drivers/net/wireless/iwlwifi/iwl-2000.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2008 - 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/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <linux/delay.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/wireless.h>
  36 #include <net/mac80211.h>
  37 #include <linux/etherdevice.h>
  38 #include <asm/unaligned.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-agn.h"
  46 #include "iwl-helpers.h"
  47 #include "iwl-agn-hw.h"
  48 #include "iwl-6000-hw.h"
  49
  50 /* Highest firmware API version supported */
  51 #define IWL2030_UCODE_API_MAX 5
  52 #define IWL2000_UCODE_API_MAX 5
  53 #define IWL105_UCODE_API_MAX 5
  54
  55 /* Lowest firmware API version supported */
  56 #define IWL2030_UCODE_API_MIN 5
  57 #define IWL2000_UCODE_API_MIN 5
  58 #define IWL105_UCODE_API_MIN 5
  59
  60 #define IWL2030_FW_PRE "iwlwifi-2030-"
  61 #define IWL2030_MODULE_FIRMWARE(api) IWL2030_FW_PRE #api ".ucode"
  62
  63 #define IWL2000_FW_PRE "iwlwifi-2000-"
  64 #define IWL2000_MODULE_FIRMWARE(api) IWL2000_FW_PRE #api ".ucode"
  65
  66 #define IWL105_FW_PRE "iwlwifi-105-"
  67 #define IWL105_MODULE_FIRMWARE(api) IWL105_FW_PRE #api ".ucode"
  68
  69 static void iwl2000_set_ct_threshold(struct iwl_priv *priv)
  70 {
  71         /* want Celsius */
  72         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
  73         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
  74 }
  75
  76 /* NIC configuration for 2000 series */
  77 static void iwl2000_nic_config(struct iwl_priv *priv)
  78 {
  79         u16 radio_cfg;
  80
  81         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
  82
  83         /* write radio config values to register */
  84         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX)
  85         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  86                         EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
  87                         EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
  88                         EEPROM_RF_CFG_DASH_MSK(radio_cfg));
  89
  90         /* set CSR_HW_CONFIG_REG for uCode use */
  91         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  92                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  93                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
  94
  95         if (priv->cfg->iq_invert)
  96                 iwl_set_bit(priv, CSR_GP_DRIVER_REG,
  97                             CSR_GP_DRIVER_REG_BIT_RADIO_IQ_INVER);
  98
  99         if (priv->cfg->disable_otp_refresh)
 100                 iwl_write_prph(priv, APMG_ANALOG_SVR_REG, 0x80000010);
 101 }
 102
 103 static struct iwl_sensitivity_ranges iwl2000_sensitivity = {
 104         .min_nrg_cck = 97,
 105         .max_nrg_cck = 0, /* not used, set to 0 */
 106         .auto_corr_min_ofdm = 80,
 107         .auto_corr_min_ofdm_mrc = 128,
 108         .auto_corr_min_ofdm_x1 = 105,
 109         .auto_corr_min_ofdm_mrc_x1 = 192,
 110
 111         .auto_corr_max_ofdm = 145,
 112         .auto_corr_max_ofdm_mrc = 232,
 113         .auto_corr_max_ofdm_x1 = 110,
 114         .auto_corr_max_ofdm_mrc_x1 = 232,
 115
 116         .auto_corr_min_cck = 125,
 117         .auto_corr_max_cck = 175,
 118         .auto_corr_min_cck_mrc = 160,
 119         .auto_corr_max_cck_mrc = 310,
 120         .nrg_th_cck = 97,
 121         .nrg_th_ofdm = 100,
 122
 123         .barker_corr_th_min = 190,
 124         .barker_corr_th_min_mrc = 390,
 125         .nrg_th_cca = 62,
 126 };
 127
 128 static int iwl2000_hw_set_hw_params(struct iwl_priv *priv)
 129 {
 130         if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES &&
 131             iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES)
 132                 priv->cfg->base_params->num_of_queues =
 133                         iwlagn_mod_params.num_of_queues;
 134
 135         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
 136         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
 137         priv->hw_params.scd_bc_tbls_size =
 138                 priv->cfg->base_params->num_of_queues *
 139                 sizeof(struct iwlagn_scd_bc_tbl);
 140         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 141         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
 142         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 143
 144         priv->hw_params.max_data_size = IWL60_RTC_DATA_SIZE;
 145         priv->hw_params.max_inst_size = IWL60_RTC_INST_SIZE;
 146
 147         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 148                                         BIT(IEEE80211_BAND_5GHZ);
 149         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 150
 151         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 152         if (priv->cfg->rx_with_siso_diversity)
 153                 priv->hw_params.rx_chains_num = 1;
 154         else
 155                 priv->hw_params.rx_chains_num =
 156                         num_of_ant(priv->cfg->valid_rx_ant);
 157         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 158         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 159
 160         iwl2000_set_ct_threshold(priv);
 161
 162         /* Set initial sensitivity parameters */
 163         /* Set initial calibration set */
 164         priv->hw_params.sens = &iwl2000_sensitivity;
 165         priv->hw_params.calib_init_cfg =
 166                 BIT(IWL_CALIB_XTAL)             |
 167                 BIT(IWL_CALIB_LO)               |
 168                 BIT(IWL_CALIB_TX_IQ)            |
 169                 BIT(IWL_CALIB_BASE_BAND);
 170         if (priv->cfg->need_dc_calib)
 171                 priv->hw_params.calib_rt_cfg |= BIT(IWL_CALIB_CFG_DC_IDX);
 172         if (priv->cfg->need_temp_offset_calib)
 173                 priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_TEMP_OFFSET);
 174
 175         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
 176
 177         return 0;
 178 }
 179
 180 static int iwl2030_hw_channel_switch(struct iwl_priv *priv,
 181                                     struct ieee80211_channel_switch *ch_switch)
 182 {
 183         /*
 184          * MULTI-FIXME
 185          * See iwl_mac_channel_switch.
 186          */
 187         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 188         struct iwl6000_channel_switch_cmd cmd;
 189         const struct iwl_channel_info *ch_info;
 190         u32 switch_time_in_usec, ucode_switch_time;
 191         u16 ch;
 192         u32 tsf_low;
 193         u8 switch_count;
 194         u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
 195         struct ieee80211_vif *vif = ctx->vif;
 196         struct iwl_host_cmd hcmd = {
 197                 .id = REPLY_CHANNEL_SWITCH,
 198                 .len = sizeof(cmd),
 199                 .flags = CMD_SYNC,
 200                 .data = &cmd,
 201         };
 202
 203         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 204         ch = ch_switch->channel->hw_value;
 205         IWL_DEBUG_11H(priv, "channel switch from %u to %u\n",
 206                 ctx->active.channel, ch);
 207         cmd.channel = cpu_to_le16(ch);
 208         cmd.rxon_flags = ctx->staging.flags;
 209         cmd.rxon_filter_flags = ctx->staging.filter_flags;
 210         switch_count = ch_switch->count;
 211         tsf_low = ch_switch->timestamp & 0x0ffffffff;
 212         /*
 213          * calculate the ucode channel switch time
 214          * adding TSF as one of the factor for when to switch
 215          */
 216         if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
 217                 if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
 218                     beacon_interval)) {
 219                         switch_count -= (priv->ucode_beacon_time -
 220                                 tsf_low) / beacon_interval;
 221                 } else
 222                         switch_count = 0;
 223         }
 224         if (switch_count <= 1)
 225                 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
 226         else {
 227                 switch_time_in_usec =
 228                         vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
 229                 ucode_switch_time = iwl_usecs_to_beacons(priv,
 230                                                 switch_time_in_usec,
 231                                                 beacon_interval);
 232                 cmd.switch_time = iwl_add_beacon_time(priv,
 233                                                 priv->ucode_beacon_time,
 234                                                 ucode_switch_time,
 235                                                 beacon_interval);
 236         }
 237         IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
 238                       cmd.switch_time);
 239         ch_info = iwl_get_channel_info(priv, priv->band, ch);
 240         if (ch_info)
 241                 cmd.expect_beacon = is_channel_radar(ch_info);
 242         else {
 243                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
 244                         ctx->active.channel, ch);
 245                 return -EFAULT;
 246         }
 247         priv->switch_rxon.channel = cmd.channel;
 248         priv->switch_rxon.switch_in_progress = true;
 249
 250         return iwl_send_cmd_sync(priv, &hcmd);
 251 }
 252
 253 static struct iwl_lib_ops iwl2000_lib = {
 254         .set_hw_params = iwl2000_hw_set_hw_params,
 255         .txq_set_sched = iwlagn_txq_set_sched,
 256         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
 257         .txq_free_tfd = iwl_hw_txq_free_tfd,
 258         .txq_init = iwl_hw_tx_queue_init,
 259         .rx_handler_setup = iwlagn_rx_handler_setup,
 260         .setup_deferred_work = iwlagn_bt_setup_deferred_work,
 261         .cancel_deferred_work = iwlagn_bt_cancel_deferred_work,
 262         .is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
 263         .send_tx_power = iwlagn_send_tx_power,
 264         .update_chain_flags = iwl_update_chain_flags,
 265         .set_channel_switch = iwl2030_hw_channel_switch,
 266         .apm_ops = {
 267                 .init = iwl_apm_init,
 268                 .config = iwl2000_nic_config,
 269         },
 270         .eeprom_ops = {
 271                 .regulatory_bands = {
 272                         EEPROM_REG_BAND_1_CHANNELS,
 273                         EEPROM_REG_BAND_2_CHANNELS,
 274                         EEPROM_REG_BAND_3_CHANNELS,
 275                         EEPROM_REG_BAND_4_CHANNELS,
 276                         EEPROM_REG_BAND_5_CHANNELS,
 277                         EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
 278                         EEPROM_REGULATORY_BAND_NO_HT40,
 279                 },
 280                 .query_addr = iwlagn_eeprom_query_addr,
 281                 .update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
 282         },
 283         .temp_ops = {
 284                 .temperature = iwlagn_temperature,
 285         },
 286         .txfifo_flush = iwlagn_txfifo_flush,
 287         .dev_txfifo_flush = iwlagn_dev_txfifo_flush,
 288 };
 289
 290 static const struct iwl_ops iwl2000_ops = {
 291         .lib = &iwl2000_lib,
 292         .hcmd = &iwlagn_hcmd,
 293         .utils = &iwlagn_hcmd_utils,
 294 };
 295
 296 static const struct iwl_ops iwl2030_ops = {
 297         .lib = &iwl2000_lib,
 298         .hcmd = &iwlagn_bt_hcmd,
 299         .utils = &iwlagn_hcmd_utils,
 300 };
 301
 302 static const struct iwl_ops iwl105_ops = {
 303         .lib = &iwl2000_lib,
 304         .hcmd = &iwlagn_hcmd,
 305         .utils = &iwlagn_hcmd_utils,
 306 };
 307
 308 static const struct iwl_ops iwl135_ops = {
 309         .lib = &iwl2000_lib,
 310         .hcmd = &iwlagn_bt_hcmd,
 311         .utils = &iwlagn_hcmd_utils,
 312 };
 313
 314 static struct iwl_base_params iwl2000_base_params = {
 315         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 316         .num_of_queues = IWLAGN_NUM_QUEUES,
 317         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 318         .pll_cfg_val = 0,
 319         .max_ll_items = OTP_MAX_LL_ITEMS_2x00,
 320         .shadow_ram_support = true,
 321         .led_compensation = 51,
 322         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 323         .adv_thermal_throttle = true,
 324         .support_ct_kill_exit = true,
 325         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
 326         .chain_noise_scale = 1000,
 327         .wd_timeout = IWL_DEF_WD_TIMEOUT,
 328         .max_event_log_size = 512,
 329         .shadow_reg_enable = true,
 330 };
 331
 332
 333 static struct iwl_base_params iwl2030_base_params = {
 334         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 335         .num_of_queues = IWLAGN_NUM_QUEUES,
 336         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 337         .pll_cfg_val = 0,
 338         .max_ll_items = OTP_MAX_LL_ITEMS_2x00,
 339         .shadow_ram_support = true,
 340         .led_compensation = 57,
 341         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 342         .adv_thermal_throttle = true,
 343         .support_ct_kill_exit = true,
 344         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
 345         .chain_noise_scale = 1000,
 346         .wd_timeout = IWL_LONG_WD_TIMEOUT,
 347         .max_event_log_size = 512,
 348         .shadow_reg_enable = true,
 349 };
 350
 351 static struct iwl_ht_params iwl2000_ht_params = {
 352         .ht_greenfield_support = true,
 353         .use_rts_for_aggregation = true, /* use rts/cts protection */
 354 };
 355
 356 static struct iwl_bt_params iwl2030_bt_params = {
 357         /* Due to bluetooth, we transmit 2.4 GHz probes only on antenna A */
 358         .advanced_bt_coexist = true,
 359         .agg_time_limit = BT_AGG_THRESHOLD_DEF,
 360         .bt_init_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_NONE,
 361         .bt_prio_boost = IWLAGN_BT_PRIO_BOOST_DEFAULT,
 362         .bt_sco_disable = true,
 363         .bt_session_2 = true,
 364 };
 365
 366 #define IWL_DEVICE_2000                                         \
 367         .fw_name_pre = IWL2000_FW_PRE,                          \
 368         .ucode_api_max = IWL2000_UCODE_API_MAX,                 \
 369         .ucode_api_min = IWL2000_UCODE_API_MIN,                 \
 370         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
 371         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
 372         .ops = &iwl2000_ops,                                    \
 373         .base_params = &iwl2000_base_params,                    \
 374         .need_dc_calib = true,                                  \
 375         .need_temp_offset_calib = true,                         \
 376         .led_mode = IWL_LED_RF_STATE,                           \
 377         .iq_invert = true,                                      \
 378         .disable_otp_refresh = true                             \
 379
 380 struct iwl_cfg iwl2000_2bgn_cfg = {
 381         .name = "2000 Series 2x2 BGN",
 382         IWL_DEVICE_2000,
 383         .ht_params = &iwl2000_ht_params,
 384 };
 385
 386 struct iwl_cfg iwl2000_2bg_cfg = {
 387         .name = "2000 Series 2x2 BG",
 388         IWL_DEVICE_2000,
 389 };
 390
 391 #define IWL_DEVICE_2030                                         \
 392         .fw_name_pre = IWL2030_FW_PRE,                          \
 393         .ucode_api_max = IWL2030_UCODE_API_MAX,                 \
 394         .ucode_api_min = IWL2030_UCODE_API_MIN,                 \
 395         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
 396         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
 397         .ops = &iwl2030_ops,                                    \
 398         .base_params = &iwl2030_base_params,                    \
 399         .bt_params = &iwl2030_bt_params,                        \
 400         .need_dc_calib = true,                                  \
 401         .need_temp_offset_calib = true,                         \
 402         .led_mode = IWL_LED_RF_STATE,                           \
 403         .adv_pm = true,                                         \
 404         .iq_invert = true                                       \
 405
 406 struct iwl_cfg iwl2030_2bgn_cfg = {
 407         .name = "2000 Series 2x2 BGN/BT",
 408         IWL_DEVICE_2030,
 409         .ht_params = &iwl2000_ht_params,
 410 };
 411
 412 struct iwl_cfg iwl2030_2bg_cfg = {
 413         .name = "2000 Series 2x2 BG/BT",
 414         IWL_DEVICE_2030,
 415 };
 416
 417 #define IWL_DEVICE_105                                          \
 418         .fw_name_pre = IWL105_FW_PRE,                           \
 419         .ucode_api_max = IWL105_UCODE_API_MAX,                  \
 420         .ucode_api_min = IWL105_UCODE_API_MIN,                  \
 421         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
 422         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
 423         .ops = &iwl105_ops,                                     \
 424         .base_params = &iwl2000_base_params,                    \
 425         .need_dc_calib = true,                                  \
 426         .need_temp_offset_calib = true,                         \
 427         .led_mode = IWL_LED_RF_STATE,                           \
 428         .adv_pm = true,                                         \
 429         .rx_with_siso_diversity = true                          \
 430
 431 struct iwl_cfg iwl105_bg_cfg = {
 432         .name = "105 Series 1x1 BG",
 433         IWL_DEVICE_105,
 434 };
 435
 436 struct iwl_cfg iwl105_bgn_cfg = {
 437         .name = "105 Series 1x1 BGN",
 438         IWL_DEVICE_105,
 439         .ht_params = &iwl2000_ht_params,
 440 };
 441
 442 #define IWL_DEVICE_135                                          \
 443         .fw_name_pre = IWL105_FW_PRE,                           \
 444         .ucode_api_max = IWL105_UCODE_API_MAX,                  \
 445         .ucode_api_min = IWL105_UCODE_API_MIN,                  \
 446         .eeprom_ver = EEPROM_2000_EEPROM_VERSION,               \
 447         .eeprom_calib_ver = EEPROM_2000_TX_POWER_VERSION,       \
 448         .ops = &iwl135_ops,                                     \
 449         .base_params = &iwl2030_base_params,                    \
 450         .bt_params = &iwl2030_bt_params,                        \
 451         .need_dc_calib = true,                                  \
 452         .need_temp_offset_calib = true,                         \
 453         .led_mode = IWL_LED_RF_STATE,                           \
 454         .adv_pm = true,                                         \
 455         .rx_with_siso_diversity = true                          \
 456
 457 struct iwl_cfg iwl135_bg_cfg = {
 458         .name = "105 Series 1x1 BG/BT",
 459         IWL_DEVICE_135,
 460 };
 461
 462 struct iwl_cfg iwl135_bgn_cfg = {
 463         .name = "105 Series 1x1 BGN/BT",
 464         IWL_DEVICE_135,
 465         .ht_params = &iwl2000_ht_params,
 466 };
 467
 468 MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_MAX));
 469 MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_MAX));
 470 MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_MAX));