iwl3945-base.c 216.5 KB
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/******************************************************************************
 *
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 * Copyright(c) 2003 - 2008 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>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>

#include <net/ieee80211_radiotap.h>
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#include <net/lib80211.h>
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#include <net/mac80211.h>

#include <asm/div64.h>

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#define DRV_NAME	"iwl3945"

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#include "iwl-fh.h"
#include "iwl-3945-fh.h"
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#include "iwl-commands.h"
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#include "iwl-3945.h"
#include "iwl-helpers.h"
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#include "iwl-core.h"
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#include "iwl-dev.h"
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static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
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				  struct iwl_tx_queue *txq);
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/*
 * module name, copyright, version, etc.
 */

#define DRV_DESCRIPTION	\
"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"

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#ifdef CONFIG_IWL3945_DEBUG
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#define VD "d"
#else
#define VD
#endif

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#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
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#define VS "s"
#else
#define VS
#endif

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#define IWL39_VERSION "1.2.26k" VD VS
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#define DRV_COPYRIGHT	"Copyright(c) 2003-2008 Intel Corporation"
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#define DRV_AUTHOR     "<ilw@linux.intel.com>"
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#define DRV_VERSION     IWL39_VERSION
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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 parameters */
struct iwl_mod_params iwl3945_mod_params = {
	.num_of_queues = IWL39_MAX_NUM_QUEUES,
	/* the rest are 0 by default */
};

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/*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
 * DMA services
 *
 * Theory of operation
 *
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 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
 * of buffer descriptors, each of which points to one or more data buffers for
 * the device to read from or fill.  Driver and device exchange status of each
 * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
 * entries in each circular buffer, to protect against confusing empty and full
 * queue states.
 *
 * The device reads or writes the data in the queues via the device's several
 * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
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 *
 * For Tx queue, there are low mark and high mark limits. If, after queuing
 * the packet for Tx, free space become < low mark, Tx queue stopped. When
 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
 * Tx queue resumed.
 *
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 * The 3945 operates with six queues:  One receive queue, one transmit queue
 * (#4) for sending commands to the device firmware, and four transmit queues
 * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
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 ***************************************************/

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int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
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{
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	return q->write_ptr > q->read_ptr ?
		(i >= q->read_ptr && i < q->write_ptr) :
		!(i < q->read_ptr && i >= q->write_ptr);
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}

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/**
 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
 */
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static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
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			  int count, int slots_num, u32 id)
{
	q->n_bd = count;
	q->n_window = slots_num;
	q->id = id;

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	/* count must be power-of-two size, otherwise iwl_queue_inc_wrap
	 * and iwl_queue_dec_wrap are broken. */
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	BUG_ON(!is_power_of_2(count));

	/* slots_num must be power-of-two size, otherwise
	 * get_cmd_index is broken. */
	BUG_ON(!is_power_of_2(slots_num));

	q->low_mark = q->n_window / 4;
	if (q->low_mark < 4)
		q->low_mark = 4;

	q->high_mark = q->n_window / 8;
	if (q->high_mark < 2)
		q->high_mark = 2;

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	q->write_ptr = q->read_ptr = 0;
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	return 0;
}

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/**
 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
 */
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static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
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			      struct iwl_tx_queue *txq, u32 id)
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{
	struct pci_dev *dev = priv->pci_dev;

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	/* Driver private data, only for Tx (not command) queues,
	 * not shared with device. */
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	if (id != IWL_CMD_QUEUE_NUM) {
		txq->txb = kmalloc(sizeof(txq->txb[0]) *
				   TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
		if (!txq->txb) {
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			IWL_ERR(priv, "kmalloc for auxiliary BD "
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				  "structures failed\n");
			goto error;
		}
	} else
		txq->txb = NULL;

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	/* Circular buffer of transmit frame descriptors (TFDs),
	 * shared with device */
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	txq->tfds39 = pci_alloc_consistent(dev,
			sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX,
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			&txq->q.dma_addr);

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	if (!txq->tfds39) {
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		IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n",
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			  sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX);
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		goto error;
	}
	txq->q.id = id;

	return 0;

 error:
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	kfree(txq->txb);
	txq->txb = NULL;
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	return -ENOMEM;
}

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/**
 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
 */
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int iwl3945_tx_queue_init(struct iwl_priv *priv,
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		      struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
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{
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	int len, i;
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	int rc = 0;

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	/*
	 * Alloc buffer array for commands (Tx or other types of commands).
	 * For the command queue (#4), allocate command space + one big
	 * command for scan, since scan command is very huge; the system will
	 * not have two scans at the same time, so only one is needed.
	 * For data Tx queues (all other queues), no super-size command
	 * space is needed.
	 */
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	len = sizeof(struct iwl_cmd);
	for (i = 0; i <= slots_num; i++) {
		if (i == slots_num) {
			if (txq_id == IWL_CMD_QUEUE_NUM)
				len += IWL_MAX_SCAN_SIZE;
			else
				continue;
		}

		txq->cmd[i] = kmalloc(len, GFP_KERNEL);
		if (!txq->cmd[i])
			goto err;
	}
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	/* Alloc driver data array and TFD circular buffer */
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	rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
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	if (rc)
		goto err;
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	txq->need_update = 0;

	/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
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	 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
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	BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
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	/* Initialize queue high/low-water, head/tail indexes */
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	iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
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	/* Tell device where to find queue, enable DMA channel. */
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	iwl3945_hw_tx_queue_init(priv, txq);
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	return 0;
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err:
	for (i = 0; i < slots_num; i++) {
		kfree(txq->cmd[i]);
		txq->cmd[i] = NULL;
	}

	if (txq_id == IWL_CMD_QUEUE_NUM) {
		kfree(txq->cmd[slots_num]);
		txq->cmd[slots_num] = NULL;
	}
	return -ENOMEM;
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}

/**
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 * iwl3945_tx_queue_free - Deallocate DMA queue.
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 * @txq: Transmit queue to deallocate.
 *
 * Empty queue by removing and destroying all BD's.
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 * Free all buffers.
 * 0-fill, but do not free "txq" descriptor structure.
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 */
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void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
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{
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	struct iwl_queue *q = &txq->q;
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	struct pci_dev *dev = priv->pci_dev;
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	int len, i;
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	if (q->n_bd == 0)
		return;

	/* first, empty all BD's */
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	for (; q->write_ptr != q->read_ptr;
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	     q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
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		iwl3945_hw_txq_free_tfd(priv, txq);
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	len = sizeof(struct iwl_cmd) * q->n_window;
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	if (q->id == IWL_CMD_QUEUE_NUM)
		len += IWL_MAX_SCAN_SIZE;

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	/* De-alloc array of command/tx buffers */
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	for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
		kfree(txq->cmd[i]);
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	/* De-alloc circular buffer of TFDs */
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	if (txq->q.n_bd)
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		pci_free_consistent(dev, sizeof(struct iwl3945_tfd) *
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				    txq->q.n_bd, txq->tfds39, txq->q.dma_addr);
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	/* De-alloc array of per-TFD driver data */
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	kfree(txq->txb);
	txq->txb = NULL;
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	/* 0-fill queue descriptor structure */
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	memset(txq, 0, sizeof(*txq));
}

/*************** STATION TABLE MANAGEMENT ****
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 * mac80211 should be examined to determine if sta_info is duplicating
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 * the functionality provided here
 */

/**************************************************************/
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#if 0 /* temporary disable till we add real remove station */
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/**
 * iwl3945_remove_station - Remove driver's knowledge of station.
 *
 * NOTE:  This does not remove station from device's station table.
 */
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static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
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{
	int index = IWL_INVALID_STATION;
	int i;
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);

	if (is_ap)
		index = IWL_AP_ID;
	else if (is_broadcast_ether_addr(addr))
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		index = priv->hw_params.bcast_sta_id;
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	else
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		for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
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			if (priv->stations_39[i].used &&
			    !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
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						addr)) {
				index = i;
				break;
			}

	if (unlikely(index == IWL_INVALID_STATION))
		goto out;

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	if (priv->stations_39[index].used) {
		priv->stations_39[index].used = 0;
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		priv->num_stations--;
	}

	BUG_ON(priv->num_stations < 0);

out:
	spin_unlock_irqrestore(&priv->sta_lock, flags);
	return 0;
}
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#endif
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/**
 * iwl3945_clear_stations_table - Clear the driver's station table
 *
 * NOTE:  This does not clear or otherwise alter the device's station table.
 */
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static void iwl3945_clear_stations_table(struct iwl_priv *priv)
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{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);

	priv->num_stations = 0;
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	memset(priv->stations_39, 0, sizeof(priv->stations_39));
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	spin_unlock_irqrestore(&priv->sta_lock, flags);
}

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/**
 * iwl3945_add_station - Add station to station tables in driver and device
 */
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u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
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{
	int i;
	int index = IWL_INVALID_STATION;
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	struct iwl3945_station_entry *station;
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	unsigned long flags_spin;
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	u8 rate;
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	spin_lock_irqsave(&priv->sta_lock, flags_spin);
	if (is_ap)
		index = IWL_AP_ID;
	else if (is_broadcast_ether_addr(addr))
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		index = priv->hw_params.bcast_sta_id;
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	else
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		for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
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			if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
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						addr)) {
				index = i;
				break;
			}

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			if (!priv->stations_39[i].used &&
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			    index == IWL_INVALID_STATION)
				index = i;
		}

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	/* These two conditions has the same outcome but keep them separate
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	  since they have different meaning */
	if (unlikely(index == IWL_INVALID_STATION)) {
		spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
		return index;
	}

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	if (priv->stations_39[index].used &&
	   !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
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		spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
		return index;
	}

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	IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
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	station = &priv->stations_39[index];
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	station->used = 1;
	priv->num_stations++;

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	/* Set up the REPLY_ADD_STA command to send to device */
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	memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
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	memcpy(station->sta.sta.addr, addr, ETH_ALEN);
	station->sta.mode = 0;
	station->sta.sta.sta_id = index;
	station->sta.station_flags = 0;

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	if (priv->band == IEEE80211_BAND_5GHZ)
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		rate = IWL_RATE_6M_PLCP;
	else
		rate =	IWL_RATE_1M_PLCP;
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	/* Turn on both antennas for the station... */
	station->sta.rate_n_flags =
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			iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
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	spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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	/* Add station to device's station table */
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	iwl3945_send_add_station(priv, &station->sta, flags);
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	return index;

}


/*************** HOST COMMAND QUEUE FUNCTIONS   *****/

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#define IWL_CMD(x) case x: return #x
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#define HOST_COMPLETE_TIMEOUT (HZ / 2)

/**
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 * iwl3945_enqueue_hcmd - enqueue a uCode command
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 * @priv: device private data point
 * @cmd: a point to the ucode command structure
 *
 * The function returns < 0 values to indicate the operation is
 * failed. On success, it turns the index (> 0) of command in the
 * command queue.
 */
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static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
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{
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	struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
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	struct iwl_queue *q = &txq->q;
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	struct iwl3945_tfd *tfd;
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	struct iwl_cmd *out_cmd;
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	u32 idx;
	u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
	dma_addr_t phys_addr;
	int pad;
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	int ret, len;
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	unsigned long flags;

	/* If any of the command structures end up being larger than
	 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
	 * we will need to increase the size of the TFD entries */
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	BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
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	       !(cmd->meta.flags & CMD_SIZE_HUGE));

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	if (iwl_is_rfkill(priv)) {
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		IWL_DEBUG_INFO("Not sending command - RF KILL");
		return -EIO;
	}

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	if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
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		IWL_ERR(priv, "No space for Tx\n");
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		return -ENOSPC;
	}

	spin_lock_irqsave(&priv->hcmd_lock, flags);

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	tfd = &txq->tfds39[q->write_ptr];
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	memset(tfd, 0, sizeof(*tfd));

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	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
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	out_cmd = txq->cmd[idx];
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	out_cmd->hdr.cmd = cmd->id;
	memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
	memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);

	/* At this point, the out_cmd now has all of the incoming cmd
	 * information */

	out_cmd->hdr.flags = 0;
	out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
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			INDEX_TO_SEQ(q->write_ptr));
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	if (out_cmd->meta.flags & CMD_SIZE_HUGE)
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		out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
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	len = (idx == TFD_CMD_SLOTS) ?
			IWL_MAX_SCAN_SIZE : sizeof(struct iwl_cmd);

	phys_addr = pci_map_single(priv->pci_dev, out_cmd,
					len, PCI_DMA_TODEVICE);
	pci_unmap_addr_set(&out_cmd->meta, mapping, phys_addr);
	pci_unmap_len_set(&out_cmd->meta, len, len);
	phys_addr += offsetof(struct iwl_cmd, hdr);

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	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
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	pad = U32_PAD(cmd->len);
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	tfd->control_flags |= cpu_to_le32(TFD_CTL_PAD_SET(pad));
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	IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
		     "%d bytes at %d[%d]:%d\n",
		     get_cmd_string(out_cmd->hdr.cmd),
		     out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
530
		     fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Z
Zhu Yi 已提交
531 532

	txq->need_update = 1;
533 534

	/* Increment and update queue's write index */
T
Tomas Winkler 已提交
535
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
536
	ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
537 538 539 540 541

	spin_unlock_irqrestore(&priv->hcmd_lock, flags);
	return ret ? ret : idx;
}

542 543
static int iwl3945_send_cmd_async(struct iwl_priv *priv,
				  struct iwl_host_cmd *cmd)
Z
Zhu Yi 已提交
544 545 546 547 548 549 550 551 552 553 554 555 556 557
{
	int ret;

	BUG_ON(!(cmd->meta.flags & CMD_ASYNC));

	/* An asynchronous command can not expect an SKB to be set. */
	BUG_ON(cmd->meta.flags & CMD_WANT_SKB);

	/* An asynchronous command MUST have a callback. */
	BUG_ON(!cmd->meta.u.callback);

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

C
Christoph Hellwig 已提交
558
	ret = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
559
	if (ret < 0) {
560 561 562
		IWL_ERR(priv,
			"Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
			get_cmd_string(cmd->id), ret);
Z
Zhu Yi 已提交
563 564 565 566 567
		return ret;
	}
	return 0;
}

568 569
static int iwl3945_send_cmd_sync(struct iwl_priv *priv,
				 struct iwl_host_cmd *cmd)
Z
Zhu Yi 已提交
570 571 572 573 574 575 576 577 578
{
	int cmd_idx;
	int ret;

	BUG_ON(cmd->meta.flags & CMD_ASYNC);

	 /* A synchronous command can not have a callback set. */
	BUG_ON(cmd->meta.u.callback != NULL);

579
	if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
580 581 582
		IWL_ERR(priv,
			"Error sending %s: Already sending a host command\n",
			get_cmd_string(cmd->id));
583 584
		ret = -EBUSY;
		goto out;
Z
Zhu Yi 已提交
585 586 587 588 589 590 591
	}

	set_bit(STATUS_HCMD_ACTIVE, &priv->status);

	if (cmd->meta.flags & CMD_WANT_SKB)
		cmd->meta.source = &cmd->meta;

C
Christoph Hellwig 已提交
592
	cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
593 594
	if (cmd_idx < 0) {
		ret = cmd_idx;
595 596 597
		IWL_ERR(priv,
			"Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
			get_cmd_string(cmd->id), ret);
Z
Zhu Yi 已提交
598 599 600 601 602 603 604 605
		goto out;
	}

	ret = wait_event_interruptible_timeout(priv->wait_command_queue,
			!test_bit(STATUS_HCMD_ACTIVE, &priv->status),
			HOST_COMPLETE_TIMEOUT);
	if (!ret) {
		if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
606
			IWL_ERR(priv, "Error sending %s: time out after %dms\n",
Z
Zhu Yi 已提交
607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628
				  get_cmd_string(cmd->id),
				  jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));

			clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
			ret = -ETIMEDOUT;
			goto cancel;
		}
	}

	if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
		IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
			       get_cmd_string(cmd->id));
		ret = -ECANCELED;
		goto fail;
	}
	if (test_bit(STATUS_FW_ERROR, &priv->status)) {
		IWL_DEBUG_INFO("Command %s failed: FW Error\n",
			       get_cmd_string(cmd->id));
		ret = -EIO;
		goto fail;
	}
	if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
629
		IWL_ERR(priv, "Error: Response NULL in '%s'\n",
Z
Zhu Yi 已提交
630 631
			  get_cmd_string(cmd->id));
		ret = -EIO;
632
		goto cancel;
Z
Zhu Yi 已提交
633 634 635 636 637 638 639
	}

	ret = 0;
	goto out;

cancel:
	if (cmd->meta.flags & CMD_WANT_SKB) {
640
		struct iwl_cmd *qcmd;
Z
Zhu Yi 已提交
641 642 643 644 645

		/* Cancel the CMD_WANT_SKB flag for the cmd in the
		 * TX cmd queue. Otherwise in case the cmd comes
		 * in later, it will possibly set an invalid
		 * address (cmd->meta.source). */
646
		qcmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
Z
Zhu Yi 已提交
647 648 649 650 651 652 653 654
		qcmd->meta.flags &= ~CMD_WANT_SKB;
	}
fail:
	if (cmd->meta.u.skb) {
		dev_kfree_skb_any(cmd->meta.u.skb);
		cmd->meta.u.skb = NULL;
	}
out:
655
	clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
Z
Zhu Yi 已提交
656 657 658
	return ret;
}

659
int iwl3945_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
Z
Zhu Yi 已提交
660 661
{
	if (cmd->meta.flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
662
		return iwl3945_send_cmd_async(priv, cmd);
Z
Zhu Yi 已提交
663

C
Christoph Hellwig 已提交
664
	return iwl3945_send_cmd_sync(priv, cmd);
Z
Zhu Yi 已提交
665 666
}

667
int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
Z
Zhu Yi 已提交
668
{
669
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
670 671 672 673 674
		.id = id,
		.len = len,
		.data = data,
	};

C
Christoph Hellwig 已提交
675
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
676 677
}

678
static int __must_check iwl3945_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
Z
Zhu Yi 已提交
679
{
680
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
681 682 683 684 685
		.id = id,
		.len = sizeof(val),
		.data = &val,
	};

C
Christoph Hellwig 已提交
686
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
687 688
}

689
int iwl3945_send_statistics_request(struct iwl_priv *priv)
Z
Zhu Yi 已提交
690
{
C
Christoph Hellwig 已提交
691
	return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Z
Zhu Yi 已提交
692 693 694
}

/**
C
Christoph Hellwig 已提交
695
 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
696 697
 * @band: 2.4 or 5 GHz band
 * @channel: Any channel valid for the requested band
Z
Zhu Yi 已提交
698

699
 * In addition to setting the staging RXON, priv->band is also set.
Z
Zhu Yi 已提交
700 701
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
702
 * in the staging RXON flag structure based on the band
Z
Zhu Yi 已提交
703
 */
704
static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
705 706
				    enum ieee80211_band band,
				    u16 channel)
Z
Zhu Yi 已提交
707
{
708
	if (!iwl3945_get_channel_info(priv, band, channel)) {
Z
Zhu Yi 已提交
709
		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
710
			       channel, band);
Z
Zhu Yi 已提交
711 712 713
		return -EINVAL;
	}

714
	if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
715
	    (priv->band == band))
Z
Zhu Yi 已提交
716 717
		return 0;

718
	priv->staging39_rxon.channel = cpu_to_le16(channel);
719
	if (band == IEEE80211_BAND_5GHZ)
720
		priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
Z
Zhu Yi 已提交
721
	else
722
		priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
Z
Zhu Yi 已提交
723

724
	priv->band = band;
Z
Zhu Yi 已提交
725

726
	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Z
Zhu Yi 已提交
727 728 729 730 731

	return 0;
}

/**
C
Christoph Hellwig 已提交
732
 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Z
Zhu Yi 已提交
733 734 735 736 737
 *
 * 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
 */
738
static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
Z
Zhu Yi 已提交
739 740 741
{
	int error = 0;
	int counter = 1;
742
	struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
Z
Zhu Yi 已提交
743 744 745 746 747 748

	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)
749
			IWL_WARN(priv, "check 24G fields %d | %d\n",
Z
Zhu Yi 已提交
750 751 752 753 754
				    counter++, error);
	} else {
		error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
				0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
		if (error)
755
			IWL_WARN(priv, "check 52 fields %d | %d\n",
Z
Zhu Yi 已提交
756 757 758
				    counter++, error);
		error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
		if (error)
759
			IWL_WARN(priv, "check 52 CCK %d | %d\n",
Z
Zhu Yi 已提交
760 761 762 763
				    counter++, error);
	}
	error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
	if (error)
764
		IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
Z
Zhu Yi 已提交
765 766 767 768 769

	/* 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)
770
		IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
Z
Zhu Yi 已提交
771 772 773

	error |= (le16_to_cpu(rxon->assoc_id) > 2007);
	if (error)
774
		IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
Z
Zhu Yi 已提交
775 776 777 778

	error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
			== (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
	if (error)
779
		IWL_WARN(priv, "check CCK and short slot %d | %d\n",
Z
Zhu Yi 已提交
780 781 782 783 784
			    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)
785
		IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
Z
Zhu Yi 已提交
786 787 788 789 790
			    counter++, error);

	error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
			RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
	if (error)
791
		IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
Z
Zhu Yi 已提交
792 793 794 795 796 797
			    counter++, error);

	if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
		error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
				RXON_FLG_ANT_A_MSK)) == 0);
	if (error)
798
		IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
Z
Zhu Yi 已提交
799 800

	if (error)
801
		IWL_WARN(priv, "Tuning to channel %d\n",
Z
Zhu Yi 已提交
802 803 804
			    le16_to_cpu(rxon->channel));

	if (error) {
805
		IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
Z
Zhu Yi 已提交
806 807 808 809 810 811
		return -1;
	}
	return 0;
}

/**
812
 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
813
 * @priv: staging_rxon is compared to active_rxon
Z
Zhu Yi 已提交
814
 *
815 816 817
 * 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.
Z
Zhu Yi 已提交
818
 */
819
static int iwl3945_full_rxon_required(struct iwl_priv *priv)
Z
Zhu Yi 已提交
820 821 822
{

	/* These items are only settable from the full RXON command */
823
	if (!(iwl3945_is_associated(priv)) ||
824 825 826 827 828 829 830 831 832 833 834
	    compare_ether_addr(priv->staging39_rxon.bssid_addr,
			       priv->active39_rxon.bssid_addr) ||
	    compare_ether_addr(priv->staging39_rxon.node_addr,
			       priv->active39_rxon.node_addr) ||
	    compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
			       priv->active39_rxon.wlap_bssid_addr) ||
	    (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
	    (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
	    (priv->staging39_rxon.air_propagation !=
	     priv->active39_rxon.air_propagation) ||
	    (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
Z
Zhu Yi 已提交
835 836 837 838 839 840 841
		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 */
842 843
	if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
	    (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
Z
Zhu Yi 已提交
844 845 846
		return 1;

	/* Check if we are switching association toggle */
847 848
	if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
		(priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
Z
Zhu Yi 已提交
849 850 851 852 853
		return 1;

	return 0;
}

854
static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
Z
Zhu Yi 已提交
855 856
{
	int rc = 0;
857
	struct iwl_rx_packet *res = NULL;
C
Christoph Hellwig 已提交
858
	struct iwl3945_rxon_assoc_cmd rxon_assoc;
859
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
860 861 862 863 864
		.id = REPLY_RXON_ASSOC,
		.len = sizeof(rxon_assoc),
		.meta.flags = CMD_WANT_SKB,
		.data = &rxon_assoc,
	};
865 866
	const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
	const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
Z
Zhu Yi 已提交
867 868 869 870 871 872 873 874 875

	if ((rxon1->flags == rxon2->flags) &&
	    (rxon1->filter_flags == rxon2->filter_flags) &&
	    (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
	    (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
		IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
		return 0;
	}

876 877 878 879
	rxon_assoc.flags = priv->staging39_rxon.flags;
	rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
	rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
	rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
Z
Zhu Yi 已提交
880 881
	rxon_assoc.reserved = 0;

C
Christoph Hellwig 已提交
882
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
883 884 885
	if (rc)
		return rc;

886
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
887
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
888
		IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
Z
Zhu Yi 已提交
889 890 891 892 893 894 895 896 897 898
		rc = -EIO;
	}

	priv->alloc_rxb_skb--;
	dev_kfree_skb_any(cmd.meta.u.skb);

	return rc;
}

/**
C
Christoph Hellwig 已提交
899
 * iwl3945_commit_rxon - commit staging_rxon to hardware
Z
Zhu Yi 已提交
900
 *
901
 * The RXON command in staging_rxon is committed to the hardware and
Z
Zhu Yi 已提交
902 903 904 905
 * the active_rxon structure is updated with the new data.  This
 * function correctly transitions out of the RXON_ASSOC_MSK state if
 * a HW tune is required based on the RXON structure changes.
 */
906
static int iwl3945_commit_rxon(struct iwl_priv *priv)
Z
Zhu Yi 已提交
907 908
{
	/* cast away the const for active_rxon in this function */
909
	struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
Z
Zhu Yi 已提交
910 911
	int rc = 0;

912
	if (!iwl_is_alive(priv))
Z
Zhu Yi 已提交
913 914 915
		return -1;

	/* always get timestamp with Rx frame */
916
	priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
Z
Zhu Yi 已提交
917 918

	/* select antenna */
919
	priv->staging39_rxon.flags &=
Z
Zhu Yi 已提交
920
	    ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
921
	priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
Z
Zhu Yi 已提交
922

923
	rc = iwl3945_check_rxon_cmd(priv);
Z
Zhu Yi 已提交
924
	if (rc) {
925
		IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
Z
Zhu Yi 已提交
926 927 928 929
		return -EINVAL;
	}

	/* If we don't need to send a full RXON, we can use
C
Christoph Hellwig 已提交
930
	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
Z
Zhu Yi 已提交
931
	 * and other flags for the current radio configuration. */
C
Christoph Hellwig 已提交
932 933
	if (!iwl3945_full_rxon_required(priv)) {
		rc = iwl3945_send_rxon_assoc(priv);
Z
Zhu Yi 已提交
934
		if (rc) {
935
			IWL_ERR(priv, "Error setting RXON_ASSOC "
Z
Zhu Yi 已提交
936 937 938 939
				  "configuration (%d).\n", rc);
			return rc;
		}

940
		memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
Z
Zhu Yi 已提交
941 942 943 944 945 946 947 948

		return 0;
	}

	/* If we are currently associated and the new config requires
	 * an RXON_ASSOC and the new config wants the associated mask enabled,
	 * we must clear the associated from the active configuration
	 * before we apply the new config */
C
Christoph Hellwig 已提交
949
	if (iwl3945_is_associated(priv) &&
950
	    (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
Z
Zhu Yi 已提交
951 952 953
		IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;

C
Christoph Hellwig 已提交
954 955
		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
				      sizeof(struct iwl3945_rxon_cmd),
956
				      &priv->active39_rxon);
Z
Zhu Yi 已提交
957 958 959 960 961

		/* If the mask clearing failed then we set
		 * active_rxon back to what it was previously */
		if (rc) {
			active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
962
			IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
Z
Zhu Yi 已提交
963 964 965 966 967 968 969 970
				  "configuration (%d).\n", rc);
			return rc;
		}
	}

	IWL_DEBUG_INFO("Sending RXON\n"
		       "* with%s RXON_FILTER_ASSOC_MSK\n"
		       "* channel = %d\n"
J
Johannes Berg 已提交
971
		       "* bssid = %pM\n",
972
		       ((priv->staging39_rxon.filter_flags &
Z
Zhu Yi 已提交
973
			 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
974
		       le16_to_cpu(priv->staging39_rxon.channel),
J
Johannes Berg 已提交
975
		       priv->staging_rxon.bssid_addr);
Z
Zhu Yi 已提交
976 977

	/* Apply the new configuration */
C
Christoph Hellwig 已提交
978
	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
979
			      sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
Z
Zhu Yi 已提交
980
	if (rc) {
981
		IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
Z
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982 983 984
		return rc;
	}

985
	memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
Z
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986

C
Christoph Hellwig 已提交
987
	iwl3945_clear_stations_table(priv);
988

Z
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989 990
	/* If we issue a new RXON command which required a tune then we must
	 * send a new TXPOWER command or we won't be able to Tx any frames */
C
Christoph Hellwig 已提交
991
	rc = iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
992
	if (rc) {
993
		IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
Z
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994 995 996 997
		return rc;
	}

	/* Add the broadcast address so we can send broadcast frames */
998
	if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
Z
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999
	    IWL_INVALID_STATION) {
1000
		IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
Z
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1001 1002 1003 1004 1005
		return -EIO;
	}

	/* If we have set the ASSOC_MSK and we are in BSS mode then
	 * add the IWL_AP_ID to the station rate table */
C
Christoph Hellwig 已提交
1006
	if (iwl3945_is_associated(priv) &&
1007
	    (priv->iw_mode == NL80211_IFTYPE_STATION))
1008
		if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
Z
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1009
		    == IWL_INVALID_STATION) {
1010
			IWL_ERR(priv, "Error adding AP address for transmit\n");
Z
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1011 1012 1013
			return -EIO;
		}

1014
	/* Init the hardware's rate fallback order based on the band */
Z
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1015 1016
	rc = iwl3945_init_hw_rate_table(priv);
	if (rc) {
1017
		IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
Z
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1018 1019 1020 1021 1022 1023
		return -EIO;
	}

	return 0;
}

1024
static int iwl3945_send_bt_config(struct iwl_priv *priv)
Z
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1025
{
1026
	struct iwl_bt_cmd bt_cmd = {
Z
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1027 1028 1029 1030 1031 1032 1033
		.flags = 3,
		.lead_time = 0xAA,
		.max_kill = 1,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

C
Christoph Hellwig 已提交
1034
	return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1035
					sizeof(bt_cmd), &bt_cmd);
Z
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1036 1037
}

1038
static int iwl3945_send_scan_abort(struct iwl_priv *priv)
Z
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1039 1040
{
	int rc = 0;
1041
	struct iwl_rx_packet *res;
1042
	struct iwl_host_cmd cmd = {
Z
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1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
		.id = REPLY_SCAN_ABORT_CMD,
		.meta.flags = CMD_WANT_SKB,
	};

	/* If there isn't a scan actively going on in the hardware
	 * then we are in between scan bands and not actually
	 * actively scanning, so don't send the abort command */
	if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return 0;
	}

C
Christoph Hellwig 已提交
1055
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
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1056 1057 1058 1059 1060
	if (rc) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return rc;
	}

1061
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Z
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1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
	if (res->u.status != CAN_ABORT_STATUS) {
		/* The scan abort will return 1 for success or
		 * 2 for "failure".  A failure condition can be
		 * due to simply not being in an active scan which
		 * can occur if we send the scan abort before we
		 * the microcode has notified us that a scan is
		 * completed. */
		IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		clear_bit(STATUS_SCAN_HW, &priv->status);
	}

	dev_kfree_skb_any(cmd.meta.u.skb);

	return rc;
}

1079
static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
1080
				     struct iwl_cmd *cmd, struct sk_buff *skb)
Z
Zhu Yi 已提交
1081
{
1082
	struct iwl_rx_packet *res = NULL;
Z
Zhu Yi 已提交
1083 1084

	if (!skb) {
1085
		IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
Z
Zhu Yi 已提交
1086 1087 1088
		return 1;
	}

1089
	res = (struct iwl_rx_packet *)skb->data;
Z
Zhu Yi 已提交
1090
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1091
		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
Z
Zhu Yi 已提交
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
			  res->hdr.flags);
		return 1;
	}

	switch (res->u.add_sta.status) {
	case ADD_STA_SUCCESS_MSK:
		break;
	default:
		break;
	}

	/* We didn't cache the SKB; let the caller free it */
	return 1;
}

1107
int iwl3945_send_add_station(struct iwl_priv *priv,
C
Christoph Hellwig 已提交
1108
			 struct iwl3945_addsta_cmd *sta, u8 flags)
Z
Zhu Yi 已提交
1109
{
1110
	struct iwl_rx_packet *res = NULL;
Z
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1111
	int rc = 0;
1112
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
1113
		.id = REPLY_ADD_STA,
C
Christoph Hellwig 已提交
1114
		.len = sizeof(struct iwl3945_addsta_cmd),
Z
Zhu Yi 已提交
1115 1116 1117 1118 1119
		.meta.flags = flags,
		.data = sta,
	};

	if (flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
1120
		cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Z
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1121 1122 1123
	else
		cmd.meta.flags |= CMD_WANT_SKB;

C
Christoph Hellwig 已提交
1124
	rc = iwl3945_send_cmd(priv, &cmd);
Z
Zhu Yi 已提交
1125 1126 1127 1128

	if (rc || (flags & CMD_ASYNC))
		return rc;

1129
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
1130
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1131
		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
Z
Zhu Yi 已提交
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
			  res->hdr.flags);
		rc = -EIO;
	}

	if (rc == 0) {
		switch (res->u.add_sta.status) {
		case ADD_STA_SUCCESS_MSK:
			IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
			break;
		default:
			rc = -EIO;
1143
			IWL_WARN(priv, "REPLY_ADD_STA failed\n");
Z
Zhu Yi 已提交
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
			break;
		}
	}

	priv->alloc_rxb_skb--;
	dev_kfree_skb_any(cmd.meta.u.skb);

	return rc;
}

1154
static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
Z
Zhu Yi 已提交
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173
				   struct ieee80211_key_conf *keyconf,
				   u8 sta_id)
{
	unsigned long flags;
	__le16 key_flags = 0;

	switch (keyconf->alg) {
	case ALG_CCMP:
		key_flags |= STA_KEY_FLG_CCMP;
		key_flags |= cpu_to_le16(
				keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
		key_flags &= ~STA_KEY_FLG_INVALID;
		break;
	case ALG_TKIP:
	case ALG_WEP:
	default:
		return -EINVAL;
	}
	spin_lock_irqsave(&priv->sta_lock, flags);
1174 1175 1176
	priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
	priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
	memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
Z
Zhu Yi 已提交
1177 1178
	       keyconf->keylen);

1179
	memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
Z
Zhu Yi 已提交
1180
	       keyconf->keylen);
1181 1182 1183
	priv->stations_39[sta_id].sta.key.key_flags = key_flags;
	priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Z
Zhu Yi 已提交
1184 1185 1186 1187

	spin_unlock_irqrestore(&priv->sta_lock, flags);

	IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1188
	iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
Z
Zhu Yi 已提交
1189 1190 1191
	return 0;
}

1192
static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
Z
Zhu Yi 已提交
1193 1194 1195 1196
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
1197 1198
	memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
	memset(&priv->stations_39[sta_id].sta.key, 0,
1199
		sizeof(struct iwl4965_keyinfo));
1200 1201 1202
	priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
	priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Z
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1203 1204 1205
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1206
	iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
Z
Zhu Yi 已提交
1207 1208 1209
	return 0;
}

1210
static void iwl3945_clear_free_frames(struct iwl_priv *priv)
Z
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1211 1212 1213 1214 1215 1216 1217 1218 1219
{
	struct list_head *element;

	IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
		       priv->frames_count);

	while (!list_empty(&priv->free_frames)) {
		element = priv->free_frames.next;
		list_del(element);
C
Christoph Hellwig 已提交
1220
		kfree(list_entry(element, struct iwl3945_frame, list));
Z
Zhu Yi 已提交
1221 1222 1223 1224
		priv->frames_count--;
	}

	if (priv->frames_count) {
1225
		IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
Z
Zhu Yi 已提交
1226 1227 1228 1229 1230
			    priv->frames_count);
		priv->frames_count = 0;
	}
}

1231
static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1232
{
C
Christoph Hellwig 已提交
1233
	struct iwl3945_frame *frame;
Z
Zhu Yi 已提交
1234 1235 1236 1237
	struct list_head *element;
	if (list_empty(&priv->free_frames)) {
		frame = kzalloc(sizeof(*frame), GFP_KERNEL);
		if (!frame) {
1238
			IWL_ERR(priv, "Could not allocate frame!\n");
Z
Zhu Yi 已提交
1239 1240 1241 1242 1243 1244 1245 1246 1247
			return NULL;
		}

		priv->frames_count++;
		return frame;
	}

	element = priv->free_frames.next;
	list_del(element);
C
Christoph Hellwig 已提交
1248
	return list_entry(element, struct iwl3945_frame, list);
Z
Zhu Yi 已提交
1249 1250
}

1251
static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
Z
Zhu Yi 已提交
1252 1253 1254 1255 1256
{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

1257
unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
Z
Zhu Yi 已提交
1258
				struct ieee80211_hdr *hdr,
1259
				int left)
Z
Zhu Yi 已提交
1260 1261
{

C
Christoph Hellwig 已提交
1262
	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1263 1264
	    ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
	     (priv->iw_mode != NL80211_IFTYPE_AP)))
Z
Zhu Yi 已提交
1265 1266 1267 1268 1269 1270 1271 1272 1273 1274
		return 0;

	if (priv->ibss_beacon->len > left)
		return 0;

	memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);

	return priv->ibss_beacon->len;
}

1275
static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1276 1277
{
	u8 i;
1278 1279 1280
	int rate_mask;

	/* Set rate mask*/
1281
	if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1282
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1283
	else
1284
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
Z
Zhu Yi 已提交
1285 1286

	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
C
Christoph Hellwig 已提交
1287
	     i = iwl3945_rates[i].next_ieee) {
Z
Zhu Yi 已提交
1288
		if (rate_mask & (1 << i))
C
Christoph Hellwig 已提交
1289
			return iwl3945_rates[i].plcp;
Z
Zhu Yi 已提交
1290 1291
	}

1292
	/* No valid rate was found. Assign the lowest one */
1293
	if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1294 1295 1296
		return IWL_RATE_1M_PLCP;
	else
		return IWL_RATE_6M_PLCP;
Z
Zhu Yi 已提交
1297 1298
}

1299
static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1300
{
C
Christoph Hellwig 已提交
1301
	struct iwl3945_frame *frame;
Z
Zhu Yi 已提交
1302 1303 1304 1305
	unsigned int frame_size;
	int rc;
	u8 rate;

C
Christoph Hellwig 已提交
1306
	frame = iwl3945_get_free_frame(priv);
Z
Zhu Yi 已提交
1307 1308

	if (!frame) {
1309
		IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
Z
Zhu Yi 已提交
1310 1311 1312 1313
			  "command.\n");
		return -ENOMEM;
	}

1314
	rate = iwl3945_rate_get_lowest_plcp(priv);
Z
Zhu Yi 已提交
1315

C
Christoph Hellwig 已提交
1316
	frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Z
Zhu Yi 已提交
1317

C
Christoph Hellwig 已提交
1318
	rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Z
Zhu Yi 已提交
1319 1320
			      &frame->u.cmd[0]);

C
Christoph Hellwig 已提交
1321
	iwl3945_free_frame(priv, frame);
Z
Zhu Yi 已提交
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331

	return rc;
}

/******************************************************************************
 *
 * EEPROM related functions
 *
 ******************************************************************************/

1332
static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
Z
Zhu Yi 已提交
1333
{
1334
	memcpy(mac, priv->eeprom39.mac_address, 6);
Z
Zhu Yi 已提交
1335 1336
}

1337 1338 1339 1340 1341 1342 1343 1344
/*
 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
 * embedded controller) as EEPROM reader; each read is a series of pulses
 * to/from the EEPROM chip, not a single event, so even reads could conflict
 * if they weren't arbitrated by some ownership mechanism.  Here, the driver
 * simply claims ownership, which should be safe when this function is called
 * (i.e. before loading uCode!).
 */
1345
static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1346
{
1347
	_iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1348 1349 1350
	return 0;
}

Z
Zhu Yi 已提交
1351
/**
C
Christoph Hellwig 已提交
1352
 * iwl3945_eeprom_init - read EEPROM contents
Z
Zhu Yi 已提交
1353
 *
1354
 * Load the EEPROM contents from adapter into priv->eeprom39
Z
Zhu Yi 已提交
1355 1356 1357
 *
 * NOTE:  This routine uses the non-debug IO access functions.
 */
1358
int iwl3945_eeprom_init(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1359
{
1360
	u16 *e = (u16 *)&priv->eeprom39;
1361
	u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1362
	int sz = sizeof(priv->eeprom39);
1363
	int ret;
Z
Zhu Yi 已提交
1364 1365 1366 1367 1368 1369
	u16 addr;

	/* The EEPROM structure has several padding buffers within it
	 * and when adding new EEPROM maps is subject to programmer errors
	 * which may be very difficult to identify without explicitly
	 * checking the resulting size of the eeprom map. */
1370
	BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
Z
Zhu Yi 已提交
1371 1372

	if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1373
		IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
Z
Zhu Yi 已提交
1374 1375 1376
		return -ENOENT;
	}

1377
	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
1378 1379
	ret = iwl3945_eeprom_acquire_semaphore(priv);
	if (ret < 0) {
1380
		IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
Z
Zhu Yi 已提交
1381 1382 1383 1384 1385
		return -ENOENT;
	}

	/* eeprom is an array of 16bit values */
	for (addr = 0; addr < sz; addr += sizeof(u16)) {
1386
		u32 r;
Z
Zhu Yi 已提交
1387

1388
		_iwl_write32(priv, CSR_EEPROM_REG,
1389
				 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1390 1391
		_iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
		ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1392 1393 1394
					      CSR_EEPROM_REG_READ_VALID_MSK,
					      IWL_EEPROM_ACCESS_TIMEOUT);
		if (ret < 0) {
1395
			IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
1396
			return ret;
Z
Zhu Yi 已提交
1397
		}
1398

1399
		r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1400
		e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
Z
Zhu Yi 已提交
1401 1402 1403 1404 1405
	}

	return 0;
}

1406
static void iwl3945_unset_hw_params(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1407
{
1408
	if (priv->shared_virt)
Z
Zhu Yi 已提交
1409
		pci_free_consistent(priv->pci_dev,
C
Christoph Hellwig 已提交
1410
				    sizeof(struct iwl3945_shared),
1411 1412
				    priv->shared_virt,
				    priv->shared_phys);
Z
Zhu Yi 已提交
1413 1414 1415
}

/**
C
Christoph Hellwig 已提交
1416
 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Z
Zhu Yi 已提交
1417 1418 1419
 *
 * return : set the bit for each supported rate insert in ie
 */
C
Christoph Hellwig 已提交
1420
static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1421
				    u16 basic_rate, int *left)
Z
Zhu Yi 已提交
1422 1423 1424
{
	u16 ret_rates = 0, bit;
	int i;
1425 1426
	u8 *cnt = ie;
	u8 *rates = ie + 1;
Z
Zhu Yi 已提交
1427 1428 1429 1430

	for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
		if (bit & supported_rate) {
			ret_rates |= bit;
C
Christoph Hellwig 已提交
1431
			rates[*cnt] = iwl3945_rates[i].ieee |
1432 1433 1434 1435 1436
				((bit & basic_rate) ? 0x80 : 0x00);
			(*cnt)++;
			(*left)--;
			if ((*left <= 0) ||
			    (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
Z
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1437 1438 1439 1440 1441 1442 1443 1444
				break;
		}
	}

	return ret_rates;
}

/**
C
Christoph Hellwig 已提交
1445
 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Z
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1446
 */
1447
static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
Z
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1448
			      struct ieee80211_mgmt *frame,
J
Johannes Berg 已提交
1449
			      int left)
Z
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1450 1451 1452
{
	int len = 0;
	u8 *pos = NULL;
1453
	u16 active_rates, ret_rates, cck_rates;
Z
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	/* Make sure there is enough space for the probe request,
	 * two mandatory IEs and the data */
	left -= 24;
	if (left < 0)
		return 0;
	len += 24;

	frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1463
	memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
Z
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1464
	memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1465
	memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
Z
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	frame->seq_ctrl = 0;

	/* fill in our indirect SSID IE */
	/* ...next IE... */

	left -= 2;
	if (left < 0)
		return 0;
	len += 2;
	pos = &(frame->u.probe_req.variable[0]);
	*pos++ = WLAN_EID_SSID;
	*pos++ = 0;

	/* fill in supported rate */
	/* ...next IE... */
	left -= 2;
	if (left < 0)
		return 0;
1484

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	/* ... fill it in... */
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos = 0;
1488 1489 1490

	priv->active_rate = priv->rates_mask;
	active_rates = priv->active_rate;
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	priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;

1493
	cck_rates = IWL_CCK_RATES_MASK & active_rates;
C
Christoph Hellwig 已提交
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	ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1495 1496 1497
			priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

C
Christoph Hellwig 已提交
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	ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1499 1500 1501
				 priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

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	len += 2 + *pos;
	pos += (*pos) + 1;
1504
	if (active_rates == 0)
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1505 1506 1507 1508 1509 1510 1511 1512 1513 1514
		goto fill_end;

	/* fill in supported extended rate */
	/* ...next IE... */
	left -= 2;
	if (left < 0)
		return 0;
	/* ... fill it in... */
	*pos++ = WLAN_EID_EXT_SUPP_RATES;
	*pos = 0;
C
Christoph Hellwig 已提交
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	iwl3945_supported_rate_to_ie(pos, active_rates,
1516
				 priv->active_rate_basic, &left);
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	if (*pos > 0)
		len += 2 + *pos;

 fill_end:
	return (u16)len;
}

/*
 * QoS  support
*/
1527
static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1528
				       struct iwl_qosparam_cmd *qos)
Z
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{

C
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	return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1532
				sizeof(struct iwl_qosparam_cmd), qos);
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}

1535
static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
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{
	unsigned long flags;

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

	spin_lock_irqsave(&priv->lock, flags);
	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;

	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
1556
	if (force || iwl3945_is_associated(priv)) {
T
Tomas Winkler 已提交
1557
		IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
Z
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			      priv->qos_data.qos_active);

C
Christoph Hellwig 已提交
1560
		iwl3945_send_qos_params_command(priv,
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				&(priv->qos_data.def_qos_parm));
	}
}

/*
 * Power management (not Tx power!) functions
 */
#define MSEC_TO_USEC 1024

1570 1571 1572

#define NOSLP __constant_cpu_to_le16(0), 0, 0
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
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#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
				     __constant_cpu_to_le32(X1), \
				     __constant_cpu_to_le32(X2), \
				     __constant_cpu_to_le32(X3), \
				     __constant_cpu_to_le32(X4)}

/* default power management (not Tx power) table values */
T
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/* for TIM  0-10 */
1582
static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
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	{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
	{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
	{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
	{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
	{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
	{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
};

T
Tomas Winkler 已提交
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/* for TIM > 10 */
1592
static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
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	{{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
	{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
		 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
	{{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
		 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
	{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
		 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
	{{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
	{{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
		 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
};

1605
int iwl3945_power_init_handle(struct iwl_priv *priv)
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{
	int rc = 0, i;
C
Christoph Hellwig 已提交
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	struct iwl3945_power_mgr *pow_data;
1609
	int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
Z
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	u16 pci_pm;

	IWL_DEBUG_POWER("Initialize power \n");

1614
	pow_data = &(priv->power_data_39);
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	memset(pow_data, 0, sizeof(*pow_data));

	pow_data->active_index = IWL_POWER_RANGE_0;
	pow_data->dtim_val = 0xffff;

	memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
	memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);

	rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
	if (rc != 0)
		return 0;
	else {
1628
		struct iwl_powertable_cmd *cmd;
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1629 1630 1631

		IWL_DEBUG_POWER("adjust power command flags\n");

1632
		for (i = 0; i < IWL39_POWER_AC; i++) {
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			cmd = &pow_data->pwr_range_0[i].cmd;

			if (pci_pm & 0x1)
				cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
			else
				cmd->flags |= IWL_POWER_PCI_PM_MSK;
		}
	}
	return rc;
}

1644
static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1645
				struct iwl_powertable_cmd *cmd, u32 mode)
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{
	int rc = 0, i;
	u8 skip;
	u32 max_sleep = 0;
1650
	struct iwl_power_vec_entry *range;
Z
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1651
	u8 period = 0;
C
Christoph Hellwig 已提交
1652
	struct iwl3945_power_mgr *pow_data;
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1653 1654 1655 1656 1657

	if (mode > IWL_POWER_INDEX_5) {
		IWL_DEBUG_POWER("Error invalid power mode \n");
		return -1;
	}
1658
	pow_data = &(priv->power_data_39);
Z
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1659 1660 1661 1662 1663 1664

	if (pow_data->active_index == IWL_POWER_RANGE_0)
		range = &pow_data->pwr_range_0[0];
	else
		range = &pow_data->pwr_range_1[1];

C
Christoph Hellwig 已提交
1665
	memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
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#ifdef IWL_MAC80211_DISABLE
	if (priv->assoc_network != NULL) {
		unsigned long flags;

		period = priv->assoc_network->tim.tim_period;
	}
#endif	/*IWL_MAC80211_DISABLE */
	skip = range[mode].no_dtim;

	if (period == 0) {
		period = 1;
		skip = 0;
	}

	if (skip == 0) {
		max_sleep = period;
		cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
	} else {
		__le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
		max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
		cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
	}

	for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
		if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
			cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
	}

	IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
	IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
	IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
	IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
			le32_to_cpu(cmd->sleep_interval[0]),
			le32_to_cpu(cmd->sleep_interval[1]),
			le32_to_cpu(cmd->sleep_interval[2]),
			le32_to_cpu(cmd->sleep_interval[3]),
			le32_to_cpu(cmd->sleep_interval[4]));

	return rc;
}

1708
static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
Z
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1709
{
1710
	u32 uninitialized_var(final_mode);
Z
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1711
	int rc;
1712
	struct iwl_powertable_cmd cmd;
Z
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1713 1714

	/* If on battery, set to 3,
1715
	 * if plugged into AC power, set to CAM ("continuously aware mode"),
Z
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1716 1717
	 * else user level */
	switch (mode) {
1718
	case IWL39_POWER_BATTERY:
Z
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1719 1720
		final_mode = IWL_POWER_INDEX_3;
		break;
1721
	case IWL39_POWER_AC:
Z
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1722 1723 1724 1725 1726 1727 1728
		final_mode = IWL_POWER_MODE_CAM;
		break;
	default:
		final_mode = mode;
		break;
	}

C
Christoph Hellwig 已提交
1729
	iwl3945_update_power_cmd(priv, &cmd, final_mode);
Z
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1730

1731 1732 1733
	/* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
	rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
				sizeof(struct iwl3945_powertable_cmd), &cmd);
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1734 1735 1736 1737 1738 1739 1740 1741 1742 1743

	if (final_mode == IWL_POWER_MODE_CAM)
		clear_bit(STATUS_POWER_PMI, &priv->status);
	else
		set_bit(STATUS_POWER_PMI, &priv->status);

	return rc;
}

/**
C
Christoph Hellwig 已提交
1744
 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Z
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1745 1746 1747
 *
 * NOTE: priv->mutex is not required before calling this function
 */
1748
static int iwl3945_scan_cancel(struct iwl_priv *priv)
Z
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1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770
{
	if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
		clear_bit(STATUS_SCANNING, &priv->status);
		return 0;
	}

	if (test_bit(STATUS_SCANNING, &priv->status)) {
		if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
			IWL_DEBUG_SCAN("Queuing scan abort.\n");
			set_bit(STATUS_SCAN_ABORTING, &priv->status);
			queue_work(priv->workqueue, &priv->abort_scan);

		} else
			IWL_DEBUG_SCAN("Scan abort already in progress.\n");

		return test_bit(STATUS_SCANNING, &priv->status);
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
1771
 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Z
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1772 1773 1774 1775
 * @ms: amount of time to wait (in milliseconds) for scan to abort
 *
 * NOTE: priv->mutex must be held before calling this function
 */
1776
static int iwl3945_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
Z
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1777 1778 1779 1780
{
	unsigned long now = jiffies;
	int ret;

C
Christoph Hellwig 已提交
1781
	ret = iwl3945_scan_cancel(priv);
Z
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1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797
	if (ret && ms) {
		mutex_unlock(&priv->mutex);
		while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
				test_bit(STATUS_SCANNING, &priv->status))
			msleep(1);
		mutex_lock(&priv->mutex);

		return test_bit(STATUS_SCANNING, &priv->status);
	}

	return ret;
}

#define MAX_UCODE_BEACON_INTERVAL	1024
#define INTEL_CONN_LISTEN_INTERVAL	__constant_cpu_to_le16(0xA)

C
Christoph Hellwig 已提交
1798
static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
Z
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1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810
{
	u16 new_val = 0;
	u16 beacon_factor = 0;

	beacon_factor =
	    (beacon_val + MAX_UCODE_BEACON_INTERVAL)
		/ MAX_UCODE_BEACON_INTERVAL;
	new_val = beacon_val / beacon_factor;

	return cpu_to_le16(new_val);
}

1811
static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
Z
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1812 1813 1814 1815 1816 1817 1818 1819 1820 1821
{
	u64 interval_tm_unit;
	u64 tsf, result;
	unsigned long flags;
	struct ieee80211_conf *conf = NULL;
	u16 beacon_int = 0;

	conf = ieee80211_get_hw_conf(priv->hw);

	spin_lock_irqsave(&priv->lock, flags);
1822
	priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
Z
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1823 1824
	priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;

1825
	tsf = priv->timestamp;
Z
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1826 1827 1828 1829

	beacon_int = priv->beacon_int;
	spin_unlock_irqrestore(&priv->lock, flags);

1830
	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Z
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1831 1832 1833 1834 1835 1836 1837
		if (beacon_int == 0) {
			priv->rxon_timing.beacon_interval = cpu_to_le16(100);
			priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
		} else {
			priv->rxon_timing.beacon_interval =
				cpu_to_le16(beacon_int);
			priv->rxon_timing.beacon_interval =
C
Christoph Hellwig 已提交
1838
			    iwl3945_adjust_beacon_interval(
Z
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1839 1840 1841 1842 1843 1844
				le16_to_cpu(priv->rxon_timing.beacon_interval));
		}

		priv->rxon_timing.atim_window = 0;
	} else {
		priv->rxon_timing.beacon_interval =
C
Christoph Hellwig 已提交
1845
			iwl3945_adjust_beacon_interval(conf->beacon_int);
Z
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1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863
		/* TODO: we need to get atim_window from upper stack
		 * for now we set to 0 */
		priv->rxon_timing.atim_window = 0;
	}

	interval_tm_unit =
		(le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
	result = do_div(tsf, interval_tm_unit);
	priv->rxon_timing.beacon_init_val =
	    cpu_to_le32((u32) ((u64) interval_tm_unit - result));

	IWL_DEBUG_ASSOC
	    ("beacon interval %d beacon timer %d beacon tim %d\n",
		le16_to_cpu(priv->rxon_timing.beacon_interval),
		le32_to_cpu(priv->rxon_timing.beacon_init_val),
		le16_to_cpu(priv->rxon_timing.atim_window));
}

1864
static int iwl3945_scan_initiate(struct iwl_priv *priv)
Z
Zhu Yi 已提交
1865
{
1866
	if (!iwl_is_ready_rf(priv)) {
Z
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1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
		IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
		return -EIO;
	}

	if (test_bit(STATUS_SCANNING, &priv->status)) {
		IWL_DEBUG_SCAN("Scan already in progress.\n");
		return -EAGAIN;
	}

	if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
		IWL_DEBUG_SCAN("Scan request while abort pending.  "
			       "Queuing.\n");
		return -EAGAIN;
	}

	IWL_DEBUG_INFO("Starting scan...\n");
1883 1884 1885 1886
	if (priv->cfg->sku & IWL_SKU_G)
		priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
	if (priv->cfg->sku & IWL_SKU_A)
		priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
Z
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	set_bit(STATUS_SCANNING, &priv->status);
	priv->scan_start = jiffies;
	priv->scan_pass_start = priv->scan_start;

	queue_work(priv->workqueue, &priv->request_scan);

	return 0;
}

1896
static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
Z
Zhu Yi 已提交
1897
{
1898
	struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
Z
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1899 1900 1901 1902 1903 1904 1905 1906 1907

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

	return 0;
}

1908
static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1909
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
1910
{
1911
	if (band == IEEE80211_BAND_5GHZ) {
1912
		priv->staging39_rxon.flags &=
Z
Zhu Yi 已提交
1913 1914
		    ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
		      | RXON_FLG_CCK_MSK);
1915
		priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
1916
	} else {
C
Christoph Hellwig 已提交
1917
		/* Copied from iwl3945_bg_post_associate() */
Z
Zhu Yi 已提交
1918
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1919
			priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
1920
		else
1921
			priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
1922

1923
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1924
			priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
1925

1926 1927 1928
		priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
		priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
		priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
Z
Zhu Yi 已提交
1929 1930 1931 1932
	}
}

/*
1933
 * initialize rxon structure with default values from eeprom
Z
Zhu Yi 已提交
1934
 */
1935
static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1936
					      int mode)
Z
Zhu Yi 已提交
1937
{
1938
	const struct iwl_channel_info *ch_info;
Z
Zhu Yi 已提交
1939

1940
	memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
Z
Zhu Yi 已提交
1941

1942
	switch (mode) {
1943
	case NL80211_IFTYPE_AP:
1944
		priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
Z
Zhu Yi 已提交
1945 1946
		break;

1947
	case NL80211_IFTYPE_STATION:
1948 1949
		priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
Z
Zhu Yi 已提交
1950 1951
		break;

1952
	case NL80211_IFTYPE_ADHOC:
1953 1954 1955
		priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
		priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
		priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
Z
Zhu Yi 已提交
1956 1957 1958
						  RXON_FILTER_ACCEPT_GRP_MSK;
		break;

1959
	case NL80211_IFTYPE_MONITOR:
1960 1961
		priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
		priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
Z
Zhu Yi 已提交
1962 1963
		    RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
		break;
1964
	default:
1965
		IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1966
		break;
Z
Zhu Yi 已提交
1967 1968 1969 1970 1971 1972
	}

#if 0
	/* TODO:  Figure out when short_preamble would be set and cache from
	 * that */
	if (!hw_to_local(priv->hw)->short_preamble)
1973
		priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
1974
	else
1975
		priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
1976 1977
#endif

1978
	ch_info = iwl3945_get_channel_info(priv, priv->band,
1979
				       le16_to_cpu(priv->active39_rxon.channel));
Z
Zhu Yi 已提交
1980 1981 1982 1983 1984 1985 1986 1987

	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
	 */
1988
	if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
Z
Zhu Yi 已提交
1989 1990
		ch_info = &priv->channel_info[0];

1991
	priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
Z
Zhu Yi 已提交
1992
	if (is_channel_a_band(ch_info))
1993
		priv->band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
1994
	else
1995
		priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
1996

1997
	iwl3945_set_flags_for_phymode(priv, priv->band);
Z
Zhu Yi 已提交
1998

1999
	priv->staging39_rxon.ofdm_basic_rates =
Z
Zhu Yi 已提交
2000
	    (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2001
	priv->staging39_rxon.cck_basic_rates =
Z
Zhu Yi 已提交
2002 2003 2004
	    (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
}

2005
static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
Z
Zhu Yi 已提交
2006
{
2007
	if (mode == NL80211_IFTYPE_ADHOC) {
2008
		const struct iwl_channel_info *ch_info;
Z
Zhu Yi 已提交
2009

C
Christoph Hellwig 已提交
2010
		ch_info = iwl3945_get_channel_info(priv,
2011
			priv->band,
2012
			le16_to_cpu(priv->staging39_rxon.channel));
Z
Zhu Yi 已提交
2013 2014

		if (!ch_info || !is_channel_ibss(ch_info)) {
2015
			IWL_ERR(priv, "channel %d not IBSS channel\n",
2016
				  le16_to_cpu(priv->staging39_rxon.channel));
Z
Zhu Yi 已提交
2017 2018 2019 2020
			return -EINVAL;
		}
	}

2021
	iwl3945_connection_init_rx_config(priv, mode);
2022
	memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
Z
Zhu Yi 已提交
2023

C
Christoph Hellwig 已提交
2024
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
2025

T
Tomas Winkler 已提交
2026
	/* don't commit rxon if rf-kill is on*/
2027
	if (!iwl_is_ready_rf(priv))
2028 2029 2030 2031
		return -EAGAIN;

	cancel_delayed_work(&priv->scan_check);
	if (iwl3945_scan_cancel_timeout(priv, 100)) {
2032
		IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2033 2034 2035 2036
		IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
		return -EAGAIN;
	}

C
Christoph Hellwig 已提交
2037
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
2038 2039 2040 2041

	return 0;
}

2042
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2043
				      struct ieee80211_tx_info *info,
2044
				      struct iwl_cmd *cmd,
Z
Zhu Yi 已提交
2045 2046 2047
				      struct sk_buff *skb_frag,
				      int last_frag)
{
2048
	struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
2049
	struct iwl3945_hw_key *keyinfo =
2050
	    &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
Z
Zhu Yi 已提交
2051 2052 2053

	switch (keyinfo->alg) {
	case ALG_CCMP:
2054 2055
		tx->sec_ctl = TX_CMD_SEC_CCM;
		memcpy(tx->key, keyinfo->key, keyinfo->keylen);
T
Tomas Winkler 已提交
2056
		IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
Z
Zhu Yi 已提交
2057 2058 2059 2060
		break;

	case ALG_TKIP:
#if 0
2061
		tx->sec_ctl = TX_CMD_SEC_TKIP;
Z
Zhu Yi 已提交
2062 2063

		if (last_frag)
2064
			memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
Z
Zhu Yi 已提交
2065 2066
			       8);
		else
2067
			memset(tx->tkip_mic.byte, 0, 8);
Z
Zhu Yi 已提交
2068 2069 2070 2071
#endif
		break;

	case ALG_WEP:
2072
		tx->sec_ctl = TX_CMD_SEC_WEP |
2073
		    (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
Z
Zhu Yi 已提交
2074 2075

		if (keyinfo->keylen == 13)
2076
			tx->sec_ctl |= TX_CMD_SEC_KEY128;
Z
Zhu Yi 已提交
2077

2078
		memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
Z
Zhu Yi 已提交
2079 2080

		IWL_DEBUG_TX("Configuring packet for WEP encryption "
2081
			     "with key %d\n", info->control.hw_key->hw_key_idx);
Z
Zhu Yi 已提交
2082 2083 2084
		break;

	default:
T
Tomas Winkler 已提交
2085
		IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
Z
Zhu Yi 已提交
2086 2087 2088 2089 2090 2091 2092
		break;
	}
}

/*
 * handle build REPLY_TX command notification.
 */
2093
static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
2094
				  struct iwl_cmd *cmd,
2095
				  struct ieee80211_tx_info *info,
2096
				  struct ieee80211_hdr *hdr, u8 std_id)
Z
Zhu Yi 已提交
2097
{
2098 2099
	struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
	__le32 tx_flags = tx->tx_flags;
2100
	__le16 fc = hdr->frame_control;
2101
	u8 rc_flags = info->control.rates[0].flags;
Z
Zhu Yi 已提交
2102

2103
	tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2104
	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
Z
Zhu Yi 已提交
2105
		tx_flags |= TX_CMD_FLG_ACK_MSK;
2106
		if (ieee80211_is_mgmt(fc))
Z
Zhu Yi 已提交
2107
			tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2108
		if (ieee80211_is_probe_resp(fc) &&
Z
Zhu Yi 已提交
2109 2110 2111 2112 2113 2114 2115
		    !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
			tx_flags |= TX_CMD_FLG_TSF_MSK;
	} else {
		tx_flags &= (~TX_CMD_FLG_ACK_MSK);
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
	}

2116
	tx->sta_id = std_id;
2117
	if (ieee80211_has_morefrags(fc))
Z
Zhu Yi 已提交
2118 2119
		tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;

2120 2121
	if (ieee80211_is_data_qos(fc)) {
		u8 *qc = ieee80211_get_qos_ctl(hdr);
2122
		tx->tid_tspec = qc[0] & 0xf;
Z
Zhu Yi 已提交
2123
		tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2124
	} else {
Z
Zhu Yi 已提交
2125
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2126
	}
Z
Zhu Yi 已提交
2127

2128
	if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
Z
Zhu Yi 已提交
2129 2130
		tx_flags |= TX_CMD_FLG_RTS_MSK;
		tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2131
	} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
Z
Zhu Yi 已提交
2132 2133 2134 2135 2136 2137 2138 2139
		tx_flags &= ~TX_CMD_FLG_RTS_MSK;
		tx_flags |= TX_CMD_FLG_CTS_MSK;
	}

	if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
		tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;

	tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2140 2141
	if (ieee80211_is_mgmt(fc)) {
		if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2142
			tx->timeout.pm_frame_timeout = cpu_to_le16(3);
Z
Zhu Yi 已提交
2143
		else
2144
			tx->timeout.pm_frame_timeout = cpu_to_le16(2);
M
Mohamed Abbas 已提交
2145
	} else {
2146
		tx->timeout.pm_frame_timeout = 0;
M
Mohamed Abbas 已提交
2147 2148 2149 2150
#ifdef CONFIG_IWL3945_LEDS
		priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
#endif
	}
Z
Zhu Yi 已提交
2151

2152 2153 2154
	tx->driver_txop = 0;
	tx->tx_flags = tx_flags;
	tx->next_frame_len = 0;
Z
Zhu Yi 已提交
2155 2156
}

2157 2158 2159
/**
 * iwl3945_get_sta_id - Find station's index within station table
 */
2160
static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
Z
Zhu Yi 已提交
2161 2162 2163 2164
{
	int sta_id;
	u16 fc = le16_to_cpu(hdr->frame_control);

2165
	/* If this frame is broadcast or management, use broadcast station id */
Z
Zhu Yi 已提交
2166 2167
	if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
	    is_multicast_ether_addr(hdr->addr1))
2168
		return priv->hw_params.bcast_sta_id;
Z
Zhu Yi 已提交
2169 2170 2171

	switch (priv->iw_mode) {

2172 2173
	/* If we are a client station in a BSS network, use the special
	 * AP station entry (that's the only station we communicate with) */
2174
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
2175 2176 2177
		return IWL_AP_ID;

	/* If we are an AP, then find the station, or use BCAST */
2178
	case NL80211_IFTYPE_AP:
C
Christoph Hellwig 已提交
2179
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2180 2181
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
2182
		return priv->hw_params.bcast_sta_id;
Z
Zhu Yi 已提交
2183

2184 2185
	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
2186
	case NL80211_IFTYPE_ADHOC: {
2187
		/* Create new station table entry */
C
Christoph Hellwig 已提交
2188
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2189 2190 2191
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

C
Christoph Hellwig 已提交
2192
		sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Z
Zhu Yi 已提交
2193 2194 2195 2196

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

J
Johannes Berg 已提交
2197
		IWL_DEBUG_DROP("Station %pM not in station map. "
Z
Zhu Yi 已提交
2198
			       "Defaulting to broadcast...\n",
J
Johannes Berg 已提交
2199
			       hdr->addr1);
2200
		iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2201
		return priv->hw_params.bcast_sta_id;
2202
	}
2203 2204
	/* If we are in monitor mode, use BCAST. This is required for
	 * packet injection. */
2205
	case NL80211_IFTYPE_MONITOR:
2206
		return priv->hw_params.bcast_sta_id;
2207

Z
Zhu Yi 已提交
2208
	default:
2209 2210
		IWL_WARN(priv, "Unknown mode of operation: %d\n",
			priv->iw_mode);
2211
		return priv->hw_params.bcast_sta_id;
Z
Zhu Yi 已提交
2212 2213 2214 2215 2216 2217
	}
}

/*
 * start REPLY_TX command process
 */
2218
static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
Z
Zhu Yi 已提交
2219 2220
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2221
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
W
Winkler, Tomas 已提交
2222
	struct iwl3945_tfd *tfd;
2223
	struct iwl3945_tx_cmd *tx;
2224
	struct iwl_tx_queue *txq = NULL;
2225
	struct iwl_queue *q = NULL;
2226
	struct iwl_cmd *out_cmd = NULL;
Z
Zhu Yi 已提交
2227 2228
	dma_addr_t phys_addr;
	dma_addr_t txcmd_phys;
2229
	int txq_id = skb_get_queue_mapping(skb);
2230 2231 2232
	u16 len, idx, len_org, hdr_len;
	u8 id;
	u8 unicast;
Z
Zhu Yi 已提交
2233
	u8 sta_id;
2234
	u8 tid = 0;
Z
Zhu Yi 已提交
2235
	u16 seq_number = 0;
2236
	__le16 fc;
Z
Zhu Yi 已提交
2237
	u8 wait_write_ptr = 0;
2238
	u8 *qc = NULL;
Z
Zhu Yi 已提交
2239 2240 2241 2242
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&priv->lock, flags);
2243
	if (iwl_is_rfkill(priv)) {
Z
Zhu Yi 已提交
2244 2245 2246 2247
		IWL_DEBUG_DROP("Dropping - RF KILL\n");
		goto drop_unlock;
	}

2248
	if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
2249
		IWL_ERR(priv, "ERROR: No TX rate available.\n");
Z
Zhu Yi 已提交
2250 2251 2252 2253 2254 2255
		goto drop_unlock;
	}

	unicast = !is_multicast_ether_addr(hdr->addr1);
	id = 0;

2256
	fc = hdr->frame_control;
Z
Zhu Yi 已提交
2257

2258
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
2259 2260
	if (ieee80211_is_auth(fc))
		IWL_DEBUG_TX("Sending AUTH frame\n");
2261
	else if (ieee80211_is_assoc_req(fc))
Z
Zhu Yi 已提交
2262
		IWL_DEBUG_TX("Sending ASSOC frame\n");
2263
	else if (ieee80211_is_reassoc_req(fc))
Z
Zhu Yi 已提交
2264 2265 2266
		IWL_DEBUG_TX("Sending REASSOC frame\n");
#endif

2267
	/* drop all data frame if we are not associated */
2268
	if (ieee80211_is_data(fc) &&
2269
	    (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2270
	    (!iwl3945_is_associated(priv) ||
2271
	     ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
C
Christoph Hellwig 已提交
2272
		IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
Z
Zhu Yi 已提交
2273 2274 2275 2276 2277
		goto drop_unlock;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

2278
	hdr_len = ieee80211_hdrlen(fc);
2279 2280

	/* Find (or create) index into station table for destination station */
C
Christoph Hellwig 已提交
2281
	sta_id = iwl3945_get_sta_id(priv, hdr);
Z
Zhu Yi 已提交
2282
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
2283 2284
		IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
			       hdr->addr1);
Z
Zhu Yi 已提交
2285 2286 2287 2288 2289
		goto drop;
	}

	IWL_DEBUG_RATE("station Id %d\n", sta_id);

2290 2291
	if (ieee80211_is_data_qos(fc)) {
		qc = ieee80211_get_qos_ctl(hdr);
2292
		tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
2293
		seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
Z
Zhu Yi 已提交
2294 2295 2296 2297 2298 2299
				IEEE80211_SCTL_SEQ;
		hdr->seq_ctrl = cpu_to_le16(seq_number) |
			(hdr->seq_ctrl &
				__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
		seq_number += 0x10;
	}
2300 2301

	/* Descriptor for chosen Tx queue */
2302
	txq = &priv->txq[txq_id];
Z
Zhu Yi 已提交
2303 2304 2305 2306
	q = &txq->q;

	spin_lock_irqsave(&priv->lock, flags);

2307
	/* Set up first empty TFD within this queue's circular TFD buffer */
2308
	tfd = &txq->tfds39[q->write_ptr];
Z
Zhu Yi 已提交
2309
	memset(tfd, 0, sizeof(*tfd));
2310
	idx = get_cmd_index(q, q->write_ptr, 0);
Z
Zhu Yi 已提交
2311

2312
	/* Set up driver data for this TFD */
W
Winkler, Tomas 已提交
2313
	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
2314
	txq->txb[q->write_ptr].skb[0] = skb;
2315 2316

	/* Init first empty entry in queue's array of Tx/cmd buffers */
2317
	out_cmd = txq->cmd[idx];
2318
	tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
Z
Zhu Yi 已提交
2319
	memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2320
	memset(tx, 0, sizeof(*tx));
2321 2322 2323 2324 2325 2326 2327

	/*
	 * Set up the Tx-command (not MAC!) header.
	 * Store the chosen Tx queue and TFD index within the sequence field;
	 * after Tx, uCode's Tx response will return this value so driver can
	 * locate the frame within the tx queue and do post-tx processing.
	 */
Z
Zhu Yi 已提交
2328 2329
	out_cmd->hdr.cmd = REPLY_TX;
	out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2330
				INDEX_TO_SEQ(q->write_ptr)));
2331 2332

	/* Copy MAC header from skb into command buffer */
2333
	memcpy(tx->hdr, hdr, hdr_len);
Z
Zhu Yi 已提交
2334

2335 2336 2337 2338 2339 2340 2341 2342 2343
	/*
	 * Use the first empty entry in this queue's command buffer array
	 * to contain the Tx command and MAC header concatenated together
	 * (payload data will be in another buffer).
	 * Size of this varies, due to varying MAC header length.
	 * If end is not dword aligned, we'll have 2 extra bytes at the end
	 * of the MAC header (device reads on dword boundaries).
	 * We'll tell device about this padding later.
	 */
2344
	len = sizeof(struct iwl3945_tx_cmd) +
2345
			sizeof(struct iwl_cmd_header) + hdr_len;
Z
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2346 2347 2348 2349 2350 2351 2352 2353 2354

	len_org = len;
	len = (len + 3) & ~3;

	if (len_org != len)
		len_org = 1;
	else
		len_org = 0;

2355 2356
	/* Physical address of this Tx command's header (not MAC header!),
	 * within command buffer array. */
2357 2358 2359 2360 2361 2362 2363 2364
	txcmd_phys = pci_map_single(priv->pci_dev,
				    out_cmd, sizeof(struct iwl_cmd),
				    PCI_DMA_TODEVICE);
	pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
	pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
	txcmd_phys += offsetof(struct iwl_cmd, hdr);
Z
Zhu Yi 已提交
2365

2366 2367
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
C
Christoph Hellwig 已提交
2368
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Z
Zhu Yi 已提交
2369

2370
	if (info->control.hw_key)
2371
		iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
Z
Zhu Yi 已提交
2372

2373 2374
	/* Set up TFD's 2nd entry to point directly to remainder of skb,
	 * if any (802.11 null frames have no payload). */
Z
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2375 2376 2377 2378
	len = skb->len - hdr_len;
	if (len) {
		phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
					   len, PCI_DMA_TODEVICE);
C
Christoph Hellwig 已提交
2379
		iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Z
Zhu Yi 已提交
2380 2381 2382
	}

	if (!len)
2383
		/* If there is no payload, then we use only one Tx buffer */
W
Winkler, Tomas 已提交
2384
		tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(1));
Z
Zhu Yi 已提交
2385
	else
2386 2387
		/* Else use 2 buffers.
		 * Tell 3945 about any padding after MAC header */
W
Winkler, Tomas 已提交
2388 2389
		tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(2) |
			TFD_CTL_PAD_SET(U32_PAD(len)));
Z
Zhu Yi 已提交
2390

2391
	/* Total # bytes to be transmitted */
Z
Zhu Yi 已提交
2392
	len = (u16)skb->len;
2393
	tx->len = cpu_to_le16(len);
Z
Zhu Yi 已提交
2394 2395

	/* TODO need this for burst mode later on */
2396
	iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
Z
Zhu Yi 已提交
2397 2398

	/* set is_hcca to 0; it probably will never be implemented */
2399
	iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
Z
Zhu Yi 已提交
2400

2401 2402
	tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
	tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
Z
Zhu Yi 已提交
2403

2404
	if (!ieee80211_has_morefrags(hdr->frame_control)) {
Z
Zhu Yi 已提交
2405
		txq->need_update = 1;
2406
		if (qc)
2407
			priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
Z
Zhu Yi 已提交
2408 2409 2410 2411 2412
	} else {
		wait_write_ptr = 1;
		txq->need_update = 0;
	}

2413
	iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
Z
Zhu Yi 已提交
2414

2415
	iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
2416
			   ieee80211_hdrlen(fc));
Z
Zhu Yi 已提交
2417

2418
	/* Tell device the write index *just past* this latest filled TFD */
T
Tomas Winkler 已提交
2419
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
2420
	rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2421 2422 2423 2424 2425
	spin_unlock_irqrestore(&priv->lock, flags);

	if (rc)
		return rc;

2426
	if ((iwl_queue_space(q) < q->high_mark)
Z
Zhu Yi 已提交
2427 2428 2429 2430
	    && priv->mac80211_registered) {
		if (wait_write_ptr) {
			spin_lock_irqsave(&priv->lock, flags);
			txq->need_update = 1;
C
Christoph Hellwig 已提交
2431
			iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2432 2433 2434
			spin_unlock_irqrestore(&priv->lock, flags);
		}

2435
		ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
Z
Zhu Yi 已提交
2436 2437 2438 2439 2440 2441 2442 2443 2444 2445
	}

	return 0;

drop_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
drop:
	return -1;
}

2446
static void iwl3945_set_rate(struct iwl_priv *priv)
Z
Zhu Yi 已提交
2447
{
2448
	const struct ieee80211_supported_band *sband = NULL;
Z
Zhu Yi 已提交
2449 2450 2451
	struct ieee80211_rate *rate;
	int i;

K
Kolekar, Abhijeet 已提交
2452
	sband = iwl_get_hw_mode(priv, priv->band);
2453
	if (!sband) {
2454
		IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
2455 2456
		return;
	}
Z
Zhu Yi 已提交
2457 2458 2459 2460

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

2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471
	IWL_DEBUG_RATE("Setting rates for %s GHz\n",
		       sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");

	for (i = 0; i < sband->n_bitrates; i++) {
		rate = &sband->bitrates[i];
		if ((rate->hw_value < IWL_RATE_COUNT) &&
		    !(rate->flags & IEEE80211_CHAN_DISABLED)) {
			IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
				       rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
			priv->active_rate |= (1 << rate->hw_value);
		}
Z
Zhu Yi 已提交
2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482
	}

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

	/*
	 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
	 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
	 * OFDM
	 */
	if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2483
		priv->staging39_rxon.cck_basic_rates =
Z
Zhu Yi 已提交
2484 2485 2486
		    ((priv->active_rate_basic &
		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
	else
2487
		priv->staging39_rxon.cck_basic_rates =
Z
Zhu Yi 已提交
2488 2489 2490
		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

	if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2491
		priv->staging39_rxon.ofdm_basic_rates =
Z
Zhu Yi 已提交
2492 2493 2494 2495
		    ((priv->active_rate_basic &
		      (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
		      IWL_FIRST_OFDM_RATE) & 0xFF;
	else
2496
		priv->staging39_rxon.ofdm_basic_rates =
Z
Zhu Yi 已提交
2497 2498 2499
		   (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
}

2500
static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
Z
Zhu Yi 已提交
2501 2502 2503 2504 2505 2506 2507 2508 2509 2510
{
	unsigned long flags;

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

	IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
			  disable_radio ? "OFF" : "ON");

	if (disable_radio) {
C
Christoph Hellwig 已提交
2511
		iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2512
		/* FIXME: This is a workaround for AP */
2513
		if (priv->iw_mode != NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
2514
			spin_lock_irqsave(&priv->lock, flags);
2515
			iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
2516 2517
				    CSR_UCODE_SW_BIT_RFKILL);
			spin_unlock_irqrestore(&priv->lock, flags);
2518
			iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Z
Zhu Yi 已提交
2519 2520 2521 2522 2523 2524
			set_bit(STATUS_RF_KILL_SW, &priv->status);
		}
		return;
	}

	spin_lock_irqsave(&priv->lock, flags);
2525
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
2526 2527 2528 2529 2530 2531 2532 2533

	clear_bit(STATUS_RF_KILL_SW, &priv->status);
	spin_unlock_irqrestore(&priv->lock, flags);

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

	spin_lock_irqsave(&priv->lock, flags);
2534 2535 2536
	iwl_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl_grab_nic_access(priv))
		iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
2537 2538 2539 2540 2541 2542 2543 2544
	spin_unlock_irqrestore(&priv->lock, flags);

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

2545 2546
	if (priv->is_open)
		queue_work(priv->workqueue, &priv->restart);
Z
Zhu Yi 已提交
2547 2548 2549
	return;
}

2550
void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
Z
Zhu Yi 已提交
2551 2552 2553 2554 2555
			    u32 decrypt_res, struct ieee80211_rx_status *stats)
{
	u16 fc =
	    le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);

2556
	if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
Z
Zhu Yi 已提交
2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581
		return;

	if (!(fc & IEEE80211_FCTL_PROTECTED))
		return;

	IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
	switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
	case RX_RES_STATUS_SEC_TYPE_TKIP:
		if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
		    RX_RES_STATUS_BAD_ICV_MIC)
			stats->flag |= RX_FLAG_MMIC_ERROR;
	case RX_RES_STATUS_SEC_TYPE_WEP:
	case RX_RES_STATUS_SEC_TYPE_CCMP:
		if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
		    RX_RES_STATUS_DECRYPT_OK) {
			IWL_DEBUG_RX("hw decrypt successfully!!!\n");
			stats->flag |= RX_FLAG_DECRYPTED;
		}
		break;

	default:
		break;
	}
}

2582
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596

#include "iwl-spectrum.h"

#define BEACON_TIME_MASK_LOW	0x00FFFFFF
#define BEACON_TIME_MASK_HIGH	0xFF000000
#define TIME_UNIT		1024

/*
 * extended beacon time format
 * time in usec will be changed into a 32-bit value in 8:24 format
 * the high 1 byte is the beacon counts
 * the lower 3 bytes is the time in usec within one beacon interval
 */

C
Christoph Hellwig 已提交
2597
static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Z
Zhu Yi 已提交
2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615
{
	u32 quot;
	u32 rem;
	u32 interval = beacon_interval * 1024;

	if (!interval || !usec)
		return 0;

	quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
	rem = (usec % interval) & BEACON_TIME_MASK_LOW;

	return (quot << 24) + rem;
}

/* base is usually what we get from ucode with each received frame,
 * the same as HW timer counter counting down
 */

C
Christoph Hellwig 已提交
2616
static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Z
Zhu Yi 已提交
2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634
{
	u32 base_low = base & BEACON_TIME_MASK_LOW;
	u32 addon_low = addon & BEACON_TIME_MASK_LOW;
	u32 interval = beacon_interval * TIME_UNIT;
	u32 res = (base & BEACON_TIME_MASK_HIGH) +
	    (addon & BEACON_TIME_MASK_HIGH);

	if (base_low > addon_low)
		res += base_low - addon_low;
	else if (base_low < addon_low) {
		res += interval + base_low - addon_low;
		res += (1 << 24);
	} else
		res += (1 << 24);

	return cpu_to_le32(res);
}

2635
static int iwl3945_get_measurement(struct iwl_priv *priv,
Z
Zhu Yi 已提交
2636 2637 2638
			       struct ieee80211_measurement_params *params,
			       u8 type)
{
2639
	struct iwl_spectrum_cmd spectrum;
2640
	struct iwl_rx_packet *res;
2641
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
2642 2643 2644 2645 2646 2647 2648 2649 2650
		.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
		.data = (void *)&spectrum,
		.meta.flags = CMD_WANT_SKB,
	};
	u32 add_time = le64_to_cpu(params->start_time);
	int rc;
	int spectrum_resp_status;
	int duration = le16_to_cpu(params->duration);

C
Christoph Hellwig 已提交
2651
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
2652
		add_time =
C
Christoph Hellwig 已提交
2653
		    iwl3945_usecs_to_beacons(
Z
Zhu Yi 已提交
2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665
			le64_to_cpu(params->start_time) - priv->last_tsf,
			le16_to_cpu(priv->rxon_timing.beacon_interval));

	memset(&spectrum, 0, sizeof(spectrum));

	spectrum.channel_count = cpu_to_le16(1);
	spectrum.flags =
	    RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
	spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
	cmd.len = sizeof(spectrum);
	spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));

C
Christoph Hellwig 已提交
2666
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
2667
		spectrum.start_time =
C
Christoph Hellwig 已提交
2668
		    iwl3945_add_beacon_time(priv->last_beacon_time,
Z
Zhu Yi 已提交
2669 2670 2671 2672 2673 2674 2675 2676
				add_time,
				le16_to_cpu(priv->rxon_timing.beacon_interval));
	else
		spectrum.start_time = 0;

	spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
	spectrum.channels[0].channel = params->channel;
	spectrum.channels[0].type = type;
2677
	if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
Z
Zhu Yi 已提交
2678 2679 2680
		spectrum.flags |= RXON_FLG_BAND_24G_MSK |
		    RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;

C
Christoph Hellwig 已提交
2681
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
2682 2683 2684
	if (rc)
		return rc;

2685
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
2686
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2687
		IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
Z
Zhu Yi 已提交
2688 2689 2690 2691 2692 2693 2694
		rc = -EIO;
	}

	spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
	switch (spectrum_resp_status) {
	case 0:		/* Command will be handled */
		if (res->u.spectrum.id != 0xff) {
2695 2696
			IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
						res->u.spectrum.id);
Z
Zhu Yi 已提交
2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713
			priv->measurement_status &= ~MEASUREMENT_READY;
		}
		priv->measurement_status |= MEASUREMENT_ACTIVE;
		rc = 0;
		break;

	case 1:		/* Command will not be handled */
		rc = -EAGAIN;
		break;
	}

	dev_kfree_skb_any(cmd.meta.u.skb);

	return rc;
}
#endif

2714
static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2715
			       struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2716
{
2717 2718
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl_alive_resp *palive;
Z
Zhu Yi 已提交
2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729
	struct delayed_work *pwork;

	palive = &pkt->u.alive_frame;

	IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
		       "0x%01X 0x%01X\n",
		       palive->is_valid, palive->ver_type,
		       palive->ver_subtype);

	if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
		IWL_DEBUG_INFO("Initialization Alive received.\n");
2730 2731
		memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
		       sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2732 2733 2734 2735
		pwork = &priv->init_alive_start;
	} else {
		IWL_DEBUG_INFO("Runtime Alive received.\n");
		memcpy(&priv->card_alive, &pkt->u.alive_frame,
2736
		       sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2737
		pwork = &priv->alive_start;
C
Christoph Hellwig 已提交
2738
		iwl3945_disable_events(priv);
Z
Zhu Yi 已提交
2739 2740 2741 2742 2743 2744 2745 2746
	}

	/* We delay the ALIVE response by 5ms to
	 * give the HW RF Kill time to activate... */
	if (palive->is_valid == UCODE_VALID_OK)
		queue_delayed_work(priv->workqueue, pwork,
				   msecs_to_jiffies(5));
	else
2747
		IWL_WARN(priv, "uCode did not respond OK.\n");
Z
Zhu Yi 已提交
2748 2749
}

2750
static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2751
				 struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2752
{
2753
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
2754 2755 2756 2757 2758

	IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
	return;
}

2759
static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2760
			       struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2761
{
2762
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
2763

2764
	IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
Z
Zhu Yi 已提交
2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
		"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));
}

#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x

2775
static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2776
{
2777
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2778
	struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2779
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
Z
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2780 2781 2782
	IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
		      le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
	rxon->channel = csa->channel;
2783
	priv->staging39_rxon.channel = csa->channel;
Z
Zhu Yi 已提交
2784 2785
}

2786
static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2787
					  struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2788
{
2789
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2790
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2791
	struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
Z
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2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803

	if (!report->state) {
		IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
			  "Spectrum Measure Notification: Start\n");
		return;
	}

	memcpy(&priv->measure_report, report, sizeof(*report));
	priv->measurement_status |= MEASUREMENT_READY;
#endif
}

2804
static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2805
				  struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2806
{
2807
#ifdef CONFIG_IWL3945_DEBUG
2808
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2809
	struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
Z
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2810 2811 2812 2813 2814
	IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}

2815
static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2816
					     struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2817
{
2818
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
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2819 2820 2821
	IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
			"notification for %s:\n",
			le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2822 2823
	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
			   le32_to_cpu(pkt->len));
Z
Zhu Yi 已提交
2824 2825
}

C
Christoph Hellwig 已提交
2826
static void iwl3945_bg_beacon_update(struct work_struct *work)
Z
Zhu Yi 已提交
2827
{
2828 2829
	struct iwl_priv *priv =
		container_of(work, struct iwl_priv, beacon_update);
Z
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2830 2831 2832
	struct sk_buff *beacon;

	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2833
	beacon = ieee80211_beacon_get(priv->hw, priv->vif);
Z
Zhu Yi 已提交
2834 2835

	if (!beacon) {
2836
		IWL_ERR(priv, "update beacon failed\n");
Z
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2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847
		return;
	}

	mutex_lock(&priv->mutex);
	/* new beacon skb is allocated every time; dispose previous.*/
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = beacon;
	mutex_unlock(&priv->mutex);

C
Christoph Hellwig 已提交
2848
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
2849 2850
}

2851
static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2852
				struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2853
{
2854
#ifdef CONFIG_IWL3945_DEBUG
2855
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
C
Christoph Hellwig 已提交
2856
	struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Z
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2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867
	u8 rate = beacon->beacon_notify_hdr.rate;

	IWL_DEBUG_RX("beacon status %x retries %d iss %d "
		"tsf %d %d rate %d\n",
		le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
		beacon->beacon_notify_hdr.failure_frame,
		le32_to_cpu(beacon->ibss_mgr_status),
		le32_to_cpu(beacon->high_tsf),
		le32_to_cpu(beacon->low_tsf), rate);
#endif

2868
	if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
Z
Zhu Yi 已提交
2869 2870 2871 2872 2873
	    (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
		queue_work(priv->workqueue, &priv->beacon_update);
}

/* Service response to REPLY_SCAN_CMD (0x80) */
2874
static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2875
			      struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2876
{
2877
#ifdef CONFIG_IWL3945_DEBUG
2878
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2879 2880
	struct iwl_scanreq_notification *notif =
	    (struct iwl_scanreq_notification *)pkt->u.raw;
Z
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2881 2882 2883 2884 2885 2886

	IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
#endif
}

/* Service SCAN_START_NOTIFICATION (0x82) */
2887
static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2888
				    struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2889
{
2890
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2891 2892
	struct iwl_scanstart_notification *notif =
	    (struct iwl_scanstart_notification *)pkt->u.raw;
Z
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2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903
	priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
	IWL_DEBUG_SCAN("Scan start: "
		       "%d [802.11%s] "
		       "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
		       notif->channel,
		       notif->band ? "bg" : "a",
		       notif->tsf_high,
		       notif->tsf_low, notif->status, notif->beacon_timer);
}

/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2904
static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2905
				      struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2906
{
2907
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2908 2909
	struct iwl_scanresults_notification *notif =
	    (struct iwl_scanresults_notification *)pkt->u.raw;
Z
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2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924

	IWL_DEBUG_SCAN("Scan ch.res: "
		       "%d [802.11%s] "
		       "(TSF: 0x%08X:%08X) - %d "
		       "elapsed=%lu usec (%dms since last)\n",
		       notif->channel,
		       notif->band ? "bg" : "a",
		       le32_to_cpu(notif->tsf_high),
		       le32_to_cpu(notif->tsf_low),
		       le32_to_cpu(notif->statistics[0]),
		       le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
		       jiffies_to_msecs(elapsed_jiffies
					(priv->last_scan_jiffies, jiffies)));

	priv->last_scan_jiffies = jiffies;
2925
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
2926 2927 2928
}

/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2929
static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2930
				       struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2931
{
2932
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2933
	struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
Z
Zhu Yi 已提交
2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946

	IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
		       scan_notif->scanned_channels,
		       scan_notif->tsf_low,
		       scan_notif->tsf_high, scan_notif->status);

	/* The HW is no longer scanning */
	clear_bit(STATUS_SCAN_HW, &priv->status);

	/* The scan completion notification came in, so kill that timer... */
	cancel_delayed_work(&priv->scan_check);

	IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2947 2948
		       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
							"2.4" : "5.2",
Z
Zhu Yi 已提交
2949 2950 2951
		       jiffies_to_msecs(elapsed_jiffies
					(priv->scan_pass_start, jiffies)));

2952 2953 2954 2955 2956 2957 2958
	/* Remove this scanned band from the list of pending
	 * bands to scan, band G precedes A in order of scanning
	 * as seen in iwl3945_bg_request_scan */
	if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
		priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
	else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
		priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
Z
Zhu Yi 已提交
2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972

	/* If a request to abort was given, or the scan did not succeed
	 * then we reset the scan state machine and terminate,
	 * re-queuing another scan if one has been requested */
	if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
		IWL_DEBUG_INFO("Aborted scan completed.\n");
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
	} else {
		/* If there are more bands on this scan pass reschedule */
		if (priv->scan_bands > 0)
			goto reschedule;
	}

	priv->last_scan_jiffies = jiffies;
2973
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991
	IWL_DEBUG_INFO("Setting scan to off\n");

	clear_bit(STATUS_SCANNING, &priv->status);

	IWL_DEBUG_INFO("Scan took %dms\n",
		jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));

	queue_work(priv->workqueue, &priv->scan_completed);

	return;

reschedule:
	priv->scan_pass_start = jiffies;
	queue_work(priv->workqueue, &priv->request_scan);
}

/* Handle notification from uCode that card's power state is changing
 * due to software, hardware, or critical temperature RFKILL */
2992
static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
2993
				    struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2994
{
2995
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
2996 2997 2998 2999 3000 3001 3002
	u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
	unsigned long status = priv->status;

	IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
			  (flags & HW_CARD_DISABLED) ? "Kill" : "On",
			  (flags & SW_CARD_DISABLED) ? "Kill" : "On");

3003
	iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	if (flags & HW_CARD_DISABLED)
		set_bit(STATUS_RF_KILL_HW, &priv->status);
	else
		clear_bit(STATUS_RF_KILL_HW, &priv->status);


	if (flags & SW_CARD_DISABLED)
		set_bit(STATUS_RF_KILL_SW, &priv->status);
	else
		clear_bit(STATUS_RF_KILL_SW, &priv->status);

C
Christoph Hellwig 已提交
3017
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028

	if ((test_bit(STATUS_RF_KILL_HW, &status) !=
	     test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
	    (test_bit(STATUS_RF_KILL_SW, &status) !=
	     test_bit(STATUS_RF_KILL_SW, &priv->status)))
		queue_work(priv->workqueue, &priv->rf_kill);
	else
		wake_up_interruptible(&priv->wait_command_queue);
}

/**
C
Christoph Hellwig 已提交
3029
 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Z
Zhu Yi 已提交
3030 3031 3032 3033 3034 3035 3036
 *
 * Setup the RX handlers for each of the reply types sent from the uCode
 * to the host.
 *
 * This function chains into the hardware specific files for them to setup
 * any hardware specific handlers as well.
 */
3037
static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3038
{
C
Christoph Hellwig 已提交
3039 3040 3041 3042
	priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
	priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
	priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
	priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
Z
Zhu Yi 已提交
3043
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3044 3045
	    iwl3945_rx_spectrum_measure_notif;
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Z
Zhu Yi 已提交
3046
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
C
Christoph Hellwig 已提交
3047 3048
	    iwl3945_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Z
Zhu Yi 已提交
3049

3050 3051 3052 3053
	/*
	 * The same handler is used for both the REPLY to a discrete
	 * statistics request from the host as well as for the periodic
	 * statistics notifications (after received beacons) from the uCode.
Z
Zhu Yi 已提交
3054
	 */
C
Christoph Hellwig 已提交
3055 3056
	priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
	priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
Z
Zhu Yi 已提交
3057

C
Christoph Hellwig 已提交
3058 3059
	priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
	priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
Z
Zhu Yi 已提交
3060
	priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
C
Christoph Hellwig 已提交
3061
	    iwl3945_rx_scan_results_notif;
Z
Zhu Yi 已提交
3062
	priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3063 3064
	    iwl3945_rx_scan_complete_notif;
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Z
Zhu Yi 已提交
3065

3066
	/* Set up hardware specific Rx handlers */
C
Christoph Hellwig 已提交
3067
	iwl3945_hw_rx_handler_setup(priv);
Z
Zhu Yi 已提交
3068 3069
}

3070 3071 3072 3073 3074
/**
 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
 * When FW advances 'R' index, all entries between old and new 'R' index
 * need to be reclaimed.
 */
3075
static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
3076 3077
				      int txq_id, int index)
{
3078
	struct iwl_tx_queue *txq = &priv->txq[txq_id];
3079
	struct iwl_queue *q = &txq->q;
3080 3081 3082
	int nfreed = 0;

	if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3083
		IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
3084 3085 3086 3087 3088 3089 3090 3091
			  "is out of range [0-%d] %d %d.\n", txq_id,
			  index, q->n_bd, q->write_ptr, q->read_ptr);
		return;
	}

	for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
		q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
		if (nfreed > 1) {
3092
			IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
3093 3094 3095 3096 3097 3098 3099 3100 3101
					q->write_ptr, q->read_ptr);
			queue_work(priv->workqueue, &priv->restart);
			break;
		}
		nfreed++;
	}
}


Z
Zhu Yi 已提交
3102
/**
C
Christoph Hellwig 已提交
3103
 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Z
Zhu Yi 已提交
3104 3105 3106 3107 3108 3109
 * @rxb: Rx buffer to reclaim
 *
 * If an Rx buffer has an async callback associated with it the callback
 * will be executed.  The attached skb (if present) will only be freed
 * if the callback returns 1
 */
3110
static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
3111
				struct iwl_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3112
{
3113
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3114 3115 3116
	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
	int txq_id = SEQ_TO_QUEUE(sequence);
	int index = SEQ_TO_INDEX(sequence);
3117
	int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
Z
Zhu Yi 已提交
3118
	int cmd_index;
3119
	struct iwl_cmd *cmd;
Z
Zhu Yi 已提交
3120 3121 3122

	BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);

3123 3124
	cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
	cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
Z
Zhu Yi 已提交
3125 3126 3127 3128 3129 3130 3131 3132 3133

	/* Input error checking is done when commands are added to queue. */
	if (cmd->meta.flags & CMD_WANT_SKB) {
		cmd->meta.source->u.skb = rxb->skb;
		rxb->skb = NULL;
	} else if (cmd->meta.u.callback &&
		   !cmd->meta.u.callback(priv, cmd, rxb->skb))
		rxb->skb = NULL;

3134
	iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Z
Zhu Yi 已提交
3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163

	if (!(cmd->meta.flags & CMD_ASYNC)) {
		clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
		wake_up_interruptible(&priv->wait_command_queue);
	}
}

/************************** RX-FUNCTIONS ****************************/
/*
 * Rx theory of operation
 *
 * The host allocates 32 DMA target addresses and passes the host address
 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
 * 0 to 31
 *
 * Rx Queue Indexes
 * The host/firmware share two index registers for managing the Rx buffers.
 *
 * The READ index maps to the first position that the firmware may be writing
 * to -- the driver can read up to (but not including) this position and get
 * good data.
 * The READ index is managed by the firmware once the card is enabled.
 *
 * The WRITE index maps to the last position the driver has read from -- the
 * position preceding WRITE is the last slot the firmware can place a packet.
 *
 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
 * WRITE = READ.
 *
3164
 * During initialization, the host sets up the READ queue position to the first
Z
Zhu Yi 已提交
3165 3166
 * INDEX position, and WRITE to the last (READ - 1 wrapped)
 *
3167
 * When the firmware places a packet in a buffer, it will advance the READ index
Z
Zhu Yi 已提交
3168 3169 3170 3171 3172 3173 3174
 * and fire the RX interrupt.  The driver can then query the READ index and
 * process as many packets as possible, moving the WRITE index forward as it
 * resets the Rx queue buffers with new memory.
 *
 * The management in the driver is as follows:
 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
 *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3175
 *   to replenish the iwl->rxq->rx_free.
C
Christoph Hellwig 已提交
3176
 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Z
Zhu Yi 已提交
3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188
 *   iwl->rxq is replenished and the READ INDEX is updated (updating the
 *   'processed' and 'read' driver indexes as well)
 * + A received packet is processed and handed to the kernel network stack,
 *   detached from the iwl->rxq.  The driver 'processed' index is updated.
 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
 *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
 *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
 *   were enough free buffers and RX_STALLED is set it is cleared.
 *
 *
 * Driver sequence:
 *
3189
 * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
C
Christoph Hellwig 已提交
3190
 *                            iwl3945_rx_queue_restock
3191
 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Z
Zhu Yi 已提交
3192 3193
 *                            queue, updates firmware pointers, and updates
 *                            the WRITE index.  If insufficient rx_free buffers
C
Christoph Hellwig 已提交
3194
 *                            are available, schedules iwl3945_rx_replenish
Z
Zhu Yi 已提交
3195 3196
 *
 * -- enable interrupts --
3197
 * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
Z
Zhu Yi 已提交
3198 3199
 *                            READ INDEX, detaching the SKB from the pool.
 *                            Moves the packet buffer from queue to rx_used.
C
Christoph Hellwig 已提交
3200
 *                            Calls iwl3945_rx_queue_restock to refill any empty
Z
Zhu Yi 已提交
3201 3202 3203 3204 3205 3206
 *                            slots.
 * ...
 *
 */

/**
3207
 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Z
Zhu Yi 已提交
3208
 */
3209
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
Z
Zhu Yi 已提交
3210 3211 3212 3213 3214 3215
					  dma_addr_t dma_addr)
{
	return cpu_to_le32((u32)dma_addr);
}

/**
C
Christoph Hellwig 已提交
3216
 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Z
Zhu Yi 已提交
3217
 *
3218
 * If there are slots in the RX queue that need to be restocked,
Z
Zhu Yi 已提交
3219
 * and we have free pre-allocated buffers, fill the ranks as much
3220
 * as we can, pulling from rx_free.
Z
Zhu Yi 已提交
3221 3222 3223 3224 3225
 *
 * This moves the 'write' index forward to catch up with 'processed', and
 * also updates the memory address in the firmware to reference the new
 * target buffer.
 */
3226
static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3227
{
3228
	struct iwl_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3229
	struct list_head *element;
3230
	struct iwl_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3231 3232 3233 3234 3235
	unsigned long flags;
	int write, rc;

	spin_lock_irqsave(&rxq->lock, flags);
	write = rxq->write & ~0x7;
3236
	while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3237
		/* Get next free Rx buffer, remove from free list */
Z
Zhu Yi 已提交
3238
		element = rxq->rx_free.next;
3239
		rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
Z
Zhu Yi 已提交
3240
		list_del(element);
3241 3242

		/* Point to Rx buffer via next RBD in circular buffer */
3243
		rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
Z
Zhu Yi 已提交
3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
		rxq->queue[rxq->write] = rxb;
		rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
		rxq->free_count--;
	}
	spin_unlock_irqrestore(&rxq->lock, flags);
	/* If the pre-allocated buffer pool is dropping low, schedule to
	 * refill it */
	if (rxq->free_count <= RX_LOW_WATERMARK)
		queue_work(priv->workqueue, &priv->rx_replenish);


3255 3256
	/* If we've added more space for the firmware to place data, tell it.
	 * Increment device's write pointer in multiples of 8. */
Z
Zhu Yi 已提交
3257 3258 3259 3260 3261
	if ((write != (rxq->write & ~0x7))
	    || (abs(rxq->write - rxq->read) > 7)) {
		spin_lock_irqsave(&rxq->lock, flags);
		rxq->need_update = 1;
		spin_unlock_irqrestore(&rxq->lock, flags);
3262
		rc = iwl_rx_queue_update_write_ptr(priv, rxq);
Z
Zhu Yi 已提交
3263 3264 3265 3266 3267 3268 3269 3270
		if (rc)
			return rc;
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
3271
 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Z
Zhu Yi 已提交
3272 3273 3274
 *
 * When moving to rx_free an SKB is allocated for the slot.
 *
C
Christoph Hellwig 已提交
3275
 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3276
 * This is called as a scheduled work item (except for during initialization)
Z
Zhu Yi 已提交
3277
 */
3278
static void iwl3945_rx_allocate(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3279
{
3280
	struct iwl_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3281
	struct list_head *element;
3282
	struct iwl_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3283 3284 3285 3286
	unsigned long flags;
	spin_lock_irqsave(&rxq->lock, flags);
	while (!list_empty(&rxq->rx_used)) {
		element = rxq->rx_used.next;
3287
		rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
3288 3289

		/* Alloc a new receive buffer */
Z
Zhu Yi 已提交
3290 3291 3292 3293
		rxb->skb =
		    alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
		if (!rxb->skb) {
			if (net_ratelimit())
T
Tomas Winkler 已提交
3294
				IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
Z
Zhu Yi 已提交
3295 3296 3297 3298 3299
			/* We don't reschedule replenish work here -- we will
			 * call the restock method and if it still needs
			 * more buffers it will schedule replenish */
			break;
		}
Z
Zhu Yi 已提交
3300 3301 3302 3303 3304 3305 3306 3307 3308

		/* If radiotap head is required, reserve some headroom here.
		 * The physical head count is a variable rx_stats->phy_count.
		 * We reserve 4 bytes here. Plus these extra bytes, the
		 * headroom of the physical head should be enough for the
		 * radiotap head that iwl3945 supported. See iwl3945_rt.
		 */
		skb_reserve(rxb->skb, 4);

Z
Zhu Yi 已提交
3309 3310
		priv->alloc_rxb_skb++;
		list_del(element);
3311 3312

		/* Get physical address of RB/SKB */
3313
		rxb->real_dma_addr =
Z
Zhu Yi 已提交
3314 3315 3316 3317 3318 3319
		    pci_map_single(priv->pci_dev, rxb->skb->data,
				   IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
		list_add_tail(&rxb->list, &rxq->rx_free);
		rxq->free_count++;
	}
	spin_unlock_irqrestore(&rxq->lock, flags);
3320 3321 3322 3323 3324
}

/*
 * this should be called while priv->lock is locked
 */
3325
static void __iwl3945_rx_replenish(void *data)
3326
{
3327
	struct iwl_priv *priv = data;
3328 3329 3330 3331 3332 3333 3334 3335

	iwl3945_rx_allocate(priv);
	iwl3945_rx_queue_restock(priv);
}


void iwl3945_rx_replenish(void *data)
{
3336
	struct iwl_priv *priv = data;
3337 3338 3339
	unsigned long flags;

	iwl3945_rx_allocate(priv);
Z
Zhu Yi 已提交
3340 3341

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
3342
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363
	spin_unlock_irqrestore(&priv->lock, flags);
}

/* Convert linear signal-to-noise ratio into dB */
static u8 ratio2dB[100] = {
/*	 0   1   2   3   4   5   6   7   8   9 */
	 0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
	20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
	26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
	29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
	32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
	34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
	36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
	37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
	38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
	39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
};

/* Calculates a relative dB value from a ratio of linear
 *   (i.e. not dB) signal levels.
 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
C
Christoph Hellwig 已提交
3364
int iwl3945_calc_db_from_ratio(int sig_ratio)
Z
Zhu Yi 已提交
3365
{
3366 3367
	/* 1000:1 or higher just report as 60 dB */
	if (sig_ratio >= 1000)
Z
Zhu Yi 已提交
3368 3369
		return 60;

3370
	/* 100:1 or higher, divide by 10 and use table,
Z
Zhu Yi 已提交
3371
	 *   add 20 dB to make up for divide by 10 */
3372
	if (sig_ratio >= 100)
3373
		return 20 + (int)ratio2dB[sig_ratio/10];
Z
Zhu Yi 已提交
3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389

	/* We shouldn't see this */
	if (sig_ratio < 1)
		return 0;

	/* Use table for ratios 1:1 - 99:1 */
	return (int)ratio2dB[sig_ratio];
}

#define PERFECT_RSSI (-20) /* dBm */
#define WORST_RSSI (-95)   /* dBm */
#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)

/* Calculate an indication of rx signal quality (a percentage, not dBm!).
 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
 *   about formulas used below. */
C
Christoph Hellwig 已提交
3390
int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Z
Zhu Yi 已提交
3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
{
	int sig_qual;
	int degradation = PERFECT_RSSI - rssi_dbm;

	/* If we get a noise measurement, use signal-to-noise ratio (SNR)
	 * as indicator; formula is (signal dbm - noise dbm).
	 * SNR at or above 40 is a great signal (100%).
	 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
	 * Weakest usable signal is usually 10 - 15 dB SNR. */
	if (noise_dbm) {
		if (rssi_dbm - noise_dbm >= 40)
			return 100;
		else if (rssi_dbm < noise_dbm)
			return 0;
		sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;

	/* Else use just the signal level.
	 * This formula is a least squares fit of data points collected and
	 *   compared with a reference system that had a percentage (%) display
	 *   for signal quality. */
	} else
		sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
			    (15 * RSSI_RANGE + 62 * degradation)) /
			   (RSSI_RANGE * RSSI_RANGE);

	if (sig_qual > 100)
		sig_qual = 100;
	else if (sig_qual < 1)
		sig_qual = 0;

	return sig_qual;
}

/**
3425
 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Z
Zhu Yi 已提交
3426 3427 3428 3429 3430
 *
 * Uses the priv->rx_handlers callback function array to invoke
 * the appropriate handlers, including command responses,
 * frame-received notifications, and other notifications.
 */
3431
static void iwl3945_rx_handle(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3432
{
3433
	struct iwl_rx_mem_buffer *rxb;
3434
	struct iwl_rx_packet *pkt;
3435
	struct iwl_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3436 3437 3438
	u32 r, i;
	int reclaim;
	unsigned long flags;
3439
	u8 fill_rx = 0;
M
Mohamed Abbas 已提交
3440
	u32 count = 8;
Z
Zhu Yi 已提交
3441

3442 3443
	/* uCode's read index (stored in shared DRAM) indicates the last Rx
	 * buffer that the driver may process (last buffer filled by ucode). */
W
Winkler, Tomas 已提交
3444
	r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
Z
Zhu Yi 已提交
3445 3446
	i = rxq->read;

3447
	if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3448
		fill_rx = 1;
Z
Zhu Yi 已提交
3449 3450 3451 3452 3453 3454 3455
	/* Rx interrupt, but nothing sent from uCode */
	if (i == r)
		IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);

	while (i != r) {
		rxb = rxq->queue[i];

3456
		/* If an RXB doesn't have a Rx queue slot associated with it,
Z
Zhu Yi 已提交
3457 3458 3459 3460 3461 3462
		 * then a bug has been introduced in the queue refilling
		 * routines -- catch it here */
		BUG_ON(rxb == NULL);

		rxq->queue[i] = NULL;

3463
		pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
Z
Zhu Yi 已提交
3464 3465
					    IWL_RX_BUF_SIZE,
					    PCI_DMA_FROMDEVICE);
3466
		pkt = (struct iwl_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479

		/* Reclaim a command buffer only if this packet is a response
		 *   to a (driver-originated) command.
		 * If the packet (e.g. Rx frame) originated from uCode,
		 *   there is no command buffer to reclaim.
		 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
		 *   but apparently a few don't get set; catch them here. */
		reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
			(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
			(pkt->hdr.cmd != REPLY_TX);

		/* Based on type of command response or notification,
		 *   handle those that need handling via function in
C
Christoph Hellwig 已提交
3480
		 *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
Z
Zhu Yi 已提交
3481
		if (priv->rx_handlers[pkt->hdr.cmd]) {
3482
			IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Z
Zhu Yi 已提交
3483 3484 3485 3486 3487
				"r = %d, i = %d, %s, 0x%02x\n", r, i,
				get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
			priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
		} else {
			/* No handling needed */
3488
			IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Z
Zhu Yi 已提交
3489 3490 3491 3492 3493 3494
				"r %d i %d No handler needed for %s, 0x%02x\n",
				r, i, get_cmd_string(pkt->hdr.cmd),
				pkt->hdr.cmd);
		}

		if (reclaim) {
3495 3496
			/* Invoke any callbacks, transfer the skb to caller, and
			 * fire off the (possibly) blocking iwl3945_send_cmd()
Z
Zhu Yi 已提交
3497 3498
			 * as we reclaim the driver command queue */
			if (rxb && rxb->skb)
C
Christoph Hellwig 已提交
3499
				iwl3945_tx_cmd_complete(priv, rxb);
Z
Zhu Yi 已提交
3500
			else
3501
				IWL_WARN(priv, "Claim null rxb?\n");
Z
Zhu Yi 已提交
3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512
		}

		/* For now we just don't re-use anything.  We can tweak this
		 * later to try and re-use notification packets and SKBs that
		 * fail to Rx correctly */
		if (rxb->skb != NULL) {
			priv->alloc_rxb_skb--;
			dev_kfree_skb_any(rxb->skb);
			rxb->skb = NULL;
		}

3513
		pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
Z
Zhu Yi 已提交
3514 3515 3516 3517 3518
				 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
		spin_lock_irqsave(&rxq->lock, flags);
		list_add_tail(&rxb->list, &priv->rxq.rx_used);
		spin_unlock_irqrestore(&rxq->lock, flags);
		i = (i + 1) & RX_QUEUE_MASK;
3519 3520 3521 3522 3523 3524 3525 3526 3527 3528
		/* If there are a lot of unused frames,
		 * restock the Rx queue so ucode won't assert. */
		if (fill_rx) {
			count++;
			if (count >= 8) {
				priv->rxq.read = i;
				__iwl3945_rx_replenish(priv);
				count = 0;
			}
		}
Z
Zhu Yi 已提交
3529 3530 3531 3532
	}

	/* Backtrack one entry */
	priv->rxq.read = i;
C
Christoph Hellwig 已提交
3533
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3534 3535
}

3536 3537 3538
/**
 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
 */
3539
static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
3540
				  struct iwl_tx_queue *txq)
Z
Zhu Yi 已提交
3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553
{
	u32 reg = 0;
	int rc = 0;
	int txq_id = txq->q.id;

	if (txq->need_update == 0)
		return rc;

	/* if we're trying to save power */
	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
		/* wake up nic if it's powered down ...
		 * uCode will wake up, and interrupt us again, so next
		 * time we'll skip this part. */
3554
		reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3555 3556 3557

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
			IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
3558
			iwl_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3559 3560 3561 3562 3563
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			return rc;
		}

		/* restore this queue's parameters in nic hardware. */
3564
		rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
3565 3566
		if (rc)
			return rc;
3567
		iwl_write_direct32(priv, HBUS_TARG_WRPTR,
3568
				     txq->q.write_ptr | (txq_id << 8));
3569
		iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
3570 3571 3572 3573

	/* else not in power-save mode, uCode will never sleep when we're
	 * trying to tx (during RFKILL, we're not trying to tx). */
	} else
3574
		iwl_write32(priv, HBUS_TARG_WRPTR,
3575
			    txq->q.write_ptr | (txq_id << 8));
Z
Zhu Yi 已提交
3576 3577 3578 3579 3580 3581

	txq->need_update = 0;

	return rc;
}

3582
#ifdef CONFIG_IWL3945_DEBUG
3583
static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3584
					struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
3585 3586
{
	IWL_DEBUG_RADIO("RX CONFIG:\n");
3587
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Z
Zhu Yi 已提交
3588 3589 3590 3591 3592 3593 3594 3595
	IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
	IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
	IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
			le32_to_cpu(rxon->filter_flags));
	IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
			rxon->ofdm_basic_rates);
	IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
J
Johannes Berg 已提交
3596 3597
	IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
	IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
Z
Zhu Yi 已提交
3598 3599 3600 3601
	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

3602
static void iwl3945_enable_interrupts(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3603 3604 3605
{
	IWL_DEBUG_ISR("Enabling interrupts\n");
	set_bit(STATUS_INT_ENABLED, &priv->status);
3606
	iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Z
Zhu Yi 已提交
3607 3608
}

3609 3610

/* call this function to flush any scheduled tasklet */
3611
static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3612
{
T
Tomas Winkler 已提交
3613
	/* wait to make sure we flush pending tasklet*/
3614 3615 3616 3617 3618
	synchronize_irq(priv->pci_dev->irq);
	tasklet_kill(&priv->irq_tasklet);
}


3619
static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3620 3621 3622 3623
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
3624
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
3625 3626 3627

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
3628 3629
	iwl_write32(priv, CSR_INT, 0xffffffff);
	iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Z
Zhu Yi 已提交
3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655
	IWL_DEBUG_ISR("Disabled interrupts\n");
}

static const char *desc_lookup(int i)
{
	switch (i) {
	case 1:
		return "FAIL";
	case 2:
		return "BAD_PARAM";
	case 3:
		return "BAD_CHECKSUM";
	case 4:
		return "NMI_INTERRUPT";
	case 5:
		return "SYSASSERT";
	case 6:
		return "FATAL_ERROR";
	}

	return "UNKNOWN";
}

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

3656
static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3657 3658 3659 3660 3661 3662 3663 3664
{
	u32 i;
	u32 desc, time, count, base, data1;
	u32 blink1, blink2, ilink1, ilink2;
	int rc;

	base = le32_to_cpu(priv->card_alive.error_event_table_ptr);

C
Christoph Hellwig 已提交
3665
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3666
		IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
Z
Zhu Yi 已提交
3667 3668 3669
		return;
	}

3670
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
3671
	if (rc) {
3672
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
Z
Zhu Yi 已提交
3673 3674 3675
		return;
	}

3676
	count = iwl_read_targ_mem(priv, base);
Z
Zhu Yi 已提交
3677 3678

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3679 3680 3681
		IWL_ERR(priv, "Start IWL Error Log Dump:\n");
		IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
			priv->status, count);
Z
Zhu Yi 已提交
3682 3683
	}

3684
	IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
Z
Zhu Yi 已提交
3685 3686 3687 3688
		  "ilink1  nmiPC   Line\n");
	for (i = ERROR_START_OFFSET;
	     i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
	     i += ERROR_ELEM_SIZE) {
3689
		desc = iwl_read_targ_mem(priv, base + i);
Z
Zhu Yi 已提交
3690
		time =
3691
		    iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Z
Zhu Yi 已提交
3692
		blink1 =
3693
		    iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Z
Zhu Yi 已提交
3694
		blink2 =
3695
		    iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Z
Zhu Yi 已提交
3696
		ilink1 =
3697
		    iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Z
Zhu Yi 已提交
3698
		ilink2 =
3699
		    iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Z
Zhu Yi 已提交
3700
		data1 =
3701
		    iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Z
Zhu Yi 已提交
3702

3703 3704 3705 3706
		IWL_ERR(priv,
			"%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
			desc_lookup(desc), desc, time, blink1, blink2,
			ilink1, ilink2, data1);
Z
Zhu Yi 已提交
3707 3708
	}

3709
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
3710 3711 3712

}

3713
#define EVENT_START_OFFSET  (6 * sizeof(u32))
Z
Zhu Yi 已提交
3714 3715

/**
C
Christoph Hellwig 已提交
3716
 * iwl3945_print_event_log - Dump error event log to syslog
Z
Zhu Yi 已提交
3717
 *
3718
 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
Z
Zhu Yi 已提交
3719
 */
3720
static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
Z
Zhu Yi 已提交
3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743
				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;

	base = le32_to_cpu(priv->card_alive.log_event_table_ptr);

	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++) {
3744
		ev = iwl_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
3745
		ptr += sizeof(u32);
3746
		time = iwl_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
3747
		ptr += sizeof(u32);
3748 3749 3750 3751
		if (mode == 0) {
			/* data, ev */
			IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
		} else {
3752
			data = iwl_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
3753
			ptr += sizeof(u32);
3754
			IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
Z
Zhu Yi 已提交
3755 3756 3757 3758
		}
	}
}

3759
static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3760 3761 3762 3763 3764 3765 3766 3767 3768 3769
{
	int rc;
	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 */

	base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
C
Christoph Hellwig 已提交
3770
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3771
		IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
Z
Zhu Yi 已提交
3772 3773 3774
		return;
	}

3775
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
3776
	if (rc) {
3777
		IWL_WARN(priv, "Can not read from adapter at this time.\n");
Z
Zhu Yi 已提交
3778 3779 3780 3781
		return;
	}

	/* event log header */
3782 3783 3784 3785
	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)));
Z
Zhu Yi 已提交
3786 3787 3788 3789 3790

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
3791
		IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3792
		iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
3793 3794 3795
		return;
	}

3796
	IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
Z
Zhu Yi 已提交
3797 3798 3799 3800 3801
		  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)
C
Christoph Hellwig 已提交
3802
		iwl3945_print_event_log(priv, next_entry,
Z
Zhu Yi 已提交
3803 3804 3805
				    capacity - next_entry, mode);

	/* (then/else) start at top of log */
C
Christoph Hellwig 已提交
3806
	iwl3945_print_event_log(priv, 0, next_entry, mode);
Z
Zhu Yi 已提交
3807

3808
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
3809 3810 3811
}

/**
C
Christoph Hellwig 已提交
3812
 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Z
Zhu Yi 已提交
3813
 */
3814
static void iwl3945_irq_handle_error(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3815
{
C
Christoph Hellwig 已提交
3816
	/* Set the FW error flag -- cleared on iwl3945_down */
Z
Zhu Yi 已提交
3817 3818 3819 3820 3821
	set_bit(STATUS_FW_ERROR, &priv->status);

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

3822
#ifdef CONFIG_IWL3945_DEBUG
3823
	if (priv->debug_level & IWL_DL_FW_ERRORS) {
C
Christoph Hellwig 已提交
3824 3825
		iwl3945_dump_nic_error_log(priv);
		iwl3945_dump_nic_event_log(priv);
3826
		iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
Z
Zhu Yi 已提交
3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839
	}
#endif

	wake_up_interruptible(&priv->wait_command_queue);

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

	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
		IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
			  "Restarting adapter due to uCode error.\n");

C
Christoph Hellwig 已提交
3840
		if (iwl3945_is_associated(priv)) {
3841 3842
			memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
			       sizeof(priv->recovery39_rxon));
Z
Zhu Yi 已提交
3843 3844 3845 3846 3847 3848
			priv->error_recovering = 1;
		}
		queue_work(priv->workqueue, &priv->restart);
	}
}

3849
static void iwl3945_error_recovery(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3850 3851 3852
{
	unsigned long flags;

3853 3854 3855
	memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
	       sizeof(priv->staging39_rxon));
	priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
3856
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
3857

C
Christoph Hellwig 已提交
3858
	iwl3945_add_station(priv, priv->bssid, 1, 0);
Z
Zhu Yi 已提交
3859 3860

	spin_lock_irqsave(&priv->lock, flags);
3861
	priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
Z
Zhu Yi 已提交
3862 3863 3864 3865
	priv->error_recovering = 0;
	spin_unlock_irqrestore(&priv->lock, flags);
}

3866
static void iwl3945_irq_tasklet(struct iwl_priv *priv)
Z
Zhu Yi 已提交
3867 3868 3869 3870
{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
3871
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
3872 3873 3874 3875 3876 3877 3878 3879
	u32 inta_mask;
#endif

	spin_lock_irqsave(&priv->lock, flags);

	/* Ack/clear/reset pending uCode interrupts.
	 * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
	 *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
3880 3881
	inta = iwl_read32(priv, CSR_INT);
	iwl_write32(priv, CSR_INT, inta);
Z
Zhu Yi 已提交
3882 3883 3884 3885

	/* Ack/clear/reset pending flow-handler (DMA) interrupts.
	 * Any new interrupts that happen after this, either while we're
	 * in this tasklet, or later, will show up in next ISR/tasklet. */
3886 3887
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
	iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Z
Zhu Yi 已提交
3888

3889
#ifdef CONFIG_IWL3945_DEBUG
3890
	if (priv->debug_level & IWL_DL_ISR) {
3891
		/* just for debug */
3892
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
Z
Zhu Yi 已提交
3893 3894 3895 3896 3897 3898 3899 3900 3901
		IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
			      inta, inta_mask, inta_fh);
	}
#endif

	/* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
	 * atomic, make sure that inta covers all the interrupts that
	 * we've discovered, even if FH interrupt came in just after
	 * reading CSR_INT. */
T
Tomas Winkler 已提交
3902
	if (inta_fh & CSR39_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
3903
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
3904
	if (inta_fh & CSR39_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
3905 3906 3907 3908
		inta |= CSR_INT_BIT_FH_TX;

	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
3909
		IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
Z
Zhu Yi 已提交
3910 3911

		/* Tell the device to stop sending interrupts */
C
Christoph Hellwig 已提交
3912
		iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
3913

C
Christoph Hellwig 已提交
3914
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
3915 3916 3917 3918 3919 3920 3921 3922

		handled |= CSR_INT_BIT_HW_ERR;

		spin_unlock_irqrestore(&priv->lock, flags);

		return;
	}

3923
#ifdef CONFIG_IWL3945_DEBUG
3924
	if (priv->debug_level & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
3925
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
3926 3927 3928
		if (inta & CSR_INT_BIT_SCD)
			IWL_DEBUG_ISR("Scheduler finished to transmit "
				      "the frame/frames.\n");
Z
Zhu Yi 已提交
3929 3930 3931 3932 3933 3934 3935

		/* Alive notification via Rx interrupt will do the real work */
		if (inta & CSR_INT_BIT_ALIVE)
			IWL_DEBUG_ISR("Alive interrupt\n");
	}
#endif
	/* Safely ignore these bits for debug checks below */
3936
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
3937 3938 3939

	/* Error detected by uCode */
	if (inta & CSR_INT_BIT_SW_ERR) {
3940 3941
		IWL_ERR(priv, "Microcode SW error detected. "
			"Restarting 0x%X.\n", inta);
C
Christoph Hellwig 已提交
3942
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
3943 3944 3945 3946 3947 3948
		handled |= CSR_INT_BIT_SW_ERR;
	}

	/* uCode wakes up after power-down sleep */
	if (inta & CSR_INT_BIT_WAKEUP) {
		IWL_DEBUG_ISR("Wakeup interrupt\n");
3949
		iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3950 3951 3952 3953 3954 3955
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
		iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
Z
Zhu Yi 已提交
3956 3957 3958 3959 3960 3961 3962 3963

		handled |= CSR_INT_BIT_WAKEUP;
	}

	/* All uCode command responses, including Tx command responses,
	 * Rx "responses" (frame-received notification), and other
	 * notifications from uCode come through here*/
	if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
C
Christoph Hellwig 已提交
3964
		iwl3945_rx_handle(priv);
Z
Zhu Yi 已提交
3965 3966 3967 3968 3969 3970
		handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
	}

	if (inta & CSR_INT_BIT_FH_TX) {
		IWL_DEBUG_ISR("Tx interrupt\n");

3971 3972 3973
		iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
		if (!iwl_grab_nic_access(priv)) {
			iwl_write_direct32(priv, FH39_TCSR_CREDIT
3974
					     (FH39_SRVC_CHNL), 0x0);
3975
			iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
3976 3977 3978 3979 3980
		}
		handled |= CSR_INT_BIT_FH_TX;
	}

	if (inta & ~handled)
3981
		IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
Z
Zhu Yi 已提交
3982 3983

	if (inta & ~CSR_INI_SET_MASK) {
3984
		IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
Z
Zhu Yi 已提交
3985
			 inta & ~CSR_INI_SET_MASK);
3986
		IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
Z
Zhu Yi 已提交
3987 3988 3989
	}

	/* Re-enable all interrupts */
3990 3991 3992
	/* only Re-enable if disabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
		iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
3993

3994
#ifdef CONFIG_IWL3945_DEBUG
3995
	if (priv->debug_level & (IWL_DL_ISR)) {
3996 3997 3998
		inta = iwl_read32(priv, CSR_INT);
		inta_mask = iwl_read32(priv, CSR_INT_MASK);
		inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
3999 4000 4001 4002 4003 4004 4005
		IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
			"flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
	}
#endif
	spin_unlock_irqrestore(&priv->lock, flags);
}

C
Christoph Hellwig 已提交
4006
static irqreturn_t iwl3945_isr(int irq, void *data)
Z
Zhu Yi 已提交
4007
{
4008
	struct iwl_priv *priv = data;
Z
Zhu Yi 已提交
4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019
	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. */
4020 4021
	inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4022 4023

	/* Discover which interrupts are active/pending */
4024 4025
	inta = iwl_read32(priv, CSR_INT);
	inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036

	/* 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("Ignore interrupt, inta == 0, inta_fh == 0\n");
		goto none;
	}

	if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
		/* Hardware disappeared */
4037
		IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
4038
		goto unplugged;
Z
Zhu Yi 已提交
4039 4040 4041 4042 4043
	}

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

4044 4045
	inta &= ~CSR_INT_BIT_SCD;

C
Christoph Hellwig 已提交
4046
	/* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4047 4048
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);
4049
unplugged:
Z
Zhu Yi 已提交
4050 4051 4052 4053 4054 4055
	spin_unlock(&priv->lock);

	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
4056 4057 4058
	/* only Re-enable if disabled by irq */
	if (test_bit(STATUS_INT_ENABLED, &priv->status))
		iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
4059 4060 4061 4062 4063 4064
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

/************************** EEPROM BANDS ****************************
 *
C
Christoph Hellwig 已提交
4065
 * The iwl3945_eeprom_band definitions below provide the mapping from the
Z
Zhu Yi 已提交
4066 4067 4068
 * EEPROM contents to the specific channel number supported for each
 * band.
 *
4069
 * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
Z
Zhu Yi 已提交
4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094
 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
 * The specific geography and calibration information for that channel
 * is contained in the eeprom map itself.
 *
 * During init, we copy the eeprom information and channel map
 * information into priv->channel_info_24/52 and priv->channel_map_24/52
 *
 * channel_map_24/52 provides the index in the channel_info array for a
 * given channel.  We have to have two separate maps as there is channel
 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
 * band_2
 *
 * A value of 0xff stored in the channel_map indicates that the channel
 * is not supported by the hardware at all.
 *
 * A value of 0xfe in the channel_map indicates that the channel is not
 * valid for Tx with the current hardware.  This means that
 * while the system can tune and receive on a given channel, it may not
 * be able to associate or transmit any frames on that
 * channel.  There is no corresponding channel information for that
 * entry.
 *
 *********************************************************************/

/* 2.4 GHz */
C
Christoph Hellwig 已提交
4095
static const u8 iwl3945_eeprom_band_1[14] = {
Z
Zhu Yi 已提交
4096 4097 4098 4099
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

/* 5.2 GHz bands */
4100
static const u8 iwl3945_eeprom_band_2[] = {	/* 4915-5080MHz */
Z
Zhu Yi 已提交
4101 4102 4103
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

4104
static const u8 iwl3945_eeprom_band_3[] = {	/* 5170-5320MHz */
Z
Zhu Yi 已提交
4105 4106 4107
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

C
Christoph Hellwig 已提交
4108
static const u8 iwl3945_eeprom_band_4[] = {	/* 5500-5700MHz */
Z
Zhu Yi 已提交
4109 4110 4111
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

C
Christoph Hellwig 已提交
4112
static const u8 iwl3945_eeprom_band_5[] = {	/* 5725-5825MHz */
Z
Zhu Yi 已提交
4113 4114 4115
	145, 149, 153, 157, 161, 165
};

4116
static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
Z
Zhu Yi 已提交
4117
				    int *eeprom_ch_count,
4118
				    const struct iwl_eeprom_channel
Z
Zhu Yi 已提交
4119 4120 4121 4122 4123
				    **eeprom_ch_info,
				    const u8 **eeprom_ch_index)
{
	switch (band) {
	case 1:		/* 2.4GHz band */
C
Christoph Hellwig 已提交
4124
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4125
		*eeprom_ch_info = priv->eeprom39.band_1_channels;
C
Christoph Hellwig 已提交
4126
		*eeprom_ch_index = iwl3945_eeprom_band_1;
Z
Zhu Yi 已提交
4127
		break;
4128
	case 2:		/* 4.9GHz band */
C
Christoph Hellwig 已提交
4129
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4130
		*eeprom_ch_info = priv->eeprom39.band_2_channels;
C
Christoph Hellwig 已提交
4131
		*eeprom_ch_index = iwl3945_eeprom_band_2;
Z
Zhu Yi 已提交
4132 4133
		break;
	case 3:		/* 5.2GHz band */
C
Christoph Hellwig 已提交
4134
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4135
		*eeprom_ch_info = priv->eeprom39.band_3_channels;
C
Christoph Hellwig 已提交
4136
		*eeprom_ch_index = iwl3945_eeprom_band_3;
Z
Zhu Yi 已提交
4137
		break;
4138
	case 4:		/* 5.5GHz band */
C
Christoph Hellwig 已提交
4139
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4140
		*eeprom_ch_info = priv->eeprom39.band_4_channels;
C
Christoph Hellwig 已提交
4141
		*eeprom_ch_index = iwl3945_eeprom_band_4;
Z
Zhu Yi 已提交
4142
		break;
4143
	case 5:		/* 5.7GHz band */
C
Christoph Hellwig 已提交
4144
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4145
		*eeprom_ch_info = priv->eeprom39.band_5_channels;
C
Christoph Hellwig 已提交
4146
		*eeprom_ch_index = iwl3945_eeprom_band_5;
Z
Zhu Yi 已提交
4147 4148 4149 4150 4151 4152 4153
		break;
	default:
		BUG();
		return;
	}
}

4154 4155 4156 4157 4158
/**
 * iwl3945_get_channel_info - Find driver's private channel info
 *
 * Based on band and channel number.
 */
4159
const struct iwl_channel_info *
4160
iwl3945_get_channel_info(const struct iwl_priv *priv,
4161
			 enum ieee80211_band band, u16 channel)
Z
Zhu Yi 已提交
4162 4163 4164
{
	int i;

4165 4166
	switch (band) {
	case IEEE80211_BAND_5GHZ:
Z
Zhu Yi 已提交
4167 4168 4169 4170 4171 4172
		for (i = 14; i < priv->channel_count; i++) {
			if (priv->channel_info[i].channel == channel)
				return &priv->channel_info[i];
		}
		break;

4173
	case IEEE80211_BAND_2GHZ:
Z
Zhu Yi 已提交
4174 4175 4176
		if (channel >= 1 && channel <= 14)
			return &priv->channel_info[channel - 1];
		break;
4177 4178
	case IEEE80211_NUM_BANDS:
		WARN_ON(1);
Z
Zhu Yi 已提交
4179 4180 4181 4182 4183 4184 4185 4186
	}

	return NULL;
}

#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
			    ? # x " " : "")

4187 4188 4189
/**
 * iwl3945_init_channel_map - Set up driver's info for all possible channels
 */
4190
static int iwl3945_init_channel_map(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4191 4192 4193
{
	int eeprom_ch_count = 0;
	const u8 *eeprom_ch_index = NULL;
4194
	const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
Z
Zhu Yi 已提交
4195
	int band, ch;
4196
	struct iwl_channel_info *ch_info;
Z
Zhu Yi 已提交
4197 4198 4199 4200 4201 4202

	if (priv->channel_count) {
		IWL_DEBUG_INFO("Channel map already initialized.\n");
		return 0;
	}

4203
	if (priv->eeprom39.version < 0x2f) {
4204
		IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4205
			    priv->eeprom39.version);
Z
Zhu Yi 已提交
4206 4207 4208 4209 4210 4211
		return -EINVAL;
	}

	IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");

	priv->channel_count =
C
Christoph Hellwig 已提交
4212 4213 4214 4215 4216
	    ARRAY_SIZE(iwl3945_eeprom_band_1) +
	    ARRAY_SIZE(iwl3945_eeprom_band_2) +
	    ARRAY_SIZE(iwl3945_eeprom_band_3) +
	    ARRAY_SIZE(iwl3945_eeprom_band_4) +
	    ARRAY_SIZE(iwl3945_eeprom_band_5);
Z
Zhu Yi 已提交
4217 4218 4219

	IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);

4220
	priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
Z
Zhu Yi 已提交
4221 4222
				     priv->channel_count, GFP_KERNEL);
	if (!priv->channel_info) {
4223
		IWL_ERR(priv, "Could not allocate channel_info\n");
Z
Zhu Yi 已提交
4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234
		priv->channel_count = 0;
		return -ENOMEM;
	}

	ch_info = priv->channel_info;

	/* Loop through the 5 EEPROM bands adding them in order to the
	 * channel map we maintain (that contains additional information than
	 * what just in the EEPROM) */
	for (band = 1; band <= 5; band++) {

C
Christoph Hellwig 已提交
4235
		iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Z
Zhu Yi 已提交
4236 4237 4238 4239 4240
					&eeprom_ch_info, &eeprom_ch_index);

		/* Loop through each band adding each of the channels */
		for (ch = 0; ch < eeprom_ch_count; ch++) {
			ch_info->channel = eeprom_ch_index[ch];
4241 4242
			ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
			    IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268

			/* permanently store EEPROM's channel regulatory flags
			 *   and max power in channel info database. */
			ch_info->eeprom = eeprom_ch_info[ch];

			/* Copy the run-time flags so they are there even on
			 * invalid channels */
			ch_info->flags = eeprom_ch_info[ch].flags;

			if (!(is_channel_valid(ch_info))) {
				IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
					       "No traffic\n",
					       ch_info->channel,
					       ch_info->flags,
					       is_channel_a_band(ch_info) ?
					       "5.2" : "2.4");
				ch_info++;
				continue;
			}

			/* Initialize regulatory-based run-time data */
			ch_info->max_power_avg = ch_info->curr_txpow =
			    eeprom_ch_info[ch].max_power_avg;
			ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
			ch_info->min_power = 0;

4269
			IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
Z
Zhu Yi 已提交
4270 4271 4272 4273
				       " %ddBm): Ad-Hoc %ssupported\n",
				       ch_info->channel,
				       is_channel_a_band(ch_info) ?
				       "5.2" : "2.4",
4274
				       CHECK_AND_PRINT(VALID),
Z
Zhu Yi 已提交
4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298
				       CHECK_AND_PRINT(IBSS),
				       CHECK_AND_PRINT(ACTIVE),
				       CHECK_AND_PRINT(RADAR),
				       CHECK_AND_PRINT(WIDE),
				       CHECK_AND_PRINT(DFS),
				       eeprom_ch_info[ch].flags,
				       eeprom_ch_info[ch].max_power_avg,
				       ((eeprom_ch_info[ch].
					 flags & EEPROM_CHANNEL_IBSS)
					&& !(eeprom_ch_info[ch].
					     flags & EEPROM_CHANNEL_RADAR))
				       ? "" : "not ");

			/* Set the user_txpower_limit to the highest power
			 * supported by any channel */
			if (eeprom_ch_info[ch].max_power_avg >
			    priv->user_txpower_limit)
				priv->user_txpower_limit =
				    eeprom_ch_info[ch].max_power_avg;

			ch_info++;
		}
	}

4299
	/* Set up txpower settings in driver for all channels */
Z
Zhu Yi 已提交
4300 4301 4302 4303 4304 4305
	if (iwl3945_txpower_set_from_eeprom(priv))
		return -EIO;

	return 0;
}

4306 4307 4308
/*
 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
 */
4309
static void iwl3945_free_channel_map(struct iwl_priv *priv)
4310 4311 4312 4313 4314
{
	kfree(priv->channel_info);
	priv->channel_count = 0;
}

Z
Zhu Yi 已提交
4315 4316 4317
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
 * sending probe req.  This should be set long enough to hear probe responses
 * from more than one AP.  */
4318 4319 4320 4321 4322
#define IWL_ACTIVE_DWELL_TIME_24    (30)	/* all times in msec */
#define IWL_ACTIVE_DWELL_TIME_52    (20)

#define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
#define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
Z
Zhu Yi 已提交
4323 4324 4325 4326 4327 4328 4329 4330

/* For faster active scanning, scan will move to the next channel if fewer than
 * PLCP_QUIET_THRESH packets are heard on this channel within
 * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
 * time if it's a quiet channel (nothing responded to our probe, and there's
 * no other traffic).
 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
#define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)	/* packets */
4331
#define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)	/* msec */
Z
Zhu Yi 已提交
4332 4333 4334 4335 4336 4337 4338 4339 4340

/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
 * Must be set longer than active dwell time.
 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
#define IWL_PASSIVE_DWELL_TIME_24   (20)	/* all times in msec */
#define IWL_PASSIVE_DWELL_TIME_52   (10)
#define IWL_PASSIVE_DWELL_BASE      (100)
#define IWL_CHANNEL_TUNE_TIME       5

K
Kolekar, Abhijeet 已提交
4341
#define IWL_SCAN_PROBE_MASK(n)	 (BIT(n) | (BIT(n) - BIT(1)))
4342

4343
static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4344 4345
						enum ieee80211_band band,
						u8 n_probes)
Z
Zhu Yi 已提交
4346
{
4347
	if (band == IEEE80211_BAND_5GHZ)
4348 4349
		return IWL_ACTIVE_DWELL_TIME_52 +
			IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4350
	else
4351 4352
		return IWL_ACTIVE_DWELL_TIME_24 +
			IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4353 4354
}

4355
static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4356
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
4357
{
4358
	u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Z
Zhu Yi 已提交
4359 4360 4361
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;

C
Christoph Hellwig 已提交
4362
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374
		/* If we're associated, we clamp the maximum passive
		 * dwell time to be 98% of the beacon interval (minus
		 * 2 * channel tune time) */
		passive = priv->beacon_int;
		if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
			passive = IWL_PASSIVE_DWELL_BASE;
		passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
	}

	return passive;
}

4375
static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4376
					 enum ieee80211_band band,
4377
				     u8 is_active, u8 n_probes,
C
Christoph Hellwig 已提交
4378
				     struct iwl3945_scan_channel *scan_ch)
Z
Zhu Yi 已提交
4379 4380
{
	const struct ieee80211_channel *channels = NULL;
4381
	const struct ieee80211_supported_band *sband;
4382
	const struct iwl_channel_info *ch_info;
Z
Zhu Yi 已提交
4383 4384 4385 4386
	u16 passive_dwell = 0;
	u16 active_dwell = 0;
	int added, i;

K
Kolekar, Abhijeet 已提交
4387
	sband = iwl_get_hw_mode(priv, band);
4388
	if (!sband)
Z
Zhu Yi 已提交
4389 4390
		return 0;

4391
	channels = sband->channels;
Z
Zhu Yi 已提交
4392

4393
	active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4394
	passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Z
Zhu Yi 已提交
4395

4396 4397 4398
	if (passive_dwell <= active_dwell)
		passive_dwell = active_dwell + 1;

4399
	for (i = 0, added = 0; i < sband->n_channels; i++) {
4400 4401 4402
		if (channels[i].flags & IEEE80211_CHAN_DISABLED)
			continue;

4403
		scan_ch->channel = channels[i].hw_value;
Z
Zhu Yi 已提交
4404

4405
		ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Z
Zhu Yi 已提交
4406
		if (!is_channel_valid(ch_info)) {
4407
			IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
Z
Zhu Yi 已提交
4408 4409 4410 4411
				       scan_ch->channel);
			continue;
		}

4412 4413 4414 4415 4416
		scan_ch->active_dwell = cpu_to_le16(active_dwell);
		scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
		/* If passive , set up for auto-switch
		 *  and use long active_dwell time.
		 */
Z
Zhu Yi 已提交
4417
		if (!is_active || is_channel_passive(ch_info) ||
4418
		    (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
Z
Zhu Yi 已提交
4419
			scan_ch->type = 0;	/* passive */
4420 4421 4422
			if (IWL_UCODE_API(priv->ucode_ver) == 1)
				scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
		} else {
Z
Zhu Yi 已提交
4423
			scan_ch->type = 1;	/* active */
4424
		}
Z
Zhu Yi 已提交
4425

4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438
		/* Set direct probe bits. These may be used both for active
		 * scan channels (probes gets sent right away),
		 * or for passive channels (probes get se sent only after
		 * hearing clear Rx packet).*/
		if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
			if (n_probes)
				scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
		} else {
			/* uCode v1 does not allow setting direct probe bits on
			 * passive channel. */
			if ((scan_ch->type & 1) && n_probes)
				scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
		}
Z
Zhu Yi 已提交
4439

4440
		/* Set txpower levels to defaults */
Z
Zhu Yi 已提交
4441 4442 4443 4444
		scan_ch->tpc.dsp_atten = 110;
		/* scan_pwr_info->tpc.dsp_atten; */

		/*scan_pwr_info->tpc.tx_gain; */
4445
		if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4446 4447 4448 4449
			scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
		else {
			scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
			/* NOTE: if we were doing 6Mb OFDM for scans we'd use
4450
			 * power level:
4451
			 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Z
Zhu Yi 已提交
4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468
			 */
		}

		IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
			       scan_ch->channel,
			       (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
			       (scan_ch->type & 1) ?
			       active_dwell : passive_dwell);

		scan_ch++;
		added++;
	}

	IWL_DEBUG_SCAN("total channels to scan %d \n", added);
	return added;
}

4469
static void iwl3945_init_hw_rates(struct iwl_priv *priv,
Z
Zhu Yi 已提交
4470 4471 4472 4473 4474
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
4475 4476 4477 4478
		rates[i].bitrate = iwl3945_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;
4479
		if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
Z
Zhu Yi 已提交
4480
			/*
4481
			 * If CCK != 1M then set short preamble rate flag.
Z
Zhu Yi 已提交
4482
			 */
C
Christoph Hellwig 已提交
4483
			rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4484
				0 : IEEE80211_RATE_SHORT_PREAMBLE;
Z
Zhu Yi 已提交
4485 4486 4487 4488 4489
		}
	}
}

/**
C
Christoph Hellwig 已提交
4490
 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Z
Zhu Yi 已提交
4491
 */
4492
static int iwl3945_init_geos(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4493
{
4494
	struct iwl_channel_info *ch;
4495
	struct ieee80211_supported_band *sband;
Z
Zhu Yi 已提交
4496 4497 4498 4499 4500
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

4501 4502
	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Z
Zhu Yi 已提交
4503 4504 4505 4506 4507 4508 4509
		IWL_DEBUG_INFO("Geography modes already initialized.\n");
		set_bit(STATUS_GEO_CONFIGURED, &priv->status);
		return 0;
	}

	channels = kzalloc(sizeof(struct ieee80211_channel) *
			   priv->channel_count, GFP_KERNEL);
4510
	if (!channels)
Z
Zhu Yi 已提交
4511 4512
		return -ENOMEM;

4513
	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Z
Zhu Yi 已提交
4514 4515 4516 4517 4518 4519 4520
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531
	sband = &priv->bands[IEEE80211_BAND_5GHZ];
	sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
	/* just OFDM */
	sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
	sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;

	sband = &priv->bands[IEEE80211_BAND_2GHZ];
	sband->channels = channels;
	/* OFDM & CCK */
	sband->bitrates = rates;
	sband->n_bitrates = IWL_RATE_COUNT;
Z
Zhu Yi 已提交
4532 4533 4534 4535

	priv->ieee_channels = channels;
	priv->ieee_rates = rates;

C
Christoph Hellwig 已提交
4536
	iwl3945_init_hw_rates(priv, rates);
Z
Zhu Yi 已提交
4537

4538
	for (i = 0;  i < priv->channel_count; i++) {
Z
Zhu Yi 已提交
4539 4540
		ch = &priv->channel_info[i];

4541 4542
		/* FIXME: might be removed if scan is OK*/
		if (!is_channel_valid(ch))
Z
Zhu Yi 已提交
4543 4544 4545
			continue;

		if (is_channel_a_band(ch))
4546
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4547
		else
4548
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];
Z
Zhu Yi 已提交
4549

4550 4551 4552
		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4553 4554
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
4555
		geo_ch->hw_value = ch->channel;
Z
Zhu Yi 已提交
4556 4557

		if (is_channel_valid(ch)) {
4558 4559
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Z
Zhu Yi 已提交
4560

4561 4562
			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Z
Zhu Yi 已提交
4563 4564

			if (ch->flags & EEPROM_CHANNEL_RADAR)
4565
				geo_ch->flags |= IEEE80211_CHAN_RADAR;
Z
Zhu Yi 已提交
4566 4567 4568 4569

			if (ch->max_power_avg > priv->max_channel_txpower_limit)
				priv->max_channel_txpower_limit =
				    ch->max_power_avg;
4570
		} else {
4571
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582
		}

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

		IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
				ch->channel, geo_ch->center_freq,
				is_channel_a_band(ch) ?  "5.2" : "2.4",
				geo_ch->flags & IEEE80211_CHAN_DISABLED ?
				"restricted" : "valid",
				 geo_ch->flags);
Z
Zhu Yi 已提交
4583 4584
	}

T
Tomas Winkler 已提交
4585 4586
	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
T
Tomas Winkler 已提交
4587 4588 4589
		IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
			"Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
			priv->pci_dev->device, priv->pci_dev->subsystem_device);
T
Tomas Winkler 已提交
4590
		 priv->cfg->sku &= ~IWL_SKU_A;
Z
Zhu Yi 已提交
4591 4592
	}

T
Tomas Winkler 已提交
4593
	IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4594 4595
	       priv->bands[IEEE80211_BAND_2GHZ].n_channels,
	       priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Z
Zhu Yi 已提交
4596

4597 4598 4599 4600 4601 4602
	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];
Z
Zhu Yi 已提交
4603 4604 4605 4606 4607 4608

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}

4609 4610 4611
/*
 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
 */
4612
static void iwl3945_free_geos(struct iwl_priv *priv)
4613 4614 4615 4616 4617 4618
{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}

Z
Zhu Yi 已提交
4619 4620 4621 4622 4623 4624
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

4625
static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4626
{
4627 4628 4629 4630 4631 4632
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
	iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
4633 4634 4635
}

/**
C
Christoph Hellwig 已提交
4636
 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
4637 4638
 *     looking at all data.
 */
4639
static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
4640 4641 4642 4643 4644 4645 4646 4647
{
	u32 val;
	u32 save_len = len;
	int rc = 0;
	u32 errcnt;

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

4648
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
4649 4650 4651
	if (rc)
		return rc;

4652
	iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4653
			       IWL39_RTC_INST_LOWER_BOUND);
Z
Zhu Yi 已提交
4654 4655 4656 4657 4658 4659

	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 */
4660
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
4661
		if (val != le32_to_cpu(*image)) {
4662
			IWL_ERR(priv, "uCode INST section is invalid at "
Z
Zhu Yi 已提交
4663 4664 4665 4666 4667 4668 4669 4670 4671
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  save_len - len, val, le32_to_cpu(*image));
			rc = -EIO;
			errcnt++;
			if (errcnt >= 20)
				break;
		}
	}

4672
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
4673 4674

	if (!errcnt)
4675
		IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Z
Zhu Yi 已提交
4676 4677 4678 4679 4680 4681

	return rc;
}


/**
C
Christoph Hellwig 已提交
4682
 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
4683 4684 4685
 *   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.
 */
4686
static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
4687 4688 4689 4690 4691 4692 4693 4694
{
	u32 val;
	int rc = 0;
	u32 errcnt = 0;
	u32 i;

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

4695
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
4696 4697 4698 4699 4700 4701 4702
	if (rc)
		return rc;

	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 */
4703
		iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4704
			i + IWL39_RTC_INST_LOWER_BOUND);
4705
		val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
4706 4707
		if (val != le32_to_cpu(*image)) {
#if 0 /* Enable this if you want to see details */
4708
			IWL_ERR(priv, "uCode INST section is invalid at "
Z
Zhu Yi 已提交
4709 4710 4711 4712 4713 4714 4715 4716 4717 4718
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  i, val, *image);
#endif
			rc = -EIO;
			errcnt++;
			if (errcnt >= 3)
				break;
		}
	}

4719
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
4720 4721 4722 4723 4724 4725

	return rc;
}


/**
C
Christoph Hellwig 已提交
4726
 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Z
Zhu Yi 已提交
4727 4728
 *    and verify its contents
 */
4729
static int iwl3945_verify_ucode(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4730 4731 4732 4733 4734 4735 4736 4737
{
	__le32 *image;
	u32 len;
	int rc = 0;

	/* Try bootstrap */
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
4738
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
4739 4740 4741 4742 4743 4744 4745 4746
	if (rc == 0) {
		IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
		return 0;
	}

	/* Try initialize */
	image = (__le32 *)priv->ucode_init.v_addr;
	len = priv->ucode_init.len;
C
Christoph Hellwig 已提交
4747
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
4748 4749 4750 4751 4752 4753 4754 4755
	if (rc == 0) {
		IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
		return 0;
	}

	/* Try runtime/protocol */
	image = (__le32 *)priv->ucode_code.v_addr;
	len = priv->ucode_code.len;
C
Christoph Hellwig 已提交
4756
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
4757 4758 4759 4760 4761
	if (rc == 0) {
		IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
		return 0;
	}

4762
	IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
Z
Zhu Yi 已提交
4763

4764 4765 4766
	/* 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. */
Z
Zhu Yi 已提交
4767 4768
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
4769
	rc = iwl3945_verify_inst_full(priv, image, len);
Z
Zhu Yi 已提交
4770 4771 4772 4773

	return rc;
}

4774
static void iwl3945_nic_start(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4775 4776
{
	/* Remove all resets to allow NIC to operate */
4777
	iwl_write32(priv, CSR_RESET, 0);
Z
Zhu Yi 已提交
4778 4779 4780
}

/**
C
Christoph Hellwig 已提交
4781
 * iwl3945_read_ucode - Read uCode images from disk file.
Z
Zhu Yi 已提交
4782 4783 4784
 *
 * Copy into buffers for card to fetch via bus-mastering
 */
4785
static int iwl3945_read_ucode(struct iwl_priv *priv)
Z
Zhu Yi 已提交
4786
{
4787
	struct iwl_ucode *ucode;
4788
	int ret = -EINVAL, index;
Z
Zhu Yi 已提交
4789 4790
	const struct firmware *ucode_raw;
	/* firmware file name contains uCode/driver compatibility version */
4791 4792 4793 4794
	const char *name_pre = priv->cfg->fw_name_pre;
	const unsigned int api_max = priv->cfg->ucode_api_max;
	const unsigned int api_min = priv->cfg->ucode_api_min;
	char buf[25];
Z
Zhu Yi 已提交
4795 4796
	u8 *src;
	size_t len;
4797
	u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
Z
Zhu Yi 已提交
4798 4799 4800

	/* Ask kernel firmware_class module to get the boot firmware off disk.
	 * request_firmware() is synchronous, file is in memory on return. */
4801 4802 4803 4804
	for (index = api_max; index >= api_min; index--) {
		sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
		ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
		if (ret < 0) {
4805
			IWL_ERR(priv, "%s firmware file req failed: %d\n",
4806 4807 4808 4809 4810 4811 4812
				  buf, ret);
			if (ret == -ENOENT)
				continue;
			else
				goto error;
		} else {
			if (index < api_max)
4813 4814 4815
				IWL_ERR(priv, "Loaded firmware %s, "
					"which is deprecated. "
					" Please use API v%u instead.\n",
4816 4817 4818 4819 4820
					  buf, api_max);
			IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
				       buf, ucode_raw->size);
			break;
		}
Z
Zhu Yi 已提交
4821 4822
	}

4823 4824
	if (ret < 0)
		goto error;
Z
Zhu Yi 已提交
4825 4826 4827

	/* Make sure that we got at least our header! */
	if (ucode_raw->size < sizeof(*ucode)) {
4828
		IWL_ERR(priv, "File size way too small!\n");
4829
		ret = -EINVAL;
Z
Zhu Yi 已提交
4830 4831 4832 4833 4834 4835
		goto err_release;
	}

	/* Data from ucode file:  header followed by uCode images */
	ucode = (void *)ucode_raw->data;

4836
	priv->ucode_ver = le32_to_cpu(ucode->ver);
4837
	api_ver = IWL_UCODE_API(priv->ucode_ver);
Z
Zhu Yi 已提交
4838 4839 4840 4841 4842 4843
	inst_size = le32_to_cpu(ucode->inst_size);
	data_size = le32_to_cpu(ucode->data_size);
	init_size = le32_to_cpu(ucode->init_size);
	init_data_size = le32_to_cpu(ucode->init_data_size);
	boot_size = le32_to_cpu(ucode->boot_size);

4844 4845 4846 4847 4848
	/* api_ver should match the api version forming part of the
	 * firmware filename ... but we don't check for that and only rely
	 * on the API version read from firware header from here on forward */

	if (api_ver < api_min || api_ver > api_max) {
4849
		IWL_ERR(priv, "Driver unable to support your firmware API. "
4850 4851 4852 4853 4854 4855 4856
			  "Driver supports v%u, firmware is v%u.\n",
			  api_max, api_ver);
		priv->ucode_ver = 0;
		ret = -EINVAL;
		goto err_release;
	}
	if (api_ver != api_max)
4857
		IWL_ERR(priv, "Firmware has old API version. Expected %u, "
4858 4859 4860 4861
			  "got %u. New firmware can be obtained "
			  "from http://www.intellinuxwireless.org.\n",
			  api_max, api_ver);

T
Tomas Winkler 已提交
4862 4863 4864 4865 4866 4867
	IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
		IWL_UCODE_MAJOR(priv->ucode_ver),
		IWL_UCODE_MINOR(priv->ucode_ver),
		IWL_UCODE_API(priv->ucode_ver),
		IWL_UCODE_SERIAL(priv->ucode_ver));

4868 4869
	IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
		       priv->ucode_ver);
4870 4871 4872 4873 4874
	IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
	IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
	IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
	IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
	IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
Z
Zhu Yi 已提交
4875

4876

Z
Zhu Yi 已提交
4877 4878 4879 4880 4881 4882 4883
	/* Verify size of file vs. image size info in file's header */
	if (ucode_raw->size < sizeof(*ucode) +
		inst_size + data_size + init_size +
		init_data_size + boot_size) {

		IWL_DEBUG_INFO("uCode file size %d too small\n",
			       (int)ucode_raw->size);
4884
		ret = -EINVAL;
Z
Zhu Yi 已提交
4885 4886 4887 4888
		goto err_release;
	}

	/* Verify that uCode images will fit in card's SRAM */
4889
	if (inst_size > IWL39_MAX_INST_SIZE) {
4890 4891 4892
		IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
			       inst_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
4893 4894 4895
		goto err_release;
	}

4896
	if (data_size > IWL39_MAX_DATA_SIZE) {
4897 4898 4899
		IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
			       data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
4900 4901
		goto err_release;
	}
4902
	if (init_size > IWL39_MAX_INST_SIZE) {
4903 4904 4905
		IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
				init_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
4906 4907
		goto err_release;
	}
4908
	if (init_data_size > IWL39_MAX_DATA_SIZE) {
4909 4910 4911
		IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
				init_data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
4912 4913
		goto err_release;
	}
4914
	if (boot_size > IWL39_MAX_BSM_SIZE) {
4915 4916 4917
		IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
				boot_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
4918 4919 4920 4921 4922 4923 4924 4925 4926
		goto err_release;
	}

	/* Allocate ucode buffers for card's bus-master loading ... */

	/* Runtime instructions and 2 copies of data:
	 * 1) unmodified from disk
	 * 2) backup cache for save/restore during power-downs */
	priv->ucode_code.len = inst_size;
4927
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
4928 4929

	priv->ucode_data.len = data_size;
4930
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
4931 4932

	priv->ucode_data_backup.len = data_size;
4933
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
4934

4935 4936 4937
	if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
	    !priv->ucode_data_backup.v_addr)
		goto err_pci_alloc;
Z
Zhu Yi 已提交
4938 4939

	/* Initialization instructions and data */
4940 4941
	if (init_size && init_data_size) {
		priv->ucode_init.len = init_size;
4942
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4943 4944

		priv->ucode_init_data.len = init_data_size;
4945
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4946 4947 4948 4949

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
4950 4951

	/* Bootstrap (instructions only, no data) */
4952 4953
	if (boot_size) {
		priv->ucode_boot.len = boot_size;
4954
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
4955

4956 4957 4958
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
4959 4960 4961 4962 4963 4964

	/* Copy images into buffers for card's bus-master reads ... */

	/* Runtime instructions (first block of data in file) */
	src = &ucode->data[0];
	len = priv->ucode_code.len;
4965
	IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Z
Zhu Yi 已提交
4966 4967 4968 4969 4970
	memcpy(priv->ucode_code.v_addr, src, len);
	IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
		priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);

	/* Runtime data (2nd block)
C
Christoph Hellwig 已提交
4971
	 * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
Z
Zhu Yi 已提交
4972 4973
	src = &ucode->data[inst_size];
	len = priv->ucode_data.len;
4974
	IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Z
Zhu Yi 已提交
4975 4976 4977 4978 4979 4980 4981
	memcpy(priv->ucode_data.v_addr, src, len);
	memcpy(priv->ucode_data_backup.v_addr, src, len);

	/* Initialization instructions (3rd block) */
	if (init_size) {
		src = &ucode->data[inst_size + data_size];
		len = priv->ucode_init.len;
4982 4983
		IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
			       len);
Z
Zhu Yi 已提交
4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007
		memcpy(priv->ucode_init.v_addr, src, len);
	}

	/* Initialization data (4th block) */
	if (init_data_size) {
		src = &ucode->data[inst_size + data_size + init_size];
		len = priv->ucode_init_data.len;
		IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
			       (int)len);
		memcpy(priv->ucode_init_data.v_addr, src, len);
	}

	/* Bootstrap instructions (5th block) */
	src = &ucode->data[inst_size + data_size + init_size + init_data_size];
	len = priv->ucode_boot.len;
	IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
		       (int)len);
	memcpy(priv->ucode_boot.v_addr, src, len);

	/* We have our copies now, allow OS release its copies */
	release_firmware(ucode_raw);
	return 0;

 err_pci_alloc:
5008
	IWL_ERR(priv, "failed to allocate pci memory\n");
5009
	ret = -ENOMEM;
C
Christoph Hellwig 已提交
5010
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
5011 5012 5013 5014 5015

 err_release:
	release_firmware(ucode_raw);

 error:
5016
	return ret;
Z
Zhu Yi 已提交
5017 5018 5019 5020
}


/**
C
Christoph Hellwig 已提交
5021
 * iwl3945_set_ucode_ptrs - Set uCode address location
Z
Zhu Yi 已提交
5022 5023 5024 5025 5026 5027 5028
 *
 * Tell initialization uCode where to find runtime uCode.
 *
 * BSM registers initially contain pointers to initialization uCode.
 * We need to replace them to load runtime uCode inst and data,
 * and to save runtime data when powering down.
 */
5029
static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040
{
	dma_addr_t pinst;
	dma_addr_t pdata;
	int rc = 0;
	unsigned long flags;

	/* bits 31:0 for 3945 */
	pinst = priv->ucode_code.p_addr;
	pdata = priv->ucode_data_backup.p_addr;

	spin_lock_irqsave(&priv->lock, flags);
5041
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
5042 5043 5044 5045 5046 5047
	if (rc) {
		spin_unlock_irqrestore(&priv->lock, flags);
		return rc;
	}

	/* Tell bootstrap uCode where to find image to load */
5048 5049 5050
	iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
	iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
	iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5051 5052
				 priv->ucode_data.len);

T
Tomas Winkler 已提交
5053
	/* Inst byte count must be last to set up, bit 31 signals uCode
Z
Zhu Yi 已提交
5054
	 *   that all new ptr/size info is in place */
5055
	iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5056 5057
				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);

5058
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
5059 5060 5061 5062 5063 5064 5065 5066 5067

	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");

	return rc;
}

/**
C
Christoph Hellwig 已提交
5068
 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5069 5070 5071 5072
 *
 * Called after REPLY_ALIVE notification received from "initialize" uCode.
 *
 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5073
 */
5074
static void iwl3945_init_alive_start(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086
{
	/* Check alive response for "valid" sign from uCode */
	if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
		/* We had an error bringing up the hardware, so take it
		 * all the way back down so we can try again */
		IWL_DEBUG_INFO("Initialize Alive failed.\n");
		goto restart;
	}

	/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
	 * This is a paranoid check, because we would not have gotten the
	 * "initialize" alive if code weren't properly loaded.  */
C
Christoph Hellwig 已提交
5087
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5088 5089 5090 5091 5092 5093 5094 5095 5096 5097
		/* Runtime instruction load was bad;
		 * take it all the way back down so we can try again */
		IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
		goto restart;
	}

	/* Send pointers to protocol/runtime uCode image ... init code will
	 * load and launch runtime uCode, which will send us another "Alive"
	 * notification. */
	IWL_DEBUG_INFO("Initialization Alive received.\n");
C
Christoph Hellwig 已提交
5098
	if (iwl3945_set_ucode_ptrs(priv)) {
Z
Zhu Yi 已提交
5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110
		/* Runtime instruction load won't happen;
		 * take it all the way back down so we can try again */
		IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
		goto restart;
	}
	return;

 restart:
	queue_work(priv->workqueue, &priv->restart);
}


5111 5112 5113 5114
/* temporary */
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
				     struct sk_buff *skb);

Z
Zhu Yi 已提交
5115
/**
C
Christoph Hellwig 已提交
5116
 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5117
 *                   from protocol/runtime uCode (initialization uCode's
C
Christoph Hellwig 已提交
5118
 *                   Alive gets handled by iwl3945_init_alive_start()).
Z
Zhu Yi 已提交
5119
 */
5120
static void iwl3945_alive_start(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137
{
	int rc = 0;
	int thermal_spin = 0;
	u32 rfkill;

	IWL_DEBUG_INFO("Runtime Alive received.\n");

	if (priv->card_alive.is_valid != UCODE_VALID_OK) {
		/* We had an error bringing up the hardware, so take it
		 * all the way back down so we can try again */
		IWL_DEBUG_INFO("Alive failed.\n");
		goto restart;
	}

	/* Initialize uCode has loaded Runtime uCode ... verify inst image.
	 * This is a paranoid check, because we would not have gotten the
	 * "runtime" alive if code weren't properly loaded.  */
C
Christoph Hellwig 已提交
5138
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5139 5140 5141 5142 5143 5144
		/* Runtime instruction load was bad;
		 * take it all the way back down so we can try again */
		IWL_DEBUG_INFO("Bad runtime uCode load.\n");
		goto restart;
	}

C
Christoph Hellwig 已提交
5145
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5146

5147
	rc = iwl_grab_nic_access(priv);
Z
Zhu Yi 已提交
5148
	if (rc) {
5149
		IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
Z
Zhu Yi 已提交
5150 5151 5152
		return;
	}

5153
	rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
Z
Zhu Yi 已提交
5154
	IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5155
	iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
5156 5157 5158

	if (rfkill & 0x1) {
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
T
Tomas Winkler 已提交
5159
		/* if RFKILL is not on, then wait for thermal
Z
Zhu Yi 已提交
5160
		 * sensor in adapter to kick in */
C
Christoph Hellwig 已提交
5161
		while (iwl3945_hw_get_temperature(priv) == 0) {
Z
Zhu Yi 已提交
5162 5163 5164 5165 5166 5167 5168 5169 5170 5171
			thermal_spin++;
			udelay(10);
		}

		if (thermal_spin)
			IWL_DEBUG_INFO("Thermal calibration took %dus\n",
				       thermal_spin * 10);
	} else
		set_bit(STATUS_RF_KILL_HW, &priv->status);

5172
	/* After the ALIVE response, we can send commands to 3945 uCode */
Z
Zhu Yi 已提交
5173 5174 5175 5176 5177
	set_bit(STATUS_ALIVE, &priv->status);

	/* Clear out the uCode error bit if it is set */
	clear_bit(STATUS_FW_ERROR, &priv->status);

5178
	if (iwl_is_rfkill(priv))
Z
Zhu Yi 已提交
5179 5180
		return;

5181
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
5182 5183 5184 5185

	priv->active_rate = priv->rates_mask;
	priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;

C
Christoph Hellwig 已提交
5186
	iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Z
Zhu Yi 已提交
5187

C
Christoph Hellwig 已提交
5188 5189
	if (iwl3945_is_associated(priv)) {
		struct iwl3945_rxon_cmd *active_rxon =
5190
				(struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
Z
Zhu Yi 已提交
5191

5192 5193
		memcpy(&priv->staging39_rxon, &priv->active39_rxon,
		       sizeof(priv->staging39_rxon));
Z
Zhu Yi 已提交
5194 5195 5196
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	} else {
		/* Initialize our rx_config data */
5197
		iwl3945_connection_init_rx_config(priv, priv->iw_mode);
5198
		memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
Z
Zhu Yi 已提交
5199 5200
	}

5201
	/* Configure Bluetooth device coexistence support */
C
Christoph Hellwig 已提交
5202
	iwl3945_send_bt_config(priv);
Z
Zhu Yi 已提交
5203 5204

	/* Configure the adapter for unassociated operation */
C
Christoph Hellwig 已提交
5205
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5206 5207 5208

	iwl3945_reg_txpower_periodic(priv);

5209 5210
	iwl3945_led_register(priv);

Z
Zhu Yi 已提交
5211
	IWL_DEBUG_INFO("ALIVE processing complete.\n");
5212
	set_bit(STATUS_READY, &priv->status);
5213
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
5214 5215

	if (priv->error_recovering)
C
Christoph Hellwig 已提交
5216
		iwl3945_error_recovery(priv);
Z
Zhu Yi 已提交
5217

5218 5219 5220 5221 5222 5223 5224 5225
	/* reassociate for ADHOC mode */
	if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
		struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
								priv->vif);
		if (beacon)
			iwl3945_mac_beacon_update(priv->hw, beacon);
	}

Z
Zhu Yi 已提交
5226 5227 5228 5229 5230 5231
	return;

 restart:
	queue_work(priv->workqueue, &priv->restart);
}

5232
static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
Z
Zhu Yi 已提交
5233

5234
static void __iwl3945_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246
{
	unsigned long flags;
	int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
	struct ieee80211_conf *conf = NULL;

	IWL_DEBUG_INFO(DRV_NAME " is going down\n");

	conf = ieee80211_get_hw_conf(priv->hw);

	if (!exit_pending)
		set_bit(STATUS_EXIT_PENDING, &priv->status);

M
Mohamed Abbas 已提交
5247
	iwl3945_led_unregister(priv);
C
Christoph Hellwig 已提交
5248
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5249 5250 5251 5252 5253 5254 5255 5256 5257 5258

	/* Unblock any waiting calls */
	wake_up_interruptible_all(&priv->wait_command_queue);

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

	/* stop and reset the on-board processor */
5259
	iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
5260 5261

	/* tell the device to stop sending interrupts */
5262
	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5263
	iwl3945_disable_interrupts(priv);
5264 5265
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
5266 5267 5268 5269

	if (priv->mac80211_registered)
		ieee80211_stop_queues(priv->hw);

C
Christoph Hellwig 已提交
5270
	/* If we have not previously called iwl3945_init() then
Z
Zhu Yi 已提交
5271
	 * clear all bits but the RF Kill and SUSPEND bits and return */
5272
	if (!iwl_is_init(priv)) {
Z
Zhu Yi 已提交
5273 5274 5275 5276
		priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
					STATUS_RF_KILL_HW |
			       test_bit(STATUS_RF_KILL_SW, &priv->status) <<
					STATUS_RF_KILL_SW |
5277 5278
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5279
			       test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5280 5281 5282
					STATUS_IN_SUSPEND |
				test_bit(STATUS_EXIT_PENDING, &priv->status) <<
					STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5283 5284 5285 5286 5287 5288 5289 5290 5291
		goto exit;
	}

	/* ...otherwise clear out all the status bits but the RF Kill and
	 * SUSPEND bits and continue taking the NIC down. */
	priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
				STATUS_RF_KILL_HW |
			test_bit(STATUS_RF_KILL_SW, &priv->status) <<
				STATUS_RF_KILL_SW |
5292 5293
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5294 5295 5296
			test_bit(STATUS_IN_SUSPEND, &priv->status) <<
				STATUS_IN_SUSPEND |
			test_bit(STATUS_FW_ERROR, &priv->status) <<
5297 5298 5299
				STATUS_FW_ERROR |
			test_bit(STATUS_EXIT_PENDING, &priv->status) <<
				STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5300 5301

	spin_lock_irqsave(&priv->lock, flags);
5302
	iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Z
Zhu Yi 已提交
5303 5304
	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
5305 5306
	iwl3945_hw_txq_ctx_stop(priv);
	iwl3945_hw_rxq_stop(priv);
Z
Zhu Yi 已提交
5307 5308

	spin_lock_irqsave(&priv->lock, flags);
5309 5310
	if (!iwl_grab_nic_access(priv)) {
		iwl_write_prph(priv, APMG_CLK_DIS_REG,
Z
Zhu Yi 已提交
5311
					 APMG_CLK_VAL_DMA_CLK_RQT);
5312
		iwl_release_nic_access(priv);
Z
Zhu Yi 已提交
5313 5314 5315 5316 5317
	}
	spin_unlock_irqrestore(&priv->lock, flags);

	udelay(5);

K
Kolekar, Abhijeet 已提交
5318
	priv->cfg->ops->lib->apm_ops.reset(priv);
Z
Zhu Yi 已提交
5319
 exit:
5320
	memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
5321 5322 5323 5324 5325 5326

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

	/* clear out any free frames */
C
Christoph Hellwig 已提交
5327
	iwl3945_clear_free_frames(priv);
Z
Zhu Yi 已提交
5328 5329
}

5330
static void iwl3945_down(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5331 5332
{
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5333
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
5334
	mutex_unlock(&priv->mutex);
5335

C
Christoph Hellwig 已提交
5336
	iwl3945_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
5337 5338 5339 5340
}

#define MAX_HW_RESTARTS 5

5341
static int __iwl3945_up(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5342 5343 5344 5345
{
	int rc, i;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5346
		IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
Z
Zhu Yi 已提交
5347 5348 5349 5350
		return -EIO;
	}

	if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5351
		IWL_WARN(priv, "Radio disabled by SW RF kill (module "
Z
Zhu Yi 已提交
5352
			    "parameter)\n");
5353 5354 5355
		return -ENODEV;
	}

5356
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5357
		IWL_ERR(priv, "ucode not available for device bring up\n");
5358 5359 5360
		return -EIO;
	}

5361
	/* If platform's RF_KILL switch is NOT set to KILL */
5362
	if (iwl_read32(priv, CSR_GP_CNTRL) &
5363 5364 5365 5366 5367
				CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
	else {
		set_bit(STATUS_RF_KILL_HW, &priv->status);
		if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5368
			IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
5369 5370
			return -ENODEV;
		}
Z
Zhu Yi 已提交
5371
	}
5372

5373
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
5374

C
Christoph Hellwig 已提交
5375
	rc = iwl3945_hw_nic_init(priv);
Z
Zhu Yi 已提交
5376
	if (rc) {
5377
		IWL_ERR(priv, "Unable to int nic\n");
Z
Zhu Yi 已提交
5378 5379 5380 5381
		return rc;
	}

	/* make sure rfkill handshake bits are cleared */
5382 5383
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Z
Zhu Yi 已提交
5384 5385 5386
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
5387
	iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
C
Christoph Hellwig 已提交
5388
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
5389 5390

	/* really make sure rfkill handshake bits are cleared */
5391 5392
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
5393 5394 5395 5396 5397

	/* Copy original ucode data image from disk into backup cache.
	 * This will be used to initialize the on-board processor's
	 * data SRAM for a clean start when the runtime program first loads. */
	memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5398
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
5399

5400 5401 5402 5403
	/* We return success when we resume from suspend and rf_kill is on. */
	if (test_bit(STATUS_RF_KILL_HW, &priv->status))
		return 0;

Z
Zhu Yi 已提交
5404 5405
	for (i = 0; i < MAX_HW_RESTARTS; i++) {

C
Christoph Hellwig 已提交
5406
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5407 5408 5409 5410

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
K
Kolekar, Abhijeet 已提交
5411
		priv->cfg->ops->lib->load_ucode(priv);
Z
Zhu Yi 已提交
5412 5413

		if (rc) {
5414 5415
			IWL_ERR(priv,
				"Unable to set up bootstrap uCode: %d\n", rc);
Z
Zhu Yi 已提交
5416 5417 5418 5419
			continue;
		}

		/* start card; "initialize" will load runtime ucode */
C
Christoph Hellwig 已提交
5420
		iwl3945_nic_start(priv);
Z
Zhu Yi 已提交
5421 5422 5423 5424 5425 5426 5427

		IWL_DEBUG_INFO(DRV_NAME " is coming up\n");

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
C
Christoph Hellwig 已提交
5428
	__iwl3945_down(priv);
5429
	clear_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
5430 5431 5432

	/* tried to restart and config the device for as long as our
	 * patience could withstand */
5433
	IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
Z
Zhu Yi 已提交
5434 5435 5436 5437 5438 5439 5440 5441 5442 5443
	return -EIO;
}


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

C
Christoph Hellwig 已提交
5444
static void iwl3945_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5445
{
5446 5447
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, init_alive_start.work);
Z
Zhu Yi 已提交
5448 5449 5450 5451 5452

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5453
	iwl3945_init_alive_start(priv);
Z
Zhu Yi 已提交
5454 5455 5456
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5457
static void iwl3945_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5458
{
5459 5460
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, alive_start.work);
Z
Zhu Yi 已提交
5461 5462 5463 5464 5465

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5466
	iwl3945_alive_start(priv);
Z
Zhu Yi 已提交
5467 5468 5469
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5470
static void iwl3945_bg_rf_kill(struct work_struct *work)
Z
Zhu Yi 已提交
5471
{
5472
	struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
Z
Zhu Yi 已提交
5473 5474 5475 5476 5477 5478 5479 5480

	wake_up_interruptible(&priv->wait_command_queue);

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

	mutex_lock(&priv->mutex);

5481
	if (!iwl_is_rfkill(priv)) {
Z
Zhu Yi 已提交
5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492
		IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
			  "HW and/or SW RF Kill no longer active, restarting "
			  "device\n");
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
			queue_work(priv->workqueue, &priv->restart);
	} else {

		if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
			IWL_DEBUG_RF_KILL("Can not turn radio back on - "
					  "disabled by SW switch\n");
		else
5493
			IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
Z
Zhu Yi 已提交
5494 5495 5496
				    "Kill switch must be turned off for "
				    "wireless networking to work.\n");
	}
5497

Z
Zhu Yi 已提交
5498
	mutex_unlock(&priv->mutex);
5499
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
5500 5501 5502 5503
}

#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)

C
Christoph Hellwig 已提交
5504
static void iwl3945_bg_scan_check(struct work_struct *data)
Z
Zhu Yi 已提交
5505
{
5506 5507
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, scan_check.work);
Z
Zhu Yi 已提交
5508 5509 5510 5511 5512 5513 5514 5515 5516 5517

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

	mutex_lock(&priv->mutex);
	if (test_bit(STATUS_SCANNING, &priv->status) ||
	    test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
		IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
			  "Scan completion watchdog resetting adapter (%dms)\n",
			  jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5518

Z
Zhu Yi 已提交
5519
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
C
Christoph Hellwig 已提交
5520
			iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
5521 5522 5523 5524
	}
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5525
static void iwl3945_bg_request_scan(struct work_struct *data)
Z
Zhu Yi 已提交
5526
{
5527 5528
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, request_scan);
5529
	struct iwl_host_cmd cmd = {
Z
Zhu Yi 已提交
5530
		.id = REPLY_SCAN_CMD,
C
Christoph Hellwig 已提交
5531
		.len = sizeof(struct iwl3945_scan_cmd),
Z
Zhu Yi 已提交
5532 5533 5534
		.meta.flags = CMD_SIZE_HUGE,
	};
	int rc = 0;
C
Christoph Hellwig 已提交
5535
	struct iwl3945_scan_cmd *scan;
Z
Zhu Yi 已提交
5536
	struct ieee80211_conf *conf = NULL;
5537
	u8 n_probes = 2;
5538
	enum ieee80211_band band;
5539
	DECLARE_SSID_BUF(ssid);
Z
Zhu Yi 已提交
5540 5541 5542 5543 5544

	conf = ieee80211_get_hw_conf(priv->hw);

	mutex_lock(&priv->mutex);

5545
	if (!iwl_is_ready(priv)) {
5546
		IWL_WARN(priv, "request scan called when driver not ready.\n");
Z
Zhu Yi 已提交
5547 5548 5549
		goto done;
	}

T
Tomas Winkler 已提交
5550
	/* Make sure the scan wasn't canceled before this queued work
Z
Zhu Yi 已提交
5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573
	 * was given the chance to run... */
	if (!test_bit(STATUS_SCANNING, &priv->status))
		goto done;

	/* This should never be called or scheduled if there is currently
	 * a scan active in the hardware. */
	if (test_bit(STATUS_SCAN_HW, &priv->status)) {
		IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
			       "Ignoring second request.\n");
		rc = -EIO;
		goto done;
	}

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
		IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
		goto done;
	}

	if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
		IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
		goto done;
	}

5574
	if (iwl_is_rfkill(priv)) {
Z
Zhu Yi 已提交
5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588
		IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
		goto done;
	}

	if (!test_bit(STATUS_READY, &priv->status)) {
		IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
		goto done;
	}

	if (!priv->scan_bands) {
		IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
		goto done;
	}

5589 5590
	if (!priv->scan39) {
		priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Z
Zhu Yi 已提交
5591
				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5592
		if (!priv->scan39) {
Z
Zhu Yi 已提交
5593 5594 5595 5596
			rc = -ENOMEM;
			goto done;
		}
	}
5597
	scan = priv->scan39;
C
Christoph Hellwig 已提交
5598
	memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Z
Zhu Yi 已提交
5599 5600 5601 5602

	scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
	scan->quiet_time = IWL_ACTIVE_QUIET_TIME;

C
Christoph Hellwig 已提交
5603
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616
		u16 interval = 0;
		u32 extra;
		u32 suspend_time = 100;
		u32 scan_suspend_time = 100;
		unsigned long flags;

		IWL_DEBUG_INFO("Scanning while associated...\n");

		spin_lock_irqsave(&priv->lock, flags);
		interval = priv->beacon_int;
		spin_unlock_irqrestore(&priv->lock, flags);

		scan->suspend_time = 0;
5617
		scan->max_out_time = cpu_to_le32(200 * 1024);
Z
Zhu Yi 已提交
5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639
		if (!interval)
			interval = suspend_time;
		/*
		 * suspend time format:
		 *  0-19: beacon interval in usec (time before exec.)
		 * 20-23: 0
		 * 24-31: number of beacons (suspend between channels)
		 */

		extra = (suspend_time / interval) << 24;
		scan_suspend_time = 0xFF0FFFFF &
		    (extra | ((suspend_time % interval) * 1024));

		scan->suspend_time = cpu_to_le32(scan_suspend_time);
		IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
			       scan_suspend_time, interval);
	}

	/* We should add the ability for user to lock to PASSIVE ONLY */
	if (priv->one_direct_scan) {
		IWL_DEBUG_SCAN
		    ("Kicking off one direct scan for '%s'\n",
5640 5641
		     print_ssid(ssid, priv->direct_ssid,
				priv->direct_ssid_len));
Z
Zhu Yi 已提交
5642 5643 5644 5645
		scan->direct_scan[0].id = WLAN_EID_SSID;
		scan->direct_scan[0].len = priv->direct_ssid_len;
		memcpy(scan->direct_scan[0].ssid,
		       priv->direct_ssid, priv->direct_ssid_len);
5646 5647
		n_probes++;
	} else
5648
		IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
Z
Zhu Yi 已提交
5649 5650 5651 5652

	/* We don't build a direct scan probe request; the uCode will do
	 * that based on the direct_mask added to each channel entry */
	scan->tx_cmd.len = cpu_to_le16(
C
Christoph Hellwig 已提交
5653
		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
J
Johannes Berg 已提交
5654
			IWL_MAX_SCAN_SIZE - sizeof(*scan)));
Z
Zhu Yi 已提交
5655
	scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5656
	scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
Z
Zhu Yi 已提交
5657 5658 5659 5660
	scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;

	/* flags + rate selection */

5661
	if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
Z
Zhu Yi 已提交
5662 5663 5664
		scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
		scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
		scan->good_CRC_th = 0;
5665
		band = IEEE80211_BAND_2GHZ;
5666
	} else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
Z
Zhu Yi 已提交
5667 5668
		scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
		scan->good_CRC_th = IWL_GOOD_CRC_TH;
5669
		band = IEEE80211_BAND_5GHZ;
5670
	} else {
5671
		IWL_WARN(priv, "Invalid scan band count\n");
Z
Zhu Yi 已提交
5672 5673 5674 5675 5676 5677
		goto done;
	}

	/* select Rx antennas */
	scan->flags |= iwl3945_get_antenna_flags(priv);

5678
	if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
Z
Zhu Yi 已提交
5679 5680
		scan->filter_flags = RXON_FILTER_PROMISC_MSK;

5681 5682 5683 5684
	scan->channel_count =
		iwl3945_get_channels_for_scan(priv, band, 1, /* active */
					      n_probes,
			(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
Z
Zhu Yi 已提交
5685

5686 5687 5688 5689 5690
	if (scan->channel_count == 0) {
		IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
		goto done;
	}

Z
Zhu Yi 已提交
5691
	cmd.len += le16_to_cpu(scan->tx_cmd.len) +
C
Christoph Hellwig 已提交
5692
	    scan->channel_count * sizeof(struct iwl3945_scan_channel);
Z
Zhu Yi 已提交
5693 5694 5695 5696
	cmd.data = scan;
	scan->len = cpu_to_le16(cmd.len);

	set_bit(STATUS_SCAN_HW, &priv->status);
C
Christoph Hellwig 已提交
5697
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
5698 5699 5700 5701 5702 5703 5704 5705 5706 5707
	if (rc)
		goto done;

	queue_delayed_work(priv->workqueue, &priv->scan_check,
			   IWL_SCAN_CHECK_WATCHDOG);

	mutex_unlock(&priv->mutex);
	return;

 done:
5708 5709 5710 5711 5712 5713 5714 5715
	/* can not perform scan make sure we clear scanning
	 * bits from status so next scan request can be performed.
	 * if we dont clear scanning status bit here all next scan
	 * will fail
	*/
	clear_bit(STATUS_SCAN_HW, &priv->status);
	clear_bit(STATUS_SCANNING, &priv->status);

5716
	/* inform mac80211 scan aborted */
Z
Zhu Yi 已提交
5717 5718 5719 5720
	queue_work(priv->workqueue, &priv->scan_completed);
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5721
static void iwl3945_bg_up(struct work_struct *data)
Z
Zhu Yi 已提交
5722
{
5723
	struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
Z
Zhu Yi 已提交
5724 5725 5726 5727 5728

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5729
	__iwl3945_up(priv);
Z
Zhu Yi 已提交
5730
	mutex_unlock(&priv->mutex);
5731
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
5732 5733
}

C
Christoph Hellwig 已提交
5734
static void iwl3945_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
5735
{
5736
	struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Z
Zhu Yi 已提交
5737 5738 5739 5740

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

C
Christoph Hellwig 已提交
5741
	iwl3945_down(priv);
Z
Zhu Yi 已提交
5742 5743 5744
	queue_work(priv->workqueue, &priv->up);
}

C
Christoph Hellwig 已提交
5745
static void iwl3945_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
5746
{
5747 5748
	struct iwl_priv *priv =
	    container_of(data, struct iwl_priv, rx_replenish);
Z
Zhu Yi 已提交
5749 5750 5751 5752 5753

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5754
	iwl3945_rx_replenish(priv);
Z
Zhu Yi 已提交
5755 5756 5757
	mutex_unlock(&priv->mutex);
}

5758 5759
#define IWL_DELAY_NEXT_SCAN (HZ*2)

5760
static void iwl3945_post_associate(struct iwl_priv *priv)
Z
Zhu Yi 已提交
5761 5762 5763 5764
{
	int rc = 0;
	struct ieee80211_conf *conf = NULL;

5765
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
5766
		IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
Z
Zhu Yi 已提交
5767 5768 5769 5770
		return;
	}


J
Johannes Berg 已提交
5771
	IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
5772
			priv->assoc_id, priv->active39_rxon.bssid_addr);
Z
Zhu Yi 已提交
5773 5774 5775 5776

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

A
Abhijeet Kolekar 已提交
5777
	if (!priv->vif || !priv->is_open)
5778
		return;
A
Abhijeet Kolekar 已提交
5779

C
Christoph Hellwig 已提交
5780
	iwl3945_scan_cancel_timeout(priv, 200);
5781

Z
Zhu Yi 已提交
5782 5783
	conf = ieee80211_get_hw_conf(priv->hw);

5784
	priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
5785
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5786

5787
	memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
C
Christoph Hellwig 已提交
5788 5789
	iwl3945_setup_rxon_timing(priv);
	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
5790 5791
			      sizeof(priv->rxon_timing), &priv->rxon_timing);
	if (rc)
5792
		IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
Z
Zhu Yi 已提交
5793 5794
			    "Attempting to continue.\n");

5795
	priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
Z
Zhu Yi 已提交
5796

5797
	priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
Z
Zhu Yi 已提交
5798 5799 5800 5801 5802

	IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
			priv->assoc_id, priv->beacon_int);

	if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5803
		priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
5804
	else
5805
		priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Z
Zhu Yi 已提交
5806

5807
	if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
Z
Zhu Yi 已提交
5808
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5809
			priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
5810
		else
5811
			priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
5812

5813
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5814
			priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Z
Zhu Yi 已提交
5815 5816 5817

	}

C
Christoph Hellwig 已提交
5818
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5819 5820

	switch (priv->iw_mode) {
5821
	case NL80211_IFTYPE_STATION:
C
Christoph Hellwig 已提交
5822
		iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Z
Zhu Yi 已提交
5823 5824
		break;

5825
	case NL80211_IFTYPE_ADHOC:
Z
Zhu Yi 已提交
5826

5827
		priv->assoc_id = 1;
C
Christoph Hellwig 已提交
5828
		iwl3945_add_station(priv, priv->bssid, 0, 0);
Z
Zhu Yi 已提交
5829
		iwl3945_sync_sta(priv, IWL_STA_ID,
5830
				 (priv->band == IEEE80211_BAND_5GHZ) ?
Z
Zhu Yi 已提交
5831 5832
				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
				 CMD_ASYNC);
C
Christoph Hellwig 已提交
5833 5834
		iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
		iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
5835 5836 5837 5838

		break;

	default:
5839
		 IWL_ERR(priv, "%s Should not be called in %d mode\n",
5840
			   __func__, priv->iw_mode);
Z
Zhu Yi 已提交
5841 5842 5843
		break;
	}

C
Christoph Hellwig 已提交
5844
	iwl3945_activate_qos(priv, 0);
5845

5846 5847
	/* we have just associated, don't start scan too early */
	priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5848 5849
}

C
Christoph Hellwig 已提交
5850
static void iwl3945_bg_abort_scan(struct work_struct *work)
Z
Zhu Yi 已提交
5851
{
5852
	struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
Z
Zhu Yi 已提交
5853

5854
	if (!iwl_is_ready(priv))
Z
Zhu Yi 已提交
5855 5856 5857 5858 5859
		return;

	mutex_lock(&priv->mutex);

	set_bit(STATUS_SCAN_ABORTING, &priv->status);
C
Christoph Hellwig 已提交
5860
	iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
5861 5862 5863 5864

	mutex_unlock(&priv->mutex);
}

5865
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
5866

C
Christoph Hellwig 已提交
5867
static void iwl3945_bg_scan_completed(struct work_struct *work)
Z
Zhu Yi 已提交
5868
{
5869 5870
	struct iwl_priv *priv =
	    container_of(work, struct iwl_priv, scan_completed);
Z
Zhu Yi 已提交
5871 5872 5873 5874 5875 5876

	IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");

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

5877
	if (test_bit(STATUS_CONF_PENDING, &priv->status))
5878
		iwl3945_mac_config(priv->hw, 0);
5879

Z
Zhu Yi 已提交
5880 5881 5882 5883 5884
	ieee80211_scan_completed(priv->hw);

	/* Since setting the TXPOWER may have been deferred while
	 * performing the scan, fire one off */
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5885
	iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
5886 5887 5888 5889 5890 5891 5892 5893 5894
	mutex_unlock(&priv->mutex);
}

/*****************************************************************************
 *
 * mac80211 entry point functions
 *
 *****************************************************************************/

5895 5896
#define UCODE_READY_TIMEOUT	(2 * HZ)

C
Christoph Hellwig 已提交
5897
static int iwl3945_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
5898
{
5899
	struct iwl_priv *priv = hw->priv;
5900
	int ret;
Z
Zhu Yi 已提交
5901 5902 5903

	IWL_DEBUG_MAC80211("enter\n");

5904
	if (pci_enable_device(priv->pci_dev)) {
5905
		IWL_ERR(priv, "Fail to pci_enable_device\n");
5906 5907 5908 5909 5910 5911 5912 5913
		return -ENODEV;
	}
	pci_restore_state(priv->pci_dev);
	pci_enable_msi(priv->pci_dev);

	ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
			  DRV_NAME, priv);
	if (ret) {
5914
		IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5915 5916 5917
		goto out_disable_msi;
	}

Z
Zhu Yi 已提交
5918 5919 5920
	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);

5921
	memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
5922 5923 5924 5925 5926 5927
	/* fetch ucode file from disk, alloc and copy to bus-master buffers ...
	 * ucode filename and max sizes are card-specific. */

	if (!priv->ucode_code.len) {
		ret = iwl3945_read_ucode(priv);
		if (ret) {
5928
			IWL_ERR(priv, "Could not read microcode: %d\n", ret);
5929 5930 5931 5932
			mutex_unlock(&priv->mutex);
			goto out_release_irq;
		}
	}
Z
Zhu Yi 已提交
5933

5934
	ret = __iwl3945_up(priv);
Z
Zhu Yi 已提交
5935 5936

	mutex_unlock(&priv->mutex);
5937

5938 5939
	iwl3945_rfkill_set_hw_state(priv);

5940 5941 5942 5943 5944 5945 5946 5947
	if (ret)
		goto out_release_irq;

	IWL_DEBUG_INFO("Start UP work.\n");

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

5948 5949 5950 5951 5952 5953 5954
	/* Wait for START_ALIVE from ucode. Otherwise callbacks from
	 * mac80211 will not be run successfully. */
	ret = wait_event_interruptible_timeout(priv->wait_command_queue,
			test_bit(STATUS_READY, &priv->status),
			UCODE_READY_TIMEOUT);
	if (!ret) {
		if (!test_bit(STATUS_READY, &priv->status)) {
5955 5956 5957
			IWL_ERR(priv,
				"Wait for START_ALIVE timeout after %dms.\n",
				jiffies_to_msecs(UCODE_READY_TIMEOUT));
5958 5959 5960 5961 5962
			ret = -ETIMEDOUT;
			goto out_release_irq;
		}
	}

5963
	priv->is_open = 1;
Z
Zhu Yi 已提交
5964 5965
	IWL_DEBUG_MAC80211("leave\n");
	return 0;
5966 5967 5968 5969 5970

out_release_irq:
	free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
	pci_disable_msi(priv->pci_dev);
5971 5972 5973
	pci_disable_device(priv->pci_dev);
	priv->is_open = 0;
	IWL_DEBUG_MAC80211("leave - failed\n");
5974
	return ret;
Z
Zhu Yi 已提交
5975 5976
}

C
Christoph Hellwig 已提交
5977
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
5978
{
5979
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
5980 5981

	IWL_DEBUG_MAC80211("enter\n");
5982

5983 5984 5985 5986 5987
	if (!priv->is_open) {
		IWL_DEBUG_MAC80211("leave - skip\n");
		return;
	}

Z
Zhu Yi 已提交
5988
	priv->is_open = 0;
5989

5990
	if (iwl_is_ready_rf(priv)) {
5991 5992 5993
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
5994 5995
		mutex_lock(&priv->mutex);
		iwl3945_scan_cancel_timeout(priv, 100);
5996 5997 5998
		mutex_unlock(&priv->mutex);
	}

5999 6000 6001 6002 6003 6004 6005
	iwl3945_down(priv);

	flush_workqueue(priv->workqueue);
	free_irq(priv->pci_dev->irq, priv);
	pci_disable_msi(priv->pci_dev);
	pci_save_state(priv->pci_dev);
	pci_disable_device(priv->pci_dev);
6006

Z
Zhu Yi 已提交
6007 6008 6009
	IWL_DEBUG_MAC80211("leave\n");
}

6010
static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
6011
{
6012
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6013 6014 6015 6016

	IWL_DEBUG_MAC80211("enter\n");

	IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6017
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
6018

6019
	if (iwl3945_tx_skb(priv, skb))
Z
Zhu Yi 已提交
6020 6021 6022
		dev_kfree_skb_any(skb);

	IWL_DEBUG_MAC80211("leave\n");
6023
	return NETDEV_TX_OK;
Z
Zhu Yi 已提交
6024 6025
}

C
Christoph Hellwig 已提交
6026
static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6027 6028
				 struct ieee80211_if_init_conf *conf)
{
6029
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6030 6031
	unsigned long flags;

6032
	IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Z
Zhu Yi 已提交
6033

6034 6035
	if (priv->vif) {
		IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6036
		return -EOPNOTSUPP;
Z
Zhu Yi 已提交
6037 6038 6039
	}

	spin_lock_irqsave(&priv->lock, flags);
6040
	priv->vif = conf->vif;
6041
	priv->iw_mode = conf->type;
Z
Zhu Yi 已提交
6042 6043 6044 6045

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6046 6047

	if (conf->mac_addr) {
J
Johannes Berg 已提交
6048
		IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6049 6050 6051
		memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
	}

6052
	if (iwl_is_ready(priv))
6053
		iwl3945_set_mode(priv, conf->type);
Z
Zhu Yi 已提交
6054 6055 6056

	mutex_unlock(&priv->mutex);

6057
	IWL_DEBUG_MAC80211("leave\n");
Z
Zhu Yi 已提交
6058 6059 6060 6061
	return 0;
}

/**
C
Christoph Hellwig 已提交
6062
 * iwl3945_mac_config - mac80211 config callback
Z
Zhu Yi 已提交
6063 6064 6065 6066 6067
 *
 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
 * be set inappropriately and the driver currently sets the hardware up to
 * use it whenever needed.
 */
6068
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
Z
Zhu Yi 已提交
6069
{
6070
	struct iwl_priv *priv = hw->priv;
6071
	const struct iwl_channel_info *ch_info;
6072
	struct ieee80211_conf *conf = &hw->conf;
Z
Zhu Yi 已提交
6073
	unsigned long flags;
6074
	int ret = 0;
Z
Zhu Yi 已提交
6075 6076

	mutex_lock(&priv->mutex);
6077
	IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Z
Zhu Yi 已提交
6078

6079
	if (!iwl_is_ready(priv)) {
Z
Zhu Yi 已提交
6080
		IWL_DEBUG_MAC80211("leave - not ready\n");
6081 6082
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6083 6084
	}

6085
	if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
Z
Zhu Yi 已提交
6086
		     test_bit(STATUS_SCANNING, &priv->status))) {
6087 6088
		IWL_DEBUG_MAC80211("leave - scanning\n");
		set_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6089
		mutex_unlock(&priv->mutex);
6090
		return 0;
Z
Zhu Yi 已提交
6091 6092 6093 6094
	}

	spin_lock_irqsave(&priv->lock, flags);

6095 6096
	ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
					   conf->channel->hw_value);
Z
Zhu Yi 已提交
6097
	if (!is_channel_valid(ch_info)) {
6098
		IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6099
			       conf->channel->hw_value, conf->channel->band);
Z
Zhu Yi 已提交
6100 6101
		IWL_DEBUG_MAC80211("leave - invalid channel\n");
		spin_unlock_irqrestore(&priv->lock, flags);
6102 6103
		ret = -EINVAL;
		goto out;
Z
Zhu Yi 已提交
6104 6105
	}

6106
	iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Z
Zhu Yi 已提交
6107

6108
	iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Z
Zhu Yi 已提交
6109 6110 6111 6112

	/* The list of supported rates and rate mask can be different
	 * for each phymode; since the phymode may have changed, reset
	 * the rate mask to what mac80211 lists */
C
Christoph Hellwig 已提交
6113
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6114 6115 6116 6117 6118

	spin_unlock_irqrestore(&priv->lock, flags);

#ifdef IEEE80211_CONF_CHANNEL_SWITCH
	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
C
Christoph Hellwig 已提交
6119
		iwl3945_hw_channel_switch(priv, conf->channel);
6120
		goto out;
Z
Zhu Yi 已提交
6121 6122 6123
	}
#endif

C
Christoph Hellwig 已提交
6124
	iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Z
Zhu Yi 已提交
6125 6126 6127

	if (!conf->radio_enabled) {
		IWL_DEBUG_MAC80211("leave - radio disabled\n");
6128
		goto out;
Z
Zhu Yi 已提交
6129 6130
	}

6131
	if (iwl_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6132
		IWL_DEBUG_MAC80211("leave - RF kill\n");
6133 6134
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6135 6136
	}

C
Christoph Hellwig 已提交
6137
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6138

6139 6140
	if (memcmp(&priv->active39_rxon,
		   &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
C
Christoph Hellwig 已提交
6141
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6142 6143 6144 6145 6146
	else
		IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");

	IWL_DEBUG_MAC80211("leave\n");

6147
out:
6148
	clear_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6149
	mutex_unlock(&priv->mutex);
6150
	return ret;
Z
Zhu Yi 已提交
6151 6152
}

6153
static void iwl3945_config_ap(struct iwl_priv *priv)
Z
Zhu Yi 已提交
6154 6155 6156
{
	int rc = 0;

6157
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
6158 6159 6160
		return;

	/* The following should be done only at AP bring up */
6161
	if (!(iwl3945_is_associated(priv))) {
Z
Zhu Yi 已提交
6162 6163

		/* RXON - unassoc (to set timing command) */
6164
		priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6165
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6166 6167

		/* RXON Timing */
6168
		memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
C
Christoph Hellwig 已提交
6169 6170
		iwl3945_setup_rxon_timing(priv);
		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
6171 6172
				sizeof(priv->rxon_timing), &priv->rxon_timing);
		if (rc)
6173
			IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
Z
Zhu Yi 已提交
6174 6175 6176
					"Attempting to continue.\n");

		/* FIXME: what should be the assoc_id for AP? */
6177
		priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
Z
Zhu Yi 已提交
6178
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6179
			priv->staging39_rxon.flags |=
Z
Zhu Yi 已提交
6180 6181
				RXON_FLG_SHORT_PREAMBLE_MSK;
		else
6182
			priv->staging39_rxon.flags &=
Z
Zhu Yi 已提交
6183 6184
				~RXON_FLG_SHORT_PREAMBLE_MSK;

6185
		if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
Z
Zhu Yi 已提交
6186 6187
			if (priv->assoc_capability &
				WLAN_CAPABILITY_SHORT_SLOT_TIME)
6188
				priv->staging39_rxon.flags |=
Z
Zhu Yi 已提交
6189 6190
					RXON_FLG_SHORT_SLOT_MSK;
			else
6191
				priv->staging39_rxon.flags &=
Z
Zhu Yi 已提交
6192 6193
					~RXON_FLG_SHORT_SLOT_MSK;

6194
			if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
6195
				priv->staging39_rxon.flags &=
Z
Zhu Yi 已提交
6196 6197 6198
					~RXON_FLG_SHORT_SLOT_MSK;
		}
		/* restore RXON assoc */
6199
		priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6200
		iwl3945_commit_rxon(priv);
6201
		iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
6202
	}
C
Christoph Hellwig 已提交
6203
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6204 6205 6206 6207 6208 6209

	/* FIXME - we need to add code here to detect a totally new
	 * configuration, reset the AP, unassoc, rxon timing, assoc,
	 * clear sta table, add BCAST sta... */
}

6210 6211
static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
6212
					struct ieee80211_if_conf *conf)
Z
Zhu Yi 已提交
6213
{
6214
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6215 6216 6217 6218 6219
	int rc;

	if (conf == NULL)
		return -EIO;

6220 6221 6222 6223 6224
	if (priv->vif != vif) {
		IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
		return 0;
	}

6225
	/* handle this temporarily here */
6226
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6227 6228 6229 6230
	    conf->changed & IEEE80211_IFCC_BEACON) {
		struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
		if (!beacon)
			return -ENOMEM;
6231
		mutex_lock(&priv->mutex);
6232
		rc = iwl3945_mac_beacon_update(hw, beacon);
6233
		mutex_unlock(&priv->mutex);
6234 6235 6236 6237
		if (rc)
			return rc;
	}

6238
	if (!iwl_is_alive(priv))
6239 6240
		return -EAGAIN;

Z
Zhu Yi 已提交
6241 6242 6243
	mutex_lock(&priv->mutex);

	if (conf->bssid)
J
Johannes Berg 已提交
6244
		IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
Z
Zhu Yi 已提交
6245

6246 6247 6248
/*
 * very dubious code was here; the probe filtering flag is never set:
 *
Z
Zhu Yi 已提交
6249 6250
	if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
	    !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6251
 */
Z
Zhu Yi 已提交
6252

6253
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
6254 6255 6256
		if (!conf->bssid) {
			conf->bssid = priv->mac_addr;
			memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
J
Johannes Berg 已提交
6257 6258
			IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
					   conf->bssid);
Z
Zhu Yi 已提交
6259 6260 6261 6262
		}
		if (priv->ibss_beacon)
			dev_kfree_skb(priv->ibss_beacon);

6263
		priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
Z
Zhu Yi 已提交
6264 6265
	}

6266
	if (iwl_is_rfkill(priv))
6267 6268
		goto done;

Z
Zhu Yi 已提交
6269 6270 6271 6272
	if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
	    !is_multicast_ether_addr(conf->bssid)) {
		/* If there is currently a HW scan going on in the background
		 * then we need to cancel it else the RXON below will fail. */
C
Christoph Hellwig 已提交
6273
		if (iwl3945_scan_cancel_timeout(priv, 100)) {
6274
			IWL_WARN(priv, "Aborted scan still in progress "
Z
Zhu Yi 已提交
6275 6276 6277 6278 6279
				    "after 100ms\n");
			IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
			mutex_unlock(&priv->mutex);
			return -EAGAIN;
		}
6280
		memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
Z
Zhu Yi 已提交
6281 6282 6283 6284 6285 6286 6287

		/* TODO: Audit driver for usage of these members and see
		 * if mac80211 deprecates them (priv->bssid looks like it
		 * shouldn't be there, but I haven't scanned the IBSS code
		 * to verify) - jpk */
		memcpy(priv->bssid, conf->bssid, ETH_ALEN);

6288
		if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
6289
			iwl3945_config_ap(priv);
Z
Zhu Yi 已提交
6290
		else {
C
Christoph Hellwig 已提交
6291
			rc = iwl3945_commit_rxon(priv);
6292
			if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
C
Christoph Hellwig 已提交
6293
				iwl3945_add_station(priv,
6294
					priv->active39_rxon.bssid_addr, 1, 0);
Z
Zhu Yi 已提交
6295 6296 6297
		}

	} else {
C
Christoph Hellwig 已提交
6298
		iwl3945_scan_cancel_timeout(priv, 100);
6299
		priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6300
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6301 6302
	}

6303
 done:
Z
Zhu Yi 已提交
6304 6305 6306 6307 6308 6309
	IWL_DEBUG_MAC80211("leave\n");
	mutex_unlock(&priv->mutex);

	return 0;
}

C
Christoph Hellwig 已提交
6310
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6311 6312 6313 6314
				 unsigned int changed_flags,
				 unsigned int *total_flags,
				 int mc_count, struct dev_addr_list *mc_list)
{
6315
	struct iwl_priv *priv = hw->priv;
6316
	__le32 *filter_flags = &priv->staging39_rxon.filter_flags;
6317

Z
Zhu, Yi 已提交
6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337
	IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
			changed_flags, *total_flags);

	if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
		if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
			*filter_flags |= RXON_FILTER_PROMISC_MSK;
		else
			*filter_flags &= ~RXON_FILTER_PROMISC_MSK;
	}
	if (changed_flags & FIF_ALLMULTI) {
		if (*total_flags & FIF_ALLMULTI)
			*filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
		else
			*filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
	}
	if (changed_flags & FIF_CONTROL) {
		if (*total_flags & FIF_CONTROL)
			*filter_flags |= RXON_FILTER_CTL2HOST_MSK;
		else
			*filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6338
	}
Z
Zhu, Yi 已提交
6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352
	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 |
6353
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6354 6355
}

C
Christoph Hellwig 已提交
6356
static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6357 6358
				     struct ieee80211_if_init_conf *conf)
{
6359
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6360 6361 6362 6363

	IWL_DEBUG_MAC80211("enter\n");

	mutex_lock(&priv->mutex);
6364

6365
	if (iwl_is_ready_rf(priv)) {
6366
		iwl3945_scan_cancel_timeout(priv, 100);
6367
		priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6368 6369
		iwl3945_commit_rxon(priv);
	}
6370 6371
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
Z
Zhu Yi 已提交
6372 6373 6374 6375 6376 6377 6378
		memset(priv->bssid, 0, ETH_ALEN);
	}
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
}

6379 6380 6381 6382 6383 6384 6385
#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)

static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
				     struct ieee80211_vif *vif,
				     struct ieee80211_bss_conf *bss_conf,
				     u32 changes)
{
6386
	struct iwl_priv *priv = hw->priv;
6387 6388 6389 6390 6391 6392 6393

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

	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
		IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
				   bss_conf->use_short_preamble);
		if (bss_conf->use_short_preamble)
6394
			priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6395
		else
6396
			priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6397 6398 6399 6400 6401
	}

	if (changes & BSS_CHANGED_ERP_CTS_PROT) {
		IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
		if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6402
			priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6403
		else
6404
			priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415
	}

	if (changes & BSS_CHANGED_ASSOC) {
		IWL_DEBUG_MAC80211("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;
6416
			priv->timestamp = bss_conf->timestamp;
6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433
			priv->assoc_capability = bss_conf->assoc_capability;
			priv->next_scan_jiffies = jiffies +
					IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
			mutex_lock(&priv->mutex);
			iwl3945_post_associate(priv);
			mutex_unlock(&priv->mutex);
		} else {
			priv->assoc_id = 0;
			IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
		}
	} else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
			IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
			iwl3945_send_rxon_assoc(priv);
	}

}

C
Christoph Hellwig 已提交
6434
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Z
Zhu Yi 已提交
6435 6436 6437
{
	int rc = 0;
	unsigned long flags;
6438
	struct iwl_priv *priv = hw->priv;
6439
	DECLARE_SSID_BUF(ssid_buf);
Z
Zhu Yi 已提交
6440 6441 6442

	IWL_DEBUG_MAC80211("enter\n");

6443
	mutex_lock(&priv->mutex);
Z
Zhu Yi 已提交
6444 6445
	spin_lock_irqsave(&priv->lock, flags);

6446
	if (!iwl_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6447 6448 6449 6450 6451
		rc = -EIO;
		IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
		goto out_unlock;
	}

6452 6453 6454 6455 6456 6457
	/* we don't schedule scan within next_scan_jiffies period */
	if (priv->next_scan_jiffies &&
			time_after(priv->next_scan_jiffies, jiffies)) {
		rc = -EAGAIN;
		goto out_unlock;
	}
6458 6459 6460 6461
	/* if we just finished scan ask for delay for a broadcast scan */
	if ((len == 0) && priv->last_scan_jiffies &&
	    time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
		       jiffies)) {
Z
Zhu Yi 已提交
6462 6463 6464 6465
		rc = -EAGAIN;
		goto out_unlock;
	}
	if (len) {
6466
		IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6467
			       print_ssid(ssid_buf, ssid, len), (int)len);
Z
Zhu Yi 已提交
6468 6469 6470 6471 6472

		priv->one_direct_scan = 1;
		priv->direct_ssid_len = (u8)
		    min((u8) len, (u8) IW_ESSID_MAX_SIZE);
		memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6473 6474
	} else
		priv->one_direct_scan = 0;
Z
Zhu Yi 已提交
6475

C
Christoph Hellwig 已提交
6476
	rc = iwl3945_scan_initiate(priv);
Z
Zhu Yi 已提交
6477 6478 6479 6480 6481

	IWL_DEBUG_MAC80211("leave\n");

out_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
6482
	mutex_unlock(&priv->mutex);
Z
Zhu Yi 已提交
6483 6484 6485 6486

	return rc;
}

C
Christoph Hellwig 已提交
6487
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6488 6489 6490
			       struct ieee80211_vif *vif,
			       struct ieee80211_sta *sta,
			       struct ieee80211_key_conf *key)
Z
Zhu Yi 已提交
6491
{
6492
	struct iwl_priv *priv = hw->priv;
6493
	const u8 *addr;
Z
Zhu Yi 已提交
6494 6495
	int rc = 0;
	u8 sta_id;
6496 6497
	static const u8 bcast_addr[ETH_ALEN] =
		{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
Z
Zhu Yi 已提交
6498 6499 6500

	IWL_DEBUG_MAC80211("enter\n");

6501
	if (iwl3945_mod_params.sw_crypto) {
Z
Zhu Yi 已提交
6502 6503 6504 6505
		IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
		return -EOPNOTSUPP;
	}

6506
	addr = sta ? sta->addr : bcast_addr;
Z
Zhu Yi 已提交
6507

C
Christoph Hellwig 已提交
6508
	sta_id = iwl3945_hw_find_station(priv, addr);
Z
Zhu Yi 已提交
6509
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
6510 6511
		IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
				   addr);
Z
Zhu Yi 已提交
6512 6513 6514 6515 6516
		return -EINVAL;
	}

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
6517
	iwl3945_scan_cancel_timeout(priv, 100);
6518

Z
Zhu Yi 已提交
6519 6520
	switch (cmd) {
	case  SET_KEY:
C
Christoph Hellwig 已提交
6521
		rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Z
Zhu Yi 已提交
6522
		if (!rc) {
C
Christoph Hellwig 已提交
6523 6524
			iwl3945_set_rxon_hwcrypto(priv, 1);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6525 6526 6527 6528 6529 6530
			key->hw_key_idx = sta_id;
			IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
		}
		break;
	case DISABLE_KEY:
C
Christoph Hellwig 已提交
6531
		rc = iwl3945_clear_sta_key_info(priv, sta_id);
Z
Zhu Yi 已提交
6532
		if (!rc) {
C
Christoph Hellwig 已提交
6533 6534
			iwl3945_set_rxon_hwcrypto(priv, 0);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547
			IWL_DEBUG_MAC80211("disable hwcrypto key\n");
		}
		break;
	default:
		rc = -EINVAL;
	}

	IWL_DEBUG_MAC80211("leave\n");
	mutex_unlock(&priv->mutex);

	return rc;
}

J
Johannes Berg 已提交
6548
static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
Z
Zhu Yi 已提交
6549 6550
			   const struct ieee80211_tx_queue_params *params)
{
6551
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6552 6553 6554 6555 6556
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211("enter\n");

6557
	if (!iwl_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

	if (queue >= AC_NUM) {
		IWL_DEBUG_MAC80211("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 =
6575
			cpu_to_le16((params->txop * 32));
Z
Zhu Yi 已提交
6576 6577 6578 6579 6580 6581 6582

	priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
	priv->qos_data.qos_active = 1;

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6583
	if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
6584 6585 6586
		iwl3945_activate_qos(priv, 1);
	else if (priv->assoc_id && iwl3945_is_associated(priv))
		iwl3945_activate_qos(priv, 0);
Z
Zhu Yi 已提交
6587 6588 6589 6590 6591 6592 6593

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
	return 0;
}

C
Christoph Hellwig 已提交
6594
static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6595 6596
				struct ieee80211_tx_queue_stats *stats)
{
6597
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6598
	int i, avail;
6599
	struct iwl_tx_queue *txq;
6600
	struct iwl_queue *q;
Z
Zhu Yi 已提交
6601 6602 6603 6604
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

6605
	if (!iwl_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6606 6607 6608 6609 6610 6611 6612
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

	spin_lock_irqsave(&priv->lock, flags);

	for (i = 0; i < AC_NUM; i++) {
6613
		txq = &priv->txq[i];
Z
Zhu Yi 已提交
6614
		q = &txq->q;
6615
		avail = iwl_queue_space(q);
Z
Zhu Yi 已提交
6616

6617 6618 6619
		stats[i].len = q->n_window - avail;
		stats[i].limit = q->n_window - q->high_mark;
		stats[i].count = q->n_window;
Z
Zhu Yi 已提交
6620 6621 6622 6623 6624 6625 6626 6627 6628

	}
	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
6629
static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6630
{
6631
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6632 6633 6634 6635 6636
	unsigned long flags;

	mutex_lock(&priv->mutex);
	IWL_DEBUG_MAC80211("enter\n");

6637
	iwl_reset_qos(priv);
6638

Z
Zhu Yi 已提交
6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650
	spin_lock_irqsave(&priv->lock, flags);
	priv->assoc_id = 0;
	priv->assoc_capability = 0;
	priv->call_post_assoc_from_beacon = 0;

	/* new association get rid of ibss beacon skb */
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	priv->ibss_beacon = NULL;

	priv->beacon_int = priv->hw->conf.beacon_int;
6651
	priv->timestamp = 0;
6652
	if ((priv->iw_mode == NL80211_IFTYPE_STATION))
Z
Zhu Yi 已提交
6653 6654 6655 6656
		priv->beacon_int = 0;

	spin_unlock_irqrestore(&priv->lock, flags);

6657
	if (!iwl_is_ready_rf(priv)) {
6658 6659 6660 6661 6662
		IWL_DEBUG_MAC80211("leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

6663 6664 6665
	/* we are restarting association process
	 * clear RXON_FILTER_ASSOC_MSK bit
	*/
6666
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
C
Christoph Hellwig 已提交
6667
		iwl3945_scan_cancel_timeout(priv, 100);
6668
		priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6669
		iwl3945_commit_rxon(priv);
6670 6671
	}

Z
Zhu Yi 已提交
6672
	/* Per mac80211.h: This is only used in IBSS mode... */
6673
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6674

Z
Zhu Yi 已提交
6675 6676 6677 6678 6679
		IWL_DEBUG_MAC80211("leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

C
Christoph Hellwig 已提交
6680
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6681 6682 6683 6684 6685 6686 6687

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");

}

6688
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
6689
{
6690
	struct iwl_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6691 6692 6693 6694
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

6695
	if (!iwl_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6696 6697 6698 6699
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

6700
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
Z
Zhu Yi 已提交
6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716
		IWL_DEBUG_MAC80211("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;

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

6717
	iwl_reset_qos(priv);
Z
Zhu Yi 已提交
6718

6719
	iwl3945_post_associate(priv);
Z
Zhu Yi 已提交
6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730


	return 0;
}

/*****************************************************************************
 *
 * sysfs attributes
 *
 *****************************************************************************/

6731
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
6732 6733 6734 6735 6736 6737 6738 6739

/*
 * The following adds a new attribute to the sysfs representation
 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
 * used for controlling the debug level.
 *
 * See the level definitions in iwl for details.
 */
6740 6741
static ssize_t show_debug_level(struct device *d,
				struct device_attribute *attr, char *buf)
Z
Zhu Yi 已提交
6742
{
6743
	struct iwl_priv *priv = d->driver_data;
6744 6745

	return sprintf(buf, "0x%08X\n", priv->debug_level);
Z
Zhu Yi 已提交
6746
}
6747 6748
static ssize_t store_debug_level(struct device *d,
				struct device_attribute *attr,
Z
Zhu Yi 已提交
6749 6750
				 const char *buf, size_t count)
{
6751
	struct iwl_priv *priv = d->driver_data;
6752 6753
	unsigned long val;
	int ret;
Z
Zhu Yi 已提交
6754

6755 6756
	ret = strict_strtoul(buf, 0, &val);
	if (ret)
T
Tomas Winkler 已提交
6757
		IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
Z
Zhu Yi 已提交
6758
	else
6759
		priv->debug_level = val;
Z
Zhu Yi 已提交
6760 6761 6762 6763

	return strnlen(buf, count);
}

6764 6765
static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
			show_debug_level, store_debug_level);
Z
Zhu Yi 已提交
6766

6767
#endif /* CONFIG_IWL3945_DEBUG */
Z
Zhu Yi 已提交
6768 6769 6770 6771

static ssize_t show_temperature(struct device *d,
				struct device_attribute *attr, char *buf)
{
6772
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6773

6774
	if (!iwl_is_alive(priv))
Z
Zhu Yi 已提交
6775 6776
		return -EAGAIN;

C
Christoph Hellwig 已提交
6777
	return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Z
Zhu Yi 已提交
6778 6779 6780 6781 6782 6783 6784
}

static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);

static ssize_t show_tx_power(struct device *d,
			     struct device_attribute *attr, char *buf)
{
6785
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6786 6787 6788 6789 6790 6791 6792
	return sprintf(buf, "%d\n", priv->user_txpower_limit);
}

static ssize_t store_tx_power(struct device *d,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
6793
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6794 6795 6796 6797 6798
	char *p = (char *)buf;
	u32 val;

	val = simple_strtoul(p, &p, 10);
	if (p == buf)
T
Tomas Winkler 已提交
6799
		IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
Z
Zhu Yi 已提交
6800
	else
C
Christoph Hellwig 已提交
6801
		iwl3945_hw_reg_set_txpower(priv, val);
Z
Zhu Yi 已提交
6802 6803 6804 6805 6806 6807 6808 6809 6810

	return count;
}

static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);

static ssize_t show_flags(struct device *d,
			  struct device_attribute *attr, char *buf)
{
6811
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6812

6813
	return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
Z
Zhu Yi 已提交
6814 6815 6816 6817 6818 6819
}

static ssize_t store_flags(struct device *d,
			   struct device_attribute *attr,
			   const char *buf, size_t count)
{
6820
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6821 6822 6823
	u32 flags = simple_strtoul(buf, NULL, 0);

	mutex_lock(&priv->mutex);
6824
	if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
Z
Zhu Yi 已提交
6825
		/* Cancel any currently running scans... */
C
Christoph Hellwig 已提交
6826
		if (iwl3945_scan_cancel_timeout(priv, 100))
6827
			IWL_WARN(priv, "Could not cancel scan.\n");
Z
Zhu Yi 已提交
6828 6829 6830
		else {
			IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
				       flags);
6831
			priv->staging39_rxon.flags = cpu_to_le32(flags);
C
Christoph Hellwig 已提交
6832
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);

static ssize_t show_filter_flags(struct device *d,
				 struct device_attribute *attr, char *buf)
{
6845
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6846 6847

	return sprintf(buf, "0x%04X\n",
6848
		le32_to_cpu(priv->active39_rxon.filter_flags));
Z
Zhu Yi 已提交
6849 6850 6851 6852 6853 6854
}

static ssize_t store_filter_flags(struct device *d,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
6855
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Z
Zhu Yi 已提交
6856 6857 6858
	u32 filter_flags = simple_strtoul(buf, NULL, 0);

	mutex_lock(&priv->mutex);
6859
	if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
Z
Zhu Yi 已提交
6860
		/* Cancel any currently running scans... */
C
Christoph Hellwig 已提交
6861
		if (iwl3945_scan_cancel_timeout(priv, 100))
6862
			IWL_WARN(priv, "Could not cancel scan.\n");
Z
Zhu Yi 已提交
6863 6864 6865
		else {
			IWL_DEBUG_INFO("Committing rxon.filter_flags = "
				       "0x%04X\n", filter_flags);
6866
			priv->staging39_rxon.filter_flags =
Z
Zhu Yi 已提交
6867
				cpu_to_le32(filter_flags);
C
Christoph Hellwig 已提交
6868
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6869 6870 6871 6872 6873 6874 6875 6876 6877 6878
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
		   store_filter_flags);

6879
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
6880 6881 6882 6883

static ssize_t show_measurement(struct device *d,
				struct device_attribute *attr, char *buf)
{
6884
	struct iwl_priv *priv = dev_get_drvdata(d);
6885
	struct iwl_spectrum_notification measure_report;
Z
Zhu Yi 已提交
6886
	u32 size = sizeof(measure_report), len = 0, ofs = 0;
6887
	u8 *data = (u8 *)&measure_report;
Z
Zhu Yi 已提交
6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916
	unsigned long flags;

	spin_lock_irqsave(&priv->lock, flags);
	if (!(priv->measurement_status & MEASUREMENT_READY)) {
		spin_unlock_irqrestore(&priv->lock, flags);
		return 0;
	}
	memcpy(&measure_report, &priv->measure_report, size);
	priv->measurement_status = 0;
	spin_unlock_irqrestore(&priv->lock, flags);

	while (size && (PAGE_SIZE - len)) {
		hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
				   PAGE_SIZE - len, 1);
		len = strlen(buf);
		if (PAGE_SIZE - len)
			buf[len++] = '\n';

		ofs += 16;
		size -= min(size, 16U);
	}

	return len;
}

static ssize_t store_measurement(struct device *d,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
6917
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
6918
	struct ieee80211_measurement_params params = {
6919
		.channel = le16_to_cpu(priv->active39_rxon.channel),
Z
Zhu Yi 已提交
6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942
		.start_time = cpu_to_le64(priv->last_tsf),
		.duration = cpu_to_le16(1),
	};
	u8 type = IWL_MEASURE_BASIC;
	u8 buffer[32];
	u8 channel;

	if (count) {
		char *p = buffer;
		strncpy(buffer, buf, min(sizeof(buffer), count));
		channel = simple_strtoul(p, NULL, 0);
		if (channel)
			params.channel = channel;

		p = buffer;
		while (*p && *p != ' ')
			p++;
		if (*p)
			type = simple_strtoul(p + 1, NULL, 0);
	}

	IWL_DEBUG_INFO("Invoking measurement of type %d on "
		       "channel %d (for '%s')\n", type, params.channel, buf);
C
Christoph Hellwig 已提交
6943
	iwl3945_get_measurement(priv, &params, type);
Z
Zhu Yi 已提交
6944 6945 6946 6947 6948 6949

	return count;
}

static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
		   show_measurement, store_measurement);
6950
#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Z
Zhu Yi 已提交
6951 6952 6953 6954 6955

static ssize_t store_retry_rate(struct device *d,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
6956
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967

	priv->retry_rate = simple_strtoul(buf, NULL, 0);
	if (priv->retry_rate <= 0)
		priv->retry_rate = 1;

	return count;
}

static ssize_t show_retry_rate(struct device *d,
			       struct device_attribute *attr, char *buf)
{
6968
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
6969 6970 6971 6972 6973 6974 6975 6976 6977 6978
	return sprintf(buf, "%d", priv->retry_rate);
}

static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
		   store_retry_rate);

static ssize_t store_power_level(struct device *d,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
6979
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
6980 6981 6982 6983 6984 6985
	int rc;
	int mode;

	mode = simple_strtoul(buf, NULL, 0);
	mutex_lock(&priv->mutex);

6986
	if (!iwl_is_ready(priv)) {
Z
Zhu Yi 已提交
6987 6988 6989 6990
		rc = -EAGAIN;
		goto out;
	}

6991 6992 6993
	if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
	    (mode == IWL39_POWER_AC))
		mode = IWL39_POWER_AC;
Z
Zhu Yi 已提交
6994 6995 6996 6997
	else
		mode |= IWL_POWER_ENABLED;

	if (mode != priv->power_mode) {
C
Christoph Hellwig 已提交
6998
		rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Z
Zhu Yi 已提交
6999 7000 7001 7002 7003 7004 7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033
		if (rc) {
			IWL_DEBUG_MAC80211("failed setting power mode.\n");
			goto out;
		}
		priv->power_mode = mode;
	}

	rc = count;

 out:
	mutex_unlock(&priv->mutex);
	return rc;
}

#define MAX_WX_STRING 80

/* Values are in microsecond */
static const s32 timeout_duration[] = {
	350000,
	250000,
	75000,
	37000,
	25000,
};
static const s32 period_duration[] = {
	400000,
	700000,
	1000000,
	1000000,
	1000000
};

static ssize_t show_power_level(struct device *d,
				struct device_attribute *attr, char *buf)
{
7034
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7035 7036 7037 7038 7039 7040
	int level = IWL_POWER_LEVEL(priv->power_mode);
	char *p = buf;

	p += sprintf(p, "%d ", level);
	switch (level) {
	case IWL_POWER_MODE_CAM:
7041
	case IWL39_POWER_AC:
Z
Zhu Yi 已提交
7042 7043
		p += sprintf(p, "(AC)");
		break;
7044
	case IWL39_POWER_BATTERY:
Z
Zhu Yi 已提交
7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058
		p += sprintf(p, "(BATTERY)");
		break;
	default:
		p += sprintf(p,
			     "(Timeout %dms, Period %dms)",
			     timeout_duration[level - 1] / 1000,
			     period_duration[level - 1] / 1000);
	}

	if (!(priv->power_mode & IWL_POWER_ENABLED))
		p += sprintf(p, " OFF\n");
	else
		p += sprintf(p, " \n");

7059
	return p - buf + 1;
Z
Zhu Yi 已提交
7060 7061 7062 7063 7064 7065 7066 7067 7068

}

static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
		   store_power_level);

static ssize_t show_channels(struct device *d,
			     struct device_attribute *attr, char *buf)
{
7069 7070
	/* all this shit doesn't belong into sysfs anyway */
	return 0;
Z
Zhu Yi 已提交
7071 7072 7073 7074 7075 7076 7077
}

static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);

static ssize_t show_statistics(struct device *d,
			       struct device_attribute *attr, char *buf)
{
7078
	struct iwl_priv *priv = dev_get_drvdata(d);
C
Christoph Hellwig 已提交
7079
	u32 size = sizeof(struct iwl3945_notif_statistics);
Z
Zhu Yi 已提交
7080
	u32 len = 0, ofs = 0;
7081
	u8 *data = (u8 *)&priv->statistics_39;
Z
Zhu Yi 已提交
7082 7083
	int rc = 0;

7084
	if (!iwl_is_alive(priv))
Z
Zhu Yi 已提交
7085 7086 7087
		return -EAGAIN;

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7088
	rc = iwl3945_send_statistics_request(priv);
Z
Zhu Yi 已提交
7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115
	mutex_unlock(&priv->mutex);

	if (rc) {
		len = sprintf(buf,
			      "Error sending statistics request: 0x%08X\n", rc);
		return len;
	}

	while (size && (PAGE_SIZE - len)) {
		hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
				   PAGE_SIZE - len, 1);
		len = strlen(buf);
		if (PAGE_SIZE - len)
			buf[len++] = '\n';

		ofs += 16;
		size -= min(size, 16U);
	}

	return len;
}

static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);

static ssize_t show_antenna(struct device *d,
			    struct device_attribute *attr, char *buf)
{
7116
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7117

7118
	if (!iwl_is_alive(priv))
Z
Zhu Yi 已提交
7119 7120 7121 7122 7123 7124 7125 7126 7127 7128
		return -EAGAIN;

	return sprintf(buf, "%d\n", priv->antenna);
}

static ssize_t store_antenna(struct device *d,
			     struct device_attribute *attr,
			     const char *buf, size_t count)
{
	int ant;
7129
	struct iwl_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140

	if (count == 0)
		return 0;

	if (sscanf(buf, "%1i", &ant) != 1) {
		IWL_DEBUG_INFO("not in hex or decimal form.\n");
		return count;
	}

	if ((ant >= 0) && (ant <= 2)) {
		IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
C
Christoph Hellwig 已提交
7141
		priv->antenna = (enum iwl3945_antenna)ant;
Z
Zhu Yi 已提交
7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153
	} else
		IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);


	return count;
}

static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);

static ssize_t show_status(struct device *d,
			   struct device_attribute *attr, char *buf)
{
7154
	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
7155
	if (!iwl_is_alive(priv))
Z
Zhu Yi 已提交
7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167 7168
		return -EAGAIN;
	return sprintf(buf, "0x%08x\n", (int)priv->status);
}

static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);

static ssize_t dump_error_log(struct device *d,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
	char *p = (char *)buf;

	if (p[0] == '1')
7169
		iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
Z
Zhu Yi 已提交
7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182

	return strnlen(buf, count);
}

static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);

static ssize_t dump_event_log(struct device *d,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
	char *p = (char *)buf;

	if (p[0] == '1')
7183
		iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
Z
Zhu Yi 已提交
7184 7185 7186 7187 7188 7189 7190 7191

	return strnlen(buf, count);
}

static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);

/*****************************************************************************
 *
T
Tomas Winkler 已提交
7192
 * driver setup and tear down
Z
Zhu Yi 已提交
7193 7194 7195
 *
 *****************************************************************************/

7196
static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
7197 7198 7199 7200 7201
{
	priv->workqueue = create_workqueue(DRV_NAME);

	init_waitqueue_head(&priv->wait_command_queue);

C
Christoph Hellwig 已提交
7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214
	INIT_WORK(&priv->up, iwl3945_bg_up);
	INIT_WORK(&priv->restart, iwl3945_bg_restart);
	INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
	INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
	INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
	INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
	INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
	INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
	INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
	INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
	INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);

	iwl3945_hw_setup_deferred_work(priv);
Z
Zhu Yi 已提交
7215 7216

	tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
C
Christoph Hellwig 已提交
7217
		     iwl3945_irq_tasklet, (unsigned long)priv);
Z
Zhu Yi 已提交
7218 7219
}

7220
static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
Z
Zhu Yi 已提交
7221
{
C
Christoph Hellwig 已提交
7222
	iwl3945_hw_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
7223

7224
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
7225 7226 7227 7228 7229
	cancel_delayed_work(&priv->scan_check);
	cancel_delayed_work(&priv->alive_start);
	cancel_work_sync(&priv->beacon_update);
}

C
Christoph Hellwig 已提交
7230
static struct attribute *iwl3945_sysfs_entries[] = {
Z
Zhu Yi 已提交
7231 7232 7233 7234 7235 7236
	&dev_attr_antenna.attr,
	&dev_attr_channels.attr,
	&dev_attr_dump_errors.attr,
	&dev_attr_dump_events.attr,
	&dev_attr_flags.attr,
	&dev_attr_filter_flags.attr,
7237
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7238 7239 7240 7241 7242 7243 7244 7245
	&dev_attr_measurement.attr,
#endif
	&dev_attr_power_level.attr,
	&dev_attr_retry_rate.attr,
	&dev_attr_statistics.attr,
	&dev_attr_status.attr,
	&dev_attr_temperature.attr,
	&dev_attr_tx_power.attr,
7246 7247 7248
#ifdef CONFIG_IWL3945_DEBUG
	&dev_attr_debug_level.attr,
#endif
Z
Zhu Yi 已提交
7249 7250 7251
	NULL
};

C
Christoph Hellwig 已提交
7252
static struct attribute_group iwl3945_attribute_group = {
Z
Zhu Yi 已提交
7253
	.name = NULL,		/* put in device directory */
C
Christoph Hellwig 已提交
7254
	.attrs = iwl3945_sysfs_entries,
Z
Zhu Yi 已提交
7255 7256
};

C
Christoph Hellwig 已提交
7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269
static struct ieee80211_ops iwl3945_hw_ops = {
	.tx = iwl3945_mac_tx,
	.start = iwl3945_mac_start,
	.stop = iwl3945_mac_stop,
	.add_interface = iwl3945_mac_add_interface,
	.remove_interface = iwl3945_mac_remove_interface,
	.config = iwl3945_mac_config,
	.config_interface = iwl3945_mac_config_interface,
	.configure_filter = iwl3945_configure_filter,
	.set_key = iwl3945_mac_set_key,
	.get_tx_stats = iwl3945_mac_get_tx_stats,
	.conf_tx = iwl3945_mac_conf_tx,
	.reset_tsf = iwl3945_mac_reset_tsf,
7270
	.bss_info_changed = iwl3945_bss_info_changed,
C
Christoph Hellwig 已提交
7271
	.hw_scan = iwl3945_mac_hw_scan
Z
Zhu Yi 已提交
7272 7273
};

7274
static int iwl3945_init_drv(struct iwl_priv *priv)
7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329
{
	int ret;

	priv->retry_rate = 1;
	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 */
	iwl3945_clear_stations_table(priv);

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

	priv->iw_mode = NL80211_IFTYPE_STATION;

	iwl_reset_qos(priv);

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

	priv->rates_mask = IWL_RATES_MASK;
	/* If power management is turned on, default to AC mode */
	priv->power_mode = IWL_POWER_AC;
	priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;

	ret = iwl3945_init_channel_map(priv);
	if (ret) {
		IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
		goto err;
	}

	ret = iwl3945_init_geos(priv);
	if (ret) {
		IWL_ERR(priv, "initializing geos failed: %d\n", ret);
		goto err_free_channel_map;
	}

	return 0;

err_free_channel_map:
	iwl3945_free_channel_map(priv);
err:
	return ret;
}

C
Christoph Hellwig 已提交
7330
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
7331 7332
{
	int err = 0;
7333
	struct iwl_priv *priv;
Z
Zhu Yi 已提交
7334
	struct ieee80211_hw *hw;
7335
	struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7336
	unsigned long flags;
Z
Zhu Yi 已提交
7337

7338 7339 7340 7341
	/***********************
	 * 1. Allocating HW data
	 * ********************/

Z
Zhu Yi 已提交
7342 7343
	/* mac80211 allocates memory for this device instance, including
	 *   space for this driver's private structure */
7344
	hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
Z
Zhu Yi 已提交
7345
	if (hw == NULL) {
7346
		printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
Z
Zhu Yi 已提交
7347 7348 7349 7350
		err = -ENOMEM;
		goto out;
	}
	priv = hw->priv;
7351
	SET_IEEE80211_DEV(hw, &pdev->dev);
7352

7353 7354
	if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
	     (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
7355 7356 7357
		IWL_ERR(priv,
			"invalid queues_num, should be between %d and %d\n",
			IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7358 7359 7360 7361
		err = -EINVAL;
		goto out;
	}

7362 7363 7364 7365
	/*
	 * Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan.
	 */
7366
	if (iwl3945_mod_params.disable_hw_scan) {
7367 7368 7369 7370
		IWL_DEBUG_INFO("Disabling hw_scan\n");
		iwl3945_hw_ops.hw_scan = NULL;
	}

7371

7372
	IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7373 7374
	priv->cfg = cfg;
	priv->pci_dev = pdev;
7375

7376
#ifdef CONFIG_IWL3945_DEBUG
7377
	priv->debug_level = iwl3945_mod_params.debug;
Z
Zhu Yi 已提交
7378 7379
	atomic_set(&priv->restrict_refcnt, 0);
#endif
7380 7381 7382 7383 7384
	hw->rate_control_algorithm = "iwl-3945-rs";
	hw->sta_data_size = sizeof(struct iwl3945_sta_priv);

	/* Select antenna (may be helpful if only one antenna is connected) */
	priv->antenna = (enum iwl3945_antenna)iwl3945_mod_params.antenna;
Z
Zhu Yi 已提交
7385

7386
	/* Tell mac80211 our characteristics */
7387
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
7388
		    IEEE80211_HW_NOISE_DBM;
Z
Zhu Yi 已提交
7389

7390 7391 7392 7393
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);

7394 7395
	hw->wiphy->fw_handles_regulatory = true;

7396
	/* 4 EDCA QOS priorities */
Z
Zhu Yi 已提交
7397 7398
	hw->queues = 4;

7399 7400 7401
	/***************************
	 * 2. Initializing PCI bus
	 * *************************/
Z
Zhu Yi 已提交
7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412
	if (pci_enable_device(pdev)) {
		err = -ENODEV;
		goto out_ieee80211_free_hw;
	}

	pci_set_master(pdev);

	err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
	if (!err)
		err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
	if (err) {
T
Tomas Winkler 已提交
7413
		IWL_WARN(priv, "No suitable DMA available.\n");
Z
Zhu Yi 已提交
7414 7415 7416 7417 7418 7419 7420
		goto out_pci_disable_device;
	}

	pci_set_drvdata(pdev, priv);
	err = pci_request_regions(pdev, DRV_NAME);
	if (err)
		goto out_pci_disable_device;
7421

7422 7423 7424
	/***********************
	 * 3. Read REV Register
	 * ********************/
Z
Zhu Yi 已提交
7425 7426 7427 7428 7429 7430 7431 7432 7433 7434
	priv->hw_base = pci_iomap(pdev, 0, 0);
	if (!priv->hw_base) {
		err = -ENODEV;
		goto out_pci_release_regions;
	}

	IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
			(unsigned long long) pci_resource_len(pdev, 0));
	IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);

7435 7436 7437
	/* We disable the RETRY_TIMEOUT register (0x41) to keep
	 * PCI Tx retries from interfering with C3 CPU state */
	pci_write_config_byte(pdev, 0x41, 0x00);
Z
Zhu Yi 已提交
7438

7439 7440
	/* amp init */
	err = priv->cfg->ops->lib->apm_ops.init(priv);
7441
	if (err < 0) {
7442 7443
		IWL_DEBUG_INFO("Failed to init APMG\n");
		goto out_iounmap;
7444
	}
Z
Zhu Yi 已提交
7445

7446 7447 7448
	/***********************
	 * 4. Read EEPROM
	 * ********************/
7449

7450 7451 7452
	/* Read the EEPROM */
	err = iwl3945_eeprom_init(priv);
	if (err) {
7453
		IWL_ERR(priv, "Unable to init EEPROM\n");
7454 7455 7456 7457 7458 7459
		goto out_remove_sysfs;
	}
	/* MAC Address location in EEPROM same for 3945/4965 */
	get_eeprom_mac(priv, priv->mac_addr);
	IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
	SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
Z
Zhu Yi 已提交
7460

7461 7462 7463
	/***********************
	 * 5. Setup HW Constants
	 * ********************/
Z
Zhu Yi 已提交
7464
	/* Device-specific setup */
7465
	if (iwl3945_hw_set_hw_params(priv)) {
7466
		IWL_ERR(priv, "failed to set hw settings\n");
Z
Zhu Yi 已提交
7467 7468 7469
		goto out_iounmap;
	}

7470 7471 7472 7473
	/***********************
	 * 6. Setup priv
	 * ********************/

7474
	err = iwl3945_init_drv(priv);
Z
Zhu Yi 已提交
7475
	if (err) {
7476 7477
		IWL_ERR(priv, "initializing driver failed\n");
		goto out_free_geos;
Z
Zhu Yi 已提交
7478 7479
	}

T
Tomas Winkler 已提交
7480 7481
	IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
		priv->cfg->name);
7482 7483 7484 7485 7486 7487 7488

	/***********************************
	 * 7. Initialize Module Parameters
	 * **********************************/

	/* Initialize module parameter values here */
	/* Disable radio (SW RF KILL) via parameter when loading driver */
7489
	if (iwl3945_mod_params.disable) {
7490 7491
		set_bit(STATUS_RF_KILL_SW, &priv->status);
		IWL_DEBUG_INFO("Radio disabled.\n");
7492 7493
	}

7494 7495 7496 7497 7498 7499 7500 7501 7502 7503

	/***********************
	 * 8. Setup Services
	 * ********************/

	spin_lock_irqsave(&priv->lock, flags);
	iwl3945_disable_interrupts(priv);
	spin_unlock_irqrestore(&priv->lock, flags);

	err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7504
	if (err) {
7505
		IWL_ERR(priv, "failed to create sysfs device attributes\n");
7506
		goto out_release_irq;
7507 7508
	}

7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522
	iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
	iwl3945_setup_deferred_work(priv);
	iwl3945_setup_rx_handlers(priv);

	/***********************
	 * 9. Conclude
	 * ********************/
	pci_save_state(pdev);
	pci_disable_device(pdev);

	/*********************************
	 * 10. Setup and Register mac80211
	 * *******************************/

7523 7524
	err = ieee80211_register_hw(priv->hw);
	if (err) {
7525
		IWL_ERR(priv, "Failed to register network device: %d\n", err);
7526
		goto  out_remove_sysfs;
7527
	}
Z
Zhu Yi 已提交
7528

7529 7530
	priv->hw->conf.beacon_int = 100;
	priv->mac80211_registered = 1;
7531

7532 7533
	err = iwl3945_rfkill_init(priv);
	if (err)
7534
		IWL_ERR(priv, "Unable to initialize RFKILL system. "
7535 7536
				  "Ignoring error: %d\n", err);

Z
Zhu Yi 已提交
7537 7538
	return 0;

7539 7540
 out_remove_sysfs:
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7541 7542
 out_free_geos:
	iwl3945_free_geos(priv);
Z
Zhu Yi 已提交
7543 7544 7545 7546

 out_release_irq:
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
7547
	iwl3945_unset_hw_params(priv);
Z
Zhu Yi 已提交
7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561

 out_iounmap:
	pci_iounmap(pdev, priv->hw_base);
 out_pci_release_regions:
	pci_release_regions(pdev);
 out_pci_disable_device:
	pci_disable_device(pdev);
	pci_set_drvdata(pdev, NULL);
 out_ieee80211_free_hw:
	ieee80211_free_hw(priv->hw);
 out:
	return err;
}

7562
static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
7563
{
7564
	struct iwl_priv *priv = pci_get_drvdata(pdev);
7565
	unsigned long flags;
Z
Zhu Yi 已提交
7566 7567 7568 7569 7570 7571 7572

	if (!priv)
		return;

	IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");

	set_bit(STATUS_EXIT_PENDING, &priv->status);
7573

7574 7575 7576 7577 7578 7579
	if (priv->mac80211_registered) {
		ieee80211_unregister_hw(priv->hw);
		priv->mac80211_registered = 0;
	} else {
		iwl3945_down(priv);
	}
Z
Zhu Yi 已提交
7580

7581 7582 7583 7584 7585 7586 7587 7588 7589
	/* make sure we flush any pending irq or
	 * tasklet for the driver
	 */
	spin_lock_irqsave(&priv->lock, flags);
	iwl3945_disable_interrupts(priv);
	spin_unlock_irqrestore(&priv->lock, flags);

	iwl_synchronize_irq(priv);

C
Christoph Hellwig 已提交
7590
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
7591

7592
	iwl3945_rfkill_unregister(priv);
C
Christoph Hellwig 已提交
7593
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
7594 7595

	if (priv->rxq.bd)
7596
		iwl_rx_queue_free(priv, &priv->rxq);
C
Christoph Hellwig 已提交
7597
	iwl3945_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
7598

7599
	iwl3945_unset_hw_params(priv);
C
Christoph Hellwig 已提交
7600
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
7601

7602 7603 7604
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

C
Christoph Hellwig 已提交
7605
	/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Z
Zhu Yi 已提交
7606 7607 7608 7609 7610 7611 7612 7613 7614 7615
	 * priv->workqueue... so we can't take down the workqueue
	 * until now... */
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;

	pci_iounmap(pdev, priv->hw_base);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	pci_set_drvdata(pdev, NULL);

7616 7617
	iwl3945_free_channel_map(priv);
	iwl3945_free_geos(priv);
7618
	kfree(priv->scan39);
Z
Zhu Yi 已提交
7619 7620 7621 7622 7623 7624 7625 7626
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	ieee80211_free_hw(priv->hw);
}

#ifdef CONFIG_PM

C
Christoph Hellwig 已提交
7627
static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Z
Zhu Yi 已提交
7628
{
7629
	struct iwl_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
7630

7631 7632 7633 7634 7635
	if (priv->is_open) {
		set_bit(STATUS_IN_SUSPEND, &priv->status);
		iwl3945_mac_stop(priv->hw);
		priv->is_open = 1;
	}
Z
Zhu Yi 已提交
7636 7637 7638 7639 7640 7641

	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

C
Christoph Hellwig 已提交
7642
static int iwl3945_pci_resume(struct pci_dev *pdev)
Z
Zhu Yi 已提交
7643
{
7644
	struct iwl_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
7645 7646 7647

	pci_set_power_state(pdev, PCI_D0);

7648 7649
	if (priv->is_open)
		iwl3945_mac_start(priv->hw);
Z
Zhu Yi 已提交
7650

7651
	clear_bit(STATUS_IN_SUSPEND, &priv->status);
Z
Zhu Yi 已提交
7652 7653 7654 7655 7656
	return 0;
}

#endif /* CONFIG_PM */

7657
/*************** RFKILL FUNCTIONS **********/
7658
#ifdef CONFIG_IWL3945_RFKILL
7659 7660 7661
/* software rf-kill from user */
static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
{
7662
	struct iwl_priv *priv = data;
7663 7664
	int err = 0;

7665
	if (!priv->rfkill)
7666 7667 7668 7669 7670
	return 0;

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

T
Tomas Winkler 已提交
7671
	IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
7672 7673 7674
	mutex_lock(&priv->mutex);

	switch (state) {
7675
	case RFKILL_STATE_UNBLOCKED:
7676
		if (iwl_is_rfkill_hw(priv)) {
7677
			err = -EBUSY;
7678 7679 7680
			goto out_unlock;
		}
		iwl3945_radio_kill_sw(priv, 0);
7681
		break;
7682
	case RFKILL_STATE_SOFT_BLOCKED:
7683 7684
		iwl3945_radio_kill_sw(priv, 1);
		break;
7685
	default:
7686
		IWL_WARN(priv, "received unexpected RFKILL state %d\n", state);
7687
		break;
7688
	}
7689
out_unlock:
7690 7691 7692 7693 7694
	mutex_unlock(&priv->mutex);

	return err;
}

7695
int iwl3945_rfkill_init(struct iwl_priv *priv)
7696 7697 7698 7699 7700 7701 7702
{
	struct device *device = wiphy_dev(priv->hw->wiphy);
	int ret = 0;

	BUG_ON(device == NULL);

	IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
7703 7704
	priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
	if (!priv->rfkill) {
7705
		IWL_ERR(priv, "Unable to allocate rfkill device.\n");
7706 7707 7708 7709
		ret = -ENOMEM;
		goto error;
	}

7710 7711 7712 7713 7714
	priv->rfkill->name = priv->cfg->name;
	priv->rfkill->data = priv;
	priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
	priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
	priv->rfkill->user_claim_unsupported = 1;
7715

7716 7717
	priv->rfkill->dev.class->suspend = NULL;
	priv->rfkill->dev.class->resume = NULL;
7718

7719
	ret = rfkill_register(priv->rfkill);
7720
	if (ret) {
7721
		IWL_ERR(priv, "Unable to register rfkill: %d\n", ret);
7722
		goto freed_rfkill;
7723 7724 7725 7726 7727 7728
	}

	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;

freed_rfkill:
7729 7730 7731
	if (priv->rfkill != NULL)
		rfkill_free(priv->rfkill);
	priv->rfkill = NULL;
7732 7733 7734 7735 7736 7737

error:
	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;
}

7738
void iwl3945_rfkill_unregister(struct iwl_priv *priv)
7739
{
7740 7741
	if (priv->rfkill)
		rfkill_unregister(priv->rfkill);
7742

7743
	priv->rfkill = NULL;
7744 7745 7746
}

/* set rf-kill to the right state. */
7747
void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
7748 7749
{

7750 7751 7752
	if (!priv->rfkill)
		return;

7753
	if (iwl_is_rfkill_hw(priv)) {
7754
		rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
7755
		return;
7756
	}
7757

7758
	if (!iwl_is_rfkill_sw(priv))
7759
		rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
7760
	else
7761
		rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
7762 7763 7764
}
#endif

Z
Zhu Yi 已提交
7765 7766 7767 7768 7769 7770
/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
7771
static struct pci_driver iwl3945_driver = {
Z
Zhu Yi 已提交
7772
	.name = DRV_NAME,
C
Christoph Hellwig 已提交
7773 7774 7775
	.id_table = iwl3945_hw_card_ids,
	.probe = iwl3945_pci_probe,
	.remove = __devexit_p(iwl3945_pci_remove),
Z
Zhu Yi 已提交
7776
#ifdef CONFIG_PM
C
Christoph Hellwig 已提交
7777 7778
	.suspend = iwl3945_pci_suspend,
	.resume = iwl3945_pci_resume,
Z
Zhu Yi 已提交
7779 7780 7781
#endif
};

C
Christoph Hellwig 已提交
7782
static int __init iwl3945_init(void)
Z
Zhu Yi 已提交
7783 7784 7785 7786 7787
{

	int ret;
	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7788 7789 7790

	ret = iwl3945_rate_control_register();
	if (ret) {
7791 7792
		printk(KERN_ERR DRV_NAME
		       "Unable to register rate control algorithm: %d\n", ret);
7793 7794 7795
		return ret;
	}

C
Christoph Hellwig 已提交
7796
	ret = pci_register_driver(&iwl3945_driver);
Z
Zhu Yi 已提交
7797
	if (ret) {
7798
		printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
7799
		goto error_register;
Z
Zhu Yi 已提交
7800 7801 7802
	}

	return ret;
7803 7804 7805 7806

error_register:
	iwl3945_rate_control_unregister();
	return ret;
Z
Zhu Yi 已提交
7807 7808
}

C
Christoph Hellwig 已提交
7809
static void __exit iwl3945_exit(void)
Z
Zhu Yi 已提交
7810
{
C
Christoph Hellwig 已提交
7811
	pci_unregister_driver(&iwl3945_driver);
7812
	iwl3945_rate_control_unregister();
Z
Zhu Yi 已提交
7813 7814
}

7815
MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
7816

7817
module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
Z
Zhu Yi 已提交
7818
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
7819
module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
Z
Zhu Yi 已提交
7820
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
7821
module_param_named(hwcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
Z
Zhu Yi 已提交
7822 7823
MODULE_PARM_DESC(hwcrypto,
		 "using hardware crypto engine (default 0 [software])\n");
7824
module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
Z
Zhu Yi 已提交
7825
MODULE_PARM_DESC(debug, "debug output mask");
7826
module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
Z
Zhu Yi 已提交
7827 7828
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");

7829
module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
Z
Zhu Yi 已提交
7830 7831
MODULE_PARM_DESC(queues_num, "number of hw queues.");

C
Christoph Hellwig 已提交
7832 7833
module_exit(iwl3945_exit);
module_init(iwl3945_init);