iwl-core.c 87.6 KB
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/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
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 *
 * 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:
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 *  Intel Linux Wireless <ilw@linux.intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
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#include <linux/etherdevice.h>
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#include <linux/sched.h>
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#include <net/mac80211.h>
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#include "iwl-eeprom.h"
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#include "iwl-dev.h" /* FIXME: remove */
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#include "iwl-debug.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-power.h"
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#include "iwl-sta.h"
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#include "iwl-helpers.h"
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MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
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MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
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MODULE_LICENSE("GPL");
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/*
 * set bt_coex_active to true, uCode will do kill/defer
 * every time the priority line is asserted (BT is sending signals on the
 * priority line in the PCIx).
 * set bt_coex_active to false, uCode will ignore the BT activity and
 * perform the normal operation
 *
 * User might experience transmit issue on some platform due to WiFi/BT
 * co-exist problem. The possible behaviors are:
 *   Able to scan and finding all the available AP
 *   Not able to associate with any AP
 * On those platforms, WiFi communication can be restored by set
 * "bt_coex_active" module parameter to "false"
 *
 * default: bt_coex_active = true (BT_COEX_ENABLE)
 */
static bool bt_coex_active = true;
module_param(bt_coex_active, bool, S_IRUGO);
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist\n");

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static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
	{COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
	 0, COEX_UNASSOC_IDLE_FLAGS},
	{COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
	 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
	{COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
	 0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
	{COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
	 0, COEX_CALIBRATION_FLAGS},
	{COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
	 0, COEX_PERIODIC_CALIBRATION_FLAGS},
	{COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
	 0, COEX_CONNECTION_ESTAB_FLAGS},
	{COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
	 0, COEX_ASSOCIATED_IDLE_FLAGS},
	{COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
	 0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
	{COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
	 0, COEX_ASSOC_AUTO_SCAN_FLAGS},
	{COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
	 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
	{COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
	{COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
	{COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
	 0, COEX_STAND_ALONE_DEBUG_FLAGS},
	{COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
	 0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
	{COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
	{COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
};

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#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 }

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u32 iwl_debug_level;
EXPORT_SYMBOL(iwl_debug_level);

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/*
 * 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
 *
 */
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const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
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	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) */
};
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EXPORT_SYMBOL(iwl_rates);
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/**
 * translate ucode response to mac80211 tx status control values
 */
void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
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				  struct ieee80211_tx_info *info)
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{
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	struct ieee80211_tx_rate *r = &info->control.rates[0];
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	info->antenna_sel_tx =
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		((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
	if (rate_n_flags & RATE_MCS_HT_MSK)
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		r->flags |= IEEE80211_TX_RC_MCS;
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	if (rate_n_flags & RATE_MCS_GF_MSK)
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		r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
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	if (rate_n_flags & RATE_MCS_HT40_MSK)
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		r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
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	if (rate_n_flags & RATE_MCS_DUP_MSK)
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		r->flags |= IEEE80211_TX_RC_DUP_DATA;
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	if (rate_n_flags & RATE_MCS_SGI_MSK)
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		r->flags |= IEEE80211_TX_RC_SHORT_GI;
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	r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
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}
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);

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		if (idx >= IWL_RATE_MIMO3_6M_PLCP)
			idx = idx - IWL_RATE_MIMO3_6M_PLCP;
		else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
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			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);

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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;
}

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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;
}
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EXPORT_SYMBOL(iwl_toggle_tx_ant);
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const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
EXPORT_SYMBOL(iwl_bcast_addr);


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/* 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) {
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		printk(KERN_ERR "%s: Can not allocate network device\n",
		       cfg->name);
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		goto out;
	}

	priv = hw->priv;
	priv->hw = hw;

out:
	return hw;
}
EXPORT_SYMBOL(iwl_alloc_all);

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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);

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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);
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	priv->cfg->ops->lib->apm_ops.init(priv);
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	/* Set interrupt coalescing calibration timer to default (512 usecs) */
	iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
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	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) {
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			IWL_ERR(priv, "Unable to initialize Rx queue\n");
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			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);

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/*
 * 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);

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/*
 * 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
 */
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void iwl_reset_qos(struct iwl_priv *priv)
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{
	u16 cw_min = 15;
	u16 cw_max = 1023;
	u8 aifs = 2;
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	bool is_legacy = false;
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	unsigned long flags;
	int i;

	spin_lock_irqsave(&priv->lock, flags);
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	/* 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;
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	/* 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)) {
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		cw_min = 31;
		is_legacy = 1;
	}

	if (priv->qos_data.qos_active)
		aifs = 3;

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	/* AC_BE */
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	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) {
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		/* AC_BK */
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		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;

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		/* AC_VI */
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		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 =
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			cpu_to_le16(cw_min);
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		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;

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		/* AC_VO */
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		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 =
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			cpu_to_le16((cw_min + 1) / 2 - 1);
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		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;
		}
	}
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	IWL_DEBUG_QOS(priv, "set QoS to default \n");
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	spin_unlock_irqrestore(&priv->lock, flags);
}
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EXPORT_SYMBOL(iwl_reset_qos);

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#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
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static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
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			      struct ieee80211_sta_ht_cap *ht_info,
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			      enum ieee80211_band band)
{
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	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;

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	ht_info->cap = 0;
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	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
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	ht_info->ht_supported = true;
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	if (priv->cfg->ht_greenfield_support)
		ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
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	ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
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	max_bit_rate = MAX_BIT_RATE_20_MHZ;
472
	if (priv->hw_params.ht40_channel & BIT(band)) {
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		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;
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		max_bit_rate = MAX_BIT_RATE_40_MHZ;
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	}

	if (priv->cfg->mod_params->amsdu_size_8K)
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		ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
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	ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
	ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;

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	ht_info->mcs.rx_mask[0] = 0xFF;
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	if (rx_chains_num >= 2)
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		ht_info->mcs.rx_mask[1] = 0xFF;
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	if (rx_chains_num >= 3)
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		ht_info->mcs.rx_mask[2] = 0xFF;
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	/* Highest supported Rx data rate */
	max_bit_rate *= rx_chains_num;
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	WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
	ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
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	/* Tx MCS capabilities */
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	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
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	if (tx_chains_num != rx_chains_num) {
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		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);
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	}
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}

/**
 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 */
508
int iwlcore_init_geos(struct iwl_priv *priv)
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{
	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) {
519
		IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
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		set_bit(STATUS_GEO_CONFIGURED, &priv->status);
		return 0;
	}

	channels = kzalloc(sizeof(struct ieee80211_channel) *
			   priv->channel_count, GFP_KERNEL);
	if (!channels)
		return -ENOMEM;

529
	rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
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			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];
541
	sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
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543
	if (priv->cfg->sku & IWL_SKU_N)
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		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
545
					 IEEE80211_BAND_5GHZ);
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	sband = &priv->bands[IEEE80211_BAND_2GHZ];
	sband->channels = channels;
	/* OFDM & CCK */
	sband->bitrates = rates;
551
	sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
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553
	if (priv->cfg->sku & IWL_SKU_N)
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		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
555
					 IEEE80211_BAND_2GHZ);
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	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;

590
			geo_ch->flags |= ch->ht40_extension_channel;
591

592 593
			if (ch->max_power_avg > priv->tx_power_device_lmt)
				priv->tx_power_device_lmt = ch->max_power_avg;
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		} else {
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
		}

598
		IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
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				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) {
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		IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
			"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
610 611
			   priv->pci_dev->device,
			   priv->pci_dev->subsystem_device);
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		priv->cfg->sku &= ~IWL_SKU_A;
	}

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	IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
616 617
		   priv->bands[IEEE80211_BAND_2GHZ].n_channels,
		   priv->bands[IEEE80211_BAND_5GHZ].n_channels);
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	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}
623
EXPORT_SYMBOL(iwlcore_init_geos);
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/*
 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 */
628
void iwlcore_free_geos(struct iwl_priv *priv)
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{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
634
EXPORT_SYMBOL(iwlcore_free_geos);
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/*
 *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
 *  function.
 */
void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
				__le32 *tx_flags)
{
	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
		*tx_flags |= TX_CMD_FLG_RTS_MSK;
		*tx_flags &= ~TX_CMD_FLG_CTS_MSK;
	} else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
		*tx_flags &= ~TX_CMD_FLG_RTS_MSK;
		*tx_flags |= TX_CMD_FLG_CTS_MSK;
	}
}
EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);

653
static bool is_single_rx_stream(struct iwl_priv *priv)
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{
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	return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
656
	       priv->current_ht_config.single_chain_sufficient;
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}
658

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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;

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	if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
670
		return !(ch_info->ht40_extension_channel &
671
					IEEE80211_CHAN_NO_HT40PLUS);
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	else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
673
		return !(ch_info->ht40_extension_channel &
674
					IEEE80211_CHAN_NO_HT40MINUS);
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	return 0;
}

679
u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
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			 struct ieee80211_sta_ht_cap *sta_ht_inf)
681
{
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	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
683

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	if (!ht_conf->is_ht || !ht_conf->is_40mhz)
685 686
		return 0;

687 688 689
	/* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
	 * the bit will not set if it is pure 40MHz case
	 */
690
	if (sta_ht_inf) {
691
		if (!sta_ht_inf->ht_supported)
692 693
			return 0;
	}
694 695 696 697
#ifdef CONFIG_IWLWIFI_DEBUG
	if (priv->disable_ht40)
		return 0;
#endif
698 699
	return iwl_is_channel_extension(priv, priv->band,
			le16_to_cpu(priv->staging_rxon.channel),
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			ht_conf->extension_chan_offset);
701
}
702
EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
703

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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);

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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) ||
875 876
	    (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
	    (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)
{
900 901 902 903
	/*
	 * Assign the lowest rate -- should really get this from
	 * the beacon skb from mac80211.
	 */
904 905 906 907 908 909 910
	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);

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Johannes Berg 已提交
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void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
912
{
G
Gregory Greenman 已提交
913
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
914

J
Johannes Berg 已提交
915
	if (!ht_conf->is_ht) {
916
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
917
			RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
918
			RXON_FLG_HT40_PROT_MSK |
919
			RXON_FLG_HT_PROT_MSK);
920
		return;
921
	}
922

923 924 925
	/* FIXME: if the definition of ht_protection changed, the "translation"
	 * will be needed for rxon->flags
	 */
J
Johannes Berg 已提交
926
	rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
927 928

	/* Set up channel bandwidth:
929
	 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
930 931 932
	/* clear the HT channel mode before set the mode */
	rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
			 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
933 934
	if (iwl_is_ht40_tx_allowed(priv, NULL)) {
		/* pure ht40 */
J
Johannes Berg 已提交
935
		if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
936
			rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
937
			/* Note: control channel is opposite of extension channel */
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Johannes Berg 已提交
938
			switch (ht_conf->extension_chan_offset) {
939 940 941 942 943 944 945 946
			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 {
947
			/* Note: control channel is opposite of extension channel */
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948
			switch (ht_conf->extension_chan_offset) {
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
			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;
966 967
	}

968 969
	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);
970

971
	IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
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972
			"extension channel offset 0x%x\n",
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973 974
			le32_to_cpu(rxon->flags), ht_conf->ht_protection,
			ht_conf->extension_chan_offset);
975 976 977 978
	return;
}
EXPORT_SYMBOL(iwl_set_rxon_ht);

979 980 981 982 983
#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

984 985 986 987 988 989 990
/*
 * 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.
 *
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991 992 993
 * MIMO (dual stream) requires at least 2, but works better with 3.
 * This does not determine *which* chains to use, just how many.
 */
994
static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
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Ron Rindjunsky 已提交
995 996
{
	/* # of Rx chains to use when expecting MIMO. */
997
	if (is_single_rx_stream(priv))
998
		return IWL_NUM_RX_CHAINS_SINGLE;
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999
	else
1000
		return IWL_NUM_RX_CHAINS_MULTIPLE;
1001
}
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1002

1003
/*
1004 1005
 * When we are in power saving mode, unless device support spatial
 * multiplexing power save, use the active count for rx chain count.
1006
 */
1007 1008
static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
{
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Johannes Berg 已提交
1009 1010 1011 1012 1013 1014 1015
	/* # Rx chains when idling, depending on SMPS mode */
	switch (priv->current_ht_config.smps) {
	case IEEE80211_SMPS_STATIC:
	case IEEE80211_SMPS_DYNAMIC:
		return IWL_NUM_IDLE_CHAINS_SINGLE;
	case IEEE80211_SMPS_OFF:
		return active_cnt;
1016
	default:
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1017 1018 1019
		WARN(1, "invalid SMPS mode %d",
		     priv->current_ht_config.smps);
		return active_cnt;
1020
	}
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1021 1022
}

1023 1024 1025 1026 1027 1028 1029
/* 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;
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	res += (chain_bitmap & BIT(3)) >> 3;
1031 1032 1033
	return res;
}

1034 1035 1036 1037 1038 1039 1040
/**
 * 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).
 */
1041
bool iwl_is_monitor_mode(struct iwl_priv *priv)
1042 1043 1044
{
	return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
}
1045
EXPORT_SYMBOL(iwl_is_monitor_mode);
1046

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Ron Rindjunsky 已提交
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/**
 * 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)
{
1055 1056
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1057 1058
	u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
	u32 active_chains;
1059
	u16 rx_chain;
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1060 1061 1062 1063 1064

	/* 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. */
1065 1066 1067 1068 1069 1070
	 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;
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1071 1072

	/* How many receivers should we use? */
1073 1074 1075 1076
	active_rx_cnt = iwl_get_active_rx_chain_count(priv);
	idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);


1077 1078 1079 1080 1081 1082 1083 1084 1085
	/* 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;
1086 1087 1088 1089

	rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
	rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;

1090 1091 1092 1093 1094 1095 1096
	/* 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)) {
1097 1098 1099 1100
		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;
1101 1102
	}

1103 1104
	priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);

1105
	if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
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Ron Rindjunsky 已提交
1106 1107 1108 1109
		priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
	else
		priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;

1110
	IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1111 1112 1113 1114 1115
			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);
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Ron Rindjunsky 已提交
1116 1117
}
EXPORT_SYMBOL(iwl_set_rxon_chain);
1118 1119

/**
1120
 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1121 1122 1123 1124 1125 1126 1127 1128
 * @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
 */
1129
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1130
{
1131 1132 1133
	enum ieee80211_band band = ch->band;
	u16 channel = ieee80211_frequency_to_channel(ch->center_freq);

1134
	if (!iwl_get_channel_info(priv, band, channel)) {
1135
		IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151
			       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;

1152
	IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1153 1154 1155

	return 0;
}
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EXPORT_SYMBOL(iwl_set_rxon_channel);
1157

1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
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];

	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;

1238 1239 1240
	/* clear both MIX and PURE40 mode flag */
	priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
					RXON_FLG_CHANNEL_MODE_PURE_40);
1241 1242 1243 1244
	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;
1245
	priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1246 1247 1248
}
EXPORT_SYMBOL(iwl_connection_init_rx_config);

1249
static void iwl_set_rate(struct iwl_priv *priv)
1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
{
	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;

	for (i = 0; i < hw->n_bitrates; i++) {
		rate = &(hw->bitrates[i]);
1265
		if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1266 1267 1268
			priv->active_rate |= (1 << rate->hw_value);
	}

1269
	IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
1270

1271 1272 1273 1274 1275
	priv->staging_rxon.cck_basic_rates =
	    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	priv->staging_rxon.ofdm_basic_rates =
	   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1276 1277 1278 1279
}

void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
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Zhu Yi 已提交
1280
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1281 1282
	struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1283

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Wey-Yi Guy 已提交
1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296
	if (priv->switch_rxon.switch_in_progress) {
		if (!le32_to_cpu(csa->status) &&
		    (csa->channel == priv->switch_rxon.channel)) {
			rxon->channel = csa->channel;
			priv->staging_rxon.channel = csa->channel;
			IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
			      le16_to_cpu(csa->channel));
		} else
			IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
			      le16_to_cpu(csa->channel));

		priv->switch_rxon.switch_in_progress = false;
	}
1297 1298 1299 1300
}
EXPORT_SYMBOL(iwl_rx_csa);

#ifdef CONFIG_IWLWIFI_DEBUG
1301
void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1302 1303 1304
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

1305
	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1306
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1307 1308 1309
	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",
1310
			le32_to_cpu(rxon->filter_flags));
1311 1312
	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1313
			rxon->ofdm_basic_rates);
1314 1315 1316 1317
	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));
1318
}
1319
EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1320
#endif
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
/**
 * 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);

1332
	priv->cfg->ops->lib->dump_nic_error_log(priv);
1333 1334
	if (priv->cfg->ops->lib->dump_csr)
		priv->cfg->ops->lib->dump_csr(priv);
1335 1336
	if (priv->cfg->ops->lib->dump_fh)
		priv->cfg->ops->lib->dump_fh(priv, NULL, false);
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Wey-Yi Guy 已提交
1337
	priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
1338
#ifdef CONFIG_IWLWIFI_DEBUG
1339
	if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
		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)) {
1350
		IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1351 1352 1353 1354 1355 1356 1357 1358
			  "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);

1359 1360
int iwl_apm_stop_master(struct iwl_priv *priv)
{
1361
	int ret = 0;
1362

1363
	/* stop device's busmaster DMA activity */
1364 1365
	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);

1366
	ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1367
			CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1368 1369
	if (ret)
		IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1370 1371 1372

	IWL_DEBUG_INFO(priv, "stop master\n");

1373
	return ret;
1374 1375 1376 1377 1378
}
EXPORT_SYMBOL(iwl_apm_stop_master);

void iwl_apm_stop(struct iwl_priv *priv)
{
1379 1380
	IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");

1381
	/* Stop device's DMA activity */
1382 1383
	iwl_apm_stop_master(priv);

1384
	/* Reset the entire device */
1385 1386 1387
	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);

	udelay(10);
1388 1389 1390 1391 1392

	/*
	 * Clear "initialization complete" bit to move adapter from
	 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
	 */
1393 1394 1395 1396
	iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
}
EXPORT_SYMBOL(iwl_apm_stop);

1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437

/*
 * Start up NIC's basic functionality after it has been reset
 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
 * NOTE:  This does not load uCode nor start the embedded processor
 */
int iwl_apm_init(struct iwl_priv *priv)
{
	int ret = 0;
	u16 lctl;

	IWL_DEBUG_INFO(priv, "Init card's basic functions\n");

	/*
	 * Use "set_bit" below rather than "write", to preserve any hardware
	 * bits already set by default after reset.
	 */

	/* Disable L0S exit timer (platform NMI Work/Around) */
	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
			  CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);

	/*
	 * Disable L0s without affecting L1;
	 *  don't wait for ICH L0s (ICH bug W/A)
	 */
	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
			  CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);

	/* Set FH wait threshold to maximum (HW error during stress W/A) */
	iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);

	/*
	 * Enable HAP INTA (interrupt from management bus) to
	 * wake device's PCI Express link L1a -> L0s
	 * NOTE:  This is no-op for 3945 (non-existant bit)
	 */
	iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
				    CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);

	/*
1438 1439 1440 1441 1442 1443
	 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
	 * Check if BIOS (or OS) enabled L1-ASPM on this device.
	 * If so (likely), disable L0S, so device moves directly L0->L1;
	 *    costs negligible amount of power savings.
	 * If not (unlikely), enable L0S, so there is at least some
	 *    power savings, even without L1.
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
	 */
	if (priv->cfg->set_l0s) {
		lctl = iwl_pcie_link_ctl(priv);
		if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
					PCI_CFG_LINK_CTRL_VAL_L1_EN) {
			/* L1-ASPM enabled; disable(!) L0S  */
			iwl_set_bit(priv, CSR_GIO_REG,
					CSR_GIO_REG_VAL_L0S_ENABLED);
			IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
		} else {
			/* L1-ASPM disabled; enable(!) L0S */
			iwl_clear_bit(priv, CSR_GIO_REG,
					CSR_GIO_REG_VAL_L0S_ENABLED);
			IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
		}
	}

	/* Configure analog phase-lock-loop before activating to D0A */
	if (priv->cfg->pll_cfg_val)
		iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);

	/*
	 * Set "initialization complete" bit to move adapter from
	 * D0U* --> D0A* (powered-up active) state.
	 */
	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);

	/*
	 * Wait for clock stabilization; once stabilized, access to
	 * device-internal resources is supported, e.g. iwl_write_prph()
	 * and accesses to uCode SRAM.
	 */
	ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
			CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
	if (ret < 0) {
		IWL_DEBUG_INFO(priv, "Failed to init the card\n");
		goto out;
	}

	/*
	 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
	 * BSM (Boostrap State Machine) is only in 3945 and 4965;
	 * later devices (i.e. 5000 and later) have non-volatile SRAM,
	 * and don't need BSM to restore data after power-saving sleep.
	 *
	 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
	 * do not disable clocks.  This preserves any hardware bits already
	 * set by default in "CLK_CTRL_REG" after reset.
	 */
	if (priv->cfg->use_bsm)
		iwl_write_prph(priv, APMG_CLK_EN_REG,
			APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
	else
		iwl_write_prph(priv, APMG_CLK_EN_REG,
			APMG_CLK_VAL_DMA_CLK_RQT);
	udelay(20);

	/* Disable L1-Active */
	iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
			  APMG_PCIDEV_STT_VAL_L1_ACT_DIS);

out:
	return ret;
}
EXPORT_SYMBOL(iwl_apm_init);



1513 1514 1515
void iwl_configure_filter(struct ieee80211_hw *hw,
			  unsigned int changed_flags,
			  unsigned int *total_flags,
1516
			  u64 multicast)
1517 1518 1519 1520
{
	struct iwl_priv *priv = hw->priv;
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;

1521
	IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
			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);

1560 1561 1562 1563 1564
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)
Z
Zhu Yi 已提交
1565
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1566
	else
Z
Zhu Yi 已提交
1567
		priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1568

1569 1570
	priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;

1571 1572 1573
	if (priv->cfg->mod_params->disable_11n)
		priv->cfg->sku &= ~IWL_SKU_N;

1574 1575 1576 1577
	/* Device-specific setup */
	return priv->cfg->ops->lib->set_hw_params(priv);
}
EXPORT_SYMBOL(iwl_set_hw_params);
T
Tomas Winkler 已提交
1578

1579 1580 1581
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
	int ret = 0;
1582 1583
	s8 prev_tx_power = priv->tx_power_user_lmt;

1584
	if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1585 1586 1587
		IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
			 tx_power,
			 IWL_TX_POWER_TARGET_POWER_MIN);
1588 1589 1590
		return -EINVAL;
	}

1591
	if (tx_power > priv->tx_power_device_lmt) {
1592 1593
		IWL_WARN(priv,
			"Requested user TXPOWER %d above upper limit %d.\n",
1594
			 tx_power, priv->tx_power_device_lmt);
1595 1596 1597 1598 1599 1600
		return -EINVAL;
	}

	if (priv->tx_power_user_lmt != tx_power)
		force = true;

1601
	/* if nic is not up don't send command */
1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
	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;
	}
1614

1615 1616 1617 1618 1619 1620 1621
	/*
	 * 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
	 */
1622 1623 1624 1625
	return ret;
}
EXPORT_SYMBOL(iwl_set_tx_power);

M
Mohamed Abbas 已提交
1626
irqreturn_t iwl_isr_legacy(int irq, void *data)
A
Abhijeet Kolekar 已提交
1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682
{
	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;
}
M
Mohamed Abbas 已提交
1683
EXPORT_SYMBOL(iwl_isr_legacy);
A
Abhijeet Kolekar 已提交
1684

1685 1686 1687
int iwl_send_bt_config(struct iwl_priv *priv)
{
	struct iwl_bt_cmd bt_cmd = {
1688 1689
		.lead_time = BT_LEAD_TIME_DEF,
		.max_kill = BT_MAX_KILL_DEF,
1690 1691 1692 1693
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

1694 1695 1696 1697 1698 1699 1700 1701
	if (!bt_coex_active)
		bt_cmd.flags = BT_COEX_DISABLE;
	else
		bt_cmd.flags = BT_COEX_ENABLE;

	IWL_DEBUG_INFO(priv, "BT coex %s\n",
		(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");

1702 1703 1704 1705 1706
	return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
				sizeof(struct iwl_bt_cmd), &bt_cmd);
}
EXPORT_SYMBOL(iwl_send_bt_config);

1707
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1708
{
1709 1710 1711
	struct iwl_statistics_cmd statistics_cmd = {
		.configuration_flags =
			clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1712
	};
1713 1714 1715 1716 1717 1718 1719 1720 1721

	if (flags & CMD_ASYNC)
		return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
					       sizeof(struct iwl_statistics_cmd),
					       &statistics_cmd, NULL);
	else
		return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
					sizeof(struct iwl_statistics_cmd),
					&statistics_cmd);
1722 1723
}
EXPORT_SYMBOL(iwl_send_statistics_request);
1724

1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736
/**
 * 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;

1737
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1738 1739 1740 1741 1742 1743

	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,
1744
			i + IWL49_RTC_INST_LOWER_BOUND);
1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
		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;

1769
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1770

1771 1772
	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
			   IWL49_RTC_INST_LOWER_BOUND);
1773 1774 1775 1776 1777 1778 1779 1780

	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)) {
1781
			IWL_ERR(priv, "uCode INST section is invalid at "
1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
				  "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)
1792 1793
		IWL_DEBUG_INFO(priv,
		    "ucode image in INSTRUCTION memory is good\n");
1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812

	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) {
1813
		IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1814 1815 1816 1817 1818 1819 1820 1821
		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) {
1822
		IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1823 1824 1825 1826 1827 1828 1829 1830
		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) {
1831
		IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1832 1833 1834
		return 0;
	}

1835
	IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847

	/* 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);

1848

1849 1850 1851
void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
1852
	struct iwl_ct_kill_throttling_config adv_cmd;
1853 1854 1855 1856 1857 1858 1859
	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);
1860
	priv->thermal_throttle.ct_kill_toggle = false;
1861

1862
	if (priv->cfg->support_ct_kill_exit) {
1863 1864 1865 1866 1867 1868 1869
		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);
1870 1871 1872 1873 1874 1875 1876 1877 1878
		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);
1879
	} else {
1880 1881
		cmd.critical_temperature_R =
			cpu_to_le32(priv->hw_params.ct_kill_threshold);
1882

1883 1884
		ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
				       sizeof(cmd), &cmd);
1885 1886 1887 1888 1889 1890 1891
		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);
1892
	}
1893 1894
}
EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1895

1896

1897 1898 1899 1900 1901 1902 1903 1904 1905 1906
/*
 * 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.
 */
1907
int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1908 1909 1910 1911 1912
{
	struct iwl_host_cmd cmd = {
		.id = REPLY_CARD_STATE_CMD,
		.len = sizeof(u32),
		.data = &flags,
J
Johannes Berg 已提交
1913
		.flags = meta_flag,
1914 1915 1916 1917 1918
	};

	return iwl_send_cmd(priv, &cmd);
}

A
Abhijeet Kolekar 已提交
1919 1920 1921 1922
void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
			   struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
Z
Zhu Yi 已提交
1923
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
A
Abhijeet Kolekar 已提交
1924 1925 1926 1927 1928 1929 1930 1931 1932 1933
	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)
{
Z
Zhu Yi 已提交
1934
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1935
	u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
A
Abhijeet Kolekar 已提交
1936
	IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1937 1938 1939
			"notification for %s:\n", len,
			get_cmd_string(pkt->hdr.cmd));
	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
A
Abhijeet Kolekar 已提交
1940 1941
}
EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
1942 1943 1944 1945

void iwl_rx_reply_error(struct iwl_priv *priv,
			struct iwl_rx_mem_buffer *rxb)
{
Z
Zhu Yi 已提交
1946
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957

	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);

1958 1959 1960 1961 1962
void iwl_clear_isr_stats(struct iwl_priv *priv)
{
	memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
}

A
Abhijeet Kolekar 已提交
1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
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);
2006 2007

static void iwl_ht_conf(struct iwl_priv *priv,
2008
			struct ieee80211_bss_conf *bss_conf)
2009
{
J
Johannes Berg 已提交
2010
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2011 2012 2013 2014
	struct ieee80211_sta *sta;

	IWL_DEBUG_MAC80211(priv, "enter: \n");

J
Johannes Berg 已提交
2015
	if (!ht_conf->is_ht)
2016 2017
		return;

J
Johannes Berg 已提交
2018
	ht_conf->ht_protection =
2019
		bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
J
Johannes Berg 已提交
2020
	ht_conf->non_GF_STA_present =
2021
		!!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2022

2023 2024 2025 2026 2027
	ht_conf->single_chain_sufficient = false;

	switch (priv->iw_mode) {
	case NL80211_IFTYPE_STATION:
		rcu_read_lock();
2028
		sta = ieee80211_find_sta(priv->vif, priv->bssid);
2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059
		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;
	}
2060 2061 2062 2063

	IWL_DEBUG_MAC80211(priv, "leave\n");
}

2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078
static inline void iwl_set_no_assoc(struct iwl_priv *priv)
{
	priv->assoc_id = 0;
	iwl_led_disassociate(priv);
	/*
	 * inform the ucode that there is no longer an
	 * association and that no more packets should be
	 * sent
	 */
	priv->staging_rxon.filter_flags &=
		~RXON_FILTER_ASSOC_MSK;
	priv->staging_rxon.assoc_id = 0;
	iwlcore_commit_rxon(priv);
}

2079 2080
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
void iwl_bss_info_changed(struct ieee80211_hw *hw,
2081 2082 2083
			  struct ieee80211_vif *vif,
			  struct ieee80211_bss_conf *bss_conf,
			  u32 changes)
2084 2085
{
	struct iwl_priv *priv = hw->priv;
2086
	int ret;
2087 2088 2089

	IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);

2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
	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);
	}

J
Johannes Berg 已提交
2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113
	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.
		 */
2114
		if (iwl_scan_cancel_timeout(priv, 100)) {
J
Johannes Berg 已提交
2115
			IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2116 2117 2118 2119 2120
			IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
			mutex_unlock(&priv->mutex);
			return;
		}

J
Johannes Berg 已提交
2121 2122 2123 2124 2125
		/* 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);
2126

J
Johannes Berg 已提交
2127 2128 2129 2130 2131
			/* currently needed in a few places */
			memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
		} else {
			priv->staging_rxon.filter_flags &=
				~RXON_FILTER_ASSOC_MSK;
2132
		}
J
Johannes Berg 已提交
2133

2134 2135
	}

J
Johannes Berg 已提交
2136 2137 2138 2139 2140
	/*
	 * This needs to be after setting the BSSID in case
	 * mac80211 decides to do both changes at once because
	 * it will invoke post_associate.
	 */
2141 2142 2143 2144 2145 2146 2147 2148
	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);
	}

2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165
	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;
	}

J
Johannes Berg 已提交
2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182
	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;
		 */
	}

2183 2184
	if (changes & BSS_CHANGED_HT) {
		iwl_ht_conf(priv, bss_conf);
2185 2186 2187

		if (priv->cfg->ops->hcmd->set_rxon_chain)
			priv->cfg->ops->hcmd->set_rxon_chain(priv);
2188 2189 2190 2191 2192 2193 2194 2195 2196 2197
	}

	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;

J
Johannes Berg 已提交
2198 2199
			iwl_led_associate(priv);

J
Johannes Berg 已提交
2200 2201 2202 2203 2204
			/*
			 * We have just associated, don't start scan too early
			 * leave time for EAPOL exchange to complete.
			 *
			 * XXX: do this in mac80211
2205 2206 2207
			 */
			priv->next_scan_jiffies = jiffies +
					IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
J
Johannes Berg 已提交
2208 2209
			if (!iwl_is_rfkill(priv))
				priv->cfg->ops->lib->post_associate(priv);
2210 2211
		} else
			iwl_set_no_assoc(priv);
J
Johannes Berg 已提交
2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222
	}

	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));
2223 2224
		}
	}
J
Johannes Berg 已提交
2225

2226 2227 2228 2229 2230 2231 2232 2233
	if (changes & BSS_CHANGED_BEACON_ENABLED) {
		if (vif->bss_conf.enable_beacon) {
			memcpy(priv->staging_rxon.bssid_addr,
			       bss_conf->bssid, ETH_ALEN);
			memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
			iwlcore_config_ap(priv);
		} else
			iwl_set_no_assoc(priv);
2234 2235
	}

J
Johannes Berg 已提交
2236 2237
	mutex_unlock(&priv->mutex);

2238
	IWL_DEBUG_MAC80211(priv, "leave\n");
2239 2240 2241
}
EXPORT_SYMBOL(iwl_bss_info_changed);

2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
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;
	}

	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);

2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300
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);

2301
	iwl_clear_stations_table(priv);
2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312

	/* 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);

2313
int iwl_mac_add_interface(struct ieee80211_hw *hw,
2314
				 struct ieee80211_vif *vif)
2315 2316
{
	struct iwl_priv *priv = hw->priv;
2317
	int err = 0;
2318

2319
	IWL_DEBUG_MAC80211(priv, "enter: type %d\n", vif->type);
2320

2321 2322
	mutex_lock(&priv->mutex);

2323 2324
	if (priv->vif) {
		IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2325 2326
		err = -EOPNOTSUPP;
		goto out;
2327 2328
	}

2329 2330
	priv->vif = vif;
	priv->iw_mode = vif->type;
2331

2332 2333 2334
	if (vif->addr) {
		IWL_DEBUG_MAC80211(priv, "Set %pM\n", vif->addr);
		memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
2335 2336
	}

2337
	if (iwl_set_mode(priv, vif->type) == -EAGAIN)
2338 2339 2340
		/* we are not ready, will run again when ready */
		set_bit(STATUS_MODE_PENDING, &priv->status);

2341
 out:
2342 2343 2344
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "leave\n");
2345
	return err;
2346 2347 2348
}
EXPORT_SYMBOL(iwl_mac_add_interface);

2349
void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2350
				     struct ieee80211_vif *vif)
2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362
{
	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);
	}
2363
	if (priv->vif == vif) {
2364 2365 2366 2367 2368 2369 2370 2371 2372 2373
		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);

2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385
/**
 * 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;
J
Johannes Berg 已提交
2386
	struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402
	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");
	}

J
Johannes Berg 已提交
2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417
	if (changed & (IEEE80211_CONF_CHANGE_SMPS |
		       IEEE80211_CONF_CHANGE_CHANNEL)) {
		/* mac80211 uses static for non-HT which is what we want */
		priv->current_ht_config.smps = conf->smps_mode;

		/*
		 * Recalculate chain counts.
		 *
		 * If monitor mode is enabled then mac80211 will
		 * set up the SM PS mode to OFF if an HT channel is
		 * configured.
		 */
		if (priv->cfg->ops->hcmd->set_rxon_chain)
			priv->cfg->ops->hcmd->set_rxon_chain(priv);
	}
2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435

	/* 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;
		}

		spin_lock_irqsave(&priv->lock, flags);

2436 2437 2438 2439 2440 2441
		/* 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;
2442
				ht_conf->is_40mhz = true;
2443 2444 2445
			} else if (conf_is_ht40_plus(conf)) {
				ht_conf->extension_chan_offset =
					IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2446
				ht_conf->is_40mhz = true;
2447 2448 2449
			} else {
				ht_conf->extension_chan_offset =
					IEEE80211_HT_PARAM_CHA_SEC_NONE;
2450
				ht_conf->is_40mhz = false;
2451 2452
			}
		} else
2453
			ht_conf->is_40mhz = false;
2454 2455 2456
		/* 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;
2457 2458 2459 2460 2461 2462 2463 2464

		/* 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);
2465
		iwl_set_rxon_ht(priv, ht_conf);
2466 2467 2468

		iwl_set_flags_for_band(priv, conf->channel->band);
		spin_unlock_irqrestore(&priv->lock, flags);
W
Wey-Yi Guy 已提交
2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484
		if (iwl_is_associated(priv) &&
		    (le16_to_cpu(priv->active_rxon.channel) != ch) &&
		    priv->cfg->ops->lib->set_channel_switch) {
			iwl_set_rate(priv);
			/*
			 * at this point, staging_rxon has the
			 * configuration for channel switch
			 */
			ret = priv->cfg->ops->lib->set_channel_switch(priv,
				ch);
			if (!ret) {
				iwl_print_rx_config_cmd(priv);
				goto out;
			}
			priv->switch_rxon.switch_in_progress = false;
		}
2485 2486 2487 2488 2489 2490 2491
 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);
	}

2492 2493
	if (changed & (IEEE80211_CONF_CHANGE_PS |
			IEEE80211_CONF_CHANGE_IDLE)) {
2494
		ret = iwl_power_update_mode(priv, false);
2495
		if (ret)
2496
			IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2497 2498 2499 2500 2501 2502 2503 2504 2505
	}

	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);
	}

2506 2507 2508 2509 2510
	if (!iwl_is_ready(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
		goto out;
	}

2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527
	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);

2528 2529 2530 2531 2532 2533 2534 2535 2536
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);
J
Johannes Berg 已提交
2537
	memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552
	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;

2553
	priv->beacon_int = priv->vif->bss_conf.beacon_int;
2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566
	priv->timestamp = 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
	 */
2567 2568 2569
	iwl_scan_cancel_timeout(priv, 100);
	priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	iwlcore_commit_rxon(priv);
2570 2571 2572 2573 2574 2575 2576 2577 2578

	iwl_set_rate(priv);

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211(priv, "leave\n");
}
EXPORT_SYMBOL(iwl_mac_reset_tsf);

2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599
int iwl_alloc_txq_mem(struct iwl_priv *priv)
{
	if (!priv->txq)
		priv->txq = kzalloc(
			sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
			GFP_KERNEL);
	if (!priv->txq) {
		IWL_ERR(priv, "Not enough memory for txq \n");
		return -ENOMEM;
	}
	return 0;
}
EXPORT_SYMBOL(iwl_alloc_txq_mem);

void iwl_free_txq_mem(struct iwl_priv *priv)
{
	kfree(priv->txq);
	priv->txq = NULL;
}
EXPORT_SYMBOL(iwl_free_txq_mem);

2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627
int iwl_send_wimax_coex(struct iwl_priv *priv)
{
	struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);

	if (priv->cfg->support_wimax_coexist) {
		/* UnMask wake up src at associated sleep */
		coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;

		/* UnMask wake up src at unassociated sleep */
		coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
		memcpy(coex_cmd.sta_prio, cu_priorities,
			sizeof(struct iwl_wimax_coex_event_entry) *
			 COEX_NUM_OF_EVENTS);

		/* enabling the coexistence feature */
		coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;

		/* enabling the priorities tables */
		coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
	} else {
		/* coexistence is disabled */
		memset(&coex_cmd, 0, sizeof(coex_cmd));
	}
	return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
				sizeof(coex_cmd), &coex_cmd);
}
EXPORT_SYMBOL(iwl_send_wimax_coex);

2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725
#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);
2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764

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";

	}
}

2765
void iwl_clear_traffic_stats(struct iwl_priv *priv)
2766 2767 2768
{
	memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
	memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2769
	priv->led_tpt = 0;
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}

/*
 * 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;
	}
2862
	iwl_leds_background(priv);
2863 2864
}
EXPORT_SYMBOL(iwl_update_stats);
2865 2866
#endif

2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937
const static char *get_csr_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(CSR_HW_IF_CONFIG_REG);
		IWL_CMD(CSR_INT_COALESCING);
		IWL_CMD(CSR_INT);
		IWL_CMD(CSR_INT_MASK);
		IWL_CMD(CSR_FH_INT_STATUS);
		IWL_CMD(CSR_GPIO_IN);
		IWL_CMD(CSR_RESET);
		IWL_CMD(CSR_GP_CNTRL);
		IWL_CMD(CSR_HW_REV);
		IWL_CMD(CSR_EEPROM_REG);
		IWL_CMD(CSR_EEPROM_GP);
		IWL_CMD(CSR_OTP_GP_REG);
		IWL_CMD(CSR_GIO_REG);
		IWL_CMD(CSR_GP_UCODE_REG);
		IWL_CMD(CSR_GP_DRIVER_REG);
		IWL_CMD(CSR_UCODE_DRV_GP1);
		IWL_CMD(CSR_UCODE_DRV_GP2);
		IWL_CMD(CSR_LED_REG);
		IWL_CMD(CSR_DRAM_INT_TBL_REG);
		IWL_CMD(CSR_GIO_CHICKEN_BITS);
		IWL_CMD(CSR_ANA_PLL_CFG);
		IWL_CMD(CSR_HW_REV_WA_REG);
		IWL_CMD(CSR_DBG_HPET_MEM_REG);
	default:
		return "UNKNOWN";

	}
}

void iwl_dump_csr(struct iwl_priv *priv)
{
	int i;
	u32 csr_tbl[] = {
		CSR_HW_IF_CONFIG_REG,
		CSR_INT_COALESCING,
		CSR_INT,
		CSR_INT_MASK,
		CSR_FH_INT_STATUS,
		CSR_GPIO_IN,
		CSR_RESET,
		CSR_GP_CNTRL,
		CSR_HW_REV,
		CSR_EEPROM_REG,
		CSR_EEPROM_GP,
		CSR_OTP_GP_REG,
		CSR_GIO_REG,
		CSR_GP_UCODE_REG,
		CSR_GP_DRIVER_REG,
		CSR_UCODE_DRV_GP1,
		CSR_UCODE_DRV_GP2,
		CSR_LED_REG,
		CSR_DRAM_INT_TBL_REG,
		CSR_GIO_CHICKEN_BITS,
		CSR_ANA_PLL_CFG,
		CSR_HW_REV_WA_REG,
		CSR_DBG_HPET_MEM_REG
	};
	IWL_ERR(priv, "CSR values:\n");
	IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
		"CSR_INT_PERIODIC_REG)\n");
	for (i = 0; i <  ARRAY_SIZE(csr_tbl); i++) {
		IWL_ERR(priv, "  %25s: 0X%08x\n",
			get_csr_string(csr_tbl[i]),
			iwl_read32(priv, csr_tbl[i]));
	}
}
EXPORT_SYMBOL(iwl_dump_csr);

2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000
const static char *get_fh_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
		IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
		IWL_CMD(FH_RSCSR_CHNL0_WPTR);
		IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
		IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
		IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
		IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
		IWL_CMD(FH_TSSR_TX_STATUS_REG);
		IWL_CMD(FH_TSSR_TX_ERROR_REG);
	default:
		return "UNKNOWN";

	}
}

int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
{
	int i;
#ifdef CONFIG_IWLWIFI_DEBUG
	int pos = 0;
	size_t bufsz = 0;
#endif
	u32 fh_tbl[] = {
		FH_RSCSR_CHNL0_STTS_WPTR_REG,
		FH_RSCSR_CHNL0_RBDCB_BASE_REG,
		FH_RSCSR_CHNL0_WPTR,
		FH_MEM_RCSR_CHNL0_CONFIG_REG,
		FH_MEM_RSSR_SHARED_CTRL_REG,
		FH_MEM_RSSR_RX_STATUS_REG,
		FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
		FH_TSSR_TX_STATUS_REG,
		FH_TSSR_TX_ERROR_REG
	};
#ifdef CONFIG_IWLWIFI_DEBUG
	if (display) {
		bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
		*buf = kmalloc(bufsz, GFP_KERNEL);
		if (!*buf)
			return -ENOMEM;
		pos += scnprintf(*buf + pos, bufsz - pos,
				"FH register values:\n");
		for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
			pos += scnprintf(*buf + pos, bufsz - pos,
				"  %34s: 0X%08x\n",
				get_fh_string(fh_tbl[i]),
				iwl_read_direct32(priv, fh_tbl[i]));
		}
		return pos;
	}
#endif
	IWL_ERR(priv, "FH register values:\n");
	for (i = 0; i <  ARRAY_SIZE(fh_tbl); i++) {
		IWL_ERR(priv, "  %34s: 0X%08x\n",
			get_fh_string(fh_tbl[i]),
			iwl_read_direct32(priv, fh_tbl[i]));
	}
	return 0;
}
EXPORT_SYMBOL(iwl_dump_fh);

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Wey-Yi Guy 已提交
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static void iwl_force_rf_reset(struct iwl_priv *priv)
3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022
{
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	if (!iwl_is_associated(priv)) {
		IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
		return;
	}
	/*
	 * There is no easy and better way to force reset the radio,
	 * the only known method is switching channel which will force to
	 * reset and tune the radio.
	 * Use internal short scan (single channel) operation to should
	 * achieve this objective.
	 * Driver should reset the radio when number of consecutive missed
	 * beacon, or any other uCode error condition detected.
	 */
	IWL_DEBUG_INFO(priv, "perform radio reset.\n");
	iwl_internal_short_hw_scan(priv);
	return;
}
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Wey-Yi Guy 已提交
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int iwl_force_reset(struct iwl_priv *priv, int mode)
{
3027 3028
	struct iwl_force_reset *force_reset;

W
Wey-Yi Guy 已提交
3029 3030 3031
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return -EINVAL;

3032 3033 3034 3035 3036 3037 3038 3039 3040
	if (mode >= IWL_MAX_FORCE_RESET) {
		IWL_DEBUG_INFO(priv, "invalid reset request.\n");
		return -EINVAL;
	}
	force_reset = &priv->force_reset[mode];
	force_reset->reset_request_count++;
	if (force_reset->last_force_reset_jiffies &&
	    time_after(force_reset->last_force_reset_jiffies +
	    force_reset->reset_duration, jiffies)) {
W
Wey-Yi Guy 已提交
3041
		IWL_DEBUG_INFO(priv, "force reset rejected\n");
3042
		force_reset->reset_reject_count++;
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Wey-Yi Guy 已提交
3043 3044
		return -EAGAIN;
	}
3045 3046
	force_reset->reset_success_count++;
	force_reset->last_force_reset_jiffies = jiffies;
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Wey-Yi Guy 已提交
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	IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
	switch (mode) {
	case IWL_RF_RESET:
		iwl_force_rf_reset(priv);
		break;
	case IWL_FW_RESET:
		IWL_ERR(priv, "On demand firmware reload\n");
		/* Set the FW error flag -- cleared on iwl_down */
		set_bit(STATUS_FW_ERROR, &priv->status);
		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);
		queue_work(priv->workqueue, &priv->restart);
		break;
	}
	return 0;
}
3067

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#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 */