drivers/net/wireless/iwlwifi/iwl-5000.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007-2008 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 Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  23  *
  24  *****************************************************************************/
  25
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/version.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-4965.h"
  42 #include "iwl-core.h"
  43 #include "iwl-io.h"
  44 #include "iwl-helpers.h"
  45 #include "iwl-5000-hw.h"
  46
  47 #define IWL5000_UCODE_API  "-1"
  48
  49 static int iwl5000_apm_init(struct iwl_priv *priv)
  50 {
  51         int ret = 0;
  52
  53         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
  54                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
  55
  56         iwl_set_bit(priv, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL);
  57
  58         /* set "initialization complete" bit to move adapter
  59          * D0U* --> D0A* state */
  60         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
  61
  62         /* wait for clock stabilization */
  63         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
  64                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
  65                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
  66         if (ret < 0) {
  67                 IWL_DEBUG_INFO("Failed to init the card\n");
  68                 return ret;
  69         }
  70
  71         ret = iwl_grab_nic_access(priv);
  72         if (ret)
  73                 return ret;
  74
  75         /* enable DMA */
  76         iwl_write_prph(priv, APMG_CLK_EN_REG,
  77                         APMG_CLK_VAL_DMA_CLK_RQT);
  78
  79         udelay(20);
  80
  81         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
  82                         APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
  83
  84         iwl_release_nic_access(priv);
  85
  86         return ret;
  87 }
  88
  89 /*
  90  * EEPROM
  91  */
  92 static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address)
  93 {
  94         u16 offset = 0;
  95
  96         if ((address & INDIRECT_ADDRESS) == 0)
  97                 return address;
  98
  99         switch (address & INDIRECT_TYPE_MSK) {
 100         case INDIRECT_HOST:
 101                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_HOST);
 102                 break;
 103         case INDIRECT_GENERAL:
 104                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_GENERAL);
 105                 break;
 106         case INDIRECT_REGULATORY:
 107                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_REGULATORY);
 108                 break;
 109         case INDIRECT_CALIBRATION:
 110                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_CALIBRATION);
 111                 break;
 112         case INDIRECT_PROCESS_ADJST:
 113                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_PROCESS_ADJST);
 114                 break;
 115         case INDIRECT_OTHERS:
 116                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_OTHERS);
 117                 break;
 118         default:
 119                 IWL_ERROR("illegal indirect type: 0x%X\n",
 120                 address & INDIRECT_TYPE_MSK);
 121                 break;
 122         }
 123
 124         /* translate the offset from words to byte */
 125         return (address & ADDRESS_MSK) + (offset << 1);
 126 }
 127
 128 #ifdef CONFIG_IWL5000_RUN_TIME_CALIB
 129
 130 static void iwl5000_gain_computation(struct iwl_priv *priv,
 131                 u32 average_noise[NUM_RX_CHAINS],
 132                 u16 min_average_noise_antenna_i,
 133                 u32 min_average_noise)
 134 {
 135         int i;
 136         s32 delta_g;
 137         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 138
 139         /* Find Gain Code for the antennas B and C */
 140         for (i = 1; i < NUM_RX_CHAINS; i++) {
 141                 if ((data->disconn_array[i])) {
 142                         data->delta_gain_code[i] = 0;
 143                         continue;
 144                 }
 145                 delta_g = (1000 * ((s32)average_noise[0] -
 146                         (s32)average_noise[i])) / 1500;
 147                 /* bound gain by 2 bits value max, 3rd bit is sign */
 148                 data->delta_gain_code[i] =
 149                         min(abs(delta_g), CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 150
 151                 if (delta_g < 0)
 152                         /* set negative sign */
 153                         data->delta_gain_code[i] |= (1 << 2);
 154         }
 155
 156         IWL_DEBUG_CALIB("Delta gains: ANT_B = %d  ANT_C = %d\n",
 157                         data->delta_gain_code[1], data->delta_gain_code[2]);
 158
 159         if (!data->radio_write) {
 160                 struct iwl5000_calibration_chain_noise_gain_cmd cmd;
 161                 memset(&cmd, 0, sizeof(cmd));
 162
 163                 cmd.op_code = IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD;
 164                 cmd.delta_gain_1 = data->delta_gain_code[1];
 165                 cmd.delta_gain_2 = data->delta_gain_code[2];
 166                 iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD,
 167                         sizeof(cmd), &cmd, NULL);
 168
 169                 data->radio_write = 1;
 170                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 171         }
 172
 173         data->chain_noise_a = 0;
 174         data->chain_noise_b = 0;
 175         data->chain_noise_c = 0;
 176         data->chain_signal_a = 0;
 177         data->chain_signal_b = 0;
 178         data->chain_signal_c = 0;
 179         data->beacon_count = 0;
 180 }
 181
 182 static void iwl5000_chain_noise_reset(struct iwl_priv *priv)
 183 {
 184         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 185
 186         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 187                 struct iwl5000_calibration_chain_noise_reset_cmd cmd;
 188
 189                 memset(&cmd, 0, sizeof(cmd));
 190                 cmd.op_code = IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD;
 191                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 192                         sizeof(cmd), &cmd))
 193                         IWL_ERROR("Could not send REPLY_PHY_CALIBRATION_CMD\n");
 194                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 195                 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
 196         }
 197 }
 198
 199 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
 200         .min_nrg_cck = 95,
 201         .max_nrg_cck = 0,
 202         .auto_corr_min_ofdm = 90,
 203         .auto_corr_min_ofdm_mrc = 170,
 204         .auto_corr_min_ofdm_x1 = 120,
 205         .auto_corr_min_ofdm_mrc_x1 = 240,
 206
 207         .auto_corr_max_ofdm = 120,
 208         .auto_corr_max_ofdm_mrc = 210,
 209         .auto_corr_max_ofdm_x1 = 155,
 210         .auto_corr_max_ofdm_mrc_x1 = 290,
 211
 212         .auto_corr_min_cck = 125,
 213         .auto_corr_max_cck = 200,
 214         .auto_corr_min_cck_mrc = 170,
 215         .auto_corr_max_cck_mrc = 400,
 216         .nrg_th_cck = 95,
 217         .nrg_th_ofdm = 95,
 218 };
 219
 220 #endif /* CONFIG_IWL5000_RUN_TIME_CALIB */
 221
 222 static const u8 *iwl5000_eeprom_query_addr(const struct iwl_priv *priv,
 223                                            size_t offset)
 224 {
 225         u32 address = eeprom_indirect_address(priv, offset);
 226         BUG_ON(address >= priv->cfg->eeprom_size);
 227         return &priv->eeprom[address];
 228 }
 229
 230 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 231 {
 232         if ((priv->cfg->mod_params->num_of_queues > IWL50_NUM_QUEUES) ||
 233             (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) {
 234                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
 235                           IWL_MIN_NUM_QUEUES, IWL50_NUM_QUEUES);
 236                 return -EINVAL;
 237         }
 238
 239         priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
 240         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
 241         priv->hw_params.tx_cmd_len = sizeof(struct iwl4965_tx_cmd);
 242         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
 243         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
 244         if (priv->cfg->mod_params->amsdu_size_8K)
 245                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
 246         else
 247                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
 248         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
 249         priv->hw_params.max_stations = IWL5000_STATION_COUNT;
 250         priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
 251         priv->hw_params.max_data_size = IWL50_RTC_DATA_SIZE;
 252         priv->hw_params.max_inst_size = IWL50_RTC_INST_SIZE;
 253         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
 254         priv->hw_params.fat_channel =  BIT(IEEE80211_BAND_2GHZ) |
 255                                         BIT(IEEE80211_BAND_5GHZ);
 256 #ifdef CONFIG_IWL5000_RUN_TIME_CALIB
 257         priv->hw_params.sens = &iwl5000_sensitivity;
 258 #endif
 259
 260         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
 261         case CSR_HW_REV_TYPE_5100:
 262         case CSR_HW_REV_TYPE_5150:
 263                 priv->hw_params.tx_chains_num = 1;
 264                 priv->hw_params.rx_chains_num = 2;
 265                 /* FIXME: move to ANT_A, ANT_B, ANT_C enum */
 266                 priv->hw_params.valid_tx_ant = IWL_ANTENNA_MAIN;
 267                 priv->hw_params.valid_rx_ant = (IWL_ANTENNA_MAIN |
 268                                                 IWL_ANTENNA_AUX);
 269                 break;
 270         case CSR_HW_REV_TYPE_5300:
 271         case CSR_HW_REV_TYPE_5350:
 272                 priv->hw_params.tx_chains_num = 3;
 273                 priv->hw_params.rx_chains_num = 3;
 274                 /* FIXME: move to ANT_A, ANT_B, ANT_C enum */
 275                 priv->hw_params.valid_tx_ant = (IWL_ANTENNA_MAIN |
 276                                                 IWL_ANTENNA_AUX | 0x04);
 277                 priv->hw_params.valid_rx_ant = (IWL_ANTENNA_MAIN |
 278                                                 IWL_ANTENNA_AUX | 0x04);
 279                 break;
 280         }
 281
 282         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
 283         case CSR_HW_REV_TYPE_5100:
 284         case CSR_HW_REV_TYPE_5300:
 285                 /* 5X00 wants in Celsius */
 286                 priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
 287                 break;
 288         case CSR_HW_REV_TYPE_5150:
 289         case CSR_HW_REV_TYPE_5350:
 290                 /* 5X50 wants in Kelvin */
 291                 priv->hw_params.ct_kill_threshold =
 292                                 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD);
 293                 break;
 294         }
 295
 296         return 0;
 297 }
 298 static struct iwl_hcmd_ops iwl5000_hcmd = {
 299 };
 300
 301 static struct iwl_hcmd_utils_ops iwl5000_hcmd_utils = {
 302 #ifdef CONFIG_IWL5000_RUN_TIME_CALIB
 303         .gain_computation = iwl5000_gain_computation,
 304         .chain_noise_reset = iwl5000_chain_noise_reset,
 305 #endif
 306 };
 307
 308 static struct iwl_lib_ops iwl5000_lib = {
 309         .set_hw_params = iwl5000_hw_set_hw_params,
 310         .apm_ops = {
 311                 .init = iwl5000_apm_init,
 312                 .set_pwr_src = iwl4965_set_pwr_src,
 313         },
 314         .eeprom_ops = {
 315                 .regulatory_bands = {
 316                         EEPROM_5000_REG_BAND_1_CHANNELS,
 317                         EEPROM_5000_REG_BAND_2_CHANNELS,
 318                         EEPROM_5000_REG_BAND_3_CHANNELS,
 319                         EEPROM_5000_REG_BAND_4_CHANNELS,
 320                         EEPROM_5000_REG_BAND_5_CHANNELS,
 321                         EEPROM_5000_REG_BAND_24_FAT_CHANNELS,
 322                         EEPROM_5000_REG_BAND_52_FAT_CHANNELS
 323                 },
 324                 .verify_signature  = iwlcore_eeprom_verify_signature,
 325                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
 326                 .release_semaphore = iwlcore_eeprom_release_semaphore,
 327                 .query_addr = iwl5000_eeprom_query_addr,
 328         },
 329 };
 330
 331 static struct iwl_ops iwl5000_ops = {
 332         .lib = &iwl5000_lib,
 333         .hcmd = &iwl5000_hcmd,
 334         .utils = &iwl5000_hcmd_utils,
 335 };
 336
 337 static struct iwl_mod_params iwl50_mod_params = {
 338         .num_of_queues = IWL50_NUM_QUEUES,
 339         .enable_qos = 1,
 340         .amsdu_size_8K = 1,
 341         /* the rest are 0 by default */
 342 };
 343
 344
 345 struct iwl_cfg iwl5300_agn_cfg = {
 346         .name = "5300AGN",
 347         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
 348         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 349         .ops = &iwl5000_ops,
 350         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
 351         .mod_params = &iwl50_mod_params,
 352 };
 353
 354 struct iwl_cfg iwl5100_agn_cfg = {
 355         .name = "5100AGN",
 356         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
 357         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 358         .ops = &iwl5000_ops,
 359         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
 360         .mod_params = &iwl50_mod_params,
 361 };
 362
 363 struct iwl_cfg iwl5350_agn_cfg = {
 364         .name = "5350AGN",
 365         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
 366         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
 367         .ops = &iwl5000_ops,
 368         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
 369         .mod_params = &iwl50_mod_params,
 370 };
 371
 372 module_param_named(disable50, iwl50_mod_params.disable, int, 0444);
 373 MODULE_PARM_DESC(disable50,
 374                   "manually disable the 50XX radio (default 0 [radio on])");
 375 module_param_named(swcrypto50, iwl50_mod_params.sw_crypto, bool, 0444);
 376 MODULE_PARM_DESC(swcrypto50,
 377                   "using software crypto engine (default 0 [hardware])\n");
 378 module_param_named(debug50, iwl50_mod_params.debug, int, 0444);
 379 MODULE_PARM_DESC(debug50, "50XX debug output mask");
 380 module_param_named(queues_num50, iwl50_mod_params.num_of_queues, int, 0444);
 381 MODULE_PARM_DESC(queues_num50, "number of hw queues in 50xx series");
 382 module_param_named(qos_enable50, iwl50_mod_params.enable_qos, int, 0444);
 383 MODULE_PARM_DESC(qos_enable50, "enable all 50XX QoS functionality");
 384 module_param_named(amsdu_size_8K50, iwl50_mod_params.amsdu_size_8K, int, 0444);
 385 MODULE_PARM_DESC(amsdu_size_8K50, "enable 8K amsdu size in 50XX series");
 386
 387