drivers/net/wireless/iwlwifi/iwl-1000.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-agn-debugfs.h"
  49
  50 /* Highest firmware API version supported */
  51 #define IWL1000_UCODE_API_MAX 5
  52 #define IWL100_UCODE_API_MAX 5
  53
  54 /* Lowest firmware API version supported */
  55 #define IWL1000_UCODE_API_MIN 1
  56 #define IWL100_UCODE_API_MIN 5
  57
  58 #define IWL1000_FW_PRE "iwlwifi-1000-"
  59 #define IWL1000_MODULE_FIRMWARE(api) IWL1000_FW_PRE #api ".ucode"
  60
  61 #define IWL100_FW_PRE "iwlwifi-100-"
  62 #define IWL100_MODULE_FIRMWARE(api) IWL100_FW_PRE #api ".ucode"
  63
  64
  65 /*
  66  * For 1000, use advance thermal throttling critical temperature threshold,
  67  * but legacy thermal management implementation for now.
  68  * This is for the reason of 1000 uCode using advance thermal throttling API
  69  * but not implement ct_kill_exit based on ct_kill exit temperature
  70  * so the thermal throttling will still based on legacy thermal throttling
  71  * management.
  72  * The code here need to be modified once 1000 uCode has the advanced thermal
  73  * throttling algorithm in place
  74  */
  75 static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
  76 {
  77         /* want Celsius */
  78         priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
  79         priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
  80 }
  81
  82 /* NIC configuration for 1000 series */
  83 static void iwl1000_nic_config(struct iwl_priv *priv)
  84 {
  85         /* set CSR_HW_CONFIG_REG for uCode use */
  86         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
  87                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  88                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
  89
  90         /* Setting digital SVR for 1000 card to 1.32V */
  91         /* locking is acquired in iwl_set_bits_mask_prph() function */
  92         iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
  93                                 APMG_SVR_DIGITAL_VOLTAGE_1_32,
  94                                 ~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
  95 }
  96
  97 static struct iwl_sensitivity_ranges iwl1000_sensitivity = {
  98         .min_nrg_cck = 95,
  99         .max_nrg_cck = 0, /* not used, set to 0 */
 100         .auto_corr_min_ofdm = 90,
 101         .auto_corr_min_ofdm_mrc = 170,
 102         .auto_corr_min_ofdm_x1 = 120,
 103         .auto_corr_min_ofdm_mrc_x1 = 240,
 104
 105         .auto_corr_max_ofdm = 120,
 106         .auto_corr_max_ofdm_mrc = 210,
 107         .auto_corr_max_ofdm_x1 = 155,
 108         .auto_corr_max_ofdm_mrc_x1 = 290,
 109
 110         .auto_corr_min_cck = 125,
 111         .auto_corr_max_cck = 200,
 112         .auto_corr_min_cck_mrc = 170,
 113         .auto_corr_max_cck_mrc = 400,
 114         .nrg_th_cck = 95,
 115         .nrg_th_ofdm = 95,
 116
 117         .barker_corr_th_min = 190,
 118         .barker_corr_th_min_mrc = 390,
 119         .nrg_th_cca = 62,
 120 };
 121
 122 static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
 123 {
 124         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
 125             priv->cfg->mod_params->num_of_queues <= IWLAGN_NUM_QUEUES)
 126                 priv->cfg->base_params->num_of_queues =
 127                         priv->cfg->mod_params->num_of_queues;
 128
 129         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
 130         priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
 131         priv->hw_params.scd_bc_tbls_size =
 132                         priv->cfg->base_params->num_of_queues *
 133                         sizeof(struct iwlagn_scd_bc_tbl);
 134         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 135         priv->hw_params.max_stations = IWLAGN_STATION_COUNT;
 136         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 137
 138         priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
 139         priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
 140
 141         priv->hw_params.ht40_channel =  BIT(IEEE80211_BAND_2GHZ) |
 142                                         BIT(IEEE80211_BAND_5GHZ);
 143         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 144
 145         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 146         if (priv->cfg->rx_with_siso_diversity)
 147                 priv->hw_params.rx_chains_num = 1;
 148         else
 149                 priv->hw_params.rx_chains_num =
 150                         num_of_ant(priv->cfg->valid_rx_ant);
 151         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 152         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 153
 154         iwl1000_set_ct_threshold(priv);
 155
 156         /* Set initial sensitivity parameters */
 157         /* Set initial calibration set */
 158         priv->hw_params.sens = &iwl1000_sensitivity;
 159         priv->hw_params.calib_init_cfg =
 160                         BIT(IWL_CALIB_XTAL)             |
 161                         BIT(IWL_CALIB_LO)               |
 162                         BIT(IWL_CALIB_TX_IQ)            |
 163                         BIT(IWL_CALIB_TX_IQ_PERD)       |
 164                         BIT(IWL_CALIB_BASE_BAND);
 165         if (priv->cfg->need_dc_calib)
 166                 priv->hw_params.calib_init_cfg |= BIT(IWL_CALIB_DC);
 167
 168         priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS;
 169
 170         return 0;
 171 }
 172
 173 static struct iwl_lib_ops iwl1000_lib = {
 174         .set_hw_params = iwl1000_hw_set_hw_params,
 175         .txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
 176         .txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
 177         .txq_set_sched = iwlagn_txq_set_sched,
 178         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
 179         .txq_free_tfd = iwl_hw_txq_free_tfd,
 180         .txq_init = iwl_hw_tx_queue_init,
 181         .rx_handler_setup = iwlagn_rx_handler_setup,
 182         .setup_deferred_work = iwlagn_setup_deferred_work,
 183         .is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
 184         .send_tx_power = iwlagn_send_tx_power,
 185         .update_chain_flags = iwl_update_chain_flags,
 186         .apm_ops = {
 187                 .init = iwl_apm_init,
 188                 .config = iwl1000_nic_config,
 189         },
 190         .eeprom_ops = {
 191                 .regulatory_bands = {
 192                         EEPROM_REG_BAND_1_CHANNELS,
 193                         EEPROM_REG_BAND_2_CHANNELS,
 194                         EEPROM_REG_BAND_3_CHANNELS,
 195                         EEPROM_REG_BAND_4_CHANNELS,
 196                         EEPROM_REG_BAND_5_CHANNELS,
 197                         EEPROM_REG_BAND_24_HT40_CHANNELS,
 198                         EEPROM_REGULATORY_BAND_NO_HT40,
 199                 },
 200                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
 201                 .release_semaphore = iwlcore_eeprom_release_semaphore,
 202                 .calib_version  = iwlagn_eeprom_calib_version,
 203                 .query_addr = iwlagn_eeprom_query_addr,
 204         },
 205         .temp_ops = {
 206                 .temperature = iwlagn_temperature,
 207          },
 208         .debugfs_ops = {
 209                 .rx_stats_read = iwl_ucode_rx_stats_read,
 210                 .tx_stats_read = iwl_ucode_tx_stats_read,
 211                 .general_stats_read = iwl_ucode_general_stats_read,
 212                 .bt_stats_read = iwl_ucode_bt_stats_read,
 213                 .reply_tx_error = iwl_reply_tx_error_read,
 214         },
 215         .txfifo_flush = iwlagn_txfifo_flush,
 216         .dev_txfifo_flush = iwlagn_dev_txfifo_flush,
 217 };
 218
 219 static const struct iwl_ops iwl1000_ops = {
 220         .lib = &iwl1000_lib,
 221         .hcmd = &iwlagn_hcmd,
 222         .utils = &iwlagn_hcmd_utils,
 223 };
 224
 225 static struct iwl_base_params iwl1000_base_params = {
 226         .num_of_queues = IWLAGN_NUM_QUEUES,
 227         .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
 228         .eeprom_size = OTP_LOW_IMAGE_SIZE,
 229         .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
 230         .max_ll_items = OTP_MAX_LL_ITEMS_1000,
 231         .shadow_ram_support = false,
 232         .led_compensation = 51,
 233         .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
 234         .support_ct_kill_exit = true,
 235         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
 236         .chain_noise_scale = 1000,
 237         .wd_timeout = IWL_DEF_WD_TIMEOUT,
 238         .max_event_log_size = 128,
 239 };
 240 static struct iwl_ht_params iwl1000_ht_params = {
 241         .ht_greenfield_support = true,
 242         .use_rts_for_aggregation = true, /* use rts/cts protection */
 243 };
 244
 245 #define IWL_DEVICE_1000                                         \
 246         .fw_name_pre = IWL1000_FW_PRE,                          \
 247         .ucode_api_max = IWL1000_UCODE_API_MAX,                 \
 248         .ucode_api_min = IWL1000_UCODE_API_MIN,                 \
 249         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
 250         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
 251         .ops = &iwl1000_ops,                                    \
 252         .mod_params = &iwlagn_mod_params,                       \
 253         .base_params = &iwl1000_base_params,                    \
 254         .led_mode = IWL_LED_BLINK
 255
 256 struct iwl_cfg iwl1000_bgn_cfg = {
 257         .name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
 258         IWL_DEVICE_1000,
 259         .ht_params = &iwl1000_ht_params,
 260 };
 261
 262 struct iwl_cfg iwl1000_bg_cfg = {
 263         .name = "Intel(R) Centrino(R) Wireless-N 1000 BG",
 264         IWL_DEVICE_1000,
 265 };
 266
 267 #define IWL_DEVICE_100                                          \
 268         .fw_name_pre = IWL100_FW_PRE,                           \
 269         .ucode_api_max = IWL100_UCODE_API_MAX,                  \
 270         .ucode_api_min = IWL100_UCODE_API_MIN,                  \
 271         .eeprom_ver = EEPROM_1000_EEPROM_VERSION,               \
 272         .eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,       \
 273         .ops = &iwl1000_ops,                                    \
 274         .mod_params = &iwlagn_mod_params,                       \
 275         .base_params = &iwl1000_base_params,                    \
 276         .led_mode = IWL_LED_RF_STATE,                           \
 277         .rx_with_siso_diversity = true
 278
 279 struct iwl_cfg iwl100_bgn_cfg = {
 280         .name = "Intel(R) Centrino(R) Wireless-N 100 BGN",
 281         IWL_DEVICE_100,
 282         .ht_params = &iwl1000_ht_params,
 283 };
 284
 285 struct iwl_cfg iwl100_bg_cfg = {
 286         .name = "Intel(R) Centrino(R) Wireless-N 100 BG",
 287         IWL_DEVICE_100,
 288 };
 289
 290 MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX));
 291 MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_MAX));