_REG_BAND_3_CHANNELS,
 334                         EEPROM_REG_BAND_4_CHANNELS,
 335                         EEPROM_REG_BAND_5_CHANNELS,
 336                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 337                         EEPROM_REG_BAND_52_HT40_CHANNELS
 338                 },
 339         },
 340         .temperature = iwl5150_temperature,
 341 };
 342
 343 static struct iwl_base_params iwl5000_base_params = {
 344         .eeprom_size = IWLAGN_EEPROM_IMG_SIZE,
 345         .num_of_queues = IWLAGN_NUM_QUEUES,
 346         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 347         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
 348         .led_compensation = 51,
 349         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
 350         .chain_noise_scale = 1000,
 351         .wd_timeout = IWL_LONG_WD_TIMEOUT,
 352         .max_event_log_size = 512,
 353         .no_idle_support = 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         .need_dc_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));