iwl-core.c 69.7 KB
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/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2008 - 2009 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 <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-rfkill.h"
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#include "iwl-power.h"
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#include "iwl-sta.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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#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 }

/*
 * 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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{
	int rate_index;
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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_FAT_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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	rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
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	if (info->band == IEEE80211_BAND_5GHZ)
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		rate_index -= IWL_FIRST_OFDM_RATE;
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	r->idx = rate_index;
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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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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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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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	iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
	spin_unlock_irqrestore(&priv->lock, flags);

	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);

	priv->cfg->ops->lib->apm_ops.config(priv);

	/* Allocate the RX queue, or reset if it is already allocated */
	if (!rxq->bd) {
		ret = iwl_rx_queue_alloc(priv);
		if (ret) {
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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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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;

	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) {
		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;

		i = 2;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16(cw_max);
		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;

		i = 3;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 4 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16((cw_max + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3264);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(1504);
	} else {
		for (i = 1; i < 4; i++) {
			priv->qos_data.def_qos_parm.ac[i].cw_min =
				cpu_to_le16(cw_min);
			priv->qos_data.def_qos_parm.ac[i].cw_max =
				cpu_to_le16(cw_max);
			priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
			priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
			priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		}
	}
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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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	ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
	ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
	ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
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			     (WLAN_HT_CAP_SM_PS_DISABLED << 2));
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	max_bit_rate = MAX_BIT_RATE_20_MHZ;
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	if (priv->hw_params.fat_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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}

static void iwlcore_init_hw_rates(struct iwl_priv *priv,
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
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		rates[i].bitrate = iwl_rates[i].ieee * 5;
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		rates[i].hw_value = i; /* Rate scaling will work on indexes */
		rates[i].hw_value_short = i;
		rates[i].flags = 0;
		if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
			/*
			 * If CCK != 1M then set short preamble rate flag.
			 */
			rates[i].flags |=
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				(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
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					0 : IEEE80211_RATE_SHORT_PREAMBLE;
		}
	}
}

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/**
 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
 */
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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) {
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		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;

	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
	sband = &priv->bands[IEEE80211_BAND_5GHZ];
	sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
	/* just OFDM */
	sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
	sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;

479
	if (priv->cfg->sku & IWL_SKU_N)
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Johannes Berg 已提交
480
		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
481
					 IEEE80211_BAND_5GHZ);
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Ron Rindjunsky 已提交
482 483 484 485 486 487 488

	sband = &priv->bands[IEEE80211_BAND_2GHZ];
	sband->channels = channels;
	/* OFDM & CCK */
	sband->bitrates = rates;
	sband->n_bitrates = IWL_RATE_COUNT;

489
	if (priv->cfg->sku & IWL_SKU_N)
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Johannes Berg 已提交
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		iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
491
					 IEEE80211_BAND_2GHZ);
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Ron Rindjunsky 已提交
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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;

526
			geo_ch->flags |= ch->fat_extension_channel;
527

528 529
			if (ch->max_power_avg > priv->tx_power_channel_lmt)
				priv->tx_power_channel_lmt = ch->max_power_avg;
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Ron Rindjunsky 已提交
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		} else {
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
		}

		/* Save flags for reg domain usage */
		geo_ch->orig_flags = geo_ch->flags;

537
		IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
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Ron Rindjunsky 已提交
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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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Tomas Winkler 已提交
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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",
549 550
			   priv->pci_dev->device,
			   priv->pci_dev->subsystem_device);
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Ron Rindjunsky 已提交
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		priv->cfg->sku &= ~IWL_SKU_A;
	}

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Tomas Winkler 已提交
554
	IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
555 556
		   priv->bands[IEEE80211_BAND_2GHZ].n_channels,
		   priv->bands[IEEE80211_BAND_5GHZ].n_channels);
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Ron Rindjunsky 已提交
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	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}
562
EXPORT_SYMBOL(iwlcore_init_geos);
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Ron Rindjunsky 已提交
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/*
 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
 */
567
void iwlcore_free_geos(struct iwl_priv *priv)
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Ron Rindjunsky 已提交
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{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
573
EXPORT_SYMBOL(iwlcore_free_geos);
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Ron Rindjunsky 已提交
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575
static bool is_single_rx_stream(struct iwl_priv *priv)
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{
	return !priv->current_ht_config.is_ht ||
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	       ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
		(priv->current_ht_config.mcs.rx_mask[2] == 0));
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}
581

582 583 584 585 586 587 588 589 590 591
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)
593 594
		return !(ch_info->fat_extension_channel &
					IEEE80211_CHAN_NO_FAT_ABOVE);
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	else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
596 597
		return !(ch_info->fat_extension_channel &
					IEEE80211_CHAN_NO_FAT_BELOW);
598 599 600 601 602

	return 0;
}

u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
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Johannes Berg 已提交
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			 struct ieee80211_sta_ht_cap *sta_ht_inf)
604 605 606 607 608
{
	struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;

	if ((!iwl_ht_conf->is_ht) ||
	   (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
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609
	   (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
610 611 612 613
		return 0;

	if (sta_ht_inf) {
		if ((!sta_ht_inf->ht_supported) ||
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Johannes Berg 已提交
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		   (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
615 616 617 618
			return 0;
	}

	return iwl_is_channel_extension(priv, priv->band,
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Johannes Berg 已提交
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					le16_to_cpu(priv->staging_rxon.channel),
					iwl_ht_conf->extension_chan_offset);
621 622 623
}
EXPORT_SYMBOL(iwl_is_fat_tx_allowed);

624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784
void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
{
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (hw_decrypt)
		rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
	else
		rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;

}
EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);

/**
 * iwl_check_rxon_cmd - validate RXON structure is valid
 *
 * NOTE:  This is really only useful during development and can eventually
 * be #ifdef'd out once the driver is stable and folks aren't actively
 * making changes
 */
int iwl_check_rxon_cmd(struct iwl_priv *priv)
{
	int error = 0;
	int counter = 1;
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;

	if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
		error |= le32_to_cpu(rxon->flags &
				(RXON_FLG_TGJ_NARROW_BAND_MSK |
				 RXON_FLG_RADAR_DETECT_MSK));
		if (error)
			IWL_WARN(priv, "check 24G fields %d | %d\n",
				    counter++, error);
	} else {
		error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
				0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
		if (error)
			IWL_WARN(priv, "check 52 fields %d | %d\n",
				    counter++, error);
		error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
		if (error)
			IWL_WARN(priv, "check 52 CCK %d | %d\n",
				    counter++, error);
	}
	error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
	if (error)
		IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);

	/* make sure basic rates 6Mbps and 1Mbps are supported */
	error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
		  ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
	if (error)
		IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);

	error |= (le16_to_cpu(rxon->assoc_id) > 2007);
	if (error)
		IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK and short slot %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
	if (error)
		IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
			RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
	if (error)
		IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
			    counter++, error);

	if (error)
		IWL_WARN(priv, "Tuning to channel %d\n",
			    le16_to_cpu(rxon->channel));

	if (error) {
		IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
		return -1;
	}
	return 0;
}
EXPORT_SYMBOL(iwl_check_rxon_cmd);

/**
 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 * @priv: staging_rxon is compared to active_rxon
 *
 * If the RXON structure is changing enough to require a new tune,
 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 */
int iwl_full_rxon_required(struct iwl_priv *priv)
{

	/* These items are only settable from the full RXON command */
	if (!(iwl_is_associated(priv)) ||
	    compare_ether_addr(priv->staging_rxon.bssid_addr,
			       priv->active_rxon.bssid_addr) ||
	    compare_ether_addr(priv->staging_rxon.node_addr,
			       priv->active_rxon.node_addr) ||
	    compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
			       priv->active_rxon.wlap_bssid_addr) ||
	    (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
	    (priv->staging_rxon.channel != priv->active_rxon.channel) ||
	    (priv->staging_rxon.air_propagation !=
	     priv->active_rxon.air_propagation) ||
	    (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
	    (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
	     priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
	    (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
		return 1;

	/* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
	 * be updated with the RXON_ASSOC command -- however only some
	 * flag transitions are allowed using RXON_ASSOC */

	/* Check if we are not switching bands */
	if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
	    (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
		return 1;

	/* Check if we are switching association toggle */
	if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
		(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
		return 1;

	return 0;
}
EXPORT_SYMBOL(iwl_full_rxon_required);

u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
{
	int i;
	int rate_mask;

	/* Set rate mask*/
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
	else
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;

	/* Find lowest valid rate */
	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
					i = iwl_rates[i].next_ieee) {
		if (rate_mask & (1 << i))
			return iwl_rates[i].plcp;
	}

	/* No valid rate was found. Assign the lowest one */
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		return IWL_RATE_1M_PLCP;
	else
		return IWL_RATE_6M_PLCP;
}
EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);

785 786
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
{
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Gregory Greenman 已提交
787
	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
788 789
	u32 val;

790 791 792 793 794 795
	if (!ht_info->is_ht) {
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
			RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
			RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
			RXON_FLG_FAT_PROT_MSK |
			RXON_FLG_HT_PROT_MSK);
796
		return;
797
	}
798 799 800 801 802 803 804 805 806 807

	/* Set up channel bandwidth:  20 MHz only, or 20/40 mixed if fat ok */
	if (iwl_is_fat_tx_allowed(priv, NULL))
		rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
	else
		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
				 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);

	/* Note: control channel is opposite of extension channel */
	switch (ht_info->extension_chan_offset) {
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Johannes Berg 已提交
808
	case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
809 810
		rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
		break;
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Johannes Berg 已提交
811
	case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
812 813
		rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
		break;
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Johannes Berg 已提交
814
	case IEEE80211_HT_PARAM_CHA_SEC_NONE:
815 816 817 818 819 820 821 822 823
	default:
		rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
		break;
	}

	val = ht_info->ht_protection;

	rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);

824 825
	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);
826

827
	IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
828
			"rxon flags 0x%X operation mode :0x%X "
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Johannes Berg 已提交
829
			"extension channel offset 0x%x\n",
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Johannes Berg 已提交
830 831 832
			ht_info->mcs.rx_mask[0],
			ht_info->mcs.rx_mask[1],
			ht_info->mcs.rx_mask[2],
833
			le32_to_cpu(rxon->flags), ht_info->ht_protection,
J
Johannes Berg 已提交
834
			ht_info->extension_chan_offset);
835 836 837 838
	return;
}
EXPORT_SYMBOL(iwl_set_rxon_ht);

839 840 841 842 843 844
#define IWL_NUM_RX_CHAINS_MULTIPLE	3
#define IWL_NUM_RX_CHAINS_SINGLE	2
#define IWL_NUM_IDLE_CHAINS_DUAL	2
#define IWL_NUM_IDLE_CHAINS_SINGLE	1

/* Determine how many receiver/antenna chains to use.
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Ron Rindjunsky 已提交
845 846 847 848
 * More provides better reception via diversity.  Fewer saves power.
 * MIMO (dual stream) requires at least 2, but works better with 3.
 * This does not determine *which* chains to use, just how many.
 */
849
static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
850
{
851 852
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
R
Ron Rindjunsky 已提交
853 854

	/* # of Rx chains to use when expecting MIMO. */
855 856
	if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
						 WLAN_HT_CAP_SM_PS_STATIC)))
857
		return IWL_NUM_RX_CHAINS_SINGLE;
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Ron Rindjunsky 已提交
858
	else
859
		return IWL_NUM_RX_CHAINS_MULTIPLE;
860
}
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Ron Rindjunsky 已提交
861

862 863 864 865
static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
{
	int idle_cnt;
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
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Ron Rindjunsky 已提交
866
	/* # Rx chains when idling and maybe trying to save power */
867
	switch (priv->current_ht_config.sm_ps) {
868 869
	case WLAN_HT_CAP_SM_PS_STATIC:
	case WLAN_HT_CAP_SM_PS_DYNAMIC:
870 871
		idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
					IWL_NUM_IDLE_CHAINS_SINGLE;
R
Ron Rindjunsky 已提交
872
		break;
873
	case WLAN_HT_CAP_SM_PS_DISABLED:
874
		idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
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Ron Rindjunsky 已提交
875
		break;
876
	case WLAN_HT_CAP_SM_PS_INVALID:
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Ron Rindjunsky 已提交
877
	default:
878
		IWL_ERR(priv, "invalid mimo ps mode %d\n",
879
			   priv->current_ht_config.sm_ps);
880 881
		WARN_ON(1);
		idle_cnt = -1;
R
Ron Rindjunsky 已提交
882 883
		break;
	}
884
	return idle_cnt;
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Ron Rindjunsky 已提交
885 886
}

887 888 889 890 891 892 893 894 895 896 897
/* up to 4 chains */
static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
{
	u8 res;
	res = (chain_bitmap & BIT(0)) >> 0;
	res += (chain_bitmap & BIT(1)) >> 1;
	res += (chain_bitmap & BIT(2)) >> 2;
	res += (chain_bitmap & BIT(4)) >> 4;
	return res;
}

898 899 900 901 902 903 904 905 906 907 908 909
/**
 * 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).
 */
static bool iwl_is_monitor_mode(struct iwl_priv *priv)
{
	return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
}

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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)
{
918 919
	bool is_single = is_single_rx_stream(priv);
	bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
920 921
	u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
	u32 active_chains;
922
	u16 rx_chain;
R
Ron Rindjunsky 已提交
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	/* 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. */
928 929 930 931 932 933
	 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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Ron Rindjunsky 已提交
934 935

	/* How many receivers should we use? */
936 937 938 939
	active_rx_cnt = iwl_get_active_rx_chain_count(priv);
	idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);


940 941 942 943 944 945 946 947 948
	/* 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;
949 950 951 952

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

953 954 955 956 957 958 959 960 961 962 963 964 965
	/* copied from 'iwl_bg_request_scan()' */
	/* Force use of chains B and C (0x6) for Rx for 4965
	 * Avoid A (0x1) because of its off-channel reception on A-band.
	 * MIMO is not used here, but value is required */
	if (iwl_is_monitor_mode(priv) &&
	    !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
	    ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
		rx_chain = 0x07 << RXON_RX_CHAIN_VALID_POS;
		rx_chain |= 0x06 << RXON_RX_CHAIN_FORCE_SEL_POS;
		rx_chain |= 0x07 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
		rx_chain |= 0x01 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
	}

966 967
	priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);

968
	if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
R
Ron Rindjunsky 已提交
969 970 971 972
		priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
	else
		priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;

973
	IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
974 975 976 977 978
			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);
R
Ron Rindjunsky 已提交
979 980
}
EXPORT_SYMBOL(iwl_set_rxon_chain);
981 982

/**
983
 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
984 985 986 987 988 989 990 991
 * @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
 */
992
int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
993
{
994 995 996
	enum ieee80211_band band = ch->band;
	u16 channel = ieee80211_frequency_to_channel(ch->center_freq);

997
	if (!iwl_get_channel_info(priv, band, channel)) {
998
		IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
			       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;

1015
	IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1016 1017 1018

	return 0;
}
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Ron Rindjunsky 已提交
1019
EXPORT_SYMBOL(iwl_set_rxon_channel);
1020

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
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;
	}
}
EXPORT_SYMBOL(iwl_set_flags_for_band);

/*
 * 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;

	case NL80211_IFTYPE_MONITOR:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
		priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
		    RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
		break;
	default:
		IWL_ERR(priv, "Unsupported interface type %d\n", mode);
		break;
	}

#if 0
	/* TODO:  Figure out when short_preamble would be set and cache from
	 * that */
	if (!hw_to_local(priv->hw)->short_preamble)
		priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
#endif

	ch_info = iwl_get_channel_info(priv, priv->band,
				       le16_to_cpu(priv->active_rxon.channel));

	if (!ch_info)
		ch_info = &priv->channel_info[0];

	/*
	 * in some case A channels are all non IBSS
	 * in this case force B/G channel
	 */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
	    !(is_channel_ibss(ch_info)))
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	priv->band = ch_info->band;

	iwl_set_flags_for_band(priv, priv->band);

	priv->staging_rxon.ofdm_basic_rates =
	    (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
	priv->staging_rxon.cck_basic_rates =
	    (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
					RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
	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;
1121
	priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
}
EXPORT_SYMBOL(iwl_connection_init_rx_config);

void iwl_set_rate(struct iwl_priv *priv)
{
	const struct ieee80211_supported_band *hw = NULL;
	struct ieee80211_rate *rate;
	int i;

	hw = iwl_get_hw_mode(priv, priv->band);
	if (!hw) {
		IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
		return;
	}

	priv->active_rate = 0;
	priv->active_rate_basic = 0;

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

1146
	IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177
		       priv->active_rate, priv->active_rate_basic);

	/*
	 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
	 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
	 * OFDM
	 */
	if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
		priv->staging_rxon.cck_basic_rates =
		    ((priv->active_rate_basic &
		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
	else
		priv->staging_rxon.cck_basic_rates =
		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
		priv->staging_rxon.ofdm_basic_rates =
		    ((priv->active_rate_basic &
		      (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
		      IWL_FIRST_OFDM_RATE) & 0xFF;
	else
		priv->staging_rxon.ofdm_basic_rates =
		   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
}
EXPORT_SYMBOL(iwl_set_rate);

void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
	struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1178
	IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
		      le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
	rxon->channel = csa->channel;
	priv->staging_rxon.channel = csa->channel;
}
EXPORT_SYMBOL(iwl_rx_csa);

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

1190
	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1191
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1192 1193 1194
	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",
1195
			le32_to_cpu(rxon->filter_flags));
1196 1197
	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1198
			rxon->ofdm_basic_rates);
1199 1200 1201 1202
	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));
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
}
#endif

/**
 * iwl_irq_handle_error - called for HW or SW error interrupt from card
 */
void iwl_irq_handle_error(struct iwl_priv *priv)
{
	/* Set the FW error flag -- cleared on iwl_down */
	set_bit(STATUS_FW_ERROR, &priv->status);

	/* Cancel currently queued command. */
	clear_bit(STATUS_HCMD_ACTIVE, &priv->status);

#ifdef CONFIG_IWLWIFI_DEBUG
	if (priv->debug_level & IWL_DL_FW_ERRORS) {
		iwl_dump_nic_error_log(priv);
		iwl_dump_nic_event_log(priv);
		iwl_print_rx_config_cmd(priv);
	}
#endif

	wake_up_interruptible(&priv->wait_command_queue);

	/* Keep the restart process from trying to send host
	 * commands by clearing the INIT status bit */
	clear_bit(STATUS_READY, &priv->status);

	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1232
		IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
			  "Restarting adapter due to uCode error.\n");

		if (iwl_is_associated(priv)) {
			memcpy(&priv->recovery_rxon, &priv->active_rxon,
			       sizeof(priv->recovery_rxon));
			priv->error_recovering = 1;
		}
		if (priv->cfg->mod_params->restart_fw)
			queue_work(priv->workqueue, &priv->restart);
	}
}
EXPORT_SYMBOL(iwl_irq_handle_error);

void iwl_configure_filter(struct ieee80211_hw *hw,
			  unsigned int changed_flags,
			  unsigned int *total_flags,
			  int mc_count, struct dev_addr_list *mc_list)
{
	struct iwl_priv *priv = hw->priv;
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;

1254
	IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
			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);

T
Tomas Winkler 已提交
1293
int iwl_setup_mac(struct iwl_priv *priv)
1294
{
T
Tomas Winkler 已提交
1295
	int ret;
1296
	struct ieee80211_hw *hw = priv->hw;
1297
	hw->rate_control_algorithm = "iwl-agn-rs";
1298

1299
	/* Tell mac80211 our characteristics */
1300
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
S
Sujith 已提交
1301
		    IEEE80211_HW_NOISE_DBM |
1302
		    IEEE80211_HW_AMPDU_AGGREGATION |
M
Mohamed Abbas 已提交
1303
		    IEEE80211_HW_SPECTRUM_MGMT |
1304
		    IEEE80211_HW_SUPPORTS_PS;
1305 1306 1307
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);
1308

1309
	hw->wiphy->custom_regulatory = true;
1310
	hw->wiphy->max_scan_ssids = 1;
1311
	hw->wiphy->max_scan_ie_len = 0; /* XXX for now */
1312

1313 1314
	/* Default value; 4 EDCA QOS priorities */
	hw->queues = 4;
T
Tomas Winkler 已提交
1315 1316

	hw->conf.beacon_int = 100;
1317
	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
T
Tomas Winkler 已提交
1318 1319 1320 1321 1322 1323 1324 1325 1326 1327

	if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
			&priv->bands[IEEE80211_BAND_2GHZ];
	if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
		priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
			&priv->bands[IEEE80211_BAND_5GHZ];

	ret = ieee80211_register_hw(priv->hw);
	if (ret) {
1328
		IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
T
Tomas Winkler 已提交
1329 1330 1331 1332 1333
		return ret;
	}
	priv->mac80211_registered = 1;

	return 0;
1334
}
T
Tomas Winkler 已提交
1335
EXPORT_SYMBOL(iwl_setup_mac);
1336

1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
int iwl_set_hw_params(struct iwl_priv *priv)
{
	priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
	priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
	priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
	if (priv->cfg->mod_params->amsdu_size_8K)
		priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
	else
		priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
	priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;

1348 1349 1350
	if (priv->cfg->mod_params->disable_11n)
		priv->cfg->sku &= ~IWL_SKU_N;

1351 1352 1353 1354
	/* Device-specific setup */
	return priv->cfg->ops->lib->set_hw_params(priv);
}
EXPORT_SYMBOL(iwl_set_hw_params);
T
Tomas Winkler 已提交
1355 1356

int iwl_init_drv(struct iwl_priv *priv)
R
Ron Rindjunsky 已提交
1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371
{
	int ret;

	priv->ibss_beacon = NULL;

	spin_lock_init(&priv->lock);
	spin_lock_init(&priv->power_data.lock);
	spin_lock_init(&priv->sta_lock);
	spin_lock_init(&priv->hcmd_lock);

	INIT_LIST_HEAD(&priv->free_frames);

	mutex_init(&priv->mutex);

	/* Clear the driver's (not device's) station table */
1372
	priv->cfg->ops->smgmt->clear_station_table(priv);
R
Ron Rindjunsky 已提交
1373 1374 1375 1376 1377 1378

	priv->data_retry_limit = -1;
	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
	priv->band = IEEE80211_BAND_2GHZ;

1379
	priv->iw_mode = NL80211_IFTYPE_STATION;
R
Ron Rindjunsky 已提交
1380

1381
	priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
R
Ron Rindjunsky 已提交
1382 1383

	/* Choose which receivers/antennas to use */
1384 1385 1386
	if (priv->cfg->ops->hcmd->set_rxon_chain)
		priv->cfg->ops->hcmd->set_rxon_chain(priv);

T
Tomas Winkler 已提交
1387
	iwl_init_scan_params(priv);
R
Ron Rindjunsky 已提交
1388 1389 1390 1391 1392 1393 1394

	iwl_reset_qos(priv);

	priv->qos_data.qos_active = 0;
	priv->qos_data.qos_cap.val = 0;

	priv->rates_mask = IWL_RATES_MASK;
1395 1396
	/* If power management is turned on, default to CAM mode */
	priv->power_mode = IWL_POWER_MODE_CAM;
1397
	priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
R
Ron Rindjunsky 已提交
1398 1399 1400

	ret = iwl_init_channel_map(priv);
	if (ret) {
1401
		IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
R
Ron Rindjunsky 已提交
1402 1403 1404 1405 1406
		goto err;
	}

	ret = iwlcore_init_geos(priv);
	if (ret) {
1407
		IWL_ERR(priv, "initializing geos failed: %d\n", ret);
R
Ron Rindjunsky 已提交
1408 1409
		goto err_free_channel_map;
	}
1410
	iwlcore_init_hw_rates(priv, priv->ieee_rates);
R
Ron Rindjunsky 已提交
1411 1412 1413 1414 1415 1416 1417 1418

	return 0;

err_free_channel_map:
	iwl_free_channel_map(priv);
err:
	return ret;
}
T
Tomas Winkler 已提交
1419
EXPORT_SYMBOL(iwl_init_drv);
R
Ron Rindjunsky 已提交
1420

1421 1422 1423 1424
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
	int ret = 0;
	if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1425 1426 1427
		IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
			 tx_power,
			 IWL_TX_POWER_TARGET_POWER_MIN);
1428 1429 1430 1431
		return -EINVAL;
	}

	if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1432 1433 1434
		IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
			 tx_power,
			 IWL_TX_POWER_TARGET_POWER_MAX);
1435 1436 1437 1438 1439 1440 1441 1442
		return -EINVAL;
	}

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

	priv->tx_power_user_lmt = tx_power;

1443 1444 1445 1446
	/* if nic is not up don't send command */
	if (!iwl_is_ready_rf(priv))
		return ret;

1447 1448 1449 1450 1451 1452 1453
	if (force && priv->cfg->ops->lib->send_tx_power)
		ret = priv->cfg->ops->lib->send_tx_power(priv);

	return ret;
}
EXPORT_SYMBOL(iwl_set_tx_power);

T
Tomas Winkler 已提交
1454
void iwl_uninit_drv(struct iwl_priv *priv)
1455
{
1456
	iwl_calib_free_results(priv);
T
Tomas Winkler 已提交
1457 1458
	iwlcore_free_geos(priv);
	iwl_free_channel_map(priv);
1459
	kfree(priv->scan);
1460
}
T
Tomas Winkler 已提交
1461
EXPORT_SYMBOL(iwl_uninit_drv);
1462

1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474

void iwl_disable_interrupts(struct iwl_priv *priv)
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
	iwl_write32(priv, CSR_INT, 0xffffffff);
	iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1475
	IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1476 1477 1478 1479 1480
}
EXPORT_SYMBOL(iwl_disable_interrupts);

void iwl_enable_interrupts(struct iwl_priv *priv)
{
1481
	IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1482 1483 1484 1485 1486
	set_bit(STATUS_INT_ENABLED, &priv->status);
	iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
}
EXPORT_SYMBOL(iwl_enable_interrupts);

A
Abhijeet Kolekar 已提交
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 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545
irqreturn_t iwl_isr(int irq, void *data)
{
	struct iwl_priv *priv = data;
	u32 inta, inta_mask;
	u32 inta_fh;
	if (!priv)
		return IRQ_NONE;

	spin_lock(&priv->lock);

	/* Disable (but don't clear!) interrupts here to avoid
	 *    back-to-back ISRs and sporadic interrupts from our NIC.
	 * If we have something to service, the tasklet will re-enable ints.
	 * If we *don't* have something, we'll re-enable before leaving here. */
	inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);

	/* Discover which interrupts are active/pending */
	inta = iwl_read32(priv, CSR_INT);
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);

	/* Ignore interrupt if there's nothing in NIC to service.
	 * This may be due to IRQ shared with another device,
	 * or due to sporadic interrupts thrown from our NIC. */
	if (!inta && !inta_fh) {
		IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
		goto none;
	}

	if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
		/* Hardware disappeared. It might have already raised
		 * an interrupt */
		IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
		goto unplugged;
	}

	IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
		      inta, inta_mask, inta_fh);

	inta &= ~CSR_INT_BIT_SCD;

	/* iwl_irq_tasklet() will service interrupts and re-enable them */
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);

 unplugged:
	spin_unlock(&priv->lock);
	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
	/* only Re-enable if diabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
		iwl_enable_interrupts(priv);
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}
EXPORT_SYMBOL(iwl_isr);

1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560
int iwl_send_bt_config(struct iwl_priv *priv)
{
	struct iwl_bt_cmd bt_cmd = {
		.flags = 3,
		.lead_time = 0xAA,
		.max_kill = 1,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

	return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
				sizeof(struct iwl_bt_cmd), &bt_cmd);
}
EXPORT_SYMBOL(iwl_send_bt_config);

1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
{
	u32 stat_flags = 0;
	struct iwl_host_cmd cmd = {
		.id = REPLY_STATISTICS_CMD,
		.meta.flags = flags,
		.len = sizeof(stat_flags),
		.data = (u8 *) &stat_flags,
	};
	return iwl_send_cmd(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_statistics_request);
1573

1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585
/**
 * 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;

1586
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1587 1588 1589 1590 1591 1592 1593 1594 1595 1596

	ret = iwl_grab_nic_access(priv);
	if (ret)
		return ret;

	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,
1597
			i + IWL49_RTC_INST_LOWER_BOUND);
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
		if (val != le32_to_cpu(*image)) {
			ret = -EIO;
			errcnt++;
			if (errcnt >= 3)
				break;
		}
	}

	iwl_release_nic_access(priv);

	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;

1624
	IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1625 1626 1627 1628 1629

	ret = iwl_grab_nic_access(priv);
	if (ret)
		return ret;

1630 1631
	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
			   IWL49_RTC_INST_LOWER_BOUND);
1632 1633 1634 1635 1636 1637 1638 1639

	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)) {
1640
			IWL_ERR(priv, "uCode INST section is invalid at "
1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652
				  "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;
		}
	}

	iwl_release_nic_access(priv);

	if (!errcnt)
1653 1654
		IWL_DEBUG_INFO(priv,
		    "ucode image in INSTRUCTION memory is good\n");
1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673

	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) {
1674
		IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1675 1676 1677 1678 1679 1680 1681 1682
		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) {
1683
		IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1684 1685 1686 1687 1688 1689 1690 1691
		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) {
1692
		IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1693 1694 1695
		return 0;
	}

1696
	IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708

	/* 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);

1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741

static const char *desc_lookup_text[] = {
	"OK",
	"FAIL",
	"BAD_PARAM",
	"BAD_CHECKSUM",
	"NMI_INTERRUPT_WDG",
	"SYSASSERT",
	"FATAL_ERROR",
	"BAD_COMMAND",
	"HW_ERROR_TUNE_LOCK",
	"HW_ERROR_TEMPERATURE",
	"ILLEGAL_CHAN_FREQ",
	"VCC_NOT_STABLE",
	"FH_ERROR",
	"NMI_INTERRUPT_HOST",
	"NMI_INTERRUPT_ACTION_PT",
	"NMI_INTERRUPT_UNKNOWN",
	"UCODE_VERSION_MISMATCH",
	"HW_ERROR_ABS_LOCK",
	"HW_ERROR_CAL_LOCK_FAIL",
	"NMI_INTERRUPT_INST_ACTION_PT",
	"NMI_INTERRUPT_DATA_ACTION_PT",
	"NMI_TRM_HW_ER",
	"NMI_INTERRUPT_TRM",
	"NMI_INTERRUPT_BREAK_POINT"
	"DEBUG_0",
	"DEBUG_1",
	"DEBUG_2",
	"DEBUG_3",
	"UNKNOWN"
};

1742 1743
static const char *desc_lookup(int i)
{
1744 1745 1746 1747
	int max = ARRAY_SIZE(desc_lookup_text) - 1;

	if (i < 0 || i > max)
		i = max;
1748

1749
	return desc_lookup_text[i];
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759
}

#define ERROR_START_OFFSET  (1 * sizeof(u32))
#define ERROR_ELEM_SIZE     (7 * sizeof(u32))

void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
	u32 data2, line;
	u32 desc, time, count, base, data1;
	u32 blink1, blink2, ilink1, ilink2;
1760
	int ret;
1761

1762 1763 1764 1765
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1766 1767

	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1768
		IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1769 1770 1771
		return;
	}

1772 1773
	ret = iwl_grab_nic_access(priv);
	if (ret) {
1774
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
1775 1776 1777 1778 1779 1780
		return;
	}

	count = iwl_read_targ_mem(priv, base);

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1781 1782 1783
		IWL_ERR(priv, "Start IWL Error Log Dump:\n");
		IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
			priv->status, count);
1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795
	}

	desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
	blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
	blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
	ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
	ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
	data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
	data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
	line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
	time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));

1796
	IWL_ERR(priv, "Desc                               Time       "
1797
		"data1      data2      line\n");
1798
	IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1799
		desc_lookup(desc), desc, time, data1, data2, line);
1800 1801
	IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
	IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1802 1803 1804 1805 1806 1807
		ilink1, ilink2);

	iwl_release_nic_access(priv);
}
EXPORT_SYMBOL(iwl_dump_nic_error_log);

1808 1809 1810 1811 1812
#define EVENT_START_OFFSET  (4 * sizeof(u32))

/**
 * iwl_print_event_log - Dump error event log to syslog
 *
1813
 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1814
 */
1815
static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1816 1817 1818 1819 1820 1821 1822 1823 1824 1825
				u32 num_events, u32 mode)
{
	u32 i;
	u32 base;       /* SRAM byte address of event log header */
	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */

	if (num_events == 0)
		return;
1826 1827 1828 1829
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844

	if (mode == 0)
		event_size = 2 * sizeof(u32);
	else
		event_size = 3 * sizeof(u32);

	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);

	/* "time" is actually "data" for mode 0 (no timestamp).
	* place event id # at far right for easier visual parsing. */
	for (i = 0; i < num_events; i++) {
		ev = iwl_read_targ_mem(priv, ptr);
		ptr += sizeof(u32);
		time = iwl_read_targ_mem(priv, ptr);
		ptr += sizeof(u32);
1845 1846
		if (mode == 0) {
			/* data, ev */
1847
			IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1848
		} else {
1849 1850
			data = iwl_read_targ_mem(priv, ptr);
			ptr += sizeof(u32);
1851
			IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1852
					time, data, ev);
1853 1854 1855 1856 1857 1858
		}
	}
}

void iwl_dump_nic_event_log(struct iwl_priv *priv)
{
1859
	int ret;
1860 1861 1862 1863 1864 1865 1866
	u32 base;       /* SRAM byte address of event log header */
	u32 capacity;   /* event log capacity in # entries */
	u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
	u32 num_wraps;  /* # times uCode wrapped to top of log */
	u32 next_entry; /* index of next entry to be written by uCode */
	u32 size;       /* # entries that we'll print */

1867 1868 1869 1870 1871
	if (priv->ucode_type == UCODE_INIT)
		base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
	else
		base = le32_to_cpu(priv->card_alive.log_event_table_ptr);

1872
	if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1873
		IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1874 1875 1876
		return;
	}

1877 1878
	ret = iwl_grab_nic_access(priv);
	if (ret) {
1879
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892
		return;
	}

	/* event log header */
	capacity = iwl_read_targ_mem(priv, base);
	mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
	num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
	next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
1893
		IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1894 1895 1896 1897
		iwl_release_nic_access(priv);
		return;
	}

1898
	IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912
			size, num_wraps);

	/* if uCode has wrapped back to top of log, start at the oldest entry,
	 * i.e the next one that uCode would fill. */
	if (num_wraps)
		iwl_print_event_log(priv, next_entry,
					capacity - next_entry, mode);
	/* (then/else) start at top of log */
	iwl_print_event_log(priv, 0, next_entry, mode);

	iwl_release_nic_access(priv);
}
EXPORT_SYMBOL(iwl_dump_nic_event_log);

1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925
void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
	spin_unlock_irqrestore(&priv->lock, flags);

	cmd.critical_temperature_R =
		cpu_to_le32(priv->hw_params.ct_kill_threshold);
1926

1927 1928 1929
	ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
			       sizeof(cmd), &cmd);
	if (ret)
1930
		IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1931
	else
1932
		IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1933 1934 1935 1936
			"critical temperature is %d\n",
			cmd.critical_temperature_R);
}
EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1937

1938

1939 1940 1941 1942 1943 1944 1945 1946 1947 1948
/*
 * 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.
 */
1949
int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959
{
	struct iwl_host_cmd cmd = {
		.id = REPLY_CARD_STATE_CMD,
		.len = sizeof(u32),
		.data = &flags,
		.meta.flags = meta_flag,
	};

	return iwl_send_cmd(priv, &cmd);
}
1960
EXPORT_SYMBOL(iwl_send_card_state);
1961 1962 1963 1964 1965 1966 1967 1968

void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
{
	unsigned long flags;

	if (test_bit(STATUS_RF_KILL_SW, &priv->status))
		return;

1969
	IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1970 1971 1972

	iwl_scan_cancel(priv);
	/* FIXME: This is a workaround for AP */
1973
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997
		spin_lock_irqsave(&priv->lock, flags);
		iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
			    CSR_UCODE_SW_BIT_RFKILL);
		spin_unlock_irqrestore(&priv->lock, flags);
		/* call the host command only if no hw rf-kill set */
		if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
		    iwl_is_ready(priv))
			iwl_send_card_state(priv,
				CARD_STATE_CMD_DISABLE, 0);
		set_bit(STATUS_RF_KILL_SW, &priv->status);
			/* make sure mac80211 stop sending Tx frame */
		if (priv->mac80211_registered)
			ieee80211_stop_queues(priv->hw);
	}
}
EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);

int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
{
	unsigned long flags;

	if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
		return 0;

1998
	IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
1999 2000 2001 2002

	spin_lock_irqsave(&priv->lock, flags);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);

2003 2004 2005 2006 2007 2008 2009 2010
	/* If the driver is up it will receive CARD_STATE_NOTIFICATION
	 * notification where it will clear SW rfkill status.
	 * Setting it here would break the handler. Only if the
	 * interface is down we can set here since we don't
	 * receive any further notification.
	 */
	if (!priv->is_open)
		clear_bit(STATUS_RF_KILL_SW, &priv->status);
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
	spin_unlock_irqrestore(&priv->lock, flags);

	/* wake up ucode */
	msleep(10);

	spin_lock_irqsave(&priv->lock, flags);
	iwl_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl_grab_nic_access(priv))
		iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->lock, flags);

	if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2023
		IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2024 2025 2026 2027
				  "disabled by HW switch\n");
		return 0;
	}

2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
	/* when driver is up while rfkill is on, it wont receive
	 * any CARD_STATE_NOTIFICATION notifications so we have to
	 * restart it in here
	 */
	if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
		clear_bit(STATUS_RF_KILL_SW, &priv->status);
		if (!iwl_is_rfkill(priv))
			queue_work(priv->workqueue, &priv->up);
	}

2038 2039 2040 2041
	/* If the driver is already loaded, it will receive
	 * CARD_STATE_NOTIFICATION notifications and the handler will
	 * call restart to reload the driver.
	 */
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	return 1;
}
EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
S
Samuel Ortiz 已提交
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void iwl_bg_rf_kill(struct work_struct *work)
{
	struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);

	wake_up_interruptible(&priv->wait_command_queue);

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	mutex_lock(&priv->mutex);

	if (!iwl_is_rfkill(priv)) {
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		IWL_DEBUG_RF_KILL(priv,
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Samuel Ortiz 已提交
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			  "HW and/or SW RF Kill no longer active, restarting "
			  "device\n");
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2062
		    priv->is_open)
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Samuel Ortiz 已提交
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			queue_work(priv->workqueue, &priv->restart);
	} else {
		/* make sure mac80211 stop sending Tx frame */
		if (priv->mac80211_registered)
			ieee80211_stop_queues(priv->hw);

		if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
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			IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
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Samuel Ortiz 已提交
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					  "disabled by SW switch\n");
		else
			IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
				    "Kill switch must be turned off for "
				    "wireless networking to work.\n");
	}
	mutex_unlock(&priv->mutex);
	iwl_rfkill_set_hw_state(priv);
}
EXPORT_SYMBOL(iwl_bg_rf_kill);
A
Abhijeet Kolekar 已提交
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void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
			   struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
	struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
	IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}
EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);

void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
				      struct iwl_rx_mem_buffer *rxb)
{
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
	IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
			"notification for %s:\n",
			le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
}
EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
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void iwl_rx_reply_error(struct iwl_priv *priv,
			struct iwl_rx_mem_buffer *rxb)
{
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;

	IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
		"seq 0x%04X ser 0x%08X\n",
		le32_to_cpu(pkt->u.err_resp.error_type),
		get_cmd_string(pkt->u.err_resp.cmd_id),
		pkt->u.err_resp.cmd_id,
		le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
		le32_to_cpu(pkt->u.err_resp.error_info));
}
EXPORT_SYMBOL(iwl_rx_reply_error);

A
Abhijeet Kolekar 已提交
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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);
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static void iwl_ht_conf(struct iwl_priv *priv,
			    struct ieee80211_bss_conf *bss_conf)
{
	struct ieee80211_sta_ht_cap *ht_conf;
	struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
	struct ieee80211_sta *sta;

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

	if (!iwl_conf->is_ht)
		return;


	/*
	 * It is totally wrong to base global information on something
	 * that is valid only when associated, alas, this driver works
	 * that way and I don't know how to fix it.
	 */

	rcu_read_lock();
	sta = ieee80211_find_sta(priv->hw, priv->bssid);
	if (!sta) {
		rcu_read_unlock();
		return;
	}
	ht_conf = &sta->ht_cap;

	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
		iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
		iwl_conf->sgf |= HT_SHORT_GI_40MHZ;

	iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
	iwl_conf->max_amsdu_size =
		!!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);

	iwl_conf->supported_chan_width =
		!!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);

	/*
	 * XXX: The HT configuration needs to be moved into iwl_mac_config()
	 *	to be done there correctly.
	 */

	iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
	if (conf_is_ht40_minus(&priv->hw->conf))
		iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
	else if (conf_is_ht40_plus(&priv->hw->conf))
		iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;

	/* If no above or below channel supplied disable FAT channel */
	if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
	    iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
		iwl_conf->supported_chan_width = 0;

	iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);

	memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);

	iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
	iwl_conf->ht_protection =
		bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
	iwl_conf->non_GF_STA_present =
		!!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);

	rcu_read_unlock();

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

#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
void iwl_bss_info_changed(struct ieee80211_hw *hw,
				     struct ieee80211_vif *vif,
				     struct ieee80211_bss_conf *bss_conf,
				     u32 changes)
{
	struct iwl_priv *priv = hw->priv;

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

	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
		IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
				   bss_conf->use_short_preamble);
		if (bss_conf->use_short_preamble)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	}

	if (changes & BSS_CHANGED_ERP_CTS_PROT) {
		IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
		if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
			priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
	}

	if (changes & BSS_CHANGED_HT) {
		iwl_ht_conf(priv, bss_conf);
2263 2264 2265

		if (priv->cfg->ops->hcmd->set_rxon_chain)
			priv->cfg->ops->hcmd->set_rxon_chain(priv);
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	}

	if (changes & BSS_CHANGED_ASSOC) {
		IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
		/* This should never happen as this function should
		 * never be called from interrupt context. */
		if (WARN_ON_ONCE(in_interrupt()))
			return;
		if (bss_conf->assoc) {
			priv->assoc_id = bss_conf->aid;
			priv->beacon_int = bss_conf->beacon_int;
			priv->power_data.dtim_period = bss_conf->dtim_period;
			priv->timestamp = bss_conf->timestamp;
			priv->assoc_capability = bss_conf->assoc_capability;

			/* we have just associated, don't start scan too early
			 * leave time for EAPOL exchange to complete
			 */
			priv->next_scan_jiffies = jiffies +
					IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
			mutex_lock(&priv->mutex);
			priv->cfg->ops->lib->post_associate(priv);
			mutex_unlock(&priv->mutex);
		} else {
			priv->assoc_id = 0;
			IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
		}
	} else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
			IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
			iwl_send_rxon_assoc(priv);
	}

}
EXPORT_SYMBOL(iwl_bss_info_changed);

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int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct iwl_priv *priv = hw->priv;
	unsigned long flags;
	__le64 timestamp;

	IWL_DEBUG_MAC80211(priv, "enter\n");

	if (!iwl_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
		return -EIO;
	}

	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
		IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
		return -EIO;
	}

	spin_lock_irqsave(&priv->lock, flags);

	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = skb;

	priv->assoc_id = 0;
	timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
	priv->timestamp = le64_to_cpu(timestamp);

	IWL_DEBUG_MAC80211(priv, "leave\n");
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_reset_qos(priv);

	priv->cfg->ops->lib->post_associate(priv);


	return 0;
}
EXPORT_SYMBOL(iwl_mac_beacon_update);

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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);

	priv->cfg->ops->smgmt->clear_station_table(priv);

	/* dont commit rxon if rf-kill is on*/
	if (!iwl_is_ready_rf(priv))
		return -EAGAIN;

	cancel_delayed_work(&priv->scan_check);
	if (iwl_scan_cancel_timeout(priv, 100)) {
		IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
		IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
		return -EAGAIN;
	}

	iwlcore_commit_rxon(priv);

	return 0;
}
EXPORT_SYMBOL(iwl_set_mode);

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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 */