1/****************************************************************************** 2 * 3 * Copyright(c) 2007 - 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/delay.h> 31#include <linux/sched.h> 32#include <linux/skbuff.h> 33#include <linux/netdevice.h> 34#include <net/mac80211.h> 35#include <linux/etherdevice.h> 36#include <asm/unaligned.h> 37#include <linux/stringify.h> 38 39#include "iwl-eeprom.h" 40#include "iwl-dev.h" 41#include "iwl-core.h" 42#include "iwl-io.h" 43#include "iwl-agn.h" 44#include "iwl-agn-hw.h" 45#include "iwl-trans.h" 46#include "iwl-shared.h" 47#include "iwl-cfg.h" 48 49/* Highest firmware API version supported */ 50#define IWL5000_UCODE_API_MAX 5 51#define IWL5150_UCODE_API_MAX 2 52 53/* Lowest firmware API version supported */ 54#define IWL5000_UCODE_API_MIN 1 55#define IWL5150_UCODE_API_MIN 1 56 57#define IWL5000_FW_PRE "iwlwifi-5000-" 58#define IWL5000_MODULE_FIRMWARE(api) IWL5000_FW_PRE __stringify(api) ".ucode" 59 60#define IWL5150_FW_PRE "iwlwifi-5150-" 61#define IWL5150_MODULE_FIRMWARE(api) IWL5150_FW_PRE __stringify(api) ".ucode" 62 63/* NIC configuration for 5000 series */ 64static void iwl5000_nic_config(struct iwl_priv *priv) 65{ 66 unsigned long flags; 67 68 iwl_rf_config(priv); 69 70 spin_lock_irqsave(&priv->shrd->lock, flags); 71 72 /* W/A : NIC is stuck in a reset state after Early PCIe power off 73 * (PCIe power is lost before PERST# is asserted), 74 * causing ME FW to lose ownership and not being able to obtain it back. 75 */ 76 iwl_set_bits_mask_prph(bus(priv), APMG_PS_CTRL_REG, 77 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, 78 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); 79 80 81 spin_unlock_irqrestore(&priv->shrd->lock, flags); 82} 83 84static struct iwl_sensitivity_ranges iwl5000_sensitivity = { 85 .min_nrg_cck = 100, 86 .max_nrg_cck = 0, /* not used, set to 0 */ 87 .auto_corr_min_ofdm = 90, 88 .auto_corr_min_ofdm_mrc = 170, 89 .auto_corr_min_ofdm_x1 = 105, 90 .auto_corr_min_ofdm_mrc_x1 = 220, 91 92 .auto_corr_max_ofdm = 120, 93 .auto_corr_max_ofdm_mrc = 210, 94 .auto_corr_max_ofdm_x1 = 120, 95 .auto_corr_max_ofdm_mrc_x1 = 240, 96 97 .auto_corr_min_cck = 125, 98 .auto_corr_max_cck = 200, 99 .auto_corr_min_cck_mrc = 200, 100 .auto_corr_max_cck_mrc = 400, 101 .nrg_th_cck = 100, 102 .nrg_th_ofdm = 100, 103 104 .barker_corr_th_min = 190, 105 .barker_corr_th_min_mrc = 390, 106 .nrg_th_cca = 62, 107}; 108 109static struct iwl_sensitivity_ranges iwl5150_sensitivity = { 110 .min_nrg_cck = 95, 111 .max_nrg_cck = 0, /* not used, set to 0 */ 112 .auto_corr_min_ofdm = 90, 113 .auto_corr_min_ofdm_mrc = 170, 114 .auto_corr_min_ofdm_x1 = 105, 115 .auto_corr_min_ofdm_mrc_x1 = 220, 116 117 .auto_corr_max_ofdm = 120, 118 .auto_corr_max_ofdm_mrc = 210, 119 /* max = min for performance bug in 5150 DSP */ 120 .auto_corr_max_ofdm_x1 = 105, 121 .auto_corr_max_ofdm_mrc_x1 = 220, 122 123 .auto_corr_min_cck = 125, 124 .auto_corr_max_cck = 200, 125 .auto_corr_min_cck_mrc = 170, 126 .auto_corr_max_cck_mrc = 400, 127 .nrg_th_cck = 95, 128 .nrg_th_ofdm = 95, 129 130 .barker_corr_th_min = 190, 131 .barker_corr_th_min_mrc = 390, 132 .nrg_th_cca = 62, 133}; 134 135#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF (-5) 136 137static s32 iwl_temp_calib_to_offset(struct iwl_shared *shrd) 138{ 139 u16 temperature, voltage; 140 __le16 *temp_calib = (__le16 *)iwl_eeprom_query_addr(shrd, 141 EEPROM_KELVIN_TEMPERATURE); 142 143 temperature = le16_to_cpu(temp_calib[0]); 144 voltage = le16_to_cpu(temp_calib[1]); 145 146 /* offset = temp - volt / coeff */ 147 return (s32)(temperature - voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF); 148} 149 150static void iwl5150_set_ct_threshold(struct iwl_priv *priv) 151{ 152 const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF; 153 s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) - 154 iwl_temp_calib_to_offset(priv->shrd); 155 156 hw_params(priv).ct_kill_threshold = threshold * volt2temp_coef; 157} 158 159static void iwl5000_set_ct_threshold(struct iwl_priv *priv) 160{ 161 /* want Celsius */ 162 hw_params(priv).ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY; 163} 164 165static int iwl5000_hw_set_hw_params(struct iwl_priv *priv) 166{ 167 if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES && 168 iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES) 169 cfg(priv)->base_params->num_of_queues = 170 iwlagn_mod_params.num_of_queues; 171 172 hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues; 173 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 174 175 hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE; 176 hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE; 177 178 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) | 179 BIT(IEEE80211_BAND_5GHZ); 180 181 hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant); 182 hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant); 183 hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant; 184 hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant; 185 186 iwl5000_set_ct_threshold(priv); 187 188 /* Set initial sensitivity parameters */ 189 hw_params(priv).sens = &iwl5000_sensitivity; 190 191 return 0; 192} 193 194static int iwl5150_hw_set_hw_params(struct iwl_priv *priv) 195{ 196 if (iwlagn_mod_params.num_of_queues >= IWL_MIN_NUM_QUEUES && 197 iwlagn_mod_params.num_of_queues <= IWLAGN_NUM_QUEUES) 198 cfg(priv)->base_params->num_of_queues = 199 iwlagn_mod_params.num_of_queues; 200 201 hw_params(priv).max_txq_num = cfg(priv)->base_params->num_of_queues; 202 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; 203 204 hw_params(priv).max_data_size = IWLAGN_RTC_DATA_SIZE; 205 hw_params(priv).max_inst_size = IWLAGN_RTC_INST_SIZE; 206 207 hw_params(priv).ht40_channel = BIT(IEEE80211_BAND_2GHZ) | 208 BIT(IEEE80211_BAND_5GHZ); 209 210 hw_params(priv).tx_chains_num = num_of_ant(cfg(priv)->valid_tx_ant); 211 hw_params(priv).rx_chains_num = num_of_ant(cfg(priv)->valid_rx_ant); 212 hw_params(priv).valid_tx_ant = cfg(priv)->valid_tx_ant; 213 hw_params(priv).valid_rx_ant = cfg(priv)->valid_rx_ant; 214 215 iwl5150_set_ct_threshold(priv); 216 217 /* Set initial sensitivity parameters */ 218 hw_params(priv).sens = &iwl5150_sensitivity; 219 220 return 0; 221} 222 223static void iwl5150_temperature(struct iwl_priv *priv) 224{ 225 u32 vt = 0; 226 s32 offset = iwl_temp_calib_to_offset(priv->shrd); 227 228 vt = le32_to_cpu(priv->statistics.common.temperature); 229 vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset; 230 /* now vt hold the temperature in Kelvin */ 231 priv->temperature = KELVIN_TO_CELSIUS(vt); 232 iwl_tt_handler(priv); 233} 234 235static int iwl5000_hw_channel_switch(struct iwl_priv *priv, 236 struct ieee80211_channel_switch *ch_switch) 237{ 238 /* 239 * MULTI-FIXME 240 * See iwlagn_mac_channel_switch. 241 */ 242 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 243 struct iwl5000_channel_switch_cmd cmd; 244 const struct iwl_channel_info *ch_info; 245 u32 switch_time_in_usec, ucode_switch_time; 246 u16 ch; 247 u32 tsf_low; 248 u8 switch_count; 249 u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval); 250 struct ieee80211_vif *vif = ctx->vif; 251 struct iwl_host_cmd hcmd = { 252 .id = REPLY_CHANNEL_SWITCH, 253 .len = { sizeof(cmd), }, 254 .flags = CMD_SYNC, 255 .data = { &cmd, }, 256 }; 257 258 cmd.band = priv->band == IEEE80211_BAND_2GHZ; 259 ch = ch_switch->channel->hw_value; 260 IWL_DEBUG_11H(priv, "channel switch from %d to %d\n", 261 ctx->active.channel, ch); 262 cmd.channel = cpu_to_le16(ch); 263 cmd.rxon_flags = ctx->staging.flags; 264 cmd.rxon_filter_flags = ctx->staging.filter_flags; 265 switch_count = ch_switch->count; 266 tsf_low = ch_switch->timestamp & 0x0ffffffff; 267 /* 268 * calculate the ucode channel switch time 269 * adding TSF as one of the factor for when to switch 270 */ 271 if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) { 272 if (switch_count > ((priv->ucode_beacon_time - tsf_low) / 273 beacon_interval)) { 274 switch_count -= (priv->ucode_beacon_time - 275 tsf_low) / beacon_interval; 276 } else 277 switch_count = 0; 278 } 279 if (switch_count <= 1) 280 cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time); 281 else { 282 switch_time_in_usec = 283 vif->bss_conf.beacon_int * switch_count * TIME_UNIT; 284 ucode_switch_time = iwl_usecs_to_beacons(priv, 285 switch_time_in_usec, 286 beacon_interval); 287 cmd.switch_time = iwl_add_beacon_time(priv, 288 priv->ucode_beacon_time, 289 ucode_switch_time, 290 beacon_interval); 291 } 292 IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n", 293 cmd.switch_time); 294 ch_info = iwl_get_channel_info(priv, priv->band, ch); 295 if (ch_info) 296 cmd.expect_beacon = is_channel_radar(ch_info); 297 else { 298 IWL_ERR(priv, "invalid channel switch from %u to %u\n", 299 ctx->active.channel, ch); 300 return -EFAULT; 301 } 302 303 return iwl_trans_send_cmd(trans(priv), &hcmd); 304} 305 306static struct iwl_lib_ops iwl5000_lib = { 307 .set_hw_params = iwl5000_hw_set_hw_params, 308 .set_channel_switch = iwl5000_hw_channel_switch, 309 .nic_config = iwl5000_nic_config, 310 .eeprom_ops = { 311 .regulatory_bands = { 312 EEPROM_REG_BAND_1_CHANNELS, 313 EEPROM_REG_BAND_2_CHANNELS, 314 EEPROM_REG_BAND_3_CHANNELS, 315 EEPROM_REG_BAND_4_CHANNELS, 316 EEPROM_REG_BAND_5_CHANNELS, 317 EEPROM_REG_BAND_24_HT40_CHANNELS, 318 EEPROM_REG_BAND_52_HT40_CHANNELS 319 }, 320 }, 321 .temperature = iwlagn_temperature, 322}; 323 324static struct iwl_lib_ops iwl5150_lib = { 325 .set_hw_params = iwl5150_hw_set_hw_params, 326 .set_channel_switch = iwl5000_hw_channel_switch, 327 .nic_config = iwl5000_nic_config, 328 .eeprom_ops = { 329 .regulatory_bands = { 330 EEPROM_REG_BAND_1_CHANNELS, 331 EEPROM_REG_BAND_2_CHANNELS, 332 EEPROM_REG_BAND_3_CHANNELS, 333 EEPROM_REG_BAND_4_CHANNELS, 334 EEPROM_REG_BAND_5_CHANNELS, 335 EEPROM_REG_BAND_24_HT40_CHANNELS, 336 EEPROM_REG_BAND_52_HT40_CHANNELS 337 }, 338 }, 339 .temperature = iwl5150_temperature, 340}; 341 342static struct iwl_base_params iwl5000_base_params = { 343 .eeprom_size = IWLAGN_EEPROM_IMG_SIZE, 344 .num_of_queues = IWLAGN_NUM_QUEUES, 345 .num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES, 346 .pll_cfg_val = CSR50_ANA_PLL_CFG_VAL, 347 .led_compensation = 51, 348 .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF, 349 .chain_noise_scale = 1000, 350 .wd_timeout = IWL_LONG_WD_TIMEOUT, 351 .max_event_log_size = 512, 352 .no_idle_support = true, 353 .wd_disable = true, 354}; 355static struct iwl_ht_params iwl5000_ht_params = { 356 .ht_greenfield_support = true, 357}; 358 359#define IWL_DEVICE_5000 \ 360 .fw_name_pre = IWL5000_FW_PRE, \ 361 .ucode_api_max = IWL5000_UCODE_API_MAX, \ 362 .ucode_api_min = IWL5000_UCODE_API_MIN, \ 363 .eeprom_ver = EEPROM_5000_EEPROM_VERSION, \ 364 .eeprom_calib_ver = EEPROM_5000_TX_POWER_VERSION, \ 365 .lib = &iwl5000_lib, \ 366 .base_params = &iwl5000_base_params, \ 367 .led_mode = IWL_LED_BLINK 368 369struct iwl_cfg iwl5300_agn_cfg = { 370 .name = "Intel(R) Ultimate N WiFi Link 5300 AGN", 371 IWL_DEVICE_5000, 372 /* at least EEPROM 0x11A has wrong info */ 373 .valid_tx_ant = ANT_ABC, /* .cfg overwrite */ 374 .valid_rx_ant = ANT_ABC, /* .cfg overwrite */ 375 .ht_params = &iwl5000_ht_params, 376}; 377 378struct iwl_cfg iwl5100_bgn_cfg = { 379 .name = "Intel(R) WiFi Link 5100 BGN", 380 IWL_DEVICE_5000, 381 .valid_tx_ant = ANT_B, /* .cfg overwrite */ 382 .valid_rx_ant = ANT_AB, /* .cfg overwrite */ 383 .ht_params = &iwl5000_ht_params, 384}; 385 386struct iwl_cfg iwl5100_abg_cfg = { 387 .name = "Intel(R) WiFi Link 5100 ABG", 388 IWL_DEVICE_5000, 389 .valid_tx_ant = ANT_B, /* .cfg overwrite */ 390 .valid_rx_ant = ANT_AB, /* .cfg overwrite */ 391}; 392 393struct iwl_cfg iwl5100_agn_cfg = { 394 .name = "Intel(R) WiFi Link 5100 AGN", 395 IWL_DEVICE_5000, 396 .valid_tx_ant = ANT_B, /* .cfg overwrite */ 397 .valid_rx_ant = ANT_AB, /* .cfg overwrite */ 398 .ht_params = &iwl5000_ht_params, 399}; 400 401struct iwl_cfg iwl5350_agn_cfg = { 402 .name = "Intel(R) WiMAX/WiFi Link 5350 AGN", 403 .fw_name_pre = IWL5000_FW_PRE, 404 .ucode_api_max = IWL5000_UCODE_API_MAX, 405 .ucode_api_min = IWL5000_UCODE_API_MIN, 406 .eeprom_ver = EEPROM_5050_EEPROM_VERSION, 407 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION, 408 .lib = &iwl5000_lib, 409 .base_params = &iwl5000_base_params, 410 .ht_params = &iwl5000_ht_params, 411 .led_mode = IWL_LED_BLINK, 412 .internal_wimax_coex = true, 413}; 414 415#define IWL_DEVICE_5150 \ 416 .fw_name_pre = IWL5150_FW_PRE, \ 417 .ucode_api_max = IWL5150_UCODE_API_MAX, \ 418 .ucode_api_min = IWL5150_UCODE_API_MIN, \ 419 .eeprom_ver = EEPROM_5050_EEPROM_VERSION, \ 420 .eeprom_calib_ver = EEPROM_5050_TX_POWER_VERSION, \ 421 .lib = &iwl5150_lib, \ 422 .base_params = &iwl5000_base_params, \ 423 .no_xtal_calib = true, \ 424 .led_mode = IWL_LED_BLINK, \ 425 .internal_wimax_coex = true 426 427struct iwl_cfg iwl5150_agn_cfg = { 428 .name = "Intel(R) WiMAX/WiFi Link 5150 AGN", 429 IWL_DEVICE_5150, 430 .ht_params = &iwl5000_ht_params, 431 432}; 433 434struct iwl_cfg iwl5150_abg_cfg = { 435 .name = "Intel(R) WiMAX/WiFi Link 5150 ABG", 436 IWL_DEVICE_5150, 437}; 438 439MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX)); 440MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX)); 441