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OpenCloudOS-Kernel/drivers/net/wireless/iwlwifi/iwl-core.c

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/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2009 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.GPL.
*
* 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/etherdevice.h>
#include <net/mac80211.h>
#include "iwl-eeprom.h"
#include "iwl-dev.h" /* FIXME: remove */
#include "iwl-debug.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-power.h"
#include "iwl-sta.h"
#include "iwl-helpers.h"
MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");
#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
IWL_RATE_SISO_##s##M_PLCP, \
IWL_RATE_MIMO2_##s##M_PLCP,\
IWL_RATE_MIMO3_##s##M_PLCP,\
IWL_RATE_##r##M_IEEE, \
IWL_RATE_##ip##M_INDEX, \
IWL_RATE_##in##M_INDEX, \
IWL_RATE_##rp##M_INDEX, \
IWL_RATE_##rn##M_INDEX, \
IWL_RATE_##pp##M_INDEX, \
IWL_RATE_##np##M_INDEX }
u32 iwl_debug_level;
EXPORT_SYMBOL(iwl_debug_level);
static irqreturn_t iwl_isr(int irq, void *data);
/*
* Parameter order:
* rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
*
* If there isn't a valid next or previous rate then INV is used which
* maps to IWL_RATE_INVALID
*
*/
const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
/* FIXME:RS: ^^ should be INV (legacy) */
};
EXPORT_SYMBOL(iwl_rates);
/**
* translate ucode response to mac80211 tx status control values
*/
void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
struct ieee80211_tx_info *info)
{
struct ieee80211_tx_rate *r = &info->control.rates[0];
info->antenna_sel_tx =
((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
if (rate_n_flags & RATE_MCS_HT_MSK)
r->flags |= IEEE80211_TX_RC_MCS;
if (rate_n_flags & RATE_MCS_GF_MSK)
r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
if (rate_n_flags & RATE_MCS_HT40_MSK)
r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
if (rate_n_flags & RATE_MCS_DUP_MSK)
r->flags |= IEEE80211_TX_RC_DUP_DATA;
if (rate_n_flags & RATE_MCS_SGI_MSK)
r->flags |= IEEE80211_TX_RC_SHORT_GI;
r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
}
EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
{
int idx = 0;
/* HT rate format */
if (rate_n_flags & RATE_MCS_HT_MSK) {
idx = (rate_n_flags & 0xff);
if (idx >= IWL_RATE_MIMO3_6M_PLCP)
idx = idx - IWL_RATE_MIMO3_6M_PLCP;
else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
idx = idx - IWL_RATE_MIMO2_6M_PLCP;
idx += IWL_FIRST_OFDM_RATE;
/* skip 9M not supported in ht*/
if (idx >= IWL_RATE_9M_INDEX)
idx += 1;
if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
return idx;
/* legacy rate format, search for match in table */
} else {
for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
return idx;
}
return -1;
}
EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
{
int idx = 0;
int band_offset = 0;
/* HT rate format: mac80211 wants an MCS number, which is just LSB */
if (rate_n_flags & RATE_MCS_HT_MSK) {
idx = (rate_n_flags & 0xff);
return idx;
/* Legacy rate format, search for match in table */
} else {
if (band == IEEE80211_BAND_5GHZ)
band_offset = IWL_FIRST_OFDM_RATE;
for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
return idx - band_offset;
}
return -1;
}
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
{
int i;
u8 ind = ant;
for (i = 0; i < RATE_ANT_NUM - 1; i++) {
ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
if (priv->hw_params.valid_tx_ant & BIT(ind))
return ind;
}
return ant;
}
const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
EXPORT_SYMBOL(iwl_bcast_addr);
/* This function both allocates and initializes hw and priv. */
struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
struct ieee80211_ops *hw_ops)
{
struct iwl_priv *priv;
/* mac80211 allocates memory for this device instance, including
* space for this driver's private structure */
struct ieee80211_hw *hw =
ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
if (hw == NULL) {
printk(KERN_ERR "%s: Can not allocate network device\n",
cfg->name);
goto out;
}
priv = hw->priv;
priv->hw = hw;
out:
return hw;
}
EXPORT_SYMBOL(iwl_alloc_all);
void iwl_hw_detect(struct iwl_priv *priv)
{
priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
}
EXPORT_SYMBOL(iwl_hw_detect);
int iwl_hw_nic_init(struct iwl_priv *priv)
{
unsigned long flags;
struct iwl_rx_queue *rxq = &priv->rxq;
int ret;
/* nic_init */
spin_lock_irqsave(&priv->lock, flags);
priv->cfg->ops->lib->apm_ops.init(priv);
iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
spin_unlock_irqrestore(&priv->lock, flags);
ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
priv->cfg->ops->lib->apm_ops.config(priv);
/* Allocate the RX queue, or reset if it is already allocated */
if (!rxq->bd) {
ret = iwl_rx_queue_alloc(priv);
if (ret) {
IWL_ERR(priv, "Unable to initialize Rx queue\n");
return -ENOMEM;
}
} else
iwl_rx_queue_reset(priv, rxq);
iwl_rx_replenish(priv);
iwl_rx_init(priv, rxq);
spin_lock_irqsave(&priv->lock, flags);
rxq->need_update = 1;
iwl_rx_queue_update_write_ptr(priv, rxq);
spin_unlock_irqrestore(&priv->lock, flags);
/* Allocate and init all Tx and Command queues */
ret = iwl_txq_ctx_reset(priv);
if (ret)
return ret;
set_bit(STATUS_INIT, &priv->status);
return 0;
}
EXPORT_SYMBOL(iwl_hw_nic_init);
/*
* QoS support
*/
void iwl_activate_qos(struct iwl_priv *priv, u8 force)
{
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
priv->qos_data.def_qos_parm.qos_flags = 0;
if (priv->qos_data.qos_cap.q_AP.queue_request &&
!priv->qos_data.qos_cap.q_AP.txop_request)
priv->qos_data.def_qos_parm.qos_flags |=
QOS_PARAM_FLG_TXOP_TYPE_MSK;
if (priv->qos_data.qos_active)
priv->qos_data.def_qos_parm.qos_flags |=
QOS_PARAM_FLG_UPDATE_EDCA_MSK;
if (priv->current_ht_config.is_ht)
priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
if (force || iwl_is_associated(priv)) {
IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
priv->qos_data.qos_active,
priv->qos_data.def_qos_parm.qos_flags);
iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
sizeof(struct iwl_qosparam_cmd),
&priv->qos_data.def_qos_parm, NULL);
}
}
EXPORT_SYMBOL(iwl_activate_qos);
/*
* AC CWmin CW max AIFSN TXOP Limit TXOP Limit
* (802.11b) (802.11a/g)
* AC_BK 15 1023 7 0 0
* AC_BE 15 1023 3 0 0
* AC_VI 7 15 2 6.016ms 3.008ms
* AC_VO 3 7 2 3.264ms 1.504ms
*/
void iwl_reset_qos(struct iwl_priv *priv)
{
u16 cw_min = 15;
u16 cw_max = 1023;
u8 aifs = 2;
bool is_legacy = false;
unsigned long flags;
int i;
spin_lock_irqsave(&priv->lock, flags);
/* QoS always active in AP and ADHOC mode
* In STA mode wait for association
*/
if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
priv->iw_mode == NL80211_IFTYPE_AP)
priv->qos_data.qos_active = 1;
else
priv->qos_data.qos_active = 0;
/* check for legacy mode */
if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
(priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
(priv->iw_mode == NL80211_IFTYPE_STATION &&
(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
cw_min = 31;
is_legacy = 1;
}
if (priv->qos_data.qos_active)
aifs = 3;
/* AC_BE */
priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
if (priv->qos_data.qos_active) {
/* AC_BK */
i = 1;
priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
/* AC_VI */
i = 2;
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16((cw_min + 1) / 2 - 1);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
if (is_legacy)
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(6016);
else
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(3008);
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
/* AC_VO */
i = 3;
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16((cw_min + 1) / 4 - 1);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16((cw_min + 1) / 2 - 1);
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
if (is_legacy)
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(3264);
else
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(1504);
} else {
for (i = 1; i < 4; i++) {
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
}
}
IWL_DEBUG_QOS(priv, "set QoS to default \n");
spin_unlock_irqrestore(&priv->lock, flags);
}
EXPORT_SYMBOL(iwl_reset_qos);
#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
struct ieee80211_sta_ht_cap *ht_info,
enum ieee80211_band band)
{
u16 max_bit_rate = 0;
u8 rx_chains_num = priv->hw_params.rx_chains_num;
u8 tx_chains_num = priv->hw_params.tx_chains_num;
ht_info->cap = 0;
memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
ht_info->ht_supported = true;
if (priv->cfg->ht_greenfield_support)
ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
(WLAN_HT_CAP_SM_PS_DISABLED << 2));
max_bit_rate = MAX_BIT_RATE_20_MHZ;
if (priv->hw_params.ht40_channel & BIT(band)) {
ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
ht_info->mcs.rx_mask[4] = 0x01;
max_bit_rate = MAX_BIT_RATE_40_MHZ;
}
if (priv->cfg->mod_params->amsdu_size_8K)
ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
ht_info->mcs.rx_mask[0] = 0xFF;
if (rx_chains_num >= 2)
ht_info->mcs.rx_mask[1] = 0xFF;
if (rx_chains_num >= 3)
ht_info->mcs.rx_mask[2] = 0xFF;
/* Highest supported Rx data rate */
max_bit_rate *= rx_chains_num;
WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
/* Tx MCS capabilities */
ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
if (tx_chains_num != rx_chains_num) {
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
}
}
static void iwlcore_init_hw_rates(struct iwl_priv *priv,
struct ieee80211_rate *rates)
{
int i;
for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
rates[i].bitrate = iwl_rates[i].ieee * 5;
rates[i].hw_value = i; /* Rate scaling will work on indexes */
rates[i].hw_value_short = i;
rates[i].flags = 0;
if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
/*
* If CCK != 1M then set short preamble rate flag.
*/
rates[i].flags |=
(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
0 : IEEE80211_RATE_SHORT_PREAMBLE;
}
}
}
/**
* iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
*/
int iwlcore_init_geos(struct iwl_priv *priv)
{
struct iwl_channel_info *ch;
struct ieee80211_supported_band *sband;
struct ieee80211_channel *channels;
struct ieee80211_channel *geo_ch;
struct ieee80211_rate *rates;
int i = 0;
if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
return 0;
}
channels = kzalloc(sizeof(struct ieee80211_channel) *
priv->channel_count, GFP_KERNEL);
if (!channels)
return -ENOMEM;
rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
GFP_KERNEL);
if (!rates) {
kfree(channels);
return -ENOMEM;
}
/* 5.2GHz channels start after the 2.4GHz channels */
sband = &priv->bands[IEEE80211_BAND_5GHZ];
sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
/* just OFDM */
sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
if (priv->cfg->sku & IWL_SKU_N)
iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
IEEE80211_BAND_5GHZ);
sband = &priv->bands[IEEE80211_BAND_2GHZ];
sband->channels = channels;
/* OFDM & CCK */
sband->bitrates = rates;
sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
if (priv->cfg->sku & IWL_SKU_N)
iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
IEEE80211_BAND_2GHZ);
priv->ieee_channels = channels;
priv->ieee_rates = rates;
for (i = 0; i < priv->channel_count; i++) {
ch = &priv->channel_info[i];
/* FIXME: might be removed if scan is OK */
if (!is_channel_valid(ch))
continue;
if (is_channel_a_band(ch))
sband = &priv->bands[IEEE80211_BAND_5GHZ];
else
sband = &priv->bands[IEEE80211_BAND_2GHZ];
geo_ch = &sband->channels[sband->n_channels++];
geo_ch->center_freq =
ieee80211_channel_to_frequency(ch->channel);
geo_ch->max_power = ch->max_power_avg;
geo_ch->max_antenna_gain = 0xff;
geo_ch->hw_value = ch->channel;
if (is_channel_valid(ch)) {
if (!(ch->flags & EEPROM_CHANNEL_IBSS))
geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
if (ch->flags & EEPROM_CHANNEL_RADAR)
geo_ch->flags |= IEEE80211_CHAN_RADAR;
geo_ch->flags |= ch->ht40_extension_channel;
if (ch->max_power_avg > priv->tx_power_device_lmt)
priv->tx_power_device_lmt = ch->max_power_avg;
} else {
geo_ch->flags |= IEEE80211_CHAN_DISABLED;
}
IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
ch->channel, geo_ch->center_freq,
is_channel_a_band(ch) ? "5.2" : "2.4",
geo_ch->flags & IEEE80211_CHAN_DISABLED ?
"restricted" : "valid",
geo_ch->flags);
}
if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
priv->cfg->sku & IWL_SKU_A) {
IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
priv->pci_dev->device,
priv->pci_dev->subsystem_device);
priv->cfg->sku &= ~IWL_SKU_A;
}
IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
priv->bands[IEEE80211_BAND_2GHZ].n_channels,
priv->bands[IEEE80211_BAND_5GHZ].n_channels);
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
return 0;
}
EXPORT_SYMBOL(iwlcore_init_geos);
/*
* iwlcore_free_geos - undo allocations in iwlcore_init_geos
*/
void iwlcore_free_geos(struct iwl_priv *priv)
{
kfree(priv->ieee_channels);
kfree(priv->ieee_rates);
clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
EXPORT_SYMBOL(iwlcore_free_geos);
static bool is_single_rx_stream(struct iwl_priv *priv)
{
return !priv->current_ht_config.is_ht ||
priv->current_ht_config.single_chain_sufficient;
}
static u8 iwl_is_channel_extension(struct iwl_priv *priv,
enum ieee80211_band band,
u16 channel, u8 extension_chan_offset)
{
const struct iwl_channel_info *ch_info;
ch_info = iwl_get_channel_info(priv, band, channel);
if (!is_channel_valid(ch_info))
return 0;
if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
return !(ch_info->ht40_extension_channel &
IEEE80211_CHAN_NO_HT40PLUS);
else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
return !(ch_info->ht40_extension_channel &
IEEE80211_CHAN_NO_HT40MINUS);
return 0;
}
u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
struct ieee80211_sta_ht_cap *sta_ht_inf)
{
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
if (!ht_conf->is_ht || !ht_conf->is_40mhz)
return 0;
/* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
* the bit will not set if it is pure 40MHz case
*/
if (sta_ht_inf) {
if (!sta_ht_inf->ht_supported)
return 0;
}
#ifdef CONFIG_IWLWIFI_DEBUG
if (priv->disable_ht40)
return 0;
#endif
return iwl_is_channel_extension(priv, priv->band,
le16_to_cpu(priv->staging_rxon.channel),
ht_conf->extension_chan_offset);
}
EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
{
u16 new_val = 0;
u16 beacon_factor = 0;
beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
new_val = beacon_val / beacon_factor;
if (!new_val)
new_val = max_beacon_val;
return new_val;
}
void iwl_setup_rxon_timing(struct iwl_priv *priv)
{
u64 tsf;
s32 interval_tm, rem;
unsigned long flags;
struct ieee80211_conf *conf = NULL;
u16 beacon_int;
conf = ieee80211_get_hw_conf(priv->hw);
spin_lock_irqsave(&priv->lock, flags);
priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
if (priv->iw_mode == NL80211_IFTYPE_STATION) {
beacon_int = priv->beacon_int;
priv->rxon_timing.atim_window = 0;
} else {
beacon_int = priv->vif->bss_conf.beacon_int;
/* TODO: we need to get atim_window from upper stack
* for now we set to 0 */
priv->rxon_timing.atim_window = 0;
}
beacon_int = iwl_adjust_beacon_interval(beacon_int,
priv->hw_params.max_beacon_itrvl * 1024);
priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
interval_tm = beacon_int * 1024;
rem = do_div(tsf, interval_tm);
priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
spin_unlock_irqrestore(&priv->lock, flags);
IWL_DEBUG_ASSOC(priv,
"beacon interval %d beacon timer %d beacon tim %d\n",
le16_to_cpu(priv->rxon_timing.beacon_interval),
le32_to_cpu(priv->rxon_timing.beacon_init_val),
le16_to_cpu(priv->rxon_timing.atim_window));
}
EXPORT_SYMBOL(iwl_setup_rxon_timing);
void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
{
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
if (hw_decrypt)
rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
else
rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
}
EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
/**
* iwl_check_rxon_cmd - validate RXON structure is valid
*
* NOTE: This is really only useful during development and can eventually
* be #ifdef'd out once the driver is stable and folks aren't actively
* making changes
*/
int iwl_check_rxon_cmd(struct iwl_priv *priv)
{
int error = 0;
int counter = 1;
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
error |= le32_to_cpu(rxon->flags &
(RXON_FLG_TGJ_NARROW_BAND_MSK |
RXON_FLG_RADAR_DETECT_MSK));
if (error)
IWL_WARN(priv, "check 24G fields %d | %d\n",
counter++, error);
} else {
error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
if (error)
IWL_WARN(priv, "check 52 fields %d | %d\n",
counter++, error);
error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
if (error)
IWL_WARN(priv, "check 52 CCK %d | %d\n",
counter++, error);
}
error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
if (error)
IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
/* make sure basic rates 6Mbps and 1Mbps are supported */
error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
if (error)
IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
error |= (le16_to_cpu(rxon->assoc_id) > 2007);
if (error)
IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
if (error)
IWL_WARN(priv, "check CCK and short slot %d | %d\n",
counter++, error);
error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
if (error)
IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
counter++, error);
error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
if (error)
IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
counter++, error);
if (error)
IWL_WARN(priv, "Tuning to channel %d\n",
le16_to_cpu(rxon->channel));
if (error) {
IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
return -1;
}
return 0;
}
EXPORT_SYMBOL(iwl_check_rxon_cmd);
/**
* iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
* @priv: staging_rxon is compared to active_rxon
*
* If the RXON structure is changing enough to require a new tune,
* or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
* a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
*/
int iwl_full_rxon_required(struct iwl_priv *priv)
{
/* These items are only settable from the full RXON command */
if (!(iwl_is_associated(priv)) ||
compare_ether_addr(priv->staging_rxon.bssid_addr,
priv->active_rxon.bssid_addr) ||
compare_ether_addr(priv->staging_rxon.node_addr,
priv->active_rxon.node_addr) ||
compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
priv->active_rxon.wlap_bssid_addr) ||
(priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
(priv->staging_rxon.channel != priv->active_rxon.channel) ||
(priv->staging_rxon.air_propagation !=
priv->active_rxon.air_propagation) ||
(priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
(priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
(priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
(priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
return 1;
/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
* be updated with the RXON_ASSOC command -- however only some
* flag transitions are allowed using RXON_ASSOC */
/* Check if we are not switching bands */
if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
(priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
return 1;
/* Check if we are switching association toggle */
if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
return 1;
return 0;
}
EXPORT_SYMBOL(iwl_full_rxon_required);
u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
{
int i;
int rate_mask;
/* Set rate mask*/
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
else
rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
/* Find lowest valid rate */
for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
i = iwl_rates[i].next_ieee) {
if (rate_mask & (1 << i))
return iwl_rates[i].plcp;
}
/* No valid rate was found. Assign the lowest one */
if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
return IWL_RATE_1M_PLCP;
else
return IWL_RATE_6M_PLCP;
}
EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
{
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
if (!ht_conf->is_ht) {
rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
RXON_FLG_HT40_PROT_MSK |
RXON_FLG_HT_PROT_MSK);
return;
}
/* FIXME: if the definition of ht_protection changed, the "translation"
* will be needed for rxon->flags
*/
rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
/* Set up channel bandwidth:
* 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
/* clear the HT channel mode before set the mode */
rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
if (iwl_is_ht40_tx_allowed(priv, NULL)) {
/* pure ht40 */
if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
/* Note: control channel is opposite of extension channel */
switch (ht_conf->extension_chan_offset) {
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
break;
}
} else {
/* Note: control channel is opposite of extension channel */
switch (ht_conf->extension_chan_offset) {
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
break;
case IEEE80211_HT_PARAM_CHA_SEC_NONE:
default:
/* channel location only valid if in Mixed mode */
IWL_ERR(priv, "invalid extension channel offset\n");
break;
}
}
} else {
rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
}
if (priv->cfg->ops->hcmd->set_rxon_chain)
priv->cfg->ops->hcmd->set_rxon_chain(priv);
IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
"extension channel offset 0x%x\n",
le32_to_cpu(rxon->flags), ht_conf->ht_protection,
ht_conf->extension_chan_offset);
return;
}
EXPORT_SYMBOL(iwl_set_rxon_ht);
#define IWL_NUM_RX_CHAINS_MULTIPLE 3
#define IWL_NUM_RX_CHAINS_SINGLE 2
#define IWL_NUM_IDLE_CHAINS_DUAL 2
#define IWL_NUM_IDLE_CHAINS_SINGLE 1
/*
* Determine how many receiver/antenna chains to use.
*
* More provides better reception via diversity. Fewer saves power
* at the expense of throughput, but only when not in powersave to
* start with.
*
* MIMO (dual stream) requires at least 2, but works better with 3.
* This does not determine *which* chains to use, just how many.
*/
static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
{
/* # of Rx chains to use when expecting MIMO. */
if (is_single_rx_stream(priv))
return IWL_NUM_RX_CHAINS_SINGLE;
else
return IWL_NUM_RX_CHAINS_MULTIPLE;
}
/*
* When we are in power saving, there's no difference between
* using multiple chains or just a single chain, but due to the
* lack of SM PS we lose a lot of throughput if we use just a
* single chain.
*
* Therefore, use the active count here (which will use multiple
* chains unless connected to a legacy AP).
*/
static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
{
return active_cnt;
}
/* up to 4 chains */
static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
{
u8 res;
res = (chain_bitmap & BIT(0)) >> 0;
res += (chain_bitmap & BIT(1)) >> 1;
res += (chain_bitmap & BIT(2)) >> 2;
res += (chain_bitmap & BIT(3)) >> 3;
return res;
}
/**
* iwl_is_monitor_mode - Determine if interface in monitor mode
*
* priv->iw_mode is set in add_interface, but add_interface is
* never called for monitor mode. The only way mac80211 informs us about
* monitor mode is through configuring filters (call to configure_filter).
*/
bool iwl_is_monitor_mode(struct iwl_priv *priv)
{
return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
}
EXPORT_SYMBOL(iwl_is_monitor_mode);
/**
* iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
*
* Selects how many and which Rx receivers/antennas/chains to use.
* This should not be used for scan command ... it puts data in wrong place.
*/
void iwl_set_rxon_chain(struct iwl_priv *priv)
{
bool is_single = is_single_rx_stream(priv);
bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
u32 active_chains;
u16 rx_chain;
/* Tell uCode which antennas are actually connected.
* Before first association, we assume all antennas are connected.
* Just after first association, iwl_chain_noise_calibration()
* checks which antennas actually *are* connected. */
if (priv->chain_noise_data.active_chains)
active_chains = priv->chain_noise_data.active_chains;
else
active_chains = priv->hw_params.valid_rx_ant;
rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
/* How many receivers should we use? */
active_rx_cnt = iwl_get_active_rx_chain_count(priv);
idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
/* correct rx chain count according hw settings
* and chain noise calibration
*/
valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
if (valid_rx_cnt < active_rx_cnt)
active_rx_cnt = valid_rx_cnt;
if (valid_rx_cnt < idle_rx_cnt)
idle_rx_cnt = valid_rx_cnt;
rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
/* copied from 'iwl_bg_request_scan()' */
/* Force use of chains B and C (0x6) for Rx for 4965
* Avoid A (0x1) because of its off-channel reception on A-band.
* MIMO is not used here, but value is required */
if (iwl_is_monitor_mode(priv) &&
!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
}
priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
else
priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
priv->staging_rxon.rx_chain,
active_rx_cnt, idle_rx_cnt);
WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
active_rx_cnt < idle_rx_cnt);
}
EXPORT_SYMBOL(iwl_set_rxon_chain);
/**
* iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
* @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
* @channel: Any channel valid for the requested phymode
* In addition to setting the staging RXON, priv->phymode is also set.
*
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
* in the staging RXON flag structure based on the phymode
*/
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
{
enum ieee80211_band band = ch->band;
u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
if (!iwl_get_channel_info(priv, band, channel)) {
IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
channel, band);
return -EINVAL;
}
if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
(priv->band == band))
return 0;
priv->staging_rxon.channel = cpu_to_le16(channel);
if (band == IEEE80211_BAND_5GHZ)
priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
else
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
priv->band = band;
IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
return 0;
}
EXPORT_SYMBOL(iwl_set_rxon_channel);
void iwl_set_flags_for_band(struct iwl_priv *priv,
enum ieee80211_band band)
{
if (band == IEEE80211_BAND_5GHZ) {
priv->staging_rxon.flags &=
~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
| RXON_FLG_CCK_MSK);
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
} else {
/* Copied from iwl_post_associate() */
if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
else
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
}
}
/*
* initialize rxon structure with default values from eeprom
*/
void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
{
const struct iwl_channel_info *ch_info;
memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
switch (mode) {
case NL80211_IFTYPE_AP:
priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
break;
case NL80211_IFTYPE_STATION:
priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
break;
case NL80211_IFTYPE_ADHOC:
priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
RXON_FILTER_ACCEPT_GRP_MSK;
break;
default:
IWL_ERR(priv, "Unsupported interface type %d\n", mode);
break;
}
#if 0
/* TODO: Figure out when short_preamble would be set and cache from
* that */
if (!hw_to_local(priv->hw)->short_preamble)
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
else
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
#endif
ch_info = iwl_get_channel_info(priv, priv->band,
le16_to_cpu(priv->active_rxon.channel));
if (!ch_info)
ch_info = &priv->channel_info[0];
/*
* in some case A channels are all non IBSS
* in this case force B/G channel
*/
if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
!(is_channel_ibss(ch_info)))
ch_info = &priv->channel_info[0];
priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
priv->band = ch_info->band;
iwl_set_flags_for_band(priv, priv->band);
priv->staging_rxon.ofdm_basic_rates =
(IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
priv->staging_rxon.cck_basic_rates =
(IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
/* clear both MIX and PURE40 mode flag */
priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
RXON_FLG_CHANNEL_MODE_PURE_40);
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
}
EXPORT_SYMBOL(iwl_connection_init_rx_config);
static void iwl_set_rate(struct iwl_priv *priv)
{
const struct ieee80211_supported_band *hw = NULL;
struct ieee80211_rate *rate;
int i;
hw = iwl_get_hw_mode(priv, priv->band);
if (!hw) {
IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
return;
}
priv->active_rate = 0;
priv->active_rate_basic = 0;
for (i = 0; i < hw->n_bitrates; i++) {
rate = &(hw->bitrates[i]);
if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
priv->active_rate |= (1 << rate->hw_value);
}
IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
priv->active_rate, priv->active_rate_basic);
/*
* If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
* otherwise set it to the default of all CCK rates and 6, 12, 24 for
* OFDM
*/
if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
priv->staging_rxon.cck_basic_rates =
((priv->active_rate_basic &
IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
else
priv->staging_rxon.cck_basic_rates =
(IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
priv->staging_rxon.ofdm_basic_rates =
((priv->active_rate_basic &
(IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
IWL_FIRST_OFDM_RATE) & 0xFF;
else
priv->staging_rxon.ofdm_basic_rates =
(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
}
void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
rxon->channel = csa->channel;
priv->staging_rxon.channel = csa->channel;
}
EXPORT_SYMBOL(iwl_rx_csa);
#ifdef CONFIG_IWLWIFI_DEBUG
static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
{
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
le32_to_cpu(rxon->filter_flags));
IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
rxon->ofdm_basic_rates);
IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif
/**
* iwl_irq_handle_error - called for HW or SW error interrupt from card
*/
void iwl_irq_handle_error(struct iwl_priv *priv)
{
/* Set the FW error flag -- cleared on iwl_down */
set_bit(STATUS_FW_ERROR, &priv->status);
/* Cancel currently queued command. */
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
#ifdef CONFIG_IWLWIFI_DEBUG
if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
priv->cfg->ops->lib->dump_nic_error_log(priv);
priv->cfg->ops->lib->dump_nic_event_log(priv);
iwl_print_rx_config_cmd(priv);
}
#endif
wake_up_interruptible(&priv->wait_command_queue);
/* Keep the restart process from trying to send host
* commands by clearing the INIT status bit */
clear_bit(STATUS_READY, &priv->status);
if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
"Restarting adapter due to uCode error.\n");
if (priv->cfg->mod_params->restart_fw)
queue_work(priv->workqueue, &priv->restart);
}
}
EXPORT_SYMBOL(iwl_irq_handle_error);
void iwl_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
struct iwl_priv *priv = hw->priv;
__le32 *filter_flags = &priv->staging_rxon.filter_flags;
IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
changed_flags, *total_flags);
if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
*filter_flags |= RXON_FILTER_PROMISC_MSK;
else
*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
}
if (changed_flags & FIF_ALLMULTI) {
if (*total_flags & FIF_ALLMULTI)
*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
else
*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
}
if (changed_flags & FIF_CONTROL) {
if (*total_flags & FIF_CONTROL)
*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
else
*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
}
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
*filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
else
*filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
}
/* We avoid iwl_commit_rxon here to commit the new filter flags
* since mac80211 will call ieee80211_hw_config immediately.
* (mc_list is not supported at this time). Otherwise, we need to
* queue a background iwl_commit_rxon work.
*/
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
}
EXPORT_SYMBOL(iwl_configure_filter);
int iwl_setup_mac(struct iwl_priv *priv)
{
int ret;
struct ieee80211_hw *hw = priv->hw;
hw->rate_control_algorithm = "iwl-agn-rs";
/* Tell mac80211 our characteristics */
hw->flags = IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_NOISE_DBM |
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_SPECTRUM_MGMT;
if (!priv->cfg->broken_powersave)
hw->flags |= IEEE80211_HW_SUPPORTS_PS |
IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC);
hw->wiphy->custom_regulatory = true;
/* Firmware does not support this */
hw->wiphy->disable_beacon_hints = true;
/*
* For now, disable PS by default because it affects
* RX performance significantly.
*/
hw->wiphy->ps_default = false;
hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
/* we create the 802.11 header and a zero-length SSID element */
hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
/* Default value; 4 EDCA QOS priorities */
hw->queues = 4;
hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&priv->bands[IEEE80211_BAND_2GHZ];
if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&priv->bands[IEEE80211_BAND_5GHZ];
ret = ieee80211_register_hw(priv->hw);
if (ret) {
IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
return ret;
}
priv->mac80211_registered = 1;
return 0;
}
EXPORT_SYMBOL(iwl_setup_mac);
int iwl_set_hw_params(struct iwl_priv *priv)
{
priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
if (priv->cfg->mod_params->amsdu_size_8K)
priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
else
priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
if (priv->cfg->mod_params->disable_11n)
priv->cfg->sku &= ~IWL_SKU_N;
/* Device-specific setup */
return priv->cfg->ops->lib->set_hw_params(priv);
}
EXPORT_SYMBOL(iwl_set_hw_params);
int iwl_init_drv(struct iwl_priv *priv)
{
int ret;
priv->ibss_beacon = NULL;
spin_lock_init(&priv->lock);
spin_lock_init(&priv->sta_lock);
spin_lock_init(&priv->hcmd_lock);
INIT_LIST_HEAD(&priv->free_frames);
mutex_init(&priv->mutex);
/* Clear the driver's (not device's) station table */
iwl_clear_stations_table(priv);
priv->data_retry_limit = -1;
priv->ieee_channels = NULL;
priv->ieee_rates = NULL;
priv->band = IEEE80211_BAND_2GHZ;
priv->iw_mode = NL80211_IFTYPE_STATION;
/* Choose which receivers/antennas to use */
if (priv->cfg->ops->hcmd->set_rxon_chain)
priv->cfg->ops->hcmd->set_rxon_chain(priv);
iwl_init_scan_params(priv);
iwl_reset_qos(priv);
priv->qos_data.qos_active = 0;
priv->qos_data.qos_cap.val = 0;
priv->rates_mask = IWL_RATES_MASK;
/* Set the tx_power_user_lmt to the lowest power level
* this value will get overwritten by channel max power avg
* from eeprom */
priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
ret = iwl_init_channel_map(priv);
if (ret) {
IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
goto err;
}
ret = iwlcore_init_geos(priv);
if (ret) {
IWL_ERR(priv, "initializing geos failed: %d\n", ret);
goto err_free_channel_map;
}
iwlcore_init_hw_rates(priv, priv->ieee_rates);
return 0;
err_free_channel_map:
iwl_free_channel_map(priv);
err:
return ret;
}
EXPORT_SYMBOL(iwl_init_drv);
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
int ret = 0;
s8 prev_tx_power = priv->tx_power_user_lmt;
if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
tx_power,
IWL_TX_POWER_TARGET_POWER_MIN);
return -EINVAL;
}
if (tx_power > priv->tx_power_device_lmt) {
IWL_WARN(priv,
"Requested user TXPOWER %d above upper limit %d.\n",
tx_power, priv->tx_power_device_lmt);
return -EINVAL;
}
if (priv->tx_power_user_lmt != tx_power)
force = true;
/* if nic is not up don't send command */
if (iwl_is_ready_rf(priv)) {
priv->tx_power_user_lmt = tx_power;
if (force && priv->cfg->ops->lib->send_tx_power)
ret = priv->cfg->ops->lib->send_tx_power(priv);
else if (!priv->cfg->ops->lib->send_tx_power)
ret = -EOPNOTSUPP;
/*
* if fail to set tx_power, restore the orig. tx power
*/
if (ret)
priv->tx_power_user_lmt = prev_tx_power;
}
/*
* Even this is an async host command, the command
* will always report success from uCode
* So once driver can placing the command into the queue
* successfully, driver can use priv->tx_power_user_lmt
* to reflect the current tx power
*/
return ret;
}
EXPORT_SYMBOL(iwl_set_tx_power);
void iwl_uninit_drv(struct iwl_priv *priv)
{
iwl_calib_free_results(priv);
iwlcore_free_geos(priv);
iwl_free_channel_map(priv);
kfree(priv->scan);
}
EXPORT_SYMBOL(iwl_uninit_drv);
#define ICT_COUNT (PAGE_SIZE/sizeof(u32))
/* Free dram table */
void iwl_free_isr_ict(struct iwl_priv *priv)
{
if (priv->ict_tbl_vir) {
pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
PAGE_SIZE, priv->ict_tbl_vir,
priv->ict_tbl_dma);
priv->ict_tbl_vir = NULL;
}
}
EXPORT_SYMBOL(iwl_free_isr_ict);
/* allocate dram shared table it is a PAGE_SIZE aligned
* also reset all data related to ICT table interrupt.
*/
int iwl_alloc_isr_ict(struct iwl_priv *priv)
{
if (priv->cfg->use_isr_legacy)
return 0;
/* allocate shrared data table */
priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
ICT_COUNT) + PAGE_SIZE,
&priv->ict_tbl_dma);
if (!priv->ict_tbl_vir)
return -ENOMEM;
/* align table to PAGE_SIZE boundry */
priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
(unsigned long long)priv->ict_tbl_dma,
(unsigned long long)priv->aligned_ict_tbl_dma,
(int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
priv->ict_tbl = priv->ict_tbl_vir +
(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
priv->ict_tbl, priv->ict_tbl_vir,
(int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
/* reset table and index to all 0 */
memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
priv->ict_index = 0;
/* add periodic RX interrupt */
priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
return 0;
}
EXPORT_SYMBOL(iwl_alloc_isr_ict);
/* Device is going up inform it about using ICT interrupt table,
* also we need to tell the driver to start using ICT interrupt.
*/
int iwl_reset_ict(struct iwl_priv *priv)
{
u32 val;
unsigned long flags;
if (!priv->ict_tbl_vir)
return 0;
spin_lock_irqsave(&priv->lock, flags);
iwl_disable_interrupts(priv);
memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
val |= CSR_DRAM_INT_TBL_ENABLE;
val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
"aligned dma address %Lx\n",
val, (unsigned long long)priv->aligned_ict_tbl_dma);
iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
priv->use_ict = true;
priv->ict_index = 0;
iwl_write32(priv, CSR_INT, priv->inta_mask);
iwl_enable_interrupts(priv);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
EXPORT_SYMBOL(iwl_reset_ict);
/* Device is going down disable ict interrupt usage */
void iwl_disable_ict(struct iwl_priv *priv)
{
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
priv->use_ict = false;
spin_unlock_irqrestore(&priv->lock, flags);
}
EXPORT_SYMBOL(iwl_disable_ict);
/* interrupt handler using ict table, with this interrupt driver will
* stop using INTA register to get device's interrupt, reading this register
* is expensive, device will write interrupts in ICT dram table, increment
* index then will fire interrupt to driver, driver will OR all ICT table
* entries from current index up to table entry with 0 value. the result is
* the interrupt we need to service, driver will set the entries back to 0 and
* set index.
*/
irqreturn_t iwl_isr_ict(int irq, void *data)
{
struct iwl_priv *priv = data;
u32 inta, inta_mask;
u32 val = 0;
if (!priv)
return IRQ_NONE;
/* dram interrupt table not set yet,
* use legacy interrupt.
*/
if (!priv->use_ict)
return iwl_isr(irq, data);
spin_lock(&priv->lock);
/* Disable (but don't clear!) interrupts here to avoid
* back-to-back ISRs and sporadic interrupts from our NIC.
* If we have something to service, the tasklet will re-enable ints.
* If we *don't* have something, we'll re-enable before leaving here.
*/
inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
/* Ignore interrupt if there's nothing in NIC to service.
* This may be due to IRQ shared with another device,
* or due to sporadic interrupts thrown from our NIC. */
if (!priv->ict_tbl[priv->ict_index]) {
IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
goto none;
}
/* read all entries that not 0 start with ict_index */
while (priv->ict_tbl[priv->ict_index]) {
val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
priv->ict_index,
le32_to_cpu(priv->ict_tbl[priv->ict_index]));
priv->ict_tbl[priv->ict_index] = 0;
priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
ICT_COUNT);
}
/* We should not get this value, just ignore it. */
if (val == 0xffffffff)
val = 0;
inta = (0xff & val) | ((0xff00 & val) << 16);
IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
inta, inta_mask, val);
inta &= priv->inta_mask;
priv->inta |= inta;
/* iwl_irq_tasklet() will service interrupts and re-enable them */
if (likely(inta))
tasklet_schedule(&priv->irq_tasklet);
else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
/* Allow interrupt if was disabled by this handler and
* no tasklet was schedules, We should not enable interrupt,
* tasklet will enable it.
*/
iwl_enable_interrupts(priv);
}
spin_unlock(&priv->lock);
return IRQ_HANDLED;
none:
/* re-enable interrupts here since we don't have anything to service.
* only Re-enable if disabled by irq.
*/
if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
iwl_enable_interrupts(priv);
spin_unlock(&priv->lock);
return IRQ_NONE;
}
EXPORT_SYMBOL(iwl_isr_ict);
static irqreturn_t iwl_isr(int irq, void *data)
{
struct iwl_priv *priv = data;
u32 inta, inta_mask;
#ifdef CONFIG_IWLWIFI_DEBUG
u32 inta_fh;
#endif
if (!priv)
return IRQ_NONE;
spin_lock(&priv->lock);
/* Disable (but don't clear!) interrupts here to avoid
* back-to-back ISRs and sporadic interrupts from our NIC.
* If we have something to service, the tasklet will re-enable ints.
* If we *don't* have something, we'll re-enable before leaving here. */
inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
/* Discover which interrupts are active/pending */
inta = iwl_read32(priv, CSR_INT);
/* Ignore interrupt if there's nothing in NIC to service.
* This may be due to IRQ shared with another device,
* or due to sporadic interrupts thrown from our NIC. */
if (!inta) {
IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
goto none;
}
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
/* Hardware disappeared. It might have already raised
* an interrupt */
IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
goto unplugged;
}
#ifdef CONFIG_IWLWIFI_DEBUG
if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
"fh 0x%08x\n", inta, inta_mask, inta_fh);
}
#endif
priv->inta |= inta;
/* iwl_irq_tasklet() will service interrupts and re-enable them */
if (likely(inta))
tasklet_schedule(&priv->irq_tasklet);
else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
iwl_enable_interrupts(priv);
unplugged:
spin_unlock(&priv->lock);
return IRQ_HANDLED;
none:
/* re-enable interrupts here since we don't have anything to service. */
/* only Re-enable if diabled by irq and no schedules tasklet. */
if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
iwl_enable_interrupts(priv);
spin_unlock(&priv->lock);
return IRQ_NONE;
}
irqreturn_t iwl_isr_legacy(int irq, void *data)
{
struct iwl_priv *priv = data;
u32 inta, inta_mask;
u32 inta_fh;
if (!priv)
return IRQ_NONE;
spin_lock(&priv->lock);
/* Disable (but don't clear!) interrupts here to avoid
* back-to-back ISRs and sporadic interrupts from our NIC.
* If we have something to service, the tasklet will re-enable ints.
* If we *don't* have something, we'll re-enable before leaving here. */
inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
iwl_write32(priv, CSR_INT_MASK, 0x00000000);
/* Discover which interrupts are active/pending */
inta = iwl_read32(priv, CSR_INT);
inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
/* Ignore interrupt if there's nothing in NIC to service.
* This may be due to IRQ shared with another device,
* or due to sporadic interrupts thrown from our NIC. */
if (!inta && !inta_fh) {
IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
goto none;
}
if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
/* Hardware disappeared. It might have already raised
* an interrupt */
IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
goto unplugged;
}
IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
inta, inta_mask, inta_fh);
inta &= ~CSR_INT_BIT_SCD;
/* iwl_irq_tasklet() will service interrupts and re-enable them */
if (likely(inta || inta_fh))
tasklet_schedule(&priv->irq_tasklet);
unplugged:
spin_unlock(&priv->lock);
return IRQ_HANDLED;
none:
/* re-enable interrupts here since we don't have anything to service. */
/* only Re-enable if diabled by irq */
if (test_bit(STATUS_INT_ENABLED, &priv->status))
iwl_enable_interrupts(priv);
spin_unlock(&priv->lock);
return IRQ_NONE;
}
EXPORT_SYMBOL(iwl_isr_legacy);
int iwl_send_bt_config(struct iwl_priv *priv)
{
struct iwl_bt_cmd bt_cmd = {
.flags = 3,
.lead_time = 0xAA,
.max_kill = 1,
.kill_ack_mask = 0,
.kill_cts_mask = 0,
};
return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
sizeof(struct iwl_bt_cmd), &bt_cmd);
}
EXPORT_SYMBOL(iwl_send_bt_config);
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
{
u32 stat_flags = 0;
struct iwl_host_cmd cmd = {
.id = REPLY_STATISTICS_CMD,
.flags = flags,
.len = sizeof(stat_flags),
.data = (u8 *) &stat_flags,
};
return iwl_send_cmd(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_statistics_request);
/**
* iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
* using sample data 100 bytes apart. If these sample points are good,
* it's a pretty good bet that everything between them is good, too.
*/
static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
{
u32 val;
int ret = 0;
u32 errcnt = 0;
u32 i;
IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IWL_DL_IO is set */
iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
i + IWL49_RTC_INST_LOWER_BOUND);
val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
ret = -EIO;
errcnt++;
if (errcnt >= 3)
break;
}
}
return ret;
}
/**
* iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
* looking at all data.
*/
static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
u32 len)
{
u32 val;
u32 save_len = len;
int ret = 0;
u32 errcnt;
IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
IWL49_RTC_INST_LOWER_BOUND);
errcnt = 0;
for (; len > 0; len -= sizeof(u32), image++) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IWL_DL_IO is set */
val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
IWL_ERR(priv, "uCode INST section is invalid at "
"offset 0x%x, is 0x%x, s/b 0x%x\n",
save_len - len, val, le32_to_cpu(*image));
ret = -EIO;
errcnt++;
if (errcnt >= 20)
break;
}
}
if (!errcnt)
IWL_DEBUG_INFO(priv,
"ucode image in INSTRUCTION memory is good\n");
return ret;
}
/**
* iwl_verify_ucode - determine which instruction image is in SRAM,
* and verify its contents
*/
int iwl_verify_ucode(struct iwl_priv *priv)
{
__le32 *image;
u32 len;
int ret;
/* Try bootstrap */
image = (__le32 *)priv->ucode_boot.v_addr;
len = priv->ucode_boot.len;
ret = iwlcore_verify_inst_sparse(priv, image, len);
if (!ret) {
IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
return 0;
}
/* Try initialize */
image = (__le32 *)priv->ucode_init.v_addr;
len = priv->ucode_init.len;
ret = iwlcore_verify_inst_sparse(priv, image, len);
if (!ret) {
IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
return 0;
}
/* Try runtime/protocol */
image = (__le32 *)priv->ucode_code.v_addr;
len = priv->ucode_code.len;
ret = iwlcore_verify_inst_sparse(priv, image, len);
if (!ret) {
IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
return 0;
}
IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
/* Since nothing seems to match, show first several data entries in
* instruction SRAM, so maybe visual inspection will give a clue.
* Selection of bootstrap image (vs. other images) is arbitrary. */
image = (__le32 *)priv->ucode_boot.v_addr;
len = priv->ucode_boot.len;
ret = iwl_verify_inst_full(priv, image, len);
return ret;
}
EXPORT_SYMBOL(iwl_verify_ucode);
void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
struct iwl_ct_kill_config cmd;
struct iwl_ct_kill_throttling_config adv_cmd;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&priv->lock, flags);
iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
spin_unlock_irqrestore(&priv->lock, flags);
priv->thermal_throttle.ct_kill_toggle = false;
switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
case CSR_HW_REV_TYPE_1000:
case CSR_HW_REV_TYPE_6x00:
case CSR_HW_REV_TYPE_6x50:
adv_cmd.critical_temperature_enter =
cpu_to_le32(priv->hw_params.ct_kill_threshold);
adv_cmd.critical_temperature_exit =
cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
sizeof(adv_cmd), &adv_cmd);
if (ret)
IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
else
IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
"succeeded, "
"critical temperature enter is %d,"
"exit is %d\n",
priv->hw_params.ct_kill_threshold,
priv->hw_params.ct_kill_exit_threshold);
break;
default:
cmd.critical_temperature_R =
cpu_to_le32(priv->hw_params.ct_kill_threshold);
ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
sizeof(cmd), &cmd);
if (ret)
IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
else
IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
"succeeded, "
"critical temperature is %d\n",
priv->hw_params.ct_kill_threshold);
break;
}
}
EXPORT_SYMBOL(iwl_rf_kill_ct_config);
/*
* CARD_STATE_CMD
*
* Use: Sets the device's internal card state to enable, disable, or halt
*
* When in the 'enable' state the card operates as normal.
* When in the 'disable' state, the card enters into a low power mode.
* When in the 'halt' state, the card is shut down and must be fully
* restarted to come back on.
*/
int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
{
struct iwl_host_cmd cmd = {
.id = REPLY_CARD_STATE_CMD,
.len = sizeof(u32),
.data = &flags,
.flags = meta_flag,
};
return iwl_send_cmd(priv, &cmd);
}
void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}
EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
"notification for %s:\n", len,
get_cmd_string(pkt->hdr.cmd));
iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
}
EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
void iwl_rx_reply_error(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
"seq 0x%04X ser 0x%08X\n",
le32_to_cpu(pkt->u.err_resp.error_type),
get_cmd_string(pkt->u.err_resp.cmd_id),
pkt->u.err_resp.cmd_id,
le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
le32_to_cpu(pkt->u.err_resp.error_info));
}
EXPORT_SYMBOL(iwl_rx_reply_error);
void iwl_clear_isr_stats(struct iwl_priv *priv)
{
memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
}
int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct iwl_priv *priv = hw->priv;
unsigned long flags;
int q;
IWL_DEBUG_MAC80211(priv, "enter\n");
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
return -EIO;
}
if (queue >= AC_NUM) {
IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
return 0;
}
q = AC_NUM - 1 - queue;
spin_lock_irqsave(&priv->lock, flags);
priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
priv->qos_data.def_qos_parm.ac[q].edca_txop =
cpu_to_le16((params->txop * 32));
priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
priv->qos_data.qos_active = 1;
if (priv->iw_mode == NL80211_IFTYPE_AP)
iwl_activate_qos(priv, 1);
else if (priv->assoc_id && iwl_is_associated(priv))
iwl_activate_qos(priv, 0);
spin_unlock_irqrestore(&priv->lock, flags);
IWL_DEBUG_MAC80211(priv, "leave\n");
return 0;
}
EXPORT_SYMBOL(iwl_mac_conf_tx);
static void iwl_ht_conf(struct iwl_priv *priv,
struct ieee80211_bss_conf *bss_conf)
{
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
struct ieee80211_sta *sta;
IWL_DEBUG_MAC80211(priv, "enter: \n");
if (!ht_conf->is_ht)
return;
ht_conf->ht_protection =
bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
ht_conf->non_GF_STA_present =
!!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
ht_conf->single_chain_sufficient = false;
switch (priv->iw_mode) {
case NL80211_IFTYPE_STATION:
rcu_read_lock();
sta = ieee80211_find_sta(priv->hw, priv->bssid);
if (sta) {
struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
int maxstreams;
maxstreams = (ht_cap->mcs.tx_params &
IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
maxstreams += 1;
if ((ht_cap->mcs.rx_mask[1] == 0) &&
(ht_cap->mcs.rx_mask[2] == 0))
ht_conf->single_chain_sufficient = true;
if (maxstreams <= 1)
ht_conf->single_chain_sufficient = true;
} else {
/*
* If at all, this can only happen through a race
* when the AP disconnects us while we're still
* setting up the connection, in that case mac80211
* will soon tell us about that.
*/
ht_conf->single_chain_sufficient = true;
}
rcu_read_unlock();
break;
case NL80211_IFTYPE_ADHOC:
ht_conf->single_chain_sufficient = true;
break;
default:
break;
}
IWL_DEBUG_MAC80211(priv, "leave\n");
}
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
void iwl_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
struct iwl_priv *priv = hw->priv;
int ret;
IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
if (!iwl_is_alive(priv))
return;
mutex_lock(&priv->mutex);
if (changes & BSS_CHANGED_BEACON &&
priv->iw_mode == NL80211_IFTYPE_AP) {
dev_kfree_skb(priv->ibss_beacon);
priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
}
if (changes & BSS_CHANGED_BEACON_INT) {
priv->beacon_int = bss_conf->beacon_int;
/* TODO: in AP mode, do something to make this take effect */
}
if (changes & BSS_CHANGED_BSSID) {
IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
/*
* If there is currently a HW scan going on in the
* background then we need to cancel it else the RXON
* below/in post_associate will fail.
*/
if (iwl_scan_cancel_timeout(priv, 100)) {
IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
mutex_unlock(&priv->mutex);
return;
}
/* mac80211 only sets assoc when in STATION mode */
if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
bss_conf->assoc) {
memcpy(priv->staging_rxon.bssid_addr,
bss_conf->bssid, ETH_ALEN);
/* currently needed in a few places */
memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
} else {
priv->staging_rxon.filter_flags &=
~RXON_FILTER_ASSOC_MSK;
}
}
/*
* This needs to be after setting the BSSID in case
* mac80211 decides to do both changes at once because
* it will invoke post_associate.
*/
if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
changes & BSS_CHANGED_BEACON) {
struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
if (beacon)
iwl_mac_beacon_update(hw, beacon);
}
if (changes & BSS_CHANGED_ERP_PREAMBLE) {
IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
bss_conf->use_short_preamble);
if (bss_conf->use_short_preamble)
priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
else
priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
}
if (changes & BSS_CHANGED_ERP_CTS_PROT) {
IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
else
priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
}
if (changes & BSS_CHANGED_BASIC_RATES) {
/* XXX use this information
*
* To do that, remove code from iwl_set_rate() and put something
* like this here:
*
if (A-band)
priv->staging_rxon.ofdm_basic_rates =
bss_conf->basic_rates;
else
priv->staging_rxon.ofdm_basic_rates =
bss_conf->basic_rates >> 4;
priv->staging_rxon.cck_basic_rates =
bss_conf->basic_rates & 0xF;
*/
}
if (changes & BSS_CHANGED_HT) {
iwl_ht_conf(priv, bss_conf);
if (priv->cfg->ops->hcmd->set_rxon_chain)
priv->cfg->ops->hcmd->set_rxon_chain(priv);
}
if (changes & BSS_CHANGED_ASSOC) {
IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
if (bss_conf->assoc) {
priv->assoc_id = bss_conf->aid;
priv->beacon_int = bss_conf->beacon_int;
priv->timestamp = bss_conf->timestamp;
priv->assoc_capability = bss_conf->assoc_capability;
/*
* We have just associated, don't start scan too early
* leave time for EAPOL exchange to complete.
*
* XXX: do this in mac80211
*/
priv->next_scan_jiffies = jiffies +
IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
if (!iwl_is_rfkill(priv))
priv->cfg->ops->lib->post_associate(priv);
} else
priv->assoc_id = 0;
}
if (changes && iwl_is_associated(priv) && priv->assoc_id) {
IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
changes);
ret = iwl_send_rxon_assoc(priv);
if (!ret) {
/* Sync active_rxon with latest change. */
memcpy((void *)&priv->active_rxon,
&priv->staging_rxon,
sizeof(struct iwl_rxon_cmd));
}
}
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");
}
EXPORT_SYMBOL(iwl_bss_info_changed);
int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct iwl_priv *priv = hw->priv;
unsigned long flags;
__le64 timestamp;
IWL_DEBUG_MAC80211(priv, "enter\n");
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
return -EIO;
}
if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
return -EIO;
}
spin_lock_irqsave(&priv->lock, flags);
if (priv->ibss_beacon)
dev_kfree_skb(priv->ibss_beacon);
priv->ibss_beacon = skb;
priv->assoc_id = 0;
timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
priv->timestamp = le64_to_cpu(timestamp);
IWL_DEBUG_MAC80211(priv, "leave\n");
spin_unlock_irqrestore(&priv->lock, flags);
iwl_reset_qos(priv);
priv->cfg->ops->lib->post_associate(priv);
return 0;
}
EXPORT_SYMBOL(iwl_mac_beacon_update);
int iwl_set_mode(struct iwl_priv *priv, int mode)
{
if (mode == NL80211_IFTYPE_ADHOC) {
const struct iwl_channel_info *ch_info;
ch_info = iwl_get_channel_info(priv,
priv->band,
le16_to_cpu(priv->staging_rxon.channel));
if (!ch_info || !is_channel_ibss(ch_info)) {
IWL_ERR(priv, "channel %d not IBSS channel\n",
le16_to_cpu(priv->staging_rxon.channel));
return -EINVAL;
}
}
iwl_connection_init_rx_config(priv, mode);
if (priv->cfg->ops->hcmd->set_rxon_chain)
priv->cfg->ops->hcmd->set_rxon_chain(priv);
memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
iwl_clear_stations_table(priv);
/* dont commit rxon if rf-kill is on*/
if (!iwl_is_ready_rf(priv))
return -EAGAIN;
iwlcore_commit_rxon(priv);
return 0;
}
EXPORT_SYMBOL(iwl_set_mode);
int iwl_mac_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct iwl_priv *priv = hw->priv;
unsigned long flags;
IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
if (priv->vif) {
IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
return -EOPNOTSUPP;
}
spin_lock_irqsave(&priv->lock, flags);
priv->vif = conf->vif;
priv->iw_mode = conf->type;
spin_unlock_irqrestore(&priv->lock, flags);
mutex_lock(&priv->mutex);
if (conf->mac_addr) {
IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
}
if (iwl_set_mode(priv, conf->type) == -EAGAIN)
/* we are not ready, will run again when ready */
set_bit(STATUS_MODE_PENDING, &priv->status);
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");
return 0;
}
EXPORT_SYMBOL(iwl_mac_add_interface);
void iwl_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct iwl_priv *priv = hw->priv;
IWL_DEBUG_MAC80211(priv, "enter\n");
mutex_lock(&priv->mutex);
if (iwl_is_ready_rf(priv)) {
iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwlcore_commit_rxon(priv);
}
if (priv->vif == conf->vif) {
priv->vif = NULL;
memset(priv->bssid, 0, ETH_ALEN);
}
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");
}
EXPORT_SYMBOL(iwl_mac_remove_interface);
/**
* iwl_mac_config - mac80211 config callback
*
* We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
* be set inappropriately and the driver currently sets the hardware up to
* use it whenever needed.
*/
int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
{
struct iwl_priv *priv = hw->priv;
const struct iwl_channel_info *ch_info;
struct ieee80211_conf *conf = &hw->conf;
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
unsigned long flags = 0;
int ret = 0;
u16 ch;
int scan_active = 0;
mutex_lock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
conf->channel->hw_value, changed);
if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
test_bit(STATUS_SCANNING, &priv->status))) {
scan_active = 1;
IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
}
/* during scanning mac80211 will delay channel setting until
* scan finish with changed = 0
*/
if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
if (scan_active)
goto set_ch_out;
ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
if (!is_channel_valid(ch_info)) {
IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
ret = -EINVAL;
goto set_ch_out;
}
if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
!is_channel_ibss(ch_info)) {
IWL_ERR(priv, "channel %d in band %d not "
"IBSS channel\n",
conf->channel->hw_value, conf->channel->band);
ret = -EINVAL;
goto set_ch_out;
}
spin_lock_irqsave(&priv->lock, flags);
/* Configure HT40 channels */
ht_conf->is_ht = conf_is_ht(conf);
if (ht_conf->is_ht) {
if (conf_is_ht40_minus(conf)) {
ht_conf->extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_BELOW;
ht_conf->is_40mhz = true;
} else if (conf_is_ht40_plus(conf)) {
ht_conf->extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
ht_conf->is_40mhz = true;
} else {
ht_conf->extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_NONE;
ht_conf->is_40mhz = false;
}
} else
ht_conf->is_40mhz = false;
/* Default to no protection. Protection mode will later be set
* from BSS config in iwl_ht_conf */
ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
/* if we are switching from ht to 2.4 clear flags
* from any ht related info since 2.4 does not
* support ht */
if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
priv->staging_rxon.flags = 0;
iwl_set_rxon_channel(priv, conf->channel);
iwl_set_flags_for_band(priv, conf->channel->band);
spin_unlock_irqrestore(&priv->lock, flags);
set_ch_out:
/* The list of supported rates and rate mask can be different
* for each band; since the band may have changed, reset
* the rate mask to what mac80211 lists */
iwl_set_rate(priv);
}
if (changed & (IEEE80211_CONF_CHANGE_PS |
IEEE80211_CONF_CHANGE_IDLE)) {
ret = iwl_power_update_mode(priv, false);
if (ret)
IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
priv->tx_power_user_lmt, conf->power_level);
iwl_set_tx_power(priv, conf->power_level, false);
}
/* call to ensure that 4965 rx_chain is set properly in monitor mode */
if (priv->cfg->ops->hcmd->set_rxon_chain)
priv->cfg->ops->hcmd->set_rxon_chain(priv);
if (!iwl_is_ready(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
goto out;
}
if (scan_active)
goto out;
if (memcmp(&priv->active_rxon,
&priv->staging_rxon, sizeof(priv->staging_rxon)))
iwlcore_commit_rxon(priv);
else
IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
out:
IWL_DEBUG_MAC80211(priv, "leave\n");
mutex_unlock(&priv->mutex);
return ret;
}
EXPORT_SYMBOL(iwl_mac_config);
int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
struct ieee80211_tx_queue_stats *stats)
{
struct iwl_priv *priv = hw->priv;
int i, avail;
struct iwl_tx_queue *txq;
struct iwl_queue *q;
unsigned long flags;
IWL_DEBUG_MAC80211(priv, "enter\n");
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
return -EIO;
}
spin_lock_irqsave(&priv->lock, flags);
for (i = 0; i < AC_NUM; i++) {
txq = &priv->txq[i];
q = &txq->q;
avail = iwl_queue_space(q);
stats[i].len = q->n_window - avail;
stats[i].limit = q->n_window - q->high_mark;
stats[i].count = q->n_window;
}
spin_unlock_irqrestore(&priv->lock, flags);
IWL_DEBUG_MAC80211(priv, "leave\n");
return 0;
}
EXPORT_SYMBOL(iwl_mac_get_tx_stats);
void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
{
struct iwl_priv *priv = hw->priv;
unsigned long flags;
mutex_lock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "enter\n");
spin_lock_irqsave(&priv->lock, flags);
memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
spin_unlock_irqrestore(&priv->lock, flags);
iwl_reset_qos(priv);
spin_lock_irqsave(&priv->lock, flags);
priv->assoc_id = 0;
priv->assoc_capability = 0;
priv->assoc_station_added = 0;
/* new association get rid of ibss beacon skb */
if (priv->ibss_beacon)
dev_kfree_skb(priv->ibss_beacon);
priv->ibss_beacon = NULL;
priv->beacon_int = priv->vif->bss_conf.beacon_int;
priv->timestamp = 0;
if ((priv->iw_mode == NL80211_IFTYPE_STATION))
priv->beacon_int = 0;
spin_unlock_irqrestore(&priv->lock, flags);
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
mutex_unlock(&priv->mutex);
return;
}
/* we are restarting association process
* clear RXON_FILTER_ASSOC_MSK bit
*/
if (priv->iw_mode != NL80211_IFTYPE_AP) {
iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwlcore_commit_rxon(priv);
}
if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
mutex_unlock(&priv->mutex);
return;
}
iwl_set_rate(priv);
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");
}
EXPORT_SYMBOL(iwl_mac_reset_tsf);
#ifdef CONFIG_IWLWIFI_DEBUGFS
#define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
void iwl_reset_traffic_log(struct iwl_priv *priv)
{
priv->tx_traffic_idx = 0;
priv->rx_traffic_idx = 0;
if (priv->tx_traffic)
memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
if (priv->rx_traffic)
memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
}
int iwl_alloc_traffic_mem(struct iwl_priv *priv)
{
u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
if (iwl_debug_level & IWL_DL_TX) {
if (!priv->tx_traffic) {
priv->tx_traffic =
kzalloc(traffic_size, GFP_KERNEL);
if (!priv->tx_traffic)
return -ENOMEM;
}
}
if (iwl_debug_level & IWL_DL_RX) {
if (!priv->rx_traffic) {
priv->rx_traffic =
kzalloc(traffic_size, GFP_KERNEL);
if (!priv->rx_traffic)
return -ENOMEM;
}
}
iwl_reset_traffic_log(priv);
return 0;
}
EXPORT_SYMBOL(iwl_alloc_traffic_mem);
void iwl_free_traffic_mem(struct iwl_priv *priv)
{
kfree(priv->tx_traffic);
priv->tx_traffic = NULL;
kfree(priv->rx_traffic);
priv->rx_traffic = NULL;
}
EXPORT_SYMBOL(iwl_free_traffic_mem);
void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
u16 length, struct ieee80211_hdr *header)
{
__le16 fc;
u16 len;
if (likely(!(iwl_debug_level & IWL_DL_TX)))
return;
if (!priv->tx_traffic)
return;
fc = header->frame_control;
if (ieee80211_is_data(fc)) {
len = (length > IWL_TRAFFIC_ENTRY_SIZE)
? IWL_TRAFFIC_ENTRY_SIZE : length;
memcpy((priv->tx_traffic +
(priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
header, len);
priv->tx_traffic_idx =
(priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
}
}
EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
u16 length, struct ieee80211_hdr *header)
{
__le16 fc;
u16 len;
if (likely(!(iwl_debug_level & IWL_DL_RX)))
return;
if (!priv->rx_traffic)
return;
fc = header->frame_control;
if (ieee80211_is_data(fc)) {
len = (length > IWL_TRAFFIC_ENTRY_SIZE)
? IWL_TRAFFIC_ENTRY_SIZE : length;
memcpy((priv->rx_traffic +
(priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
header, len);
priv->rx_traffic_idx =
(priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
}
}
EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
const char *get_mgmt_string(int cmd)
{
switch (cmd) {
IWL_CMD(MANAGEMENT_ASSOC_REQ);
IWL_CMD(MANAGEMENT_ASSOC_RESP);
IWL_CMD(MANAGEMENT_REASSOC_REQ);
IWL_CMD(MANAGEMENT_REASSOC_RESP);
IWL_CMD(MANAGEMENT_PROBE_REQ);
IWL_CMD(MANAGEMENT_PROBE_RESP);
IWL_CMD(MANAGEMENT_BEACON);
IWL_CMD(MANAGEMENT_ATIM);
IWL_CMD(MANAGEMENT_DISASSOC);
IWL_CMD(MANAGEMENT_AUTH);
IWL_CMD(MANAGEMENT_DEAUTH);
IWL_CMD(MANAGEMENT_ACTION);
default:
return "UNKNOWN";
}
}
const char *get_ctrl_string(int cmd)
{
switch (cmd) {
IWL_CMD(CONTROL_BACK_REQ);
IWL_CMD(CONTROL_BACK);
IWL_CMD(CONTROL_PSPOLL);
IWL_CMD(CONTROL_RTS);
IWL_CMD(CONTROL_CTS);
IWL_CMD(CONTROL_ACK);
IWL_CMD(CONTROL_CFEND);
IWL_CMD(CONTROL_CFENDACK);
default:
return "UNKNOWN";
}
}
void iwl_clear_tx_stats(struct iwl_priv *priv)
{
memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
}
void iwl_clear_rx_stats(struct iwl_priv *priv)
{
memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
}
/*
* if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
* record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
* Use debugFs to display the rx/rx_statistics
* if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
* information will be recorded, but DATA pkt still will be recorded
* for the reason of iwl_led.c need to control the led blinking based on
* number of tx and rx data.
*
*/
void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
{
struct traffic_stats *stats;
if (is_tx)
stats = &priv->tx_stats;
else
stats = &priv->rx_stats;
if (ieee80211_is_mgmt(fc)) {
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
stats->mgmt[MANAGEMENT_PROBE_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
stats->mgmt[MANAGEMENT_PROBE_RESP]++;
break;
case cpu_to_le16(IEEE80211_STYPE_BEACON):
stats->mgmt[MANAGEMENT_BEACON]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ATIM):
stats->mgmt[MANAGEMENT_ATIM]++;
break;
case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
stats->mgmt[MANAGEMENT_DISASSOC]++;
break;
case cpu_to_le16(IEEE80211_STYPE_AUTH):
stats->mgmt[MANAGEMENT_AUTH]++;
break;
case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
stats->mgmt[MANAGEMENT_DEAUTH]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ACTION):
stats->mgmt[MANAGEMENT_ACTION]++;
break;
}
} else if (ieee80211_is_ctl(fc)) {
switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
stats->ctrl[CONTROL_BACK_REQ]++;
break;
case cpu_to_le16(IEEE80211_STYPE_BACK):
stats->ctrl[CONTROL_BACK]++;
break;
case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
stats->ctrl[CONTROL_PSPOLL]++;
break;
case cpu_to_le16(IEEE80211_STYPE_RTS):
stats->ctrl[CONTROL_RTS]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CTS):
stats->ctrl[CONTROL_CTS]++;
break;
case cpu_to_le16(IEEE80211_STYPE_ACK):
stats->ctrl[CONTROL_ACK]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CFEND):
stats->ctrl[CONTROL_CFEND]++;
break;
case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
stats->ctrl[CONTROL_CFENDACK]++;
break;
}
} else {
/* data */
stats->data_cnt++;
stats->data_bytes += len;
}
}
EXPORT_SYMBOL(iwl_update_stats);
#endif
#ifdef CONFIG_PM
int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct iwl_priv *priv = pci_get_drvdata(pdev);
/*
* This function is called when system goes into suspend state
* mac80211 will call iwl_mac_stop() from the mac80211 suspend function
* first but since iwl_mac_stop() has no knowledge of who the caller is,
* it will not call apm_ops.stop() to stop the DMA operation.
* Calling apm_ops.stop here to make sure we stop the DMA.
*/
priv->cfg->ops->lib->apm_ops.stop(priv);
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
EXPORT_SYMBOL(iwl_pci_suspend);
int iwl_pci_resume(struct pci_dev *pdev)
{
struct iwl_priv *priv = pci_get_drvdata(pdev);
int ret;
pci_set_power_state(pdev, PCI_D0);
ret = pci_enable_device(pdev);
if (ret)
return ret;
pci_restore_state(pdev);
iwl_enable_interrupts(priv);
return 0;
}
EXPORT_SYMBOL(iwl_pci_resume);
#endif /* CONFIG_PM */
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