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linux/drivers/net/wireless/iwlwifi/iwl-1000.c
Johannes Berg 2c810ccdba iwlwifi: rework broadcast station management 
Currently, the broadcast station is managed along
with the interface type, rather than always being
present. That leads to a bug with injection -- it
is currently not possible to inject frames when
the only virtual interface is a monitor, because
in that the required broadcast station is missing.

Additionally, allocating and deallocating the
broadcast station's LQ all the time is wasteful,
and the code to support this is fairly complex.

So this changes completely the way we manage the
broadcast station. Rather than manage it along
with any interface, we now allocate it when we
bring the device up, and remove it again when we
bring the device down. When we bring the device
up, we don't immediately program the broadcast
station into it, instead we just mark it active
and rely on the next restore cycle to upload it
to the device. This works because an unassociated
RXON is always required at least once to set up
device parameters, which implies a reprogramming
of stations into the device.

As we now manage all stations properly, there no
longer is a need for forcing a clearing of them
via iwl_clear_ucode_stations(), which can become
a lot simpler.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
2010-05-10 15:09:02 -07:00

300 lines
9.8 KiB
C
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/******************************************************************************
*
* Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include <asm/unaligned.h>
#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-sta.h"
#include "iwl-agn.h"
#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-agn-led.h"
#include "iwl-agn-debugfs.h"
/* Highest firmware API version supported */
#define IWL1000_UCODE_API_MAX 3
/* Lowest firmware API version supported */
#define IWL1000_UCODE_API_MIN 1
#define IWL1000_FW_PRE "iwlwifi-1000-"
#define _IWL1000_MODULE_FIRMWARE(api) IWL1000_FW_PRE #api ".ucode"
#define IWL1000_MODULE_FIRMWARE(api) _IWL1000_MODULE_FIRMWARE(api)
/*
* For 1000, use advance thermal throttling critical temperature threshold,
* but legacy thermal management implementation for now.
* This is for the reason of 1000 uCode using advance thermal throttling API
* but not implement ct_kill_exit based on ct_kill exit temperature
* so the thermal throttling will still based on legacy thermal throttling
* management.
* The code here need to be modified once 1000 uCode has the advanced thermal
* throttling algorithm in place
*/
static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
{
/* want Celsius */
priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
}
/* NIC configuration for 1000 series */
static void iwl1000_nic_config(struct iwl_priv *priv)
{
/* set CSR_HW_CONFIG_REG for uCode use */
iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
/* Setting digital SVR for 1000 card to 1.32V */
/* locking is acquired in iwl_set_bits_mask_prph() function */
iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
APMG_SVR_DIGITAL_VOLTAGE_1_32,
~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
}
static struct iwl_sensitivity_ranges iwl1000_sensitivity = {
.min_nrg_cck = 95,
.max_nrg_cck = 0, /* not used, set to 0 */
.auto_corr_min_ofdm = 90,
.auto_corr_min_ofdm_mrc = 170,
.auto_corr_min_ofdm_x1 = 120,
.auto_corr_min_ofdm_mrc_x1 = 240,
.auto_corr_max_ofdm = 120,
.auto_corr_max_ofdm_mrc = 210,
.auto_corr_max_ofdm_x1 = 155,
.auto_corr_max_ofdm_mrc_x1 = 290,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 200,
.auto_corr_min_cck_mrc = 170,
.auto_corr_max_cck_mrc = 400,
.nrg_th_cck = 95,
.nrg_th_ofdm = 95,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 390,
.nrg_th_cca = 62,
};
static int iwl1000_hw_set_hw_params(struct iwl_priv *priv)
{
if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
priv->cfg->mod_params->num_of_queues <= IWLAGN_NUM_QUEUES)
priv->cfg->num_of_queues =
priv->cfg->mod_params->num_of_queues;
priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
priv->hw_params.dma_chnl_num = FH50_TCSR_CHNL_NUM;
priv->hw_params.scd_bc_tbls_size =
priv->cfg->num_of_queues *
sizeof(struct iwlagn_scd_bc_tbl);
priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
priv->hw_params.max_stations = IWL5000_STATION_COUNT;
priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
priv->hw_params.max_data_size = IWLAGN_RTC_DATA_SIZE;
priv->hw_params.max_inst_size = IWLAGN_RTC_INST_SIZE;
priv->hw_params.max_bsm_size = 0;
priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_2GHZ) |
BIT(IEEE80211_BAND_5GHZ);
priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
/* Set initial sensitivity parameters */
/* Set initial calibration set */
priv->hw_params.sens = &iwl1000_sensitivity;
priv->hw_params.calib_init_cfg =
BIT(IWL_CALIB_XTAL) |
BIT(IWL_CALIB_LO) |
BIT(IWL_CALIB_TX_IQ) |
BIT(IWL_CALIB_TX_IQ_PERD) |
BIT(IWL_CALIB_BASE_BAND);
return 0;
}
static struct iwl_lib_ops iwl1000_lib = {
.set_hw_params = iwl1000_hw_set_hw_params,
.txq_update_byte_cnt_tbl = iwlagn_txq_update_byte_cnt_tbl,
.txq_inval_byte_cnt_tbl = iwlagn_txq_inval_byte_cnt_tbl,
.txq_set_sched = iwlagn_txq_set_sched,
.txq_agg_enable = iwlagn_txq_agg_enable,
.txq_agg_disable = iwlagn_txq_agg_disable,
.txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
.txq_free_tfd = iwl_hw_txq_free_tfd,
.txq_init = iwl_hw_tx_queue_init,
.rx_handler_setup = iwlagn_rx_handler_setup,
.setup_deferred_work = iwlagn_setup_deferred_work,
.is_valid_rtc_data_addr = iwlagn_hw_valid_rtc_data_addr,
.load_ucode = iwlagn_load_ucode,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.dump_csr = iwl_dump_csr,
.dump_fh = iwl_dump_fh,
.init_alive_start = iwlagn_init_alive_start,
.alive_notify = iwlagn_alive_notify,
.send_tx_power = iwlagn_send_tx_power,
.update_chain_flags = iwl_update_chain_flags,
.apm_ops = {
.init = iwl_apm_init,
.stop = iwl_apm_stop,
.config = iwl1000_nic_config,
.set_pwr_src = iwl_set_pwr_src,
},
.eeprom_ops = {
.regulatory_bands = {
EEPROM_REG_BAND_1_CHANNELS,
EEPROM_REG_BAND_2_CHANNELS,
EEPROM_REG_BAND_3_CHANNELS,
EEPROM_REG_BAND_4_CHANNELS,
EEPROM_REG_BAND_5_CHANNELS,
EEPROM_REG_BAND_24_HT40_CHANNELS,
EEPROM_REG_BAND_52_HT40_CHANNELS
},
.verify_signature = iwlcore_eeprom_verify_signature,
.acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
.release_semaphore = iwlcore_eeprom_release_semaphore,
.calib_version = iwlagn_eeprom_calib_version,
.query_addr = iwlagn_eeprom_query_addr,
},
.post_associate = iwl_post_associate,
.isr = iwl_isr_ict,
.config_ap = iwl_config_ap,
.temp_ops = {
.temperature = iwlagn_temperature,
.set_ct_kill = iwl1000_set_ct_threshold,
},
.manage_ibss_station = iwlagn_manage_ibss_station,
.debugfs_ops = {
.rx_stats_read = iwl_ucode_rx_stats_read,
.tx_stats_read = iwl_ucode_tx_stats_read,
.general_stats_read = iwl_ucode_general_stats_read,
},
.recover_from_tx_stall = iwl_bg_monitor_recover,
.check_plcp_health = iwl_good_plcp_health,
.check_ack_health = iwl_good_ack_health,
};
static const struct iwl_ops iwl1000_ops = {
.lib = &iwl1000_lib,
.hcmd = &iwlagn_hcmd,
.utils = &iwlagn_hcmd_utils,
.led = &iwlagn_led_ops,
};
struct iwl_cfg iwl1000_bgn_cfg = {
.name = "Intel(R) Centrino(R) Wireless-N 1000 BGN",
.fw_name_pre = IWL1000_FW_PRE,
.ucode_api_max = IWL1000_UCODE_API_MAX,
.ucode_api_min = IWL1000_UCODE_API_MIN,
.sku = IWL_SKU_G|IWL_SKU_N,
.ops = &iwl1000_ops,
.eeprom_size = OTP_LOW_IMAGE_SIZE,
.eeprom_ver = EEPROM_1000_EEPROM_VERSION,
.eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,
.num_of_queues = IWLAGN_NUM_QUEUES,
.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
.mod_params = &iwlagn_mod_params,
.valid_tx_ant = ANT_A,
.valid_rx_ant = ANT_AB,
.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
.set_l0s = true,
.use_bsm = false,
.max_ll_items = OTP_MAX_LL_ITEMS_1000,
.shadow_ram_support = false,
.ht_greenfield_support = true,
.led_compensation = 51,
.use_rts_for_ht = true, /* use rts/cts protection */
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
.support_ct_kill_exit = true,
.plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
.chain_noise_scale = 1000,
.monitor_recover_period = IWL_MONITORING_PERIOD,
.max_event_log_size = 128,
.ucode_tracing = true,
.sensitivity_calib_by_driver = true,
.chain_noise_calib_by_driver = true,
};
struct iwl_cfg iwl1000_bg_cfg = {
.name = "Intel(R) Centrino(R) Wireless-N 1000 BG",
.fw_name_pre = IWL1000_FW_PRE,
.ucode_api_max = IWL1000_UCODE_API_MAX,
.ucode_api_min = IWL1000_UCODE_API_MIN,
.sku = IWL_SKU_G,
.ops = &iwl1000_ops,
.eeprom_size = OTP_LOW_IMAGE_SIZE,
.eeprom_ver = EEPROM_1000_EEPROM_VERSION,
.eeprom_calib_ver = EEPROM_1000_TX_POWER_VERSION,
.num_of_queues = IWLAGN_NUM_QUEUES,
.num_of_ampdu_queues = IWLAGN_NUM_AMPDU_QUEUES,
.mod_params = &iwlagn_mod_params,
.valid_tx_ant = ANT_A,
.valid_rx_ant = ANT_AB,
.pll_cfg_val = CSR50_ANA_PLL_CFG_VAL,
.set_l0s = true,
.use_bsm = false,
.max_ll_items = OTP_MAX_LL_ITEMS_1000,
.shadow_ram_support = false,
.led_compensation = 51,
.chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
.support_ct_kill_exit = true,
.plcp_delta_threshold = IWL_MAX_PLCP_ERR_EXT_LONG_THRESHOLD_DEF,
.chain_noise_scale = 1000,
.monitor_recover_period = IWL_MONITORING_PERIOD,
.max_event_log_size = 128,
.ucode_tracing = true,
.sensitivity_calib_by_driver = true,
.chain_noise_calib_by_driver = true,
};
MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX));
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