drivers/net/wireless/iwlwifi/iwl-1000.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2008 - 2010 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-agn-led.h"
  49 #include "iwl-agn-debugfs.h"
  50
  51 /* Highest firmware API version supported */
  52 #define IWL1000_UCODE_API_MAX 3
  53 #define IWL100_UCODE_API_MAX 5
  54
  55 /* Lowest firmware API version supported */
  56 #define IWL1000_UCODE_API_MIN 1
  57 #define IWL100_UCODE_API_MIN 5
  58
  59 #define IWL1000_FW_PRE "iwlwifi-1000-"
  60 #define _IWL1000_MODULE_FIRMWARE(api) IWL1000_FW_PRE #api ".ucode"
  61 #define IWL1000_MODULE_FIRMWARE(api) _IWL1000_MODULE_FIRMWARE(api)
  62
  63 #define IWL100_FW_PRE "iwlwifi-100-"
  64 #define _IWL100_MODULE_FIRMWARE(api) IWL100_FW_PRE #api ".ucode"
  65 #define IWL100_MODULE_FIRMWARE(api) _IWL100_MODULE_FIRMWARE(api)
  66
  67
  68 /*
  69  * For 1000, use advance thermal throttling critical temperature threshold,
  70  * but legacy thermal management implementation for now.
  71  * This is for the reason of 1000 uCode using advance thermal throttling API
  72  * but not implement ct_kill_exit based on ct_kill exit temperature
  73  * so the thermal throttling will still based on legacy thermal throttling
  74  * management.
  75  * The code here need to be modified once 1000 uCode has the advanced thermal
  76  * throttling algorithm in place
  77  */
  78 static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
  79 {
  80         /* want Celsius */
  81         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
  82         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
  83 }
  84
  85 /* NIC configuration for 1000 series */
  86 static void iwl1000_nic_config(struct iwl_priv *priv)
  87 {
  88         /* set CSR_HW_CONFIG_REG for uCode use */
  89         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  90                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  91                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
  92
  93         /* Setting digital SVR for 1000 card to 1.32V */
  94         /* locking is acquired in iwl_set_bits_mask_prph() function */
  95         iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
  96                                 APMG_SVR_DIGITAL_VOLTAGE_1_32,
  97                                 ~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
  98 }
  99
 100 static struct iwl_sensitivity_ranges iwl1000_sensitivity = {
 101         .min_nrg_cck = 95,
 102         .max_nrg_cck = 0, /* not used, set to 0 */
 103         .auto_corr_min_ofdm = 90,
 104         .auto_corr_min_ofdm_mrc = 170,
 105         .auto_corr_min_ofdm_x1 = 120,
 106         .auto_corr_min_ofdm_mrc_x1 = 240,
 107
 108         .auto_corr_max_ofdm = 120,
 109         .auto_corr_max_ofdm_mrc = 210,
 110         .auto_corr_max_ofdm_x1 = 155,
 111         .auto_corr_max_ofdm_mrc_x1 = 290,
 112
 113         .auto_corr_min_cck = 125,
 114         .auto_corr_max_cck = 200,
 115         .auto_corr_min_cck_mrc = 170,
 116         .auto_corr_max_cck_mrc = 400,
 117         .nrg_th_cck = 95,
 118         .nrg_th_ofdm = 95,
 119
 120         .barker_corr_th_min = 190,
 121         .barker_corr_th_min_mrc = 390,
 122         .nrg_th_cca = 62,
 123 };
 124
 125 static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
 126 {
 127         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
 128             priv->cfg->mod_params->num_of_queues <= IWLAGN_NUM_QUEUES)
 129                 priv->cfg->base_params->num_of_queues =
 130                         priv->cfg->mod_params->num_of_queues;
 131
 132         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
 133         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
 134         priv->hw_params.scd_bc_tbls_size =
 135                         priv->cfg->base_params->num_of_queues *
 136                         sizeof(struct iwlagn_scd_bc_tbl);
 137         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 138         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
 139         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 140
 141         priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
 142         priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
 143
 144         priv->hw_params.max_bsm_size = 0;
 145         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 146                                         BIT(IEEE80211_BAND_5GHZ);
 147         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 148
 149         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 150         if (priv->cfg->rx_with_siso_diversity)
 151                 priv->hw_params.rx_chains_num = 1;
 152         else
 153                 priv->hw_params.rx_chains_num =
 154                         num_of_ant(priv->cfg->valid_rx_ant);
 155         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 156         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 157
 158         iwl1000_set_ct_threshold(priv);
 159
 160         /* Set initial sensitivity parameters */
 161         /* Set initial calibration set */
 162         priv->hw_params.sens = &iwl1000_sensitivity;
 163         priv->hw_params.calib_init_cfg =
 164                         BIT(IWL_CALIB_XTAL)             |
 165                         BIT(IWL_CALIB_LO)               |
 166                         BIT(IWL_CALIB_TX_IQ)            |
 167                         BIT(IWL_CALIB_TX_IQ_PERD)       |
 168                         BIT(IWL_CALIB_BASE_BAND);
 169         if (priv->cfg->need_dc_calib)
 170                 priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
 171
 172         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
 173
 174         return 0;
 175 }
 176
 177 static struct iwl_lib_ops iwl1000_lib = {
 178         .set_hw_params = iwl1000_hw_set_hw_params,
 179         .txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
 180         .txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
 181         .txq_set_sched = iwlagn_txq_set_sched,
 182         .txq_agg_enable = iwlagn_txq_agg_enable,
 183         .txq_agg_disable = iwlagn_txq_agg_disable,
 184         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
 185         .txq_free_tfd = iwl_hw_txq_free_tfd,
 186         .txq_init = iwl_hw_tx_queue_init,
 187         .rx_handler_setup = iwlagn_rx_handler_setup,
 188         .setup_deferred_work = iwlagn_setup_deferred_work,
 189         .is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
 190         .load_ucode = iwlagn_load_ucode,
 191         .dump_nic_event_log = iwl_dump_nic_event_log,
 192         .dump_nic_error_log = iwl_dump_nic_error_log,
 193         .dump_csr = iwl_dump_csr,
 194         .dump_fh = iwl_dump_fh,
 195         .init_alive_start = iwlagn_init_alive_start,
 196         .alive_notify = iwlagn_alive_notify,
 197         .send_tx_power = iwlagn_send_tx_power,
 198         .update_chain_flags = iwl_update_chain_flags,
 199         .apm_ops = {
 200                 .init = iwl_apm_init,
 201                 .config = iwl1000_nic_config,
 202         },
 203         .eeprom_ops = {
 204                 .regulatory_bands = {
 205                         EEPROM_REG_BAND_1_CHANNELS,
 206                         EEPROM_REG_BAND_2_CHANNELS,
 207                         EEPROM_REG_BAND_3_CHANNELS,
 208                         EEPROM_REG_BAND_4_CHANNELS,
 209                         EEPROM_REG_BAND_5_CHANNELS,
 210                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 211                         EEPROM_REG_BAND_52_HT40_CHANNELS
 212                 },
 213                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
 214                 .release_semaphore = iwlcore_eeprom_release_semaphore,
 215                 .calib_version  = iwlagn_eeprom_calib_version,
 216                 .query_addr = iwlagn_eeprom_query_addr,
 217         },
 218         .isr_ops = {
 219                 .isr = iwl_isr_ict,
 220                 .free = iwl_free_isr_ict,
 221                 .alloc = iwl_alloc_isr_ict,
 222                 .reset = iwl_reset_ict,
 223                 .disable = iwl_disable_ict,
 224         },
 225         .temp_ops = {
 226                 .temperature = iwlagn_temperature,
 227          },
 228         .debugfs_ops = {
 229                 .rx_stats_read = iwl_ucode_rx_stats_read,
 230                 .tx_stats_read = iwl_ucode_tx_stats_read,
 231                 .general_stats_read = iwl_ucode_general_stats_read,
 232                 .bt_stats_read = iwl_ucode_bt_stats_read,
 233                 .reply_tx_error = iwl_reply_tx_error_read,
 234         },
 235         .check_plcp_health = iwl_good_plcp_health,
 236         .check_ack_health = iwl_good_ack_health,
 237         .txfifo_flush = iwlagn_txfifo_flush,
 238         .dev_txfifo_flush = iwlagn_dev_txfifo_flush,
 239         .tt_ops = {
 240                 .lower_power_detection = iwl_tt_is_low_power_state,
 241                 .tt_power_mode = iwl_tt_current_power_mode,
 242                 .ct_kill_check = iwl_check_for_ct_kill,
 243         }
 244 };
 245
 246 static const struct iwl_ops iwl1000_ops = {
 247         .lib = &iwl1000_lib,
 248         .hcmd = &iwlagn_hcmd,
 249         .utils = &iwlagn_hcmd_utils,
 250         .led = &iwlagn_led_ops,
 251         .ieee80211_ops = &iwlagn_hw_ops,
 252 };
 253
 254 static struct iwl_base_params iwl1000_base_params = {
 255         .num_of_queues = IWLAGN_NUM_QUEUES,
 256         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 257         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 258         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
 259         .set_l0s = true,
 260         .use_bsm = false,
 261         .max_ll_items = OTP_MAX_LL_ITEMS_1000,
 262         .shadow_ram_support = false,
 263         .led_compensation = 51,
 264         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 265         .support_ct_kill_exit = true,
 266         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
 267         .chain_noise_scale = 1000,
 268         .wd_timeout = IWL_DEF_WD_TIMEOUT,
 269         .max_event_log_size = 128,
 270         .ucode_tracing = true,
 271         .sensitivity_calib_by_driver = true,
 272         .chain_noise_calib_by_driver = true,
 273 };
 274 static struct iwl_ht_params iwl1000_ht_params = {
 275         .ht_greenfield_support = true,
 276         .use_rts_for_aggregation = true, /* use rts/cts protection */
 277 };
 278
 279 #define IWL_DEVICE_1000                                         \
 280         .fw_name_pre = IWL1000_FW_PRE,                          \
 281         .ucode_api_max = IWL1000_UCODE_API_MAX,                 \
 282         .ucode_api_min = IWL1000_UCODE_API_MIN,                 \
 283         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
 284         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
 285         .ops = &iwl1000_ops,                                    \
 286         .mod_params = &iwlagn_mod_params,                       \
 287         .base_params = &iwl1000_base_params,                    \
 288         .led_mode = IWL_LED_BLINK
 289
 290 struct iwl_cfg iwl1000_bgn_cfg = {
 291         .name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
 292         IWL_DEVICE_1000,
 293         .ht_params = &iwl1000_ht_params,
 294 };
 295
 296 struct iwl_cfg iwl1000_bg_cfg = {
 297         .name = "Intel(R) Centrino(R) Wireless-N 1000 BG",
 298         IWL_DEVICE_1000,
 299 };
 300
 301 #define IWL_DEVICE_100                                          \
 302         .fw_name_pre = IWL100_FW_PRE,                           \
 303         .ucode_api_max = IWL100_UCODE_API_MAX,                  \
 304         .ucode_api_min = IWL100_UCODE_API_MIN,                  \
 305         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
 306         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
 307         .ops = &iwl1000_ops,                                    \
 308         .mod_params = &iwlagn_mod_params,                       \
 309         .base_params = &iwl1000_base_params,                    \
 310         .led_mode = IWL_LED_RF_STATE,                           \
 311         .rx_with_siso_diversity = true
 312
 313 struct iwl_cfg iwl100_bgn_cfg = {
 314         .name = "Intel(R) Centrino(R) Wireless-N 100 BGN",
 315         IWL_DEVICE_100,
 316         .ht_params = &iwl1000_ht_params,
 317 };
 318
 319 struct iwl_cfg iwl100_bg_cfg = {
 320         .name = "Intel(R) Centrino(R) Wireless-N 100 BG",
 321         IWL_DEVICE_100,
 322 };
 323
 324 MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX));
 325 MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_MAX));