drivers/net/wireless/iwlwifi/iwl-6000.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2008-2009 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-helpers.h"
  46 #include "iwl-5000-hw.h"
  47 #include "iwl-6000-hw.h"
  48 #include "iwl-agn-led.h"
  49
  50 /* Highest firmware API version supported */
  51 #define IWL6000_UCODE_API_MAX 4
  52 #define IWL6050_UCODE_API_MAX 4
  53
  54 /* Lowest firmware API version supported */
  55 #define IWL6000_UCODE_API_MIN 4
  56 #define IWL6050_UCODE_API_MIN 4
  57
  58 #define IWL6000_FW_PRE "iwlwifi-6000-"
  59 #define _IWL6000_MODULE_FIRMWARE(api) IWL6000_FW_PRE #api ".ucode"
  60 #define IWL6000_MODULE_FIRMWARE(api) _IWL6000_MODULE_FIRMWARE(api)
  61
  62 #define IWL6050_FW_PRE "iwlwifi-6050-"
  63 #define _IWL6050_MODULE_FIRMWARE(api) IWL6050_FW_PRE #api ".ucode"
  64 #define IWL6050_MODULE_FIRMWARE(api) _IWL6050_MODULE_FIRMWARE(api)
  65
  66 static void iwl6000_set_ct_threshold(struct iwl_priv *priv)
  67 {
  68         /* want Celsius */
  69         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
  70         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
  71 }
  72
  73 /* NIC configuration for 6000 series */
  74 static void iwl6000_nic_config(struct iwl_priv *priv)
  75 {
  76         u16 radio_cfg;
  77
  78         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
  79
  80         /* write radio config values to register */
  81         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX)
  82                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  83                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
  84                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
  85                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
  86
  87         /* set CSR_HW_CONFIG_REG for uCode use */
  88         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  89                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  90                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
  91
  92         /* no locking required for register write */
  93         if (priv->cfg->pa_type == IWL_PA_INTERNAL) {
  94                 /* 2x2 IPA phy type */
  95                 iwl_write32(priv, CSR_GP_DRIVER_REG,
  96                              CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA);
  97         }
  98         /* else do nothing, uCode configured */
  99 }
 100
 101 static struct iwl_sensitivity_ranges iwl6000_sensitivity = {
 102         .min_nrg_cck = 97,
 103         .max_nrg_cck = 0, /* not used, set to 0 */
 104         .auto_corr_min_ofdm = 80,
 105         .auto_corr_min_ofdm_mrc = 128,
 106         .auto_corr_min_ofdm_x1 = 105,
 107         .auto_corr_min_ofdm_mrc_x1 = 192,
 108
 109         .auto_corr_max_ofdm = 145,
 110         .auto_corr_max_ofdm_mrc = 232,
 111         .auto_corr_max_ofdm_x1 = 145,
 112         .auto_corr_max_ofdm_mrc_x1 = 232,
 113
 114         .auto_corr_min_cck = 125,
 115         .auto_corr_max_cck = 175,
 116         .auto_corr_min_cck_mrc = 160,
 117         .auto_corr_max_cck_mrc = 310,
 118         .nrg_th_cck = 97,
 119         .nrg_th_ofdm = 100,
 120
 121         .barker_corr_th_min = 190,
 122         .barker_corr_th_min_mrc = 390,
 123         .nrg_th_cca = 62,
 124 };
 125
 126 static int iwl6000_hw_set_hw_params(struct iwl_priv *priv)
 127 {
 128         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
 129             priv->cfg->mod_params->num_of_queues <= IWL50_NUM_QUEUES)
 130                 priv->cfg->num_of_queues =
 131                         priv->cfg->mod_params->num_of_queues;
 132
 133         priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
 134         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
 135         priv->hw_params.scd_bc_tbls_size =
 136                         priv->cfg->num_of_queues *
 137                         sizeof(struct iwl5000_scd_bc_tbl);
 138         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 139         priv->hw_params.max_stations = IWL5000_STATION_COUNT;
 140         priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
 141
 142         priv->hw_params.max_data_size = IWL60_RTC_DATA_SIZE;
 143         priv->hw_params.max_inst_size = IWL60_RTC_INST_SIZE;
 144
 145         priv->hw_params.max_bsm_size = 0;
 146         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 147                                         BIT(IEEE80211_BAND_5GHZ);
 148         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 149
 150         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 151         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 152         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 153         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 154
 155         if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
 156                 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
 157
 158         /* Set initial sensitivity parameters */
 159         /* Set initial calibration set */
 160         priv->hw_params.sens = &iwl6000_sensitivity;
 161         priv->hw_params.calib_init_cfg =
 162                         BIT(IWL_CALIB_XTAL)             |
 163                         BIT(IWL_CALIB_LO)               |
 164                         BIT(IWL_CALIB_TX_IQ)            |
 165                         BIT(IWL_CALIB_BASE_BAND);
 166         return 0;
 167 }
 168
 169 static int iwl6000_hw_channel_switch(struct iwl_priv *priv, u16 channel)
 170 {
 171         struct iwl6000_channel_switch_cmd cmd;
 172         const struct iwl_channel_info *ch_info;
 173         struct iwl_host_cmd hcmd = {
 174                 .id = REPLY_CHANNEL_SWITCH,
 175                 .len = sizeof(cmd),
 176                 .flags = CMD_SIZE_HUGE,
 177                 .data = &cmd,
 178         };
 179
 180         IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
 181                 priv->active_rxon.channel, channel);
 182
 183         cmd.band = priv->band == IEEE80211_BAND_2GHZ;
 184         cmd.channel = cpu_to_le16(channel);
 185         cmd.rxon_flags = priv->staging_rxon.flags;
 186         cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
 187         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
 188         ch_info = iwl_get_channel_info(priv, priv->band, channel);
 189         if (ch_info)
 190                 cmd.expect_beacon = is_channel_radar(ch_info);
 191         else {
 192                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
 193                         priv->active_rxon.channel, channel);
 194                 return -EFAULT;
 195         }
 196         priv->switch_rxon.channel = cpu_to_le16(channel);
 197         priv->switch_rxon.switch_in_progress = true;
 198
 199         return iwl_send_cmd_sync(priv, &hcmd);
 200 }
 201
 202 static struct iwl_lib_ops iwl6000_lib = {
 203         .set_hw_params = iwl6000_hw_set_hw_params,
 204         .txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
 205         .txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
 206         .txq_set_sched = iwl5000_txq_set_sched,
 207         .txq_agg_enable = iwl5000_txq_agg_enable,
 208         .txq_agg_disable = iwl5000_txq_agg_disable,
 209         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
 210         .txq_free_tfd = iwl_hw_txq_free_tfd,
 211         .txq_init = iwl_hw_tx_queue_init,
 212         .rx_handler_setup = iwl5000_rx_handler_setup,
 213         .setup_deferred_work = iwl5000_setup_deferred_work,
 214         .is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
 215         .load_ucode = iwl5000_load_ucode,
 216         .dump_nic_event_log = iwl_dump_nic_event_log,
 217         .dump_nic_error_log = iwl_dump_nic_error_log,
 218         .dump_csr = iwl_dump_csr,
 219         .init_alive_start = iwl5000_init_alive_start,
 220         .alive_notify = iwl5000_alive_notify,
 221         .send_tx_power = iwl5000_send_tx_power,
 222         .update_chain_flags = iwl_update_chain_flags,
 223         .set_channel_switch = iwl6000_hw_channel_switch,
 224         .apm_ops = {
 225                 .init = iwl_apm_init,
 226                 .stop = iwl_apm_stop,
 227                 .config = iwl6000_nic_config,
 228                 .set_pwr_src = iwl_set_pwr_src,
 229         },
 230         .eeprom_ops = {
 231                 .regulatory_bands = {
 232                         EEPROM_5000_REG_BAND_1_CHANNELS,
 233                         EEPROM_5000_REG_BAND_2_CHANNELS,
 234                         EEPROM_5000_REG_BAND_3_CHANNELS,
 235                         EEPROM_5000_REG_BAND_4_CHANNELS,
 236                         EEPROM_5000_REG_BAND_5_CHANNELS,
 237                         EEPROM_5000_REG_BAND_24_HT40_CHANNELS,
 238                         EEPROM_5000_REG_BAND_52_HT40_CHANNELS
 239                 },
 240                 .verify_signature  = iwlcore_eeprom_verify_signature,
 241                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
 242                 .release_semaphore = iwlcore_eeprom_release_semaphore,
 243                 .calib_version  = iwl5000_eeprom_calib_version,
 244                 .query_addr = iwl5000_eeprom_query_addr,
 245                 .update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
 246         },
 247         .post_associate = iwl_post_associate,
 248         .isr = iwl_isr_ict,
 249         .config_ap = iwl_config_ap,
 250         .temp_ops = {
 251                 .temperature = iwl5000_temperature,
 252                 .set_ct_kill = iwl6000_set_ct_threshold,
 253          },
 254 };
 255
 256 static const struct iwl_ops iwl6000_ops = {
 257         .ucode = &iwl5000_ucode,
 258         .lib = &iwl6000_lib,
 259         .hcmd = &iwl5000_hcmd,
 260         .utils = &iwl5000_hcmd_utils,
 261         .led = &iwlagn_led_ops,
 262 };
 263
 264 static struct iwl_hcmd_utils_ops iwl6050_hcmd_utils = {
 265         .get_hcmd_size = iwl5000_get_hcmd_size,
 266         .build_addsta_hcmd = iwl5000_build_addsta_hcmd,
 267         .rts_tx_cmd_flag = iwl5000_rts_tx_cmd_flag,
 268         .calc_rssi = iwl5000_calc_rssi,
 269 };
 270
 271 static const struct iwl_ops iwl6050_ops = {
 272         .ucode = &iwl5000_ucode,
 273         .lib = &iwl6000_lib,
 274         .hcmd = &iwl5000_hcmd,
 275         .utils = &iwl6050_hcmd_utils,
 276         .led = &iwlagn_led_ops,
 277 };
 278
 279 /*
 280  * "i": Internal configuration, use internal Power Amplifier
 281  */
 282 struct iwl_cfg iwl6000i_2agn_cfg = {
 283         .name = "6000 Series 2x2 AGN",
 284         .fw_name_pre = IWL6000_FW_PRE,
 285         .ucode_api_max = IWL6000_UCODE_API_MAX,
 286         .ucode_api_min = IWL6000_UCODE_API_MIN,
 287         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 288         .ops = &iwl6000_ops,
 289         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 290         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
 291         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 292         .num_of_queues = IWL50_NUM_QUEUES,
 293         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 294         .mod_params = &iwl50_mod_params,
 295         .valid_tx_ant = ANT_BC,
 296         .valid_rx_ant = ANT_BC,
 297         .pll_cfg_val = 0,
 298         .set_l0s = true,
 299         .use_bsm = false,
 300         .pa_type = IWL_PA_INTERNAL,
 301         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
 302         .shadow_ram_support = true,
 303         .ht_greenfield_support = true,
 304         .led_compensation = 51,
 305         .use_rts_for_ht = true, /* use rts/cts protection */
 306         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 307         .supports_idle = true,
 308         .adv_thermal_throttle = true,
 309         .support_ct_kill_exit = true,
 310 };
 311
 312 struct iwl_cfg iwl6000i_2abg_cfg = {
 313         .name = "6000 Series 2x2 ABG",
 314         .fw_name_pre = IWL6000_FW_PRE,
 315         .ucode_api_max = IWL6000_UCODE_API_MAX,
 316         .ucode_api_min = IWL6000_UCODE_API_MIN,
 317         .sku = IWL_SKU_A|IWL_SKU_G,
 318         .ops = &iwl6000_ops,
 319         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 320         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
 321         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 322         .num_of_queues = IWL50_NUM_QUEUES,
 323         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 324         .mod_params = &iwl50_mod_params,
 325         .valid_tx_ant = ANT_BC,
 326         .valid_rx_ant = ANT_BC,
 327         .pll_cfg_val = 0,
 328         .set_l0s = true,
 329         .use_bsm = false,
 330         .pa_type = IWL_PA_INTERNAL,
 331         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
 332         .shadow_ram_support = true,
 333         .ht_greenfield_support = true,
 334         .led_compensation = 51,
 335         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 336         .supports_idle = true,
 337         .adv_thermal_throttle = true,
 338         .support_ct_kill_exit = true,
 339 };
 340
 341 struct iwl_cfg iwl6000i_2bg_cfg = {
 342         .name = "6000 Series 2x2 BG",
 343         .fw_name_pre = IWL6000_FW_PRE,
 344         .ucode_api_max = IWL6000_UCODE_API_MAX,
 345         .ucode_api_min = IWL6000_UCODE_API_MIN,
 346         .sku = IWL_SKU_G,
 347         .ops = &iwl6000_ops,
 348         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 349         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
 350         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 351         .num_of_queues = IWL50_NUM_QUEUES,
 352         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 353         .mod_params = &iwl50_mod_params,
 354         .valid_tx_ant = ANT_BC,
 355         .valid_rx_ant = ANT_BC,
 356         .pll_cfg_val = 0,
 357         .set_l0s = true,
 358         .use_bsm = false,
 359         .pa_type = IWL_PA_INTERNAL,
 360         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
 361         .shadow_ram_support = true,
 362         .ht_greenfield_support = true,
 363         .led_compensation = 51,
 364         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 365         .supports_idle = true,
 366         .adv_thermal_throttle = true,
 367         .support_ct_kill_exit = true,
 368 };
 369
 370 struct iwl_cfg iwl6050_2agn_cfg = {
 371         .name = "6050 Series 2x2 AGN",
 372         .fw_name_pre = IWL6050_FW_PRE,
 373         .ucode_api_max = IWL6050_UCODE_API_MAX,
 374         .ucode_api_min = IWL6050_UCODE_API_MIN,
 375         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 376         .ops = &iwl6050_ops,
 377         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 378         .eeprom_ver = EEPROM_6050_EEPROM_VERSION,
 379         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 380         .num_of_queues = IWL50_NUM_QUEUES,
 381         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 382         .mod_params = &iwl50_mod_params,
 383         .valid_tx_ant = ANT_AB,
 384         .valid_rx_ant = ANT_AB,
 385         .pll_cfg_val = 0,
 386         .set_l0s = true,
 387         .use_bsm = false,
 388         .pa_type = IWL_PA_SYSTEM,
 389         .max_ll_items = OTP_MAX_LL_ITEMS_6x50,
 390         .shadow_ram_support = true,
 391         .ht_greenfield_support = true,
 392         .led_compensation = 51,
 393         .use_rts_for_ht = true, /* use rts/cts protection */
 394         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 395         .supports_idle = true,
 396         .adv_thermal_throttle = true,
 397         .support_ct_kill_exit = true,
 398 };
 399
 400 struct iwl_cfg iwl6050_2abg_cfg = {
 401         .name = "6050 Series 2x2 ABG",
 402         .fw_name_pre = IWL6050_FW_PRE,
 403         .ucode_api_max = IWL6050_UCODE_API_MAX,
 404         .ucode_api_min = IWL6050_UCODE_API_MIN,
 405         .sku = IWL_SKU_A|IWL_SKU_G,
 406         .ops = &iwl6050_ops,
 407         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 408         .eeprom_ver = EEPROM_6050_EEPROM_VERSION,
 409         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 410         .num_of_queues = IWL50_NUM_QUEUES,
 411         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 412         .mod_params = &iwl50_mod_params,
 413         .valid_tx_ant = ANT_AB,
 414         .valid_rx_ant = ANT_AB,
 415         .pll_cfg_val = 0,
 416         .set_l0s = true,
 417         .use_bsm = false,
 418         .pa_type = IWL_PA_SYSTEM,
 419         .max_ll_items = OTP_MAX_LL_ITEMS_6x50,
 420         .shadow_ram_support = true,
 421         .ht_greenfield_support = true,
 422         .led_compensation = 51,
 423         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 424         .supports_idle = true,
 425         .adv_thermal_throttle = true,
 426         .support_ct_kill_exit = true,
 427 };
 428
 429 struct iwl_cfg iwl6000_3agn_cfg = {
 430         .name = "6000 Series 3x3 AGN",
 431         .fw_name_pre = IWL6000_FW_PRE,
 432         .ucode_api_max = IWL6000_UCODE_API_MAX,
 433         .ucode_api_min = IWL6000_UCODE_API_MIN,
 434         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 435         .ops = &iwl6000_ops,
 436         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 437         .eeprom_ver = EEPROM_6000_EEPROM_VERSION,
 438         .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION,
 439         .num_of_queues = IWL50_NUM_QUEUES,
 440         .num_of_ampdu_queues = IWL50_NUM_AMPDU_QUEUES,
 441         .mod_params = &iwl50_mod_params,
 442         .valid_tx_ant = ANT_ABC,
 443         .valid_rx_ant = ANT_ABC,
 444         .pll_cfg_val = 0,
 445         .set_l0s = true,
 446         .use_bsm = false,
 447         .pa_type = IWL_PA_SYSTEM,
 448         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
 449         .shadow_ram_support = true,
 450         .ht_greenfield_support = true,
 451         .led_compensation = 51,
 452         .use_rts_for_ht = true, /* use rts/cts protection */
 453         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 454         .supports_idle = true,
 455         .adv_thermal_throttle = true,
 456         .support_ct_kill_exit = true,
 457 };
 458
 459 MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_MAX));
 460 MODULE_FIRMWARE(IWL6050_MODULE_FIRMWARE(IWL6050_UCODE_API_MAX));