iwl-agn.c 42.9 KB
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/******************************************************************************
 *
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 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
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 *
 * Portions of this file are derived from the ipw3945 project, as well
 * as portions of the ieee80211 subsystem header files.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
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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>
#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>

#include <net/mac80211.h>

#include <asm/div64.h>

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#include "iwl-ucode.h"
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#include "iwl-eeprom.h"
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#include "iwl-wifi.h"
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-agn-calib.h"
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#include "iwl-agn.h"
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#include "iwl-shared.h"
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#include "iwl-bus.h"
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#include "iwl-trans.h"
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#include "iwl-op-mode.h"
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/******************************************************************************
 *
 * module boiler plate
 *
 ******************************************************************************/

/*
 * module name, copyright, version, etc.
 */
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#define DRV_DESCRIPTION	"Intel(R) Wireless WiFi Link AGN driver for Linux"
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#ifdef CONFIG_IWLWIFI_DEBUG
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#define VD "d"
#else
#define VD
#endif

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#define DRV_VERSION     IWLWIFI_VERSION VD
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_VERSION(DRV_VERSION);
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MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("iwlagn");
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void iwl_update_chain_flags(struct iwl_priv *priv)
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{
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	struct iwl_rxon_context *ctx;
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	for_each_context(priv, ctx) {
		iwlagn_set_rxon_chain(priv, ctx);
		if (ctx->active.rx_chain != ctx->staging.rx_chain)
			iwlagn_commit_rxon(priv, ctx);
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	}
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}

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/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
static void iwl_set_beacon_tim(struct iwl_priv *priv,
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			       struct iwl_tx_beacon_cmd *tx_beacon_cmd,
			       u8 *beacon, u32 frame_size)
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{
	u16 tim_idx;
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;

	/*
	 * The index is relative to frame start but we start looking at the
	 * variable-length part of the beacon.
	 */
	tim_idx = mgmt->u.beacon.variable - beacon;

	/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
	while ((tim_idx < (frame_size - 2)) &&
			(beacon[tim_idx] != WLAN_EID_TIM))
		tim_idx += beacon[tim_idx+1] + 2;

	/* If TIM field was found, set variables */
	if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
		tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
		tx_beacon_cmd->tim_size = beacon[tim_idx+1];
	} else
		IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
}

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int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
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{
	struct iwl_tx_beacon_cmd *tx_beacon_cmd;
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	struct iwl_host_cmd cmd = {
		.id = REPLY_TX_BEACON,
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		.flags = CMD_SYNC,
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	};
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	struct ieee80211_tx_info *info;
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	u32 frame_size;
	u32 rate_flags;
	u32 rate;
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	/*
	 * We have to set up the TX command, the TX Beacon command, and the
	 * beacon contents.
	 */
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	lockdep_assert_held(&priv->shrd->mutex);
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	if (!priv->beacon_ctx) {
		IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
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		return 0;
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	}

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	if (WARN_ON(!priv->beacon_skb))
		return -EINVAL;

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	/* Allocate beacon command */
	if (!priv->beacon_cmd)
		priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
	tx_beacon_cmd = priv->beacon_cmd;
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	if (!tx_beacon_cmd)
		return -ENOMEM;

	frame_size = priv->beacon_skb->len;
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	/* Set up TX command fields */
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	tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
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	tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
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	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
	tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
		TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
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	/* Set up TX beacon command fields */
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	iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
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			   frame_size);
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	/* Set up packet rate and flags */
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	info = IEEE80211_SKB_CB(priv->beacon_skb);

	/*
	 * Let's set up the rate at least somewhat correctly;
	 * it will currently not actually be used by the uCode,
	 * it uses the broadcast station's rate instead.
	 */
	if (info->control.rates[0].idx < 0 ||
	    info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
		rate = 0;
	else
		rate = info->control.rates[0].idx;

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	priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
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					      hw_params(priv).valid_tx_ant);
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	rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
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	/* In mac80211, rates for 5 GHz start at 0 */
	if (info->band == IEEE80211_BAND_5GHZ)
		rate += IWL_FIRST_OFDM_RATE;
	else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
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		rate_flags |= RATE_MCS_CCK_MSK;
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	tx_beacon_cmd->tx.rate_n_flags =
			iwl_hw_set_rate_n_flags(rate, rate_flags);
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	/* Submit command */
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	cmd.len[0] = sizeof(*tx_beacon_cmd);
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	cmd.data[0] = tx_beacon_cmd;
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	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
	cmd.len[1] = frame_size;
	cmd.data[1] = priv->beacon_skb->data;
	cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
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	return iwl_trans_send_cmd(trans(priv), &cmd);
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}

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static void iwl_bg_beacon_update(struct work_struct *work)
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{
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	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, beacon_update);
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	struct sk_buff *beacon;

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	mutex_lock(&priv->shrd->mutex);
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	if (!priv->beacon_ctx) {
		IWL_ERR(priv, "updating beacon w/o beacon context!\n");
		goto out;
	}
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	if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
		/*
		 * The ucode will send beacon notifications even in
		 * IBSS mode, but we don't want to process them. But
		 * we need to defer the type check to here due to
		 * requiring locking around the beacon_ctx access.
		 */
		goto out;
	}

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	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
	beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
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	if (!beacon) {
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		IWL_ERR(priv, "update beacon failed -- keeping old\n");
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		goto out;
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	}

	/* new beacon skb is allocated every time; dispose previous.*/
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	dev_kfree_skb(priv->beacon_skb);
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	priv->beacon_skb = beacon;
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	iwlagn_send_beacon_cmd(priv);
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 out:
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	mutex_unlock(&priv->shrd->mutex);
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}

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static void iwl_bg_bt_runtime_config(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, bt_runtime_config);

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

	/* dont send host command if rf-kill is on */
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	if (!iwl_is_ready_rf(priv->shrd))
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		return;
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	iwlagn_send_advance_bt_config(priv);
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}

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static void iwl_bg_bt_full_concurrency(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, bt_full_concurrency);
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	struct iwl_rxon_context *ctx;
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	mutex_lock(&priv->shrd->mutex);
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	if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
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		goto out;
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	/* dont send host command if rf-kill is on */
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	if (!iwl_is_ready_rf(priv->shrd))
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		goto out;
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	IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
		       priv->bt_full_concurrent ?
		       "full concurrency" : "3-wire");

	/*
	 * LQ & RXON updated cmds must be sent before BT Config cmd
	 * to avoid 3-wire collisions
	 */
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	for_each_context(priv, ctx) {
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		iwlagn_set_rxon_chain(priv, ctx);
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		iwlagn_commit_rxon(priv, ctx);
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	}
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	iwlagn_send_advance_bt_config(priv);
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out:
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	mutex_unlock(&priv->shrd->mutex);
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}

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/**
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 * iwl_bg_statistics_periodic - Timer callback to queue statistics
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 *
 * This callback is provided in order to send a statistics request.
 *
 * This timer function is continually reset to execute within
 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 * was received.  We need to ensure we receive the statistics in order
 * to update the temperature used for calibrating the TXPOWER.
 */
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static void iwl_bg_statistics_periodic(unsigned long data)
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{
	struct iwl_priv *priv = (struct iwl_priv *)data;

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

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	/* dont send host command if rf-kill is on */
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	if (!iwl_is_ready_rf(priv->shrd))
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		return;

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	iwl_send_statistics_request(priv, CMD_ASYNC, false);
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}

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static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
					u32 start_idx, u32 num_events,
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					u32 capacity, u32 mode)
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{
	u32 i;
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */
	unsigned long reg_flags;

	if (mode == 0)
		ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
	else
		ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));

	/* Make sure device is powered up for SRAM reads */
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	spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
	if (iwl_grab_nic_access(trans(priv))) {
		spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
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		return;
	}

	/* Set starting address; reads will auto-increment */
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	iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
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	rmb();

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	/*
	 * Refuse to read more than would have fit into the log from
	 * the current start_idx. This used to happen due to the race
	 * described below, but now WARN because the code below should
	 * prevent it from happening here.
	 */
	if (WARN_ON(num_events > capacity - start_idx))
		num_events = capacity - start_idx;

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	/*
	 * "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++) {
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		ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
		time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
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		if (mode == 0) {
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			trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev);
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		} else {
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			data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
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			trace_iwlwifi_dev_ucode_cont_event(priv, time,
							   data, ev);
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		}
	}
	/* Allow device to power down */
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	iwl_release_nic_access(trans(priv));
	spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
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}

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static void iwl_continuous_event_trace(struct iwl_priv *priv)
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{
	u32 capacity;   /* event log capacity in # entries */
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	struct {
		u32 capacity;
		u32 mode;
		u32 wrap_counter;
		u32 write_counter;
	} __packed read;
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	u32 base;       /* SRAM byte address of event log header */
	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 */

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	base = priv->shrd->device_pointers.log_event_table;
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	if (iwlagn_hw_valid_rtc_data_addr(base)) {
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		iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
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		capacity = read.capacity;
		mode = read.mode;
		num_wraps = read.wrap_counter;
		next_entry = read.write_counter;
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	} else
		return;

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	/*
	 * Unfortunately, the uCode doesn't use temporary variables.
	 * Therefore, it can happen that we read next_entry == capacity,
	 * which really means next_entry == 0.
	 */
	if (unlikely(next_entry == capacity))
		next_entry = 0;
	/*
	 * Additionally, the uCode increases the write pointer before
	 * the wraps counter, so if the write pointer is smaller than
	 * the old write pointer (wrap occurred) but we read that no
	 * wrap occurred, we actually read between the next_entry and
	 * num_wraps update (this does happen in practice!!) -- take
	 * that into account by increasing num_wraps.
	 */
	if (unlikely(next_entry < priv->event_log.next_entry &&
		     num_wraps == priv->event_log.num_wraps))
		num_wraps++;

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	if (num_wraps == priv->event_log.num_wraps) {
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		iwl_print_cont_event_trace(
			priv, base, priv->event_log.next_entry,
			next_entry - priv->event_log.next_entry,
			capacity, mode);

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		priv->event_log.non_wraps_count++;
	} else {
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		if (num_wraps - priv->event_log.num_wraps > 1)
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			priv->event_log.wraps_more_count++;
		else
			priv->event_log.wraps_once_count++;
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		trace_iwlwifi_dev_ucode_wrap_event(priv,
				num_wraps - priv->event_log.num_wraps,
				next_entry, priv->event_log.next_entry);
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		if (next_entry < priv->event_log.next_entry) {
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			iwl_print_cont_event_trace(
				priv, base, priv->event_log.next_entry,
				capacity - priv->event_log.next_entry,
				capacity, mode);
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			iwl_print_cont_event_trace(
				priv, base, 0, next_entry, capacity, mode);
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		} else {
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			iwl_print_cont_event_trace(
				priv, base, next_entry,
				capacity - next_entry,
				capacity, mode);
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			iwl_print_cont_event_trace(
				priv, base, 0, next_entry, capacity, mode);
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		}
	}
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	priv->event_log.num_wraps = num_wraps;
	priv->event_log.next_entry = next_entry;
}

/**
 * iwl_bg_ucode_trace - Timer callback to log ucode event
 *
 * The timer is continually set to execute every
 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 * this function is to perform continuous uCode event logging operation
 * if enabled
 */
static void iwl_bg_ucode_trace(unsigned long data)
{
	struct iwl_priv *priv = (struct iwl_priv *)data;

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

	if (priv->event_log.ucode_trace) {
		iwl_continuous_event_trace(priv);
		/* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
		mod_timer(&priv->ucode_trace,
			 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
	}
}

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static void iwl_bg_tx_flush(struct work_struct *work)
{
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, tx_flush);

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

	/* do nothing if rf-kill is on */
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	if (!iwl_is_ready_rf(priv->shrd))
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		return;

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	IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
	iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
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}

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void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
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{
	int i;

	/*
	 * The default context is always valid,
	 * the PAN context depends on uCode.
	 */
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	priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
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	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
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		priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
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	for (i = 0; i < NUM_IWL_RXON_CTX; i++)
		priv->contexts[i].ctxid = i;

	priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
	priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
	priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
	priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
	priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
	priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
	priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
	priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
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	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
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	priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
		BIT(NL80211_IFTYPE_ADHOC);
	priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
		BIT(NL80211_IFTYPE_STATION);
	priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
	priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
	priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
	priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;

	priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
	priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
		REPLY_WIPAN_RXON_TIMING;
	priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
		REPLY_WIPAN_RXON_ASSOC;
	priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
	priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
	priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
	priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
	priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
	priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
539 540 541 542 543 544

	if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
		priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);

545 546 547 548 549 550 551
	priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
	priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
	priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;

	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
}

552 553 554 555 556 557 558
static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
{
	struct iwl_ct_kill_config cmd;
	struct iwl_ct_kill_throttling_config adv_cmd;
	unsigned long flags;
	int ret = 0;

559
	spin_lock_irqsave(&priv->shrd->lock, flags);
560
	iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
561
		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
562
	spin_unlock_irqrestore(&priv->shrd->lock, flags);
563 564
	priv->thermal_throttle.ct_kill_toggle = false;

565
	if (cfg(priv)->base_params->support_ct_kill_exit) {
566
		adv_cmd.critical_temperature_enter =
567
			cpu_to_le32(hw_params(priv).ct_kill_threshold);
568
		adv_cmd.critical_temperature_exit =
569
			cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
570

571
		ret = iwl_trans_send_cmd_pdu(trans(priv),
572 573
				       REPLY_CT_KILL_CONFIG_CMD,
				       CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
574 575 576 577
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
578 579 580 581
				"succeeded, critical temperature enter is %d,"
				"exit is %d\n",
				hw_params(priv).ct_kill_threshold,
				hw_params(priv).ct_kill_exit_threshold);
582 583
	} else {
		cmd.critical_temperature_R =
584
			cpu_to_le32(hw_params(priv).ct_kill_threshold);
585

586
		ret = iwl_trans_send_cmd_pdu(trans(priv),
587 588
				       REPLY_CT_KILL_CONFIG_CMD,
				       CMD_SYNC, sizeof(cmd), &cmd);
589 590 591 592
		if (ret)
			IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
		else
			IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
593 594 595
				"succeeded, "
				"critical temperature is %d\n",
				hw_params(priv).ct_kill_threshold);
596 597 598
	}
}

599 600 601 602 603
static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
{
	struct iwl_calib_cfg_cmd calib_cfg_cmd;
	struct iwl_host_cmd cmd = {
		.id = CALIBRATION_CFG_CMD,
604 605
		.len = { sizeof(struct iwl_calib_cfg_cmd), },
		.data = { &calib_cfg_cmd, },
606 607 608
	};

	memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
609
	calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
610
	calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
611

612
	return iwl_trans_send_cmd(trans(priv), &cmd);
613 614 615
}


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static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
{
	struct iwl_tx_ant_config_cmd tx_ant_cmd = {
	  .valid = cpu_to_le32(valid_tx_ant),
	};

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	if (IWL_UCODE_API(nic(priv)->fw.ucode_ver) > 1) {
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		IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
624
		return iwl_trans_send_cmd_pdu(trans(priv),
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					TX_ANT_CONFIGURATION_CMD,
					CMD_SYNC,
					sizeof(struct iwl_tx_ant_config_cmd),
					&tx_ant_cmd);
	} else {
		IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
		return -EOPNOTSUPP;
	}
}

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/**
636
 * iwl_alive_start - called after REPLY_ALIVE notification received
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637
 *                   from protocol/runtime uCode (initialization uCode's
638
 *                   Alive gets handled by iwl_init_alive_start()).
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639
 */
640
int iwl_alive_start(struct iwl_priv *priv)
Z
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641
{
642
	int ret = 0;
643
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
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644

645
	IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
646

647
	/* After the ALIVE response, we can send host commands to the uCode */
648
	set_bit(STATUS_ALIVE, &priv->shrd->status);
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649

650 651
	/* Enable watchdog to monitor the driver tx queues */
	iwl_setup_watchdog(priv);
652

653
	if (iwl_is_rfkill(priv->shrd))
654
		return -ERFKILL;
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655

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656 657 658 659 660
	if (priv->event_log.ucode_trace) {
		/* start collecting data now */
		mod_timer(&priv->ucode_trace, jiffies);
	}

661
	/* download priority table before any calibration request */
662 663
	if (cfg(priv)->bt_params &&
	    cfg(priv)->bt_params->advanced_bt_coexist) {
664
		/* Configure Bluetooth device coexistence support */
665
		if (cfg(priv)->bt_params->bt_sco_disable)
666 667 668 669
			priv->bt_enable_pspoll = false;
		else
			priv->bt_enable_pspoll = true;

670 671 672
		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
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		iwlagn_send_advance_bt_config(priv);
674
		priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
675 676
		priv->cur_rssi_ctx = NULL;

677
		iwl_send_prio_tbl(trans(priv));
678 679

		/* FIXME: w/a to force change uCode BT state machine */
680
		ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
681 682 683
					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
		if (ret)
			return ret;
684
		ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
685 686 687
					 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
		if (ret)
			return ret;
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	} else {
		/*
		 * default is 2-wire BT coexexistence support
		 */
		iwl_send_bt_config(priv);
693
	}
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695 696 697 698
	/*
	 * Perform runtime calibrations, including DC calibration.
	 */
	iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
699

700
	ieee80211_wake_queues(priv->hw);
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701

702
	priv->active_rate = IWL_RATES_MASK;
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703

704
	/* Configure Tx antenna selection based on H/W config */
705
	iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
706

707
	if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
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Gregory Greenman 已提交
708
		struct iwl_rxon_cmd *active_rxon =
709
				(struct iwl_rxon_cmd *)&ctx->active;
710
		/* apply any changes in staging */
711
		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
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		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	} else {
714
		struct iwl_rxon_context *tmp;
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		/* Initialize our rx_config data */
716 717
		for_each_context(priv, tmp)
			iwl_connection_init_rx_config(priv, tmp);
718

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719
		iwlagn_set_rxon_chain(priv, ctx);
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720 721
	}

722
	if (!priv->shrd->wowlan) {
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		/* WoWLAN ucode will not reply in the same way, skip it */
		iwl_reset_run_time_calib(priv);
	}
726

727
	set_bit(STATUS_READY, &priv->shrd->status);
728

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	/* Configure the adapter for unassociated operation */
730
	ret = iwlagn_commit_rxon(priv, ctx);
731 732
	if (ret)
		return ret;
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733 734

	/* At this point, the NIC is initialized and operational */
735
	iwl_rf_kill_ct_config(priv);
736

737
	IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
738

739
	return iwl_power_update_mode(priv, true);
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740 741
}

742
void iwl_down(struct iwl_priv *priv)
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743
{
744
	int exit_pending;
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745

746
	IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Z
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747

748 749
	lockdep_assert_held(&priv->shrd->mutex);

750 751
	iwl_scan_cancel_timeout(priv, 200);

752 753 754 755 756 757 758
	/*
	 * If active, scanning won't cancel it, so say it expired.
	 * No race since we hold the mutex here and a new one
	 * can't come in at this time.
	 */
	ieee80211_remain_on_channel_expired(priv->hw);

759 760
	exit_pending =
		test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
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761

762 763
	/* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
	 * to prevent rearm timer */
764
	del_timer_sync(&priv->watchdog);
765

766
	iwl_clear_ucode_stations(priv, NULL);
767
	iwl_dealloc_bcast_stations(priv);
768
	iwl_clear_driver_stations(priv);
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Zhu Yi 已提交
769

770
	/* reset BT coex data */
771
	priv->bt_status = 0;
772 773
	priv->cur_rssi_ctx = NULL;
	priv->bt_is_sco = 0;
774
	if (cfg(priv)->bt_params)
775
		priv->bt_traffic_load =
776
			 cfg(priv)->bt_params->bt_init_traffic_load;
777 778
	else
		priv->bt_traffic_load = 0;
779 780
	priv->bt_full_concurrent = false;
	priv->bt_ci_compliance = 0;
781

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782 783 784
	/* Wipe out the EXIT_PENDING status bit if we are not actually
	 * exiting the module */
	if (!exit_pending)
785
		clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
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786

787
	if (priv->mac80211_registered)
Z
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788 789
		ieee80211_stop_queues(priv->hw);

790 791
	iwl_trans_stop_device(trans(priv));

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Johannes Berg 已提交
792
	/* Clear out all status bits but a few that are stable across reset */
793 794
	priv->shrd->status &=
			test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
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Zhu Yi 已提交
795
				STATUS_RF_KILL_HW |
796
			test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
797
				STATUS_GEO_CONFIGURED |
798
			test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
799
				STATUS_FW_ERROR |
800
			test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
801
				STATUS_EXIT_PENDING;
Z
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802

803
	dev_kfree_skb(priv->beacon_skb);
804
	priv->beacon_skb = NULL;
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805 806 807 808 809 810 811 812
}

/*****************************************************************************
 *
 * Workqueue callbacks
 *
 *****************************************************************************/

813 814 815 816 817
static void iwl_bg_run_time_calib_work(struct work_struct *work)
{
	struct iwl_priv *priv = container_of(work, struct iwl_priv,
			run_time_calib_work);

818
	mutex_lock(&priv->shrd->mutex);
819

820 821
	if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
	    test_bit(STATUS_SCANNING, &priv->shrd->status)) {
822
		mutex_unlock(&priv->shrd->mutex);
823 824 825 826
		return;
	}

	if (priv->start_calib) {
827 828
		iwl_chain_noise_calibration(priv);
		iwl_sensitivity_calibration(priv);
829 830
	}

831
	mutex_unlock(&priv->shrd->mutex);
832 833
}

834
void iwlagn_prepare_restart(struct iwl_priv *priv)
J
Johannes Berg 已提交
835 836 837 838 839 840
{
	struct iwl_rxon_context *ctx;
	bool bt_full_concurrent;
	u8 bt_ci_compliance;
	u8 bt_load;
	u8 bt_status;
841
	bool bt_is_sco;
J
Johannes Berg 已提交
842

843
	lockdep_assert_held(&priv->shrd->mutex);
J
Johannes Berg 已提交
844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861

	for_each_context(priv, ctx)
		ctx->vif = NULL;
	priv->is_open = 0;

	/*
	 * __iwl_down() will clear the BT status variables,
	 * which is correct, but when we restart we really
	 * want to keep them so restore them afterwards.
	 *
	 * The restart process will later pick them up and
	 * re-configure the hw when we reconfigure the BT
	 * command.
	 */
	bt_full_concurrent = priv->bt_full_concurrent;
	bt_ci_compliance = priv->bt_ci_compliance;
	bt_load = priv->bt_traffic_load;
	bt_status = priv->bt_status;
862
	bt_is_sco = priv->bt_is_sco;
J
Johannes Berg 已提交
863

864
	iwl_down(priv);
J
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865 866 867 868 869

	priv->bt_full_concurrent = bt_full_concurrent;
	priv->bt_ci_compliance = bt_ci_compliance;
	priv->bt_traffic_load = bt_load;
	priv->bt_status = bt_status;
870
	priv->bt_is_sco = bt_is_sco;
J
Johannes Berg 已提交
871 872
}

873
static void iwl_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
874
{
875
	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Z
Zhu Yi 已提交
876

877
	if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
Z
Zhu Yi 已提交
878 879
		return;

880
	if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
881
		mutex_lock(&priv->shrd->mutex);
J
Johannes Berg 已提交
882
		iwlagn_prepare_restart(priv);
883
		mutex_unlock(&priv->shrd->mutex);
884
		iwl_cancel_deferred_work(priv);
J
Johannes Berg 已提交
885 886
		ieee80211_restart_hw(priv->hw);
	} else {
887
		WARN_ON(1);
J
Johannes Berg 已提交
888
	}
Z
Zhu Yi 已提交
889 890
}

891 892 893



894
void iwlagn_disable_roc(struct iwl_priv *priv)
895
{
896
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
897

898
	lockdep_assert_held(&priv->shrd->mutex);
899

900 901
	if (!priv->hw_roc_setup)
		return;
902

903 904
	ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
	ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
905

906
	priv->hw_roc_channel = NULL;
907

908
	memset(ctx->staging.node_addr, 0, ETH_ALEN);
909

910
	iwlagn_commit_rxon(priv, ctx);
911

912 913
	ctx->is_active = false;
	priv->hw_roc_setup = false;
914 915
}

916
static void iwlagn_disable_roc_work(struct work_struct *work)
Z
Zhu Yi 已提交
917
{
918 919
	struct iwl_priv *priv = container_of(work, struct iwl_priv,
					     hw_roc_disable_work.work);
Z
Zhu Yi 已提交
920

921
	mutex_lock(&priv->shrd->mutex);
922
	iwlagn_disable_roc(priv);
923
	mutex_unlock(&priv->shrd->mutex);
Z
Zhu Yi 已提交
924 925
}

926 927 928 929 930 931 932
/*****************************************************************************
 *
 * driver setup and teardown
 *
 *****************************************************************************/

static void iwl_setup_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
933
{
J
Johannes Berg 已提交
934
	priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Z
Zhu Yi 已提交
935

936
	init_waitqueue_head(&priv->shrd->wait_command_queue);
M
Mohamed Abbas 已提交
937

938 939 940 941 942 943 944 945
	INIT_WORK(&priv->restart, iwl_bg_restart);
	INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
	INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
	INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
	INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
	INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
	INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
			  iwlagn_disable_roc_work);
946

947
	iwl_setup_scan_deferred_work(priv);
948

949 950
	if (cfg(priv)->lib->bt_setup_deferred_work)
		cfg(priv)->lib->bt_setup_deferred_work(priv);
951

952 953 954
	init_timer(&priv->statistics_periodic);
	priv->statistics_periodic.data = (unsigned long)priv;
	priv->statistics_periodic.function = iwl_bg_statistics_periodic;
955

956 957 958
	init_timer(&priv->ucode_trace);
	priv->ucode_trace.data = (unsigned long)priv;
	priv->ucode_trace.function = iwl_bg_ucode_trace;
M
Mohamed Abbas 已提交
959

960 961 962
	init_timer(&priv->watchdog);
	priv->watchdog.data = (unsigned long)priv;
	priv->watchdog.function = iwl_bg_watchdog;
Z
Zhu Yi 已提交
963 964
}

965
void iwl_cancel_deferred_work(struct iwl_priv *priv)
J
Johannes Berg 已提交
966
{
967 968
	if (cfg(priv)->lib->cancel_deferred_work)
		cfg(priv)->lib->cancel_deferred_work(priv);
J
Johannes Berg 已提交
969

970 971
	cancel_work_sync(&priv->run_time_calib_work);
	cancel_work_sync(&priv->beacon_update);
J
Johannes Berg 已提交
972

973
	iwl_cancel_scan_deferred_work(priv);
J
Johannes Berg 已提交
974

975 976 977
	cancel_work_sync(&priv->bt_full_concurrency);
	cancel_work_sync(&priv->bt_runtime_config);
	cancel_delayed_work_sync(&priv->hw_roc_disable_work);
J
Johannes Berg 已提交
978

979 980 981
	del_timer_sync(&priv->statistics_periodic);
	del_timer_sync(&priv->ucode_trace);
}
J
Johannes Berg 已提交
982

983 984 985 986
static void iwl_init_hw_rates(struct iwl_priv *priv,
			      struct ieee80211_rate *rates)
{
	int i;
J
Johannes Berg 已提交
987

988 989 990 991 992 993 994 995 996 997 998 999 1000
	for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
		rates[i].bitrate = iwl_rates[i].ieee * 5;
		rates[i].hw_value = i; /* Rate scaling will work on indexes */
		rates[i].hw_value_short = i;
		rates[i].flags = 0;
		if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
			/*
			 * If CCK != 1M then set short preamble rate flag.
			 */
			rates[i].flags |=
				(iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
					0 : IEEE80211_RATE_SHORT_PREAMBLE;
		}
J
Johannes Berg 已提交
1001 1002 1003
	}
}

1004
static int iwl_init_drv(struct iwl_priv *priv)
J
Johannes Berg 已提交
1005
{
1006
	int ret;
J
Johannes Berg 已提交
1007

1008
	spin_lock_init(&priv->shrd->sta_lock);
J
Johannes Berg 已提交
1009

1010
	mutex_init(&priv->shrd->mutex);
J
Johannes Berg 已提交
1011

1012
	INIT_LIST_HEAD(&trans(priv)->calib_results);
1013

1014 1015 1016
	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
	priv->band = IEEE80211_BAND_2GHZ;
J
Johannes Berg 已提交
1017

1018 1019 1020 1021
	priv->iw_mode = NL80211_IFTYPE_STATION;
	priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
	priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
	priv->agg_tids_count = 0;
J
Johannes Berg 已提交
1022

1023 1024 1025 1026 1027
	/* initialize force reset */
	priv->force_reset[IWL_RF_RESET].reset_duration =
		IWL_DELAY_NEXT_FORCE_RF_RESET;
	priv->force_reset[IWL_FW_RESET].reset_duration =
		IWL_DELAY_NEXT_FORCE_FW_RELOAD;
J
Johannes Berg 已提交
1028

1029
	priv->rx_statistics_jiffies = jiffies;
J
Johannes Berg 已提交
1030

1031 1032
	/* Choose which receivers/antennas to use */
	iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
J
Johannes Berg 已提交
1033

1034
	iwl_init_scan_params(priv);
J
Johannes Berg 已提交
1035

1036
	/* init bt coex */
1037 1038
	if (cfg(priv)->bt_params &&
	    cfg(priv)->bt_params->advanced_bt_coexist) {
1039 1040 1041 1042 1043 1044 1045
		priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
		priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
		priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
		priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
		priv->bt_duration = BT_DURATION_LIMIT_DEF;
		priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
	}
J
Johannes Berg 已提交
1046

1047
	ret = iwl_init_channel_map(priv);
J
Johannes Berg 已提交
1048
	if (ret) {
1049 1050
		IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
		goto err;
J
Johannes Berg 已提交
1051 1052
	}

1053 1054 1055 1056 1057 1058
	ret = iwl_init_geos(priv);
	if (ret) {
		IWL_ERR(priv, "initializing geos failed: %d\n", ret);
		goto err_free_channel_map;
	}
	iwl_init_hw_rates(priv, priv->ieee_rates);
J
Johannes Berg 已提交
1059

1060
	return 0;
J
Johannes Berg 已提交
1061

1062 1063 1064 1065 1066
err_free_channel_map:
	iwl_free_channel_map(priv);
err:
	return ret;
}
J
Johannes Berg 已提交
1067

1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
static void iwl_uninit_drv(struct iwl_priv *priv)
{
	iwl_free_geos(priv);
	iwl_free_channel_map(priv);
	if (priv->tx_cmd_pool)
		kmem_cache_destroy(priv->tx_cmd_pool);
	kfree(priv->scan_cmd);
	kfree(priv->beacon_cmd);
	kfree(rcu_dereference_raw(priv->noa_data));
#ifdef CONFIG_IWLWIFI_DEBUGFS
	kfree(priv->wowlan_sram);
#endif
}
J
Johannes Berg 已提交
1081

1082 1083 1084
/* Size of one Rx buffer in host DRAM */
#define IWL_RX_BUF_SIZE_4K (4 * 1024)
#define IWL_RX_BUF_SIZE_8K (8 * 1024)
1085

1086
static void iwl_set_hw_params(struct iwl_priv *priv)
1087
{
D
Don Fry 已提交
1088
	if (iwlagn_mod_params.amsdu_size_8K)
1089 1090
		hw_params(priv).rx_page_order =
			get_order(IWL_RX_BUF_SIZE_8K);
1091
	else
1092 1093
		hw_params(priv).rx_page_order =
			get_order(IWL_RX_BUF_SIZE_4K);
1094

J
Johannes Berg 已提交
1095
	if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1096
		cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1097

1098
	hw_params(priv).num_ampdu_queues =
1099
		cfg(priv)->base_params->num_of_ampdu_queues;
1100
	hw_params(priv).shadow_reg_enable =
1101 1102 1103
		cfg(priv)->base_params->shadow_reg_enable;
	hw_params(priv).sku = cfg(priv)->sku;
	hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1104

1105
	/* Device-specific setup */
1106
	cfg(priv)->lib->set_hw_params(priv);
1107 1108
}

1109 1110


1111 1112
static void iwl_debug_config(struct iwl_priv *priv)
{
1113
	dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1114 1115 1116 1117 1118
#ifdef CONFIG_IWLWIFI_DEBUG
		"enabled\n");
#else
		"disabled\n");
#endif
1119
	dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1120 1121 1122 1123 1124
#ifdef CONFIG_IWLWIFI_DEBUGFS
		"enabled\n");
#else
		"disabled\n");
#endif
1125
	dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1126 1127 1128 1129 1130 1131
#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
		"enabled\n");
#else
		"disabled\n");
#endif

1132
	dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1133
#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1134 1135 1136
		"enabled\n");
#else
		"disabled\n");
1137
#endif
1138
	dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1139 1140 1141 1142
#ifdef CONFIG_IWLWIFI_P2P
		"enabled\n");
#else
		"disabled\n");
1143 1144 1145
#endif
}

1146
static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans)
1147
{
1148
	struct iwl_fw *fw = &nic(trans)->fw;
1149 1150 1151
	int err = 0;
	struct iwl_priv *priv;
	struct ieee80211_hw *hw;
1152
	struct iwl_op_mode *op_mode;
1153
	u16 num_mac;
1154
	u32 ucode_flags;
1155 1156 1157 1158

	/************************
	 * 1. Allocating HW data
	 ************************/
D
Don Fry 已提交
1159
	hw = iwl_alloc_all();
1160
	if (!hw) {
1161 1162
		pr_err("%s: Cannot allocate network device\n",
				cfg(trans)->name);
1163
		err = -ENOMEM;
1164 1165 1166
		goto out;
	}

1167 1168 1169 1170
	op_mode = hw->priv;
	op_mode->ops = &iwl_dvm_ops;
	priv = IWL_OP_MODE_GET_DVM(op_mode);
	priv->shrd = trans->shrd;
1171
	priv->shrd->priv = priv;
1172

1173 1174
	iwl_trans_configure(trans(priv), op_mode);

1175
	/* At this point both hw and priv are allocated. */
1176

1177
	SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
Z
Zhu Yi 已提交
1178

D
Don Fry 已提交
1179
	/* show what debugging capabilities we have */
1180 1181
	iwl_debug_config(priv);

1182
	IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1183

1184 1185
	/* is antenna coupling more than 35dB ? */
	priv->bt_ant_couple_ok =
1186 1187 1188
		(iwlagn_mod_params.ant_coupling >
			IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
			true : false;
1189

1190
	/* enable/disable bt channel inhibition */
1191
	priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1192 1193
	IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
		       (priv->bt_ch_announce) ? "On" : "Off");
1194

1195 1196
	if (iwl_alloc_traffic_mem(priv))
		IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Z
Zhu Yi 已提交
1197

1198
	/* these spin locks will be used in apm_ops.init and EEPROM access
M
Mohamed Abbas 已提交
1199 1200
	 * we should init now
	 */
1201
	spin_lock_init(&trans(priv)->reg_lock);
1202
	spin_lock_init(&priv->shrd->lock);
1203

1204 1205 1206
	/***********************
	 * 3. Read REV register
	 ***********************/
1207
	IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1208
		cfg(priv)->name, trans(priv)->hw_rev);
1209

1210
	err = iwl_trans_start_hw(trans(priv));
1211
	if (err)
1212
		goto out_free_traffic_mem;
1213

T
Tomas Winkler 已提交
1214 1215 1216
	/*****************
	 * 4. Read EEPROM
	 *****************/
1217
	/* Read the EEPROM */
1218
	err = iwl_eeprom_init(priv, trans(priv)->hw_rev);
1219
	/* Reset chip to save power until we load uCode during "up". */
1220
	iwl_trans_stop_hw(trans(priv));
1221
	if (err) {
1222
		IWL_ERR(priv, "Unable to init EEPROM\n");
1223
		goto out_free_traffic_mem;
1224
	}
1225 1226
	err = iwl_eeprom_check_version(priv);
	if (err)
1227
		goto out_free_eeprom;
1228

1229 1230 1231 1232
	err = iwl_eeprom_check_sku(priv);
	if (err)
		goto out_free_eeprom;

1233
	/* extract MAC Address */
1234
	iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1235 1236 1237
	IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
	priv->hw->wiphy->addresses = priv->addresses;
	priv->hw->wiphy->n_addresses = 1;
1238
	num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1239 1240 1241 1242 1243 1244
	if (num_mac > 1) {
		memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
		       ETH_ALEN);
		priv->addresses[1].addr[5]++;
		priv->hw->wiphy->n_addresses++;
	}
1245 1246 1247 1248

	/************************
	 * 5. Setup HW constants
	 ************************/
1249
	iwl_set_hw_params(priv);
1250

1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
	ucode_flags = fw->ucode_capa.flags;

#ifndef CONFIG_IWLWIFI_P2P
	ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
#endif
	if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE))
		ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;

	/*
	 * if not PAN, then don't support P2P -- might be a uCode
	 * packaging bug or due to the eeprom check above
	 */
	if (!(ucode_flags & IWL_UCODE_TLV_FLAGS_PAN))
		ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;


1267
	/*******************
T
Tomas Winkler 已提交
1268
	 * 6. Setup priv
1269
	 *******************/
Z
Zhu Yi 已提交
1270

T
Tomas Winkler 已提交
1271
	err = iwl_init_drv(priv);
1272
	if (err)
R
Ron Rindjunsky 已提交
1273
		goto out_free_eeprom;
1274
	/* At this point both hw and priv are initialized. */
1275 1276

	/********************
1277
	 * 7. Setup services
1278
	 ********************/
1279
	iwl_setup_deferred_work(priv);
1280
	iwl_setup_rx_handlers(priv);
1281
	iwl_testmode_init(priv);
1282

1283
	iwl_power_initialize(priv);
1284
	iwl_tt_initialize(priv);
J
Johannes Berg 已提交
1285

1286 1287 1288 1289 1290
	snprintf(priv->hw->wiphy->fw_version,
		 sizeof(priv->hw->wiphy->fw_version),
		 "%s", fw->fw_version);

	priv->new_scan_threshold_behaviour =
1291
		!!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1292

1293
	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306
		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
		priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
	} else {
		priv->sta_key_max_num = STA_KEY_MAX_NUM;
		priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
	}

	priv->phy_calib_chain_noise_reset_cmd =
		fw->ucode_capa.standard_phy_calibration_size;
	priv->phy_calib_chain_noise_gain_cmd =
		fw->ucode_capa.standard_phy_calibration_size + 1;

	/* initialize all valid contexts */
1307
	iwl_init_context(priv, ucode_flags);
1308 1309 1310 1311 1312 1313 1314

	/**************************************************
	 * This is still part of probe() in a sense...
	 *
	 * 9. Setup and register with mac80211 and debugfs
	 **************************************************/
	err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
J
Johannes Berg 已提交
1315
	if (err)
1316
		goto out_destroy_workqueue;
J
Johannes Berg 已提交
1317

1318 1319 1320 1321 1322 1323
	err = iwl_dbgfs_register(priv, DRV_NAME);
	if (err)
		IWL_ERR(priv,
			"failed to create debugfs files. Ignoring error: %d\n",
			err);

1324
	return op_mode;
Z
Zhu Yi 已提交
1325

1326
out_destroy_workqueue:
J
Johannes Berg 已提交
1327 1328
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
T
Tomas Winkler 已提交
1329
	iwl_uninit_drv(priv);
1330
out_free_eeprom:
1331
	iwl_eeprom_free(priv->shrd);
1332
out_free_traffic_mem:
1333
	iwl_free_traffic_mem(priv);
1334
	ieee80211_free_hw(priv->hw);
1335
out:
1336 1337
	op_mode = NULL;
	return op_mode;
Z
Zhu Yi 已提交
1338 1339
}

1340
static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
Z
Zhu Yi 已提交
1341
{
1342 1343
	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);

1344
	wait_for_completion(&nic(priv)->request_firmware_complete);
1345

1346
	IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Z
Zhu Yi 已提交
1347

1348 1349
	iwl_dbgfs_unregister(priv);

1350
	/* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1351
	 * to be called and iwl_down since we are removing the device
1352 1353
	 * we need to set STATUS_EXIT_PENDING bit.
	 */
1354
	set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1355

W
Wey-Yi Guy 已提交
1356
	iwl_testmode_cleanup(priv);
1357
	iwlagn_mac_unregister(priv);
1358

1359 1360
	iwl_tt_exit(priv);

1361 1362
	/*This will stop the queues, move the device to low power state */
	iwl_trans_stop_device(trans(priv));
1363

D
Don Fry 已提交
1364
	iwl_dealloc_ucode(nic(priv));
Z
Zhu Yi 已提交
1365

1366
	iwl_eeprom_free(priv->shrd);
Z
Zhu Yi 已提交
1367

M
Mohamed Abbas 已提交
1368
	/*netif_stop_queue(dev); */
J
Johannes Berg 已提交
1369
	flush_workqueue(priv->workqueue);
M
Mohamed Abbas 已提交
1370

1371
	/* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
J
Johannes Berg 已提交
1372
	 * priv->workqueue... so we can't take down the workqueue
Z
Zhu Yi 已提交
1373
	 * until now... */
J
Johannes Berg 已提交
1374 1375
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
1376
	iwl_free_traffic_mem(priv);
Z
Zhu Yi 已提交
1377

T
Tomas Winkler 已提交
1378
	iwl_uninit_drv(priv);
Z
Zhu Yi 已提交
1379

1380
	dev_kfree_skb(priv->beacon_skb);
Z
Zhu Yi 已提交
1381 1382 1383 1384

	ieee80211_free_hw(priv->hw);
}

1385 1386 1387
const struct iwl_op_mode_ops iwl_dvm_ops = {
	.start = iwl_op_mode_dvm_start,
	.stop = iwl_op_mode_dvm_stop,
1388
	.rx = iwl_rx_dispatch,
1389 1390
	.queue_full = iwl_stop_sw_queue,
	.queue_not_full = iwl_wake_sw_queue,
1391
	.free_skb = iwl_free_skb,
1392
};
Z
Zhu Yi 已提交
1393 1394 1395 1396 1397 1398

/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/
1399
static int __init iwl_init(void)
Z
Zhu Yi 已提交
1400 1401 1402
{

	int ret;
1403 1404
	pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
	pr_info(DRV_COPYRIGHT "\n");
1405

1406
	ret = iwlagn_rate_control_register();
1407
	if (ret) {
1408
		pr_err("Unable to register rate control algorithm: %d\n", ret);
1409 1410 1411
		return ret;
	}

1412
	ret = iwl_pci_register_driver();
Z
Zhu Yi 已提交
1413

1414 1415
	if (ret)
		goto error_register;
Z
Zhu Yi 已提交
1416
	return ret;
1417 1418

error_register:
1419
	iwlagn_rate_control_unregister();
1420
	return ret;
Z
Zhu Yi 已提交
1421 1422
}

1423
static void __exit iwl_exit(void)
Z
Zhu Yi 已提交
1424
{
1425
	iwl_pci_unregister_driver();
1426
	iwlagn_rate_control_unregister();
Z
Zhu Yi 已提交
1427 1428
}

1429 1430
module_exit(iwl_exit);
module_init(iwl_init);
1431 1432

#ifdef CONFIG_IWLWIFI_DEBUG
1433 1434
module_param_named(debug, iwlagn_mod_params.debug_level, uint,
		   S_IRUGO | S_IWUSR);
1435 1436 1437
MODULE_PARM_DESC(debug, "debug output mask");
#endif

1438 1439 1440 1441
module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
MODULE_PARM_DESC(queues_num, "number of hw queues.");
J
Johannes Berg 已提交
1442 1443 1444
module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
MODULE_PARM_DESC(11n_disable,
	"disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1445 1446 1447 1448 1449
module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
		   int, S_IRUGO);
MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1450

1451 1452 1453
module_param_named(ucode_alternative,
		   iwlagn_mod_params.wanted_ucode_alternative,
		   int, S_IRUGO);
1454 1455
MODULE_PARM_DESC(ucode_alternative,
		 "specify ucode alternative to use from ucode file");
1456

1457 1458
module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
		   int, S_IRUGO);
1459 1460
MODULE_PARM_DESC(antenna_coupling,
		 "specify antenna coupling in dB (defualt: 0 dB)");
1461

1462 1463
module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
		   bool, S_IRUGO);
1464
MODULE_PARM_DESC(bt_ch_inhibition,
1465
		 "Enable BT channel inhibition (default: enable)");
1466 1467 1468 1469 1470 1471

module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");

module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1472

1473
module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1474
MODULE_PARM_DESC(wd_disable,
1475 1476
		"Disable stuck queue watchdog timer 0=system default, "
		"1=disable, 2=enable (default: 0)");
1477

1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496
/*
 * 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)
 */
module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
		bool, S_IRUGO);
MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1497 1498 1499

module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
MODULE_PARM_DESC(led_mode, "0=system default, "
W
Wey-Yi Guy 已提交
1500
		"1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1501

1502 1503 1504 1505 1506
module_param_named(power_save, iwlagn_mod_params.power_save,
		bool, S_IRUGO);
MODULE_PARM_DESC(power_save,
		 "enable WiFi power management (default: disable)");

1507 1508 1509 1510 1511
module_param_named(power_level, iwlagn_mod_params.power_level,
		int, S_IRUGO);
MODULE_PARM_DESC(power_level,
		 "default power save level (range from 1 - 5, default: 1)");

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module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
		bool, S_IRUGO);
MODULE_PARM_DESC(auto_agg,
		 "enable agg w/o check traffic load (default: enable)");

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/*
 * For now, keep using power level 1 instead of automatically
 * adjusting ...
 */
module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
		bool, S_IRUGO);
MODULE_PARM_DESC(no_sleep_autoadjust,
		 "don't automatically adjust sleep level "
		 "according to maximum network latency (default: true)");