iwl3945-base.c 232.9 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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#include "iwl-3945-core.h"
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#include "iwl-commands.h"
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#include "iwl-3945.h"
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#include "iwl-3945-fh.h"
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#include "iwl-helpers.h"

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static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
				  struct iwl3945_tx_queue *txq);
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/******************************************************************************
 *
 * module boiler plate
 *
 ******************************************************************************/

/* module parameters */
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static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
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static u32 iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
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static int iwl3945_param_disable;  /* def: 0 = enable radio */
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static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
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int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
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int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
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/*
 * module name, copyright, version, etc.
 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
 */

#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 IWLWIFI_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     IWLWIFI_VERSION


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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static const struct ieee80211_supported_band *iwl3945_get_band(
		struct iwl3945_priv *priv, enum ieee80211_band band)
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{
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	return priv->hw->wiphy->bands[band];
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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_queue_space(const struct iwl3945_queue *q)
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{
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	int s = q->read_ptr - q->write_ptr;
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	if (q->read_ptr > q->write_ptr)
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		s -= q->n_bd;

	if (s <= 0)
		s += q->n_window;
	/* keep some reserve to not confuse empty and full situations */
	s -= 2;
	if (s < 0)
		s = 0;
	return s;
}

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int iwl3945_x2_queue_used(const struct iwl3945_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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static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
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{
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	/* This is for scan command, the big buffer at end of command array */
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	if (is_huge)
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		return q->n_window;	/* must be power of 2 */
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	/* Otherwise, use normal size buffers */
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	return index & (q->n_window - 1);
}

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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 iwl3945_priv *priv, struct iwl3945_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 iwl3945_priv *priv,
			      struct iwl3945_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_ERROR("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->bd = pci_alloc_consistent(dev,
			sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
			&txq->q.dma_addr);

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

	return 0;

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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 iwl3945_priv *priv,
		      struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
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{
	struct pci_dev *dev = priv->pci_dev;
	int len;
	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 iwl3945_cmd) * slots_num;
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	if (txq_id == IWL_CMD_QUEUE_NUM)
		len +=  IWL_MAX_SCAN_SIZE;
	txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
	if (!txq->cmd)
		return -ENOMEM;

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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) {
		pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);

		return -ENOMEM;
	}
	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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 * 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 iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
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{
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	struct iwl3945_queue *q = &txq->q;
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	struct pci_dev *dev = priv->pci_dev;
	int len;

	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 iwl3945_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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	pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);

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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_frame) *
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				    txq->q.n_bd, txq->bd, 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));
}

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const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
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/*************** 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 iwl3945_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))
		index = priv->hw_setting.bcast_sta_id;
	else
		for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
			if (priv->stations[i].used &&
			    !compare_ether_addr(priv->stations[i].sta.sta.addr,
						addr)) {
				index = i;
				break;
			}

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

	if (priv->stations[index].used) {
		priv->stations[index].used = 0;
		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 iwl3945_priv *priv)
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{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);

	priv->num_stations = 0;
	memset(priv->stations, 0, sizeof(priv->stations));

	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 iwl3945_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))
		index = priv->hw_setting.bcast_sta_id;
	else
		for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
			if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
						addr)) {
				index = i;
				break;
			}

			if (!priv->stations[i].used &&
			    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;
	}

	if (priv->stations[index].used &&
	   !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
		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[index];
	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;

}

/*************** DRIVER STATUS FUNCTIONS   *****/

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static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
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{
	/* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
	 * set but EXIT_PENDING is not */
	return test_bit(STATUS_READY, &priv->status) &&
	       test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
	       !test_bit(STATUS_EXIT_PENDING, &priv->status);
}

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static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
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{
	return test_bit(STATUS_ALIVE, &priv->status);
}

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static inline int iwl3945_is_init(struct iwl3945_priv *priv)
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{
	return test_bit(STATUS_INIT, &priv->status);
}

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static inline int iwl3945_is_rfkill_sw(struct iwl3945_priv *priv)
{
	return test_bit(STATUS_RF_KILL_SW, &priv->status);
}

static inline int iwl3945_is_rfkill_hw(struct iwl3945_priv *priv)
{
	return test_bit(STATUS_RF_KILL_HW, &priv->status);
}

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static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
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{
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	return iwl3945_is_rfkill_hw(priv) ||
		iwl3945_is_rfkill_sw(priv);
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}

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static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
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{

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	if (iwl3945_is_rfkill(priv))
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		return 0;

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	return iwl3945_is_ready(priv);
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}

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

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#define IWL_CMD(x) case x: return #x
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static const char *get_cmd_string(u8 cmd)
{
	switch (cmd) {
		IWL_CMD(REPLY_ALIVE);
		IWL_CMD(REPLY_ERROR);
		IWL_CMD(REPLY_RXON);
		IWL_CMD(REPLY_RXON_ASSOC);
		IWL_CMD(REPLY_QOS_PARAM);
		IWL_CMD(REPLY_RXON_TIMING);
		IWL_CMD(REPLY_ADD_STA);
		IWL_CMD(REPLY_REMOVE_STA);
		IWL_CMD(REPLY_REMOVE_ALL_STA);
		IWL_CMD(REPLY_3945_RX);
		IWL_CMD(REPLY_TX);
		IWL_CMD(REPLY_RATE_SCALE);
		IWL_CMD(REPLY_LEDS_CMD);
		IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
		IWL_CMD(RADAR_NOTIFICATION);
		IWL_CMD(REPLY_QUIET_CMD);
		IWL_CMD(REPLY_CHANNEL_SWITCH);
		IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
		IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
		IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
		IWL_CMD(POWER_TABLE_CMD);
		IWL_CMD(PM_SLEEP_NOTIFICATION);
		IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
		IWL_CMD(REPLY_SCAN_CMD);
		IWL_CMD(REPLY_SCAN_ABORT_CMD);
		IWL_CMD(SCAN_START_NOTIFICATION);
		IWL_CMD(SCAN_RESULTS_NOTIFICATION);
		IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
		IWL_CMD(BEACON_NOTIFICATION);
		IWL_CMD(REPLY_TX_BEACON);
		IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
		IWL_CMD(QUIET_NOTIFICATION);
		IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
		IWL_CMD(MEASURE_ABORT_NOTIFICATION);
		IWL_CMD(REPLY_BT_CONFIG);
		IWL_CMD(REPLY_STATISTICS_CMD);
		IWL_CMD(STATISTICS_NOTIFICATION);
		IWL_CMD(REPLY_CARD_STATE_CMD);
		IWL_CMD(CARD_STATE_NOTIFICATION);
		IWL_CMD(MISSED_BEACONS_NOTIFICATION);
	default:
		return "UNKNOWN";

	}
}

#define HOST_COMPLETE_TIMEOUT (HZ / 2)

/**
C
Christoph Hellwig 已提交
572
 * iwl3945_enqueue_hcmd - enqueue a uCode command
Z
Zhu Yi 已提交
573 574 575 576 577 578 579
 * @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.
 */
C
Christoph Hellwig 已提交
580
static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
581
{
C
Christoph Hellwig 已提交
582 583 584
	struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
	struct iwl3945_queue *q = &txq->q;
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
585
	u32 *control_flags;
C
Christoph Hellwig 已提交
586
	struct iwl3945_cmd *out_cmd;
Z
Zhu Yi 已提交
587 588 589 590 591 592 593 594 595 596 597 598 599 600
	u32 idx;
	u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
	dma_addr_t phys_addr;
	int pad;
	u16 count;
	int ret;
	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 */
	BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
	       !(cmd->meta.flags & CMD_SIZE_HUGE));

601 602 603 604 605 606

	if (iwl3945_is_rfkill(priv)) {
		IWL_DEBUG_INFO("Not sending command - RF KILL");
		return -EIO;
	}

C
Christoph Hellwig 已提交
607
	if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
Z
Zhu Yi 已提交
608 609 610 611 612 613
		IWL_ERROR("No space for Tx\n");
		return -ENOSPC;
	}

	spin_lock_irqsave(&priv->hcmd_lock, flags);

614
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
615 616 617 618
	memset(tfd, 0, sizeof(*tfd));

	control_flags = (u32 *) tfd;

619
	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
Z
Zhu Yi 已提交
620 621 622 623 624 625 626 627 628 629 630
	out_cmd = &txq->cmd[idx];

	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) |
631
			INDEX_TO_SEQ(q->write_ptr));
Z
Zhu Yi 已提交
632
	if (out_cmd->meta.flags & CMD_SIZE_HUGE)
633
		out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
Z
Zhu Yi 已提交
634 635

	phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
C
Christoph Hellwig 已提交
636 637
			offsetof(struct iwl3945_cmd, hdr);
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
Z
Zhu Yi 已提交
638 639 640 641 642 643 644 645 646

	pad = U32_PAD(cmd->len);
	count = TFD_CTL_COUNT_GET(*control_flags);
	*control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);

	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),
647
		     fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Z
Zhu Yi 已提交
648 649

	txq->need_update = 1;
650 651

	/* Increment and update queue's write index */
T
Tomas Winkler 已提交
652
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
653
	ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
654 655 656 657 658

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

C
Christoph Hellwig 已提交
659
static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
660 661 662 663 664 665 666 667 668 669 670 671 672 673
{
	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
674
	ret = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
675
	if (ret < 0) {
C
Christoph Hellwig 已提交
676
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
677 678 679 680 681 682
			  get_cmd_string(cmd->id), ret);
		return ret;
	}
	return 0;
}

C
Christoph Hellwig 已提交
683
static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
684 685 686 687 688 689 690 691 692
{
	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);

693
	if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
Z
Zhu Yi 已提交
694 695
		IWL_ERROR("Error sending %s: Already sending a host command\n",
			  get_cmd_string(cmd->id));
696 697
		ret = -EBUSY;
		goto out;
Z
Zhu Yi 已提交
698 699 700 701 702 703 704
	}

	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
705
	cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
706 707
	if (cmd_idx < 0) {
		ret = cmd_idx;
C
Christoph Hellwig 已提交
708
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743
			  get_cmd_string(cmd->id), ret);
		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)) {
			IWL_ERROR("Error sending %s: time out after %dms.\n",
				  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) {
		IWL_ERROR("Error: Response NULL in '%s'\n",
			  get_cmd_string(cmd->id));
		ret = -EIO;
744
		goto cancel;
Z
Zhu Yi 已提交
745 746 747 748 749 750 751
	}

	ret = 0;
	goto out;

cancel:
	if (cmd->meta.flags & CMD_WANT_SKB) {
C
Christoph Hellwig 已提交
752
		struct iwl3945_cmd *qcmd;
Z
Zhu Yi 已提交
753 754 755 756 757 758 759 760 761 762 763 764 765 766

		/* 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). */
		qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
		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:
767
	clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
Z
Zhu Yi 已提交
768 769 770
	return ret;
}

C
Christoph Hellwig 已提交
771
int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
772 773
{
	if (cmd->meta.flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
774
		return iwl3945_send_cmd_async(priv, cmd);
Z
Zhu Yi 已提交
775

C
Christoph Hellwig 已提交
776
	return iwl3945_send_cmd_sync(priv, cmd);
Z
Zhu Yi 已提交
777 778
}

C
Christoph Hellwig 已提交
779
int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
Z
Zhu Yi 已提交
780
{
C
Christoph Hellwig 已提交
781
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
782 783 784 785 786
		.id = id,
		.len = len,
		.data = data,
	};

C
Christoph Hellwig 已提交
787
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
788 789
}

C
Christoph Hellwig 已提交
790
static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
Z
Zhu Yi 已提交
791
{
C
Christoph Hellwig 已提交
792
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
793 794 795 796 797
		.id = id,
		.len = sizeof(val),
		.data = &val,
	};

C
Christoph Hellwig 已提交
798
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
799 800
}

C
Christoph Hellwig 已提交
801
int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
802
{
C
Christoph Hellwig 已提交
803
	return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Z
Zhu Yi 已提交
804 805 806
}

/**
C
Christoph Hellwig 已提交
807
 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
808 809
 * @band: 2.4 or 5 GHz band
 * @channel: Any channel valid for the requested band
Z
Zhu Yi 已提交
810

811
 * In addition to setting the staging RXON, priv->band is also set.
Z
Zhu Yi 已提交
812 813
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
814
 * in the staging RXON flag structure based on the band
Z
Zhu Yi 已提交
815
 */
816 817 818
static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
				    enum ieee80211_band band,
				    u16 channel)
Z
Zhu Yi 已提交
819
{
820
	if (!iwl3945_get_channel_info(priv, band, channel)) {
Z
Zhu Yi 已提交
821
		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
822
			       channel, band);
Z
Zhu Yi 已提交
823 824 825 826
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
827
	    (priv->band == band))
Z
Zhu Yi 已提交
828 829 830
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
831
	if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
832 833 834 835
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

836
	priv->band = band;
Z
Zhu Yi 已提交
837

838
	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Z
Zhu Yi 已提交
839 840 841 842 843

	return 0;
}

/**
C
Christoph Hellwig 已提交
844
 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Z
Zhu Yi 已提交
845 846 847 848 849
 *
 * 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
 */
C
Christoph Hellwig 已提交
850
static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
{
	int error = 0;
	int counter = 1;

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

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

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

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

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

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

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

	if (error) {
C
Christoph Hellwig 已提交
916
		IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
Z
Zhu Yi 已提交
917 918 919 920 921 922
		return -1;
	}
	return 0;
}

/**
923
 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
924
 * @priv: staging_rxon is compared to active_rxon
Z
Zhu Yi 已提交
925
 *
926 927 928
 * 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
929
 */
C
Christoph Hellwig 已提交
930
static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
931 932 933
{

	/* These items are only settable from the full RXON command */
934
	if (!(iwl3945_is_associated(priv)) ||
Z
Zhu Yi 已提交
935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964
	    compare_ether_addr(priv->staging_rxon.bssid_addr,
			       priv->active_rxon.bssid_addr) ||
	    compare_ether_addr(priv->staging_rxon.node_addr,
			       priv->active_rxon.node_addr) ||
	    compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
			       priv->active_rxon.wlap_bssid_addr) ||
	    (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
	    (priv->staging_rxon.channel != priv->active_rxon.channel) ||
	    (priv->staging_rxon.air_propagation !=
	     priv->active_rxon.air_propagation) ||
	    (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
		return 1;

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

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

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

	return 0;
}

C
Christoph Hellwig 已提交
965
static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
966 967
{
	int rc = 0;
968
	struct iwl_rx_packet *res = NULL;
C
Christoph Hellwig 已提交
969 970
	struct iwl3945_rxon_assoc_cmd rxon_assoc;
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
971 972 973 974 975
		.id = REPLY_RXON_ASSOC,
		.len = sizeof(rxon_assoc),
		.meta.flags = CMD_WANT_SKB,
		.data = &rxon_assoc,
	};
C
Christoph Hellwig 已提交
976 977
	const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
	const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
Z
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	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;
	}

	rxon_assoc.flags = priv->staging_rxon.flags;
	rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
	rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
	rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
	rxon_assoc.reserved = 0;

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	rc = iwl3945_send_cmd_sync(priv, &cmd);
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	if (rc)
		return rc;

997
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
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	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
		rc = -EIO;
	}

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

	return rc;
}

/**
C
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 * iwl3945_commit_rxon - commit staging_rxon to hardware
Z
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 *
1012
 * The RXON command in staging_rxon is committed to the hardware and
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 * 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.
 */
C
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static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
Z
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{
	/* cast away the const for active_rxon in this function */
C
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	struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
Z
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	int rc = 0;

C
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	if (!iwl3945_is_alive(priv))
Z
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		return -1;

	/* always get timestamp with Rx frame */
	priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;

	/* select antenna */
	priv->staging_rxon.flags &=
	    ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
	priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);

C
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	rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
Z
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	if (rc) {
		IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
		return -EINVAL;
	}

	/* If we don't need to send a full RXON, we can use
C
Christoph Hellwig 已提交
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	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
Z
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	 * and other flags for the current radio configuration. */
C
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1043 1044
	if (!iwl3945_full_rxon_required(priv)) {
		rc = iwl3945_send_rxon_assoc(priv);
Z
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		if (rc) {
			IWL_ERROR("Error setting RXON_ASSOC "
				  "configuration (%d).\n", rc);
			return rc;
		}

		memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));

		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
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	if (iwl3945_is_associated(priv) &&
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	    (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
		IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;

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		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
				      sizeof(struct iwl3945_rxon_cmd),
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				      &priv->active_rxon);

		/* 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;
			IWL_ERROR("Error clearing ASSOC_MSK on current "
				  "configuration (%d).\n", rc);
			return rc;
		}
	}

	IWL_DEBUG_INFO("Sending RXON\n"
		       "* with%s RXON_FILTER_ASSOC_MSK\n"
		       "* channel = %d\n"
J
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		       "* bssid = %pM\n",
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		       ((priv->staging_rxon.filter_flags &
			 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
		       le16_to_cpu(priv->staging_rxon.channel),
J
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		       priv->staging_rxon.bssid_addr);
Z
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	/* Apply the new configuration */
C
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	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
			      sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
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	if (rc) {
		IWL_ERROR("Error setting new configuration (%d).\n", rc);
		return rc;
	}

	memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));

C
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	iwl3945_clear_stations_table(priv);
1099

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	/* 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
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	rc = iwl3945_hw_reg_send_txpower(priv);
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	if (rc) {
		IWL_ERROR("Error setting Tx power (%d).\n", rc);
		return rc;
	}

	/* Add the broadcast address so we can send broadcast frames */
C
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	if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
Z
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	    IWL_INVALID_STATION) {
		IWL_ERROR("Error adding BROADCAST address for transmit.\n");
		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
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	if (iwl3945_is_associated(priv) &&
1118
	    (priv->iw_mode == NL80211_IFTYPE_STATION))
C
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		if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
Z
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		    == IWL_INVALID_STATION) {
			IWL_ERROR("Error adding AP address for transmit.\n");
			return -EIO;
		}

1125
	/* Init the hardware's rate fallback order based on the band */
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	rc = iwl3945_init_hw_rate_table(priv);
	if (rc) {
		IWL_ERROR("Error setting HW rate table: %02X\n", rc);
		return -EIO;
	}

	return 0;
}

C
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static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
Z
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1136
{
1137
	struct iwl_bt_cmd bt_cmd = {
Z
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		.flags = 3,
		.lead_time = 0xAA,
		.max_kill = 1,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

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Christoph Hellwig 已提交
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	return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1146
					sizeof(bt_cmd), &bt_cmd);
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}

C
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1149
static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
Z
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1150 1151
{
	int rc = 0;
1152
	struct iwl_rx_packet *res;
C
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1153
	struct iwl3945_host_cmd cmd = {
Z
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1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165
		.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;
	}

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	rc = iwl3945_send_cmd_sync(priv, &cmd);
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	if (rc) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return rc;
	}

1172
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
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	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;
}

C
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static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
					struct iwl3945_cmd *cmd,
Z
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1192 1193 1194 1195 1196 1197 1198 1199
					struct sk_buff *skb)
{
	return 1;
}

/*
 * CARD_STATE_CMD
 *
1200
 * Use: Sets the device's internal card state to enable, disable, or halt
Z
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1201 1202 1203 1204 1205 1206
 *
 * When in the 'enable' state the card operates as normal.
 * When in the 'disable' state, the card enters into a low power mode.
 * When in the 'halt' state, the card is shut down and must be fully
 * restarted to come back on.
 */
C
Christoph Hellwig 已提交
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static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
Z
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1208
{
C
Christoph Hellwig 已提交
1209
	struct iwl3945_host_cmd cmd = {
Z
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		.id = REPLY_CARD_STATE_CMD,
		.len = sizeof(u32),
		.data = &flags,
		.meta.flags = meta_flag,
	};

	if (meta_flag & CMD_ASYNC)
C
Christoph Hellwig 已提交
1217
		cmd.meta.u.callback = iwl3945_card_state_sync_callback;
Z
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1218

C
Christoph Hellwig 已提交
1219
	return iwl3945_send_cmd(priv, &cmd);
Z
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}

C
Christoph Hellwig 已提交
1222 1223
static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
				     struct iwl3945_cmd *cmd, struct sk_buff *skb)
Z
Zhu Yi 已提交
1224
{
1225
	struct iwl_rx_packet *res = NULL;
Z
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1226 1227 1228 1229 1230 1231

	if (!skb) {
		IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
		return 1;
	}

1232
	res = (struct iwl_rx_packet *)skb->data;
Z
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	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
			  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;
}

C
Christoph Hellwig 已提交
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int iwl3945_send_add_station(struct iwl3945_priv *priv,
			 struct iwl3945_addsta_cmd *sta, u8 flags)
Z
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1252
{
1253
	struct iwl_rx_packet *res = NULL;
Z
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1254
	int rc = 0;
C
Christoph Hellwig 已提交
1255
	struct iwl3945_host_cmd cmd = {
Z
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1256
		.id = REPLY_ADD_STA,
C
Christoph Hellwig 已提交
1257
		.len = sizeof(struct iwl3945_addsta_cmd),
Z
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		.meta.flags = flags,
		.data = sta,
	};

	if (flags & CMD_ASYNC)
C
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1263
		cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Z
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1264 1265 1266
	else
		cmd.meta.flags |= CMD_WANT_SKB;

C
Christoph Hellwig 已提交
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	rc = iwl3945_send_cmd(priv, &cmd);
Z
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1268 1269 1270 1271

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

1272
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
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	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
			  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;
			IWL_WARNING("REPLY_ADD_STA failed\n");
			break;
		}
	}

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

	return rc;
}

C
Christoph Hellwig 已提交
1297
static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
Z
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1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
				   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);
	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
	priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
	memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
	       keyconf->keylen);

	memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
	       keyconf->keylen);
	priv->stations[sta_id].sta.key.key_flags = key_flags;
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;

	spin_unlock_irqrestore(&priv->sta_lock, flags);

	IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
C
Christoph Hellwig 已提交
1331
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1332 1333 1334
	return 0;
}

C
Christoph Hellwig 已提交
1335
static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
Z
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1336 1337 1338 1339
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
C
Christoph Hellwig 已提交
1340
	memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1341 1342
	memset(&priv->stations[sta_id].sta.key, 0,
		sizeof(struct iwl4965_keyinfo));
Z
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1343 1344 1345 1346 1347 1348
	priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
C
Christoph Hellwig 已提交
1349
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1350 1351 1352
	return 0;
}

C
Christoph Hellwig 已提交
1353
static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
Z
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1354 1355 1356 1357 1358 1359 1360 1361 1362
{
	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
1363
		kfree(list_entry(element, struct iwl3945_frame, list));
Z
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1364 1365 1366 1367 1368 1369 1370 1371 1372 1373
		priv->frames_count--;
	}

	if (priv->frames_count) {
		IWL_WARNING("%d frames still in use.  Did we lose one?\n",
			    priv->frames_count);
		priv->frames_count = 0;
	}
}

C
Christoph Hellwig 已提交
1374
static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1375
{
C
Christoph Hellwig 已提交
1376
	struct iwl3945_frame *frame;
Z
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1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
	struct list_head *element;
	if (list_empty(&priv->free_frames)) {
		frame = kzalloc(sizeof(*frame), GFP_KERNEL);
		if (!frame) {
			IWL_ERROR("Could not allocate frame!\n");
			return NULL;
		}

		priv->frames_count++;
		return frame;
	}

	element = priv->free_frames.next;
	list_del(element);
C
Christoph Hellwig 已提交
1391
	return list_entry(element, struct iwl3945_frame, list);
Z
Zhu Yi 已提交
1392 1393
}

C
Christoph Hellwig 已提交
1394
static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
Z
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1395 1396 1397 1398 1399
{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

C
Christoph Hellwig 已提交
1400
unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1401
				struct ieee80211_hdr *hdr,
1402
				int left)
Z
Zhu Yi 已提交
1403 1404
{

C
Christoph Hellwig 已提交
1405
	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1406 1407
	    ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
	     (priv->iw_mode != NL80211_IFTYPE_AP)))
Z
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1408 1409 1410 1411 1412 1413 1414 1415 1416 1417
		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;
}

1418
static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1419 1420
{
	u8 i;
1421 1422 1423 1424
	int rate_mask;

	/* Set rate mask*/
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1425
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1426
	else
1427
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
Z
Zhu Yi 已提交
1428 1429

	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
C
Christoph Hellwig 已提交
1430
	     i = iwl3945_rates[i].next_ieee) {
Z
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1431
		if (rate_mask & (1 << i))
C
Christoph Hellwig 已提交
1432
			return iwl3945_rates[i].plcp;
Z
Zhu Yi 已提交
1433 1434
	}

1435 1436 1437 1438 1439
	/* No valid rate was found. Assign the lowest one */
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
		return IWL_RATE_1M_PLCP;
	else
		return IWL_RATE_6M_PLCP;
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}

C
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static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
Z
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1443
{
C
Christoph Hellwig 已提交
1444
	struct iwl3945_frame *frame;
Z
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1445 1446 1447 1448
	unsigned int frame_size;
	int rc;
	u8 rate;

C
Christoph Hellwig 已提交
1449
	frame = iwl3945_get_free_frame(priv);
Z
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	if (!frame) {
		IWL_ERROR("Could not obtain free frame buffer for beacon "
			  "command.\n");
		return -ENOMEM;
	}

1457
	rate = iwl3945_rate_get_lowest_plcp(priv);
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C
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	frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Z
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C
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1461
	rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Z
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			      &frame->u.cmd[0]);

C
Christoph Hellwig 已提交
1464
	iwl3945_free_frame(priv, frame);
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	return rc;
}

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

C
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static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
Z
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{
	memcpy(mac, priv->eeprom.mac_address, 6);
}

1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
/*
 * 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!).
 */
static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
{
	_iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
	return 0;
}

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/**
C
Christoph Hellwig 已提交
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 * iwl3945_eeprom_init - read EEPROM contents
Z
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1496
 *
1497
 * Load the EEPROM contents from adapter into priv->eeprom
Z
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 *
 * NOTE:  This routine uses the non-debug IO access functions.
 */
C
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int iwl3945_eeprom_init(struct iwl3945_priv *priv)
Z
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{
1503
	u16 *e = (u16 *)&priv->eeprom;
C
Christoph Hellwig 已提交
1504
	u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
Z
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	int sz = sizeof(priv->eeprom);
1506
	int ret;
Z
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	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. */
	BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);

	if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
J
Jiri Slaby 已提交
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		IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
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		return -ENOENT;
	}

1520
	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
1521 1522
	ret = iwl3945_eeprom_acquire_semaphore(priv);
	if (ret < 0) {
1523
		IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
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		return -ENOENT;
	}

	/* eeprom is an array of 16bit values */
	for (addr = 0; addr < sz; addr += sizeof(u16)) {
1529
		u32 r;
Z
Zhu Yi 已提交
1530

1531 1532 1533 1534 1535 1536 1537
		_iwl3945_write32(priv, CSR_EEPROM_REG,
				 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
		_iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
		ret = iwl3945_poll_direct_bit(priv, CSR_EEPROM_REG,
					      CSR_EEPROM_REG_READ_VALID_MSK,
					      IWL_EEPROM_ACCESS_TIMEOUT);
		if (ret < 0) {
J
Jiri Slaby 已提交
1538
			IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1539
			return ret;
Z
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1540
		}
1541 1542

		r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1543
		e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
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	}

	return 0;
}

C
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1549
static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
Z
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1550 1551 1552
{
	if (priv->hw_setting.shared_virt)
		pci_free_consistent(priv->pci_dev,
C
Christoph Hellwig 已提交
1553
				    sizeof(struct iwl3945_shared),
Z
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1554 1555 1556 1557 1558
				    priv->hw_setting.shared_virt,
				    priv->hw_setting.shared_phys);
}

/**
C
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1559
 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Z
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 *
 * return : set the bit for each supported rate insert in ie
 */
C
Christoph Hellwig 已提交
1563
static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1564
				    u16 basic_rate, int *left)
Z
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{
	u16 ret_rates = 0, bit;
	int i;
1568 1569
	u8 *cnt = ie;
	u8 *rates = ie + 1;
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	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
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			rates[*cnt] = iwl3945_rates[i].ieee |
1575 1576 1577 1578 1579
				((bit & basic_rate) ? 0x80 : 0x00);
			(*cnt)++;
			(*left)--;
			if ((*left <= 0) ||
			    (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
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				break;
		}
	}

	return ret_rates;
}

/**
C
Christoph Hellwig 已提交
1588
 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Z
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 */
C
Christoph Hellwig 已提交
1590
static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
Z
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1591
			      struct ieee80211_mgmt *frame,
J
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1592
			      int left)
Z
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1593 1594 1595
{
	int len = 0;
	u8 *pos = NULL;
1596
	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);
C
Christoph Hellwig 已提交
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	memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
Z
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	memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
C
Christoph Hellwig 已提交
1608
	memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
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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;
1627

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1628 1629 1630
	/* ... fill it in... */
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos = 0;
1631 1632 1633

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

1636
	cck_rates = IWL_CCK_RATES_MASK & active_rates;
C
Christoph Hellwig 已提交
1637
	ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1638 1639 1640
			priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

C
Christoph Hellwig 已提交
1641
	ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1642 1643 1644
				 priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

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	len += 2 + *pos;
	pos += (*pos) + 1;
1647
	if (active_rates == 0)
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		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
1658
	iwl3945_supported_rate_to_ie(pos, active_rates,
1659
				 priv->active_rate_basic, &left);
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1660 1661 1662 1663 1664 1665 1666 1667 1668 1669
	if (*pos > 0)
		len += 2 + *pos;

 fill_end:
	return (u16)len;
}

/*
 * QoS  support
*/
C
Christoph Hellwig 已提交
1670
static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1671
				       struct iwl_qosparam_cmd *qos)
Z
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1672 1673
{

C
Christoph Hellwig 已提交
1674
	return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1675
				sizeof(struct iwl_qosparam_cmd), qos);
Z
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}

C
Christoph Hellwig 已提交
1678
static void iwl3945_reset_qos(struct iwl3945_priv *priv)
Z
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1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689
{
	u16 cw_min = 15;
	u16 cw_max = 1023;
	u8 aifs = 2;
	u8 is_legacy = 0;
	unsigned long flags;
	int i;

	spin_lock_irqsave(&priv->lock, flags);
	priv->qos_data.qos_active = 0;

1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704
	/* QoS always active in AP and ADHOC mode
	 * In STA mode wait for association
	 */
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
	    priv->iw_mode == NL80211_IFTYPE_AP)
		priv->qos_data.qos_active = 1;
	else
		priv->qos_data.qos_active = 0;


	/* check for legacy mode */
	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
	     (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
	    (priv->iw_mode == NL80211_IFTYPE_STATION &&
	     (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
Z
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1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
		cw_min = 31;
		is_legacy = 1;
	}

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

	priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
	priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
	priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
	priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
	priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;

	if (priv->qos_data.qos_active) {
		i = 1;
		priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
		priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
		priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

		i = 2;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16(cw_max);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(6016);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3008);
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;

		i = 3;
		priv->qos_data.def_qos_parm.ac[i].cw_min =
			cpu_to_le16((cw_min + 1) / 4 - 1);
		priv->qos_data.def_qos_parm.ac[i].cw_max =
			cpu_to_le16((cw_max + 1) / 2 - 1);
		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		if (is_legacy)
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(3264);
		else
			priv->qos_data.def_qos_parm.ac[i].edca_txop =
				cpu_to_le16(1504);
	} else {
		for (i = 1; i < 4; i++) {
			priv->qos_data.def_qos_parm.ac[i].cw_min =
				cpu_to_le16(cw_min);
			priv->qos_data.def_qos_parm.ac[i].cw_max =
				cpu_to_le16(cw_max);
			priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
			priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
			priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
		}
	}
	IWL_DEBUG_QOS("set QoS to default \n");

	spin_unlock_irqrestore(&priv->lock, flags);
}

C
Christoph Hellwig 已提交
1769
static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
Z
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1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
{
	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
1790
	if (force || iwl3945_is_associated(priv)) {
T
Tomas Winkler 已提交
1791
		IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
Z
Zhu Yi 已提交
1792 1793
			      priv->qos_data.qos_active);

C
Christoph Hellwig 已提交
1794
		iwl3945_send_qos_params_command(priv,
Z
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1795 1796 1797 1798 1799 1800 1801 1802 1803
				&(priv->qos_data.def_qos_parm));
	}
}

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

1804 1805 1806

#define NOSLP __constant_cpu_to_le16(0), 0, 0
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
Z
Zhu Yi 已提交
1807 1808 1809 1810 1811 1812 1813 1814
#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
Tomas Winkler 已提交
1815
/* for TIM  0-10 */
C
Christoph Hellwig 已提交
1816
static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1817 1818 1819 1820 1821 1822 1823 1824
	{{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
1825
/* for TIM > 10 */
C
Christoph Hellwig 已提交
1826
static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838
	{{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}
};

C
Christoph Hellwig 已提交
1839
int iwl3945_power_init_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1840 1841
{
	int rc = 0, i;
C
Christoph Hellwig 已提交
1842 1843
	struct iwl3945_power_mgr *pow_data;
	int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
Z
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1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861
	u16 pci_pm;

	IWL_DEBUG_POWER("Initialize power \n");

	pow_data = &(priv->power_data);

	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 {
1862
		struct iwl_powertable_cmd *cmd;
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		IWL_DEBUG_POWER("adjust power command flags\n");

		for (i = 0; i < IWL_POWER_AC; i++) {
			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;
}

C
Christoph Hellwig 已提交
1878
static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1879
				struct iwl_powertable_cmd *cmd, u32 mode)
Z
Zhu Yi 已提交
1880 1881 1882 1883
{
	int rc = 0, i;
	u8 skip;
	u32 max_sleep = 0;
C
Christoph Hellwig 已提交
1884
	struct iwl3945_power_vec_entry *range;
Z
Zhu Yi 已提交
1885
	u8 period = 0;
C
Christoph Hellwig 已提交
1886
	struct iwl3945_power_mgr *pow_data;
Z
Zhu Yi 已提交
1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898

	if (mode > IWL_POWER_INDEX_5) {
		IWL_DEBUG_POWER("Error invalid power mode \n");
		return -1;
	}
	pow_data = &(priv->power_data);

	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
1899
	memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
Z
Zhu Yi 已提交
1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941

#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;
}

C
Christoph Hellwig 已提交
1942
static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
Z
Zhu Yi 已提交
1943
{
1944
	u32 uninitialized_var(final_mode);
Z
Zhu Yi 已提交
1945
	int rc;
1946
	struct iwl_powertable_cmd cmd;
Z
Zhu Yi 已提交
1947 1948

	/* If on battery, set to 3,
1949
	 * if plugged into AC power, set to CAM ("continuously aware mode"),
Z
Zhu Yi 已提交
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962
	 * else user level */
	switch (mode) {
	case IWL_POWER_BATTERY:
		final_mode = IWL_POWER_INDEX_3;
		break;
	case IWL_POWER_AC:
		final_mode = IWL_POWER_MODE_CAM;
		break;
	default:
		final_mode = mode;
		break;
	}

C
Christoph Hellwig 已提交
1963
	iwl3945_update_power_cmd(priv, &cmd, final_mode);
Z
Zhu Yi 已提交
1964

1965 1966 1967
	/* 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);
Z
Zhu Yi 已提交
1968 1969 1970 1971 1972 1973 1974 1975 1976 1977

	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
1978
 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
1979 1980 1981
 *
 * NOTE: priv->mutex is not required before calling this function
 */
C
Christoph Hellwig 已提交
1982
static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
{
	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
2005
 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
2006 2007 2008 2009
 * @ms: amount of time to wait (in milliseconds) for scan to abort
 *
 * NOTE: priv->mutex must be held before calling this function
 */
C
Christoph Hellwig 已提交
2010
static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
Z
Zhu Yi 已提交
2011 2012 2013 2014
{
	unsigned long now = jiffies;
	int ret;

C
Christoph Hellwig 已提交
2015
	ret = iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
	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
2032
static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
Z
Zhu Yi 已提交
2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044
{
	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);
}

C
Christoph Hellwig 已提交
2045
static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2046 2047 2048 2049 2050 2051 2052 2053 2054 2055
{
	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);
2056
	priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
Z
Zhu Yi 已提交
2057 2058
	priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;

2059
	tsf = priv->timestamp;
Z
Zhu Yi 已提交
2060 2061 2062 2063

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

2064
	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Z
Zhu Yi 已提交
2065 2066 2067 2068 2069 2070 2071
		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
2072
			    iwl3945_adjust_beacon_interval(
Z
Zhu Yi 已提交
2073 2074 2075 2076 2077 2078
				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
2079
			iwl3945_adjust_beacon_interval(conf->beacon_int);
Z
Zhu Yi 已提交
2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097
		/* 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));
}

C
Christoph Hellwig 已提交
2098
static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2099
{
C
Christoph Hellwig 已提交
2100
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116
		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");
2117 2118 2119 2120
	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
Zhu Yi 已提交
2121 2122 2123 2124 2125 2126 2127 2128 2129
	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;
}

C
Christoph Hellwig 已提交
2130
static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
Z
Zhu Yi 已提交
2131
{
C
Christoph Hellwig 已提交
2132
	struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
Z
Zhu Yi 已提交
2133 2134 2135 2136 2137 2138 2139 2140 2141

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

	return 0;
}

2142 2143
static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
2144
{
2145
	if (band == IEEE80211_BAND_5GHZ) {
Z
Zhu Yi 已提交
2146 2147 2148 2149 2150
		priv->staging_rxon.flags &=
		    ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
		      | RXON_FLG_CCK_MSK);
		priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
	} else {
C
Christoph Hellwig 已提交
2151
		/* Copied from iwl3945_bg_post_associate() */
Z
Zhu Yi 已提交
2152 2153 2154 2155 2156
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

2157
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
2158 2159 2160 2161 2162 2163 2164 2165 2166
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
		priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
		priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
	}
}

/*
2167
 * initialize rxon structure with default values from eeprom
Z
Zhu Yi 已提交
2168
 */
2169 2170
static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
					      int mode)
Z
Zhu Yi 已提交
2171
{
C
Christoph Hellwig 已提交
2172
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2173 2174 2175

	memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));

2176
	switch (mode) {
2177
	case NL80211_IFTYPE_AP:
Z
Zhu Yi 已提交
2178 2179 2180
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
		break;

2181
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
2182 2183 2184 2185
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
		break;

2186
	case NL80211_IFTYPE_ADHOC:
Z
Zhu Yi 已提交
2187 2188 2189 2190 2191 2192
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
		priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
		priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
						  RXON_FILTER_ACCEPT_GRP_MSK;
		break;

2193
	case NL80211_IFTYPE_MONITOR:
Z
Zhu Yi 已提交
2194 2195 2196 2197
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
		priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
		    RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
		break;
2198
	default:
2199
		IWL_ERROR("Unsupported interface type %d\n", mode);
2200
		break;
Z
Zhu Yi 已提交
2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211
	}

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

2212
	ch_info = iwl3945_get_channel_info(priv, priv->band,
2213
				       le16_to_cpu(priv->active_rxon.channel));
Z
Zhu Yi 已提交
2214 2215 2216 2217 2218 2219 2220 2221

	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
	 */
2222
	if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
Z
Zhu Yi 已提交
2223 2224 2225 2226
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	if (is_channel_a_band(ch_info))
2227
		priv->band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
2228
	else
2229
		priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
2230

2231
	iwl3945_set_flags_for_phymode(priv, priv->band);
Z
Zhu Yi 已提交
2232 2233 2234 2235 2236 2237 2238

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

C
Christoph Hellwig 已提交
2239
static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
Z
Zhu Yi 已提交
2240
{
2241
	if (mode == NL80211_IFTYPE_ADHOC) {
C
Christoph Hellwig 已提交
2242
		const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2243

C
Christoph Hellwig 已提交
2244
		ch_info = iwl3945_get_channel_info(priv,
2245
			priv->band,
Z
Zhu Yi 已提交
2246 2247 2248 2249 2250 2251 2252 2253 2254
			le16_to_cpu(priv->staging_rxon.channel));

		if (!ch_info || !is_channel_ibss(ch_info)) {
			IWL_ERROR("channel %d not IBSS channel\n",
				  le16_to_cpu(priv->staging_rxon.channel));
			return -EINVAL;
		}
	}

2255
	iwl3945_connection_init_rx_config(priv, mode);
Z
Zhu Yi 已提交
2256 2257
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);

C
Christoph Hellwig 已提交
2258
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
2259

T
Tomas Winkler 已提交
2260
	/* don't commit rxon if rf-kill is on*/
2261 2262 2263 2264 2265 2266 2267 2268 2269 2270
	if (!iwl3945_is_ready_rf(priv))
		return -EAGAIN;

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

C
Christoph Hellwig 已提交
2271
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
2272 2273 2274 2275

	return 0;
}

C
Christoph Hellwig 已提交
2276
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2277
				      struct ieee80211_tx_info *info,
C
Christoph Hellwig 已提交
2278
				      struct iwl3945_cmd *cmd,
Z
Zhu Yi 已提交
2279 2280 2281
				      struct sk_buff *skb_frag,
				      int last_frag)
{
2282
	struct iwl3945_hw_key *keyinfo =
2283
	    &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
Z
Zhu Yi 已提交
2284 2285 2286 2287 2288

	switch (keyinfo->alg) {
	case ALG_CCMP:
		cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
		memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
T
Tomas Winkler 已提交
2289
		IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
Z
Zhu Yi 已提交
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305
		break;

	case ALG_TKIP:
#if 0
		cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;

		if (last_frag)
			memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
			       8);
		else
			memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
#endif
		break;

	case ALG_WEP:
		cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2306
		    (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
Z
Zhu Yi 已提交
2307 2308 2309 2310 2311 2312 2313

		if (keyinfo->keylen == 13)
			cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;

		memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);

		IWL_DEBUG_TX("Configuring packet for WEP encryption "
2314
			     "with key %d\n", info->control.hw_key->hw_key_idx);
Z
Zhu Yi 已提交
2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325
		break;

	default:
		printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
		break;
	}
}

/*
 * handle build REPLY_TX command notification.
 */
C
Christoph Hellwig 已提交
2326 2327
static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
				  struct iwl3945_cmd *cmd,
2328
				  struct ieee80211_tx_info *info,
Z
Zhu Yi 已提交
2329 2330 2331
				  struct ieee80211_hdr *hdr,
				  int is_unicast, u8 std_id)
{
2332
	__le16 fc = hdr->frame_control;
Z
Zhu Yi 已提交
2333
	__le32 tx_flags = cmd->cmd.tx.tx_flags;
2334
	u8 rc_flags = info->control.rates[0].flags;
Z
Zhu Yi 已提交
2335 2336

	cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2337
	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
Z
Zhu Yi 已提交
2338
		tx_flags |= TX_CMD_FLG_ACK_MSK;
2339
		if (ieee80211_is_mgmt(fc))
Z
Zhu Yi 已提交
2340
			tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2341
		if (ieee80211_is_probe_resp(fc) &&
Z
Zhu Yi 已提交
2342 2343 2344 2345 2346 2347 2348 2349
		    !(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;
	}

	cmd->cmd.tx.sta_id = std_id;
2350
	if (ieee80211_has_morefrags(fc))
Z
Zhu Yi 已提交
2351 2352
		tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;

2353 2354
	if (ieee80211_is_data_qos(fc)) {
		u8 *qc = ieee80211_get_qos_ctl(hdr);
2355
		cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
Z
Zhu Yi 已提交
2356
		tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2357
	} else {
Z
Zhu Yi 已提交
2358
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2359
	}
Z
Zhu Yi 已提交
2360

2361
	if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
Z
Zhu Yi 已提交
2362 2363
		tx_flags |= TX_CMD_FLG_RTS_MSK;
		tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2364
	} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
Z
Zhu Yi 已提交
2365 2366 2367 2368 2369 2370 2371 2372
		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);
2373 2374
	if (ieee80211_is_mgmt(fc)) {
		if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2375
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
Z
Zhu Yi 已提交
2376
		else
2377
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
M
Mohamed Abbas 已提交
2378
	} else {
Z
Zhu Yi 已提交
2379
		cmd->cmd.tx.timeout.pm_frame_timeout = 0;
M
Mohamed Abbas 已提交
2380 2381 2382 2383
#ifdef CONFIG_IWL3945_LEDS
		priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
#endif
	}
Z
Zhu Yi 已提交
2384 2385 2386 2387 2388 2389

	cmd->cmd.tx.driver_txop = 0;
	cmd->cmd.tx.tx_flags = tx_flags;
	cmd->cmd.tx.next_frame_len = 0;
}

2390 2391 2392
/**
 * iwl3945_get_sta_id - Find station's index within station table
 */
C
Christoph Hellwig 已提交
2393
static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
Z
Zhu Yi 已提交
2394 2395 2396 2397
{
	int sta_id;
	u16 fc = le16_to_cpu(hdr->frame_control);

2398
	/* If this frame is broadcast or management, use broadcast station id */
Z
Zhu Yi 已提交
2399 2400 2401 2402 2403 2404
	if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
	    is_multicast_ether_addr(hdr->addr1))
		return priv->hw_setting.bcast_sta_id;

	switch (priv->iw_mode) {

2405 2406
	/* If we are a client station in a BSS network, use the special
	 * AP station entry (that's the only station we communicate with) */
2407
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
2408 2409 2410
		return IWL_AP_ID;

	/* If we are an AP, then find the station, or use BCAST */
2411
	case NL80211_IFTYPE_AP:
C
Christoph Hellwig 已提交
2412
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2413 2414 2415 2416
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
		return priv->hw_setting.bcast_sta_id;

2417 2418
	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
2419
	case NL80211_IFTYPE_ADHOC: {
2420
		/* Create new station table entry */
C
Christoph Hellwig 已提交
2421
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2422 2423 2424
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

C
Christoph Hellwig 已提交
2425
		sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Z
Zhu Yi 已提交
2426 2427 2428 2429

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

J
Johannes Berg 已提交
2430
		IWL_DEBUG_DROP("Station %pM not in station map. "
Z
Zhu Yi 已提交
2431
			       "Defaulting to broadcast...\n",
J
Johannes Berg 已提交
2432
			       hdr->addr1);
2433
		iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Z
Zhu Yi 已提交
2434
		return priv->hw_setting.bcast_sta_id;
2435
	}
2436 2437
	/* If we are in monitor mode, use BCAST. This is required for
	 * packet injection. */
2438
	case NL80211_IFTYPE_MONITOR:
2439 2440
		return priv->hw_setting.bcast_sta_id;

Z
Zhu Yi 已提交
2441
	default:
J
Jiri Slaby 已提交
2442
		IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
Z
Zhu Yi 已提交
2443 2444 2445 2446 2447 2448 2449
		return priv->hw_setting.bcast_sta_id;
	}
}

/*
 * start REPLY_TX command process
 */
2450
static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
Z
Zhu Yi 已提交
2451 2452
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2453
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
C
Christoph Hellwig 已提交
2454
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
2455
	u32 *control_flags;
2456
	int txq_id = skb_get_queue_mapping(skb);
C
Christoph Hellwig 已提交
2457 2458
	struct iwl3945_tx_queue *txq = NULL;
	struct iwl3945_queue *q = NULL;
Z
Zhu Yi 已提交
2459 2460
	dma_addr_t phys_addr;
	dma_addr_t txcmd_phys;
C
Christoph Hellwig 已提交
2461
	struct iwl3945_cmd *out_cmd = NULL;
2462 2463 2464
	u16 len, idx, len_org, hdr_len;
	u8 id;
	u8 unicast;
Z
Zhu Yi 已提交
2465
	u8 sta_id;
2466
	u8 tid = 0;
Z
Zhu Yi 已提交
2467
	u16 seq_number = 0;
2468
	__le16 fc;
Z
Zhu Yi 已提交
2469
	u8 wait_write_ptr = 0;
2470
	u8 *qc = NULL;
Z
Zhu Yi 已提交
2471 2472 2473 2474
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2475
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
2476 2477 2478 2479
		IWL_DEBUG_DROP("Dropping - RF KILL\n");
		goto drop_unlock;
	}

2480
	if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
Z
Zhu Yi 已提交
2481 2482 2483 2484 2485 2486 2487
		IWL_ERROR("ERROR: No TX rate available.\n");
		goto drop_unlock;
	}

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

2488
	fc = hdr->frame_control;
Z
Zhu Yi 已提交
2489

2490
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
2491 2492
	if (ieee80211_is_auth(fc))
		IWL_DEBUG_TX("Sending AUTH frame\n");
2493
	else if (ieee80211_is_assoc_req(fc))
Z
Zhu Yi 已提交
2494
		IWL_DEBUG_TX("Sending ASSOC frame\n");
2495
	else if (ieee80211_is_reassoc_req(fc))
Z
Zhu Yi 已提交
2496 2497 2498
		IWL_DEBUG_TX("Sending REASSOC frame\n");
#endif

2499
	/* drop all data frame if we are not associated */
2500
	if (ieee80211_is_data(fc) &&
2501
	    (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2502
	    (!iwl3945_is_associated(priv) ||
2503
	     ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
C
Christoph Hellwig 已提交
2504
		IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
Z
Zhu Yi 已提交
2505 2506 2507 2508 2509
		goto drop_unlock;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

2510
	hdr_len = ieee80211_hdrlen(fc);
2511 2512

	/* Find (or create) index into station table for destination station */
C
Christoph Hellwig 已提交
2513
	sta_id = iwl3945_get_sta_id(priv, hdr);
Z
Zhu Yi 已提交
2514
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
2515 2516
		IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
			       hdr->addr1);
Z
Zhu Yi 已提交
2517 2518 2519 2520 2521
		goto drop;
	}

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

2522 2523
	if (ieee80211_is_data_qos(fc)) {
		qc = ieee80211_get_qos_ctl(hdr);
2524
		tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
Z
Zhu Yi 已提交
2525 2526 2527 2528 2529 2530 2531
		seq_number = priv->stations[sta_id].tid[tid].seq_number &
				IEEE80211_SCTL_SEQ;
		hdr->seq_ctrl = cpu_to_le16(seq_number) |
			(hdr->seq_ctrl &
				__constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
		seq_number += 0x10;
	}
2532 2533

	/* Descriptor for chosen Tx queue */
Z
Zhu Yi 已提交
2534 2535 2536 2537 2538
	txq = &priv->txq[txq_id];
	q = &txq->q;

	spin_lock_irqsave(&priv->lock, flags);

2539
	/* Set up first empty TFD within this queue's circular TFD buffer */
2540
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
2541 2542
	memset(tfd, 0, sizeof(*tfd));
	control_flags = (u32 *) tfd;
2543
	idx = get_cmd_index(q, q->write_ptr, 0);
Z
Zhu Yi 已提交
2544

2545
	/* Set up driver data for this TFD */
C
Christoph Hellwig 已提交
2546
	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2547
	txq->txb[q->write_ptr].skb[0] = skb;
2548 2549

	/* Init first empty entry in queue's array of Tx/cmd buffers */
Z
Zhu Yi 已提交
2550 2551 2552
	out_cmd = &txq->cmd[idx];
	memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
	memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2553 2554 2555 2556 2557 2558 2559

	/*
	 * 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
2560 2561
	out_cmd->hdr.cmd = REPLY_TX;
	out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2562
				INDEX_TO_SEQ(q->write_ptr)));
2563 2564

	/* Copy MAC header from skb into command buffer */
Z
Zhu Yi 已提交
2565 2566
	memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);

2567 2568 2569 2570 2571 2572 2573 2574 2575
	/*
	 * 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.
	 */
Z
Zhu Yi 已提交
2576
	len = priv->hw_setting.tx_cmd_len +
2577
			sizeof(struct iwl_cmd_header) + hdr_len;
Z
Zhu Yi 已提交
2578 2579 2580 2581 2582 2583 2584 2585 2586

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

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

2587 2588
	/* Physical address of this Tx command's header (not MAC header!),
	 * within command buffer array. */
C
Christoph Hellwig 已提交
2589 2590
	txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
		     offsetof(struct iwl3945_cmd, hdr);
Z
Zhu Yi 已提交
2591

2592 2593
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
C
Christoph Hellwig 已提交
2594
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Z
Zhu Yi 已提交
2595

2596
	if (info->control.hw_key)
2597
		iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
Z
Zhu Yi 已提交
2598

2599 2600
	/* Set up TFD's 2nd entry to point directly to remainder of skb,
	 * if any (802.11 null frames have no payload). */
Z
Zhu Yi 已提交
2601 2602 2603 2604
	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
2605
		iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Z
Zhu Yi 已提交
2606 2607 2608
	}

	if (!len)
2609
		/* If there is no payload, then we use only one Tx buffer */
Z
Zhu Yi 已提交
2610 2611
		*control_flags = TFD_CTL_COUNT_SET(1);
	else
2612 2613
		/* Else use 2 buffers.
		 * Tell 3945 about any padding after MAC header */
Z
Zhu Yi 已提交
2614 2615 2616
		*control_flags = TFD_CTL_COUNT_SET(2) |
			TFD_CTL_PAD_SET(U32_PAD(len));

2617
	/* Total # bytes to be transmitted */
Z
Zhu Yi 已提交
2618 2619 2620 2621
	len = (u16)skb->len;
	out_cmd->cmd.tx.len = cpu_to_le16(len);

	/* TODO need this for burst mode later on */
2622
	iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
Z
Zhu Yi 已提交
2623 2624

	/* set is_hcca to 0; it probably will never be implemented */
2625
	iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
Z
Zhu Yi 已提交
2626 2627 2628 2629

	out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
	out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;

2630
	if (!ieee80211_has_morefrags(hdr->frame_control)) {
Z
Zhu Yi 已提交
2631
		txq->need_update = 1;
2632
		if (qc)
Z
Zhu Yi 已提交
2633 2634 2635 2636 2637 2638
			priv->stations[sta_id].tid[tid].seq_number = seq_number;
	} else {
		wait_write_ptr = 1;
		txq->need_update = 0;
	}

2639
	iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
Z
Zhu Yi 已提交
2640 2641
			   sizeof(out_cmd->cmd.tx));

2642
	iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2643
			   ieee80211_hdrlen(fc));
Z
Zhu Yi 已提交
2644

2645
	/* Tell device the write index *just past* this latest filled TFD */
T
Tomas Winkler 已提交
2646
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
2647
	rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2648 2649 2650 2651 2652
	spin_unlock_irqrestore(&priv->lock, flags);

	if (rc)
		return rc;

C
Christoph Hellwig 已提交
2653
	if ((iwl3945_queue_space(q) < q->high_mark)
Z
Zhu Yi 已提交
2654 2655 2656 2657
	    && priv->mac80211_registered) {
		if (wait_write_ptr) {
			spin_lock_irqsave(&priv->lock, flags);
			txq->need_update = 1;
C
Christoph Hellwig 已提交
2658
			iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2659 2660 2661
			spin_unlock_irqrestore(&priv->lock, flags);
		}

2662
		ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
Z
Zhu Yi 已提交
2663 2664 2665 2666 2667 2668 2669 2670 2671 2672
	}

	return 0;

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

C
Christoph Hellwig 已提交
2673
static void iwl3945_set_rate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2674
{
2675
	const struct ieee80211_supported_band *sband = NULL;
Z
Zhu Yi 已提交
2676 2677 2678
	struct ieee80211_rate *rate;
	int i;

2679 2680
	sband = iwl3945_get_band(priv, priv->band);
	if (!sband) {
2681 2682 2683
		IWL_ERROR("Failed to set rate: unable to get hw mode\n");
		return;
	}
Z
Zhu Yi 已提交
2684 2685 2686 2687

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

2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698
	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
2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726
	}

	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)
		priv->staging_rxon.cck_basic_rates =
		    ((priv->active_rate_basic &
		      IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
	else
		priv->staging_rxon.cck_basic_rates =
		    (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;

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

C
Christoph Hellwig 已提交
2727
static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
Z
Zhu Yi 已提交
2728 2729 2730 2731 2732 2733 2734 2735 2736 2737
{
	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
2738
		iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2739
		/* FIXME: This is a workaround for AP */
2740
		if (priv->iw_mode != NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
2741
			spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2742
			iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
2743 2744
				    CSR_UCODE_SW_BIT_RFKILL);
			spin_unlock_irqrestore(&priv->lock, flags);
C
Christoph Hellwig 已提交
2745
			iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Z
Zhu Yi 已提交
2746 2747 2748 2749 2750 2751
			set_bit(STATUS_RF_KILL_SW, &priv->status);
		}
		return;
	}

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2752
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
2753 2754 2755 2756 2757 2758 2759 2760

	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);
C
Christoph Hellwig 已提交
2761 2762 2763
	iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl3945_grab_nic_access(priv))
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
2764 2765 2766 2767 2768 2769 2770 2771
	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;
	}

2772 2773
	if (priv->is_open)
		queue_work(priv->workqueue, &priv->restart);
Z
Zhu Yi 已提交
2774 2775 2776
	return;
}

C
Christoph Hellwig 已提交
2777
void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
Z
Zhu Yi 已提交
2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808
			    u32 decrypt_res, struct ieee80211_rx_status *stats)
{
	u16 fc =
	    le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);

	if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
		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;
	}
}

2809
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823

#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
2824
static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Z
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2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842
{
	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
2843
static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Z
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2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861
{
	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);
}

C
Christoph Hellwig 已提交
2862
static int iwl3945_get_measurement(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
2863 2864 2865
			       struct ieee80211_measurement_params *params,
			       u8 type)
{
2866
	struct iwl_spectrum_cmd spectrum;
2867
	struct iwl_rx_packet *res;
C
Christoph Hellwig 已提交
2868
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
2869 2870 2871 2872 2873 2874 2875 2876 2877
		.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
2878
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
2879
		add_time =
C
Christoph Hellwig 已提交
2880
		    iwl3945_usecs_to_beacons(
Z
Zhu Yi 已提交
2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892
			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
2893
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
2894
		spectrum.start_time =
C
Christoph Hellwig 已提交
2895
		    iwl3945_add_beacon_time(priv->last_beacon_time,
Z
Zhu Yi 已提交
2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907
				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;
	if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
		spectrum.flags |= RXON_FLG_BAND_24G_MSK |
		    RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;

C
Christoph Hellwig 已提交
2908
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
2909 2910 2911
	if (rc)
		return rc;

2912
	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
2913 2914 2915 2916 2917 2918 2919 2920 2921
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
		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) {
2922 2923
			IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
						res->u.spectrum.id);
Z
Zhu Yi 已提交
2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940
			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

C
Christoph Hellwig 已提交
2941 2942
static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2943
{
2944 2945
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl_alive_resp *palive;
Z
Zhu Yi 已提交
2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956
	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");
2957 2958
		memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
		       sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2959 2960 2961 2962
		pwork = &priv->init_alive_start;
	} else {
		IWL_DEBUG_INFO("Runtime Alive received.\n");
		memcpy(&priv->card_alive, &pkt->u.alive_frame,
2963
		       sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
2964
		pwork = &priv->alive_start;
C
Christoph Hellwig 已提交
2965
		iwl3945_disable_events(priv);
Z
Zhu Yi 已提交
2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976
	}

	/* 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
		IWL_WARNING("uCode did not respond OK.\n");
}

C
Christoph Hellwig 已提交
2977 2978
static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
				 struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2979
{
2980
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
2981 2982 2983 2984 2985

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

C
Christoph Hellwig 已提交
2986 2987
static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
2988
{
2989
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001

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

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

C
Christoph Hellwig 已提交
3002
static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3003
{
3004
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
C
Christoph Hellwig 已提交
3005
	struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3006
	struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
Z
Zhu Yi 已提交
3007 3008 3009 3010 3011 3012
	IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
		      le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
	rxon->channel = csa->channel;
	priv->staging_rxon.channel = csa->channel;
}

C
Christoph Hellwig 已提交
3013 3014
static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
					  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3015
{
3016
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3017
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3018
	struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
Z
Zhu Yi 已提交
3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030

	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
}

C
Christoph Hellwig 已提交
3031 3032
static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
				  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3033
{
3034
#ifdef CONFIG_IWL3945_DEBUG
3035
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3036
	struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
Z
Zhu Yi 已提交
3037 3038 3039 3040 3041
	IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}

C
Christoph Hellwig 已提交
3042 3043
static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
					     struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3044
{
3045
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3046 3047 3048
	IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
			"notification for %s:\n",
			le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3049 3050
	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
			   le32_to_cpu(pkt->len));
Z
Zhu Yi 已提交
3051 3052
}

C
Christoph Hellwig 已提交
3053
static void iwl3945_bg_beacon_update(struct work_struct *work)
Z
Zhu Yi 已提交
3054
{
C
Christoph Hellwig 已提交
3055 3056
	struct iwl3945_priv *priv =
		container_of(work, struct iwl3945_priv, beacon_update);
Z
Zhu Yi 已提交
3057 3058 3059
	struct sk_buff *beacon;

	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3060
	beacon = ieee80211_beacon_get(priv->hw, priv->vif);
Z
Zhu Yi 已提交
3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074

	if (!beacon) {
		IWL_ERROR("update beacon failed\n");
		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
3075
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3076 3077
}

C
Christoph Hellwig 已提交
3078 3079
static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3080
{
3081
#ifdef CONFIG_IWL3945_DEBUG
3082
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
C
Christoph Hellwig 已提交
3083
	struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Z
Zhu Yi 已提交
3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094
	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

3095
	if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
Z
Zhu Yi 已提交
3096 3097 3098 3099 3100
	    (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
		queue_work(priv->workqueue, &priv->beacon_update);
}

/* Service response to REPLY_SCAN_CMD (0x80) */
C
Christoph Hellwig 已提交
3101 3102
static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
			      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3103
{
3104
#ifdef CONFIG_IWL3945_DEBUG
3105
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3106 3107
	struct iwl_scanreq_notification *notif =
	    (struct iwl_scanreq_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3108 3109 3110 3111 3112 3113

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

/* Service SCAN_START_NOTIFICATION (0x82) */
C
Christoph Hellwig 已提交
3114 3115
static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3116
{
3117
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3118 3119
	struct iwl_scanstart_notification *notif =
	    (struct iwl_scanstart_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
	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) */
C
Christoph Hellwig 已提交
3131 3132
static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
				      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3133
{
3134
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3135 3136
	struct iwl_scanresults_notification *notif =
	    (struct iwl_scanresults_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151

	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;
3152
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3153 3154 3155
}

/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
C
Christoph Hellwig 已提交
3156 3157
static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
				       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3158
{
3159
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3160
	struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
Z
Zhu Yi 已提交
3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173

	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",
3174 3175
		       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
							"2.4" : "5.2",
Z
Zhu Yi 已提交
3176 3177 3178
		       jiffies_to_msecs(elapsed_jiffies
					(priv->scan_pass_start, jiffies)));

3179 3180 3181 3182 3183 3184 3185
	/* 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
3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199

	/* 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;
3200
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218
	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 */
C
Christoph Hellwig 已提交
3219 3220
static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3221
{
3222
	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3223 3224 3225 3226 3227 3228 3229
	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");

C
Christoph Hellwig 已提交
3230
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243
		    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
3244
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255

	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
3256
 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Z
Zhu Yi 已提交
3257 3258 3259 3260 3261 3262 3263
 *
 * 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.
 */
C
Christoph Hellwig 已提交
3264
static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3265
{
C
Christoph Hellwig 已提交
3266 3267 3268 3269
	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
3270
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3271 3272
	    iwl3945_rx_spectrum_measure_notif;
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Z
Zhu Yi 已提交
3273
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
C
Christoph Hellwig 已提交
3274 3275
	    iwl3945_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Z
Zhu Yi 已提交
3276

3277 3278 3279 3280
	/*
	 * 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
3281
	 */
C
Christoph Hellwig 已提交
3282 3283
	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
3284

C
Christoph Hellwig 已提交
3285 3286
	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
3287
	priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
C
Christoph Hellwig 已提交
3288
	    iwl3945_rx_scan_results_notif;
Z
Zhu Yi 已提交
3289
	priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3290 3291
	    iwl3945_rx_scan_complete_notif;
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Z
Zhu Yi 已提交
3292

3293
	/* Set up hardware specific Rx handlers */
C
Christoph Hellwig 已提交
3294
	iwl3945_hw_rx_handler_setup(priv);
Z
Zhu Yi 已提交
3295 3296
}

3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328
/**
 * 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.
 */
static void iwl3945_cmd_queue_reclaim(struct iwl3945_priv *priv,
				      int txq_id, int index)
{
	struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
	struct iwl3945_queue *q = &txq->q;
	int nfreed = 0;

	if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
		IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
			  "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) {
			IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
					q->write_ptr, q->read_ptr);
			queue_work(priv->workqueue, &priv->restart);
			break;
		}
		nfreed++;
	}
}


Z
Zhu Yi 已提交
3329
/**
C
Christoph Hellwig 已提交
3330
 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Z
Zhu Yi 已提交
3331 3332 3333 3334 3335 3336
 * @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
 */
C
Christoph Hellwig 已提交
3337 3338
static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3339
{
3340
	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3341 3342 3343
	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
	int txq_id = SEQ_TO_QUEUE(sequence);
	int index = SEQ_TO_INDEX(sequence);
3344
	int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
Z
Zhu Yi 已提交
3345
	int cmd_index;
C
Christoph Hellwig 已提交
3346
	struct iwl3945_cmd *cmd;
Z
Zhu Yi 已提交
3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360

	BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);

	cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
	cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];

	/* 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;

3361
	iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Z
Zhu Yi 已提交
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390

	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.
 *
3391
 * During initialization, the host sets up the READ queue position to the first
Z
Zhu Yi 已提交
3392 3393
 * INDEX position, and WRITE to the last (READ - 1 wrapped)
 *
3394
 * When the firmware places a packet in a buffer, it will advance the READ index
Z
Zhu Yi 已提交
3395 3396 3397 3398 3399 3400 3401
 * 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
3402
 *   to replenish the iwl->rxq->rx_free.
C
Christoph Hellwig 已提交
3403
 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Z
Zhu Yi 已提交
3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415
 *   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:
 *
3416 3417
 * iwl3945_rx_queue_alloc()   Allocates rx_free
 * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
C
Christoph Hellwig 已提交
3418
 *                            iwl3945_rx_queue_restock
3419
 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Z
Zhu Yi 已提交
3420 3421
 *                            queue, updates firmware pointers, and updates
 *                            the WRITE index.  If insufficient rx_free buffers
C
Christoph Hellwig 已提交
3422
 *                            are available, schedules iwl3945_rx_replenish
Z
Zhu Yi 已提交
3423 3424
 *
 * -- enable interrupts --
3425
 * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
Z
Zhu Yi 已提交
3426 3427
 *                            READ INDEX, detaching the SKB from the pool.
 *                            Moves the packet buffer from queue to rx_used.
C
Christoph Hellwig 已提交
3428
 *                            Calls iwl3945_rx_queue_restock to refill any empty
Z
Zhu Yi 已提交
3429 3430 3431 3432 3433 3434
 *                            slots.
 * ...
 *
 */

/**
C
Christoph Hellwig 已提交
3435
 * iwl3945_rx_queue_space - Return number of free slots available in queue.
Z
Zhu Yi 已提交
3436
 */
C
Christoph Hellwig 已提交
3437
static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449
{
	int s = q->read - q->write;
	if (s <= 0)
		s += RX_QUEUE_SIZE;
	/* keep some buffer to not confuse full and empty queue */
	s -= 2;
	if (s < 0)
		s = 0;
	return s;
}

/**
C
Christoph Hellwig 已提交
3450
 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
Z
Zhu Yi 已提交
3451
 */
C
Christoph Hellwig 已提交
3452
int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3453 3454 3455 3456 3457 3458 3459 3460 3461 3462
{
	u32 reg = 0;
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&q->lock, flags);

	if (q->need_update == 0)
		goto exit_unlock;

3463
	/* If power-saving is in use, make sure device is awake */
Z
Zhu Yi 已提交
3464
	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
C
Christoph Hellwig 已提交
3465
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3466 3467

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
C
Christoph Hellwig 已提交
3468
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3469 3470 3471 3472
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			goto exit_unlock;
		}

C
Christoph Hellwig 已提交
3473
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3474 3475 3476
		if (rc)
			goto exit_unlock;

3477
		/* Device expects a multiple of 8 */
3478
		iwl3945_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
Z
Zhu Yi 已提交
3479
				     q->write & ~0x7);
C
Christoph Hellwig 已提交
3480
		iwl3945_release_nic_access(priv);
3481 3482

	/* Else device is assumed to be awake */
Z
Zhu Yi 已提交
3483
	} else
3484
		/* Device expects a multiple of 8 */
3485
		iwl3945_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
Z
Zhu Yi 已提交
3486 3487 3488 3489 3490 3491 3492 3493 3494 3495


	q->need_update = 0;

 exit_unlock:
	spin_unlock_irqrestore(&q->lock, flags);
	return rc;
}

/**
3496
 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Z
Zhu Yi 已提交
3497
 */
C
Christoph Hellwig 已提交
3498
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3499 3500 3501 3502 3503 3504
					  dma_addr_t dma_addr)
{
	return cpu_to_le32((u32)dma_addr);
}

/**
C
Christoph Hellwig 已提交
3505
 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Z
Zhu Yi 已提交
3506
 *
3507
 * If there are slots in the RX queue that need to be restocked,
Z
Zhu Yi 已提交
3508
 * and we have free pre-allocated buffers, fill the ranks as much
3509
 * as we can, pulling from rx_free.
Z
Zhu Yi 已提交
3510 3511 3512 3513 3514
 *
 * 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.
 */
C
Christoph Hellwig 已提交
3515
static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3516
{
C
Christoph Hellwig 已提交
3517
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3518
	struct list_head *element;
C
Christoph Hellwig 已提交
3519
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3520 3521 3522 3523 3524
	unsigned long flags;
	int write, rc;

	spin_lock_irqsave(&rxq->lock, flags);
	write = rxq->write & ~0x7;
C
Christoph Hellwig 已提交
3525
	while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3526
		/* Get next free Rx buffer, remove from free list */
Z
Zhu Yi 已提交
3527
		element = rxq->rx_free.next;
C
Christoph Hellwig 已提交
3528
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
Z
Zhu Yi 已提交
3529
		list_del(element);
3530 3531

		/* Point to Rx buffer via next RBD in circular buffer */
C
Christoph Hellwig 已提交
3532
		rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
Z
Zhu Yi 已提交
3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543
		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);


3544 3545
	/* 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
3546 3547 3548 3549 3550
	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);
C
Christoph Hellwig 已提交
3551
		rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
Z
Zhu Yi 已提交
3552 3553 3554 3555 3556 3557 3558 3559
		if (rc)
			return rc;
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
3560
 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Z
Zhu Yi 已提交
3561 3562 3563
 *
 * When moving to rx_free an SKB is allocated for the slot.
 *
C
Christoph Hellwig 已提交
3564
 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3565
 * This is called as a scheduled work item (except for during initialization)
Z
Zhu Yi 已提交
3566
 */
3567
static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3568
{
C
Christoph Hellwig 已提交
3569
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3570
	struct list_head *element;
C
Christoph Hellwig 已提交
3571
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3572 3573 3574 3575
	unsigned long flags;
	spin_lock_irqsave(&rxq->lock, flags);
	while (!list_empty(&rxq->rx_used)) {
		element = rxq->rx_used.next;
C
Christoph Hellwig 已提交
3576
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3577 3578

		/* Alloc a new receive buffer */
Z
Zhu Yi 已提交
3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
		rxb->skb =
		    alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
		if (!rxb->skb) {
			if (net_ratelimit())
				printk(KERN_CRIT DRV_NAME
				       ": Can not allocate SKB buffers\n");
			/* 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
3590 3591 3592 3593 3594 3595 3596 3597 3598

		/* 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
3599 3600
		priv->alloc_rxb_skb++;
		list_del(element);
3601 3602

		/* Get physical address of RB/SKB */
Z
Zhu Yi 已提交
3603 3604 3605 3606 3607 3608 3609
		rxb->dma_addr =
		    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);
3610 3611 3612 3613 3614
}

/*
 * this should be called while priv->lock is locked
 */
3615
static void __iwl3945_rx_replenish(void *data)
3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629
{
	struct iwl3945_priv *priv = data;

	iwl3945_rx_allocate(priv);
	iwl3945_rx_queue_restock(priv);
}


void iwl3945_rx_replenish(void *data)
{
	struct iwl3945_priv *priv = data;
	unsigned long flags;

	iwl3945_rx_allocate(priv);
Z
Zhu Yi 已提交
3630 3631

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
3632
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3633 3634 3635 3636
	spin_unlock_irqrestore(&priv->lock, flags);
}

/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3637
 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
Z
Zhu Yi 已提交
3638 3639 3640
 * This free routine walks the list of POOL entries and if SKB is set to
 * non NULL it is unmapped and freed
 */
C
Christoph Hellwig 已提交
3641
static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657
{
	int i;
	for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
		if (rxq->pool[i].skb != NULL) {
			pci_unmap_single(priv->pci_dev,
					 rxq->pool[i].dma_addr,
					 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
			dev_kfree_skb(rxq->pool[i].skb);
		}
	}

	pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
			    rxq->dma_addr);
	rxq->bd = NULL;
}

C
Christoph Hellwig 已提交
3658
int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3659
{
C
Christoph Hellwig 已提交
3660
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3661 3662 3663 3664 3665 3666
	struct pci_dev *dev = priv->pci_dev;
	int i;

	spin_lock_init(&rxq->lock);
	INIT_LIST_HEAD(&rxq->rx_free);
	INIT_LIST_HEAD(&rxq->rx_used);
3667 3668

	/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
Z
Zhu Yi 已提交
3669 3670 3671
	rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
	if (!rxq->bd)
		return -ENOMEM;
3672

Z
Zhu Yi 已提交
3673 3674 3675
	/* Fill the rx_used queue with _all_ of the Rx buffers */
	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
		list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3676

Z
Zhu Yi 已提交
3677 3678 3679 3680 3681 3682 3683 3684
	/* Set us so that we have processed and used all buffers, but have
	 * not restocked the Rx queue with fresh buffers */
	rxq->read = rxq->write = 0;
	rxq->free_count = 0;
	rxq->need_update = 0;
	return 0;
}

C
Christoph Hellwig 已提交
3685
void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731
{
	unsigned long flags;
	int i;
	spin_lock_irqsave(&rxq->lock, flags);
	INIT_LIST_HEAD(&rxq->rx_free);
	INIT_LIST_HEAD(&rxq->rx_used);
	/* Fill the rx_used queue with _all_ of the Rx buffers */
	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
		/* In the reset function, these buffers may have been allocated
		 * to an SKB, so we need to unmap and free potential storage */
		if (rxq->pool[i].skb != NULL) {
			pci_unmap_single(priv->pci_dev,
					 rxq->pool[i].dma_addr,
					 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
			priv->alloc_rxb_skb--;
			dev_kfree_skb(rxq->pool[i].skb);
			rxq->pool[i].skb = NULL;
		}
		list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
	}

	/* Set us so that we have processed and used all buffers, but have
	 * not restocked the Rx queue with fresh buffers */
	rxq->read = rxq->write = 0;
	rxq->free_count = 0;
	spin_unlock_irqrestore(&rxq->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
3732
int iwl3945_calc_db_from_ratio(int sig_ratio)
Z
Zhu Yi 已提交
3733
{
3734 3735
	/* 1000:1 or higher just report as 60 dB */
	if (sig_ratio >= 1000)
Z
Zhu Yi 已提交
3736 3737
		return 60;

3738
	/* 100:1 or higher, divide by 10 and use table,
Z
Zhu Yi 已提交
3739
	 *   add 20 dB to make up for divide by 10 */
3740
	if (sig_ratio >= 100)
3741
		return 20 + (int)ratio2dB[sig_ratio/10];
Z
Zhu Yi 已提交
3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757

	/* 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
3758
int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Z
Zhu Yi 已提交
3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792
{
	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;
}

/**
3793
 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Z
Zhu Yi 已提交
3794 3795 3796 3797 3798
 *
 * Uses the priv->rx_handlers callback function array to invoke
 * the appropriate handlers, including command responses,
 * frame-received notifications, and other notifications.
 */
C
Christoph Hellwig 已提交
3799
static void iwl3945_rx_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3800
{
C
Christoph Hellwig 已提交
3801
	struct iwl3945_rx_mem_buffer *rxb;
3802
	struct iwl_rx_packet *pkt;
C
Christoph Hellwig 已提交
3803
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3804 3805 3806
	u32 r, i;
	int reclaim;
	unsigned long flags;
3807
	u8 fill_rx = 0;
M
Mohamed Abbas 已提交
3808
	u32 count = 8;
Z
Zhu Yi 已提交
3809

3810 3811
	/* uCode's read index (stored in shared DRAM) indicates the last Rx
	 * buffer that the driver may process (last buffer filled by ucode). */
C
Christoph Hellwig 已提交
3812
	r = iwl3945_hw_get_rx_read(priv);
Z
Zhu Yi 已提交
3813 3814
	i = rxq->read;

3815 3816
	if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
		fill_rx = 1;
Z
Zhu Yi 已提交
3817 3818 3819 3820 3821 3822 3823
	/* 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];

3824
		/* If an RXB doesn't have a Rx queue slot associated with it,
Z
Zhu Yi 已提交
3825 3826 3827 3828 3829 3830 3831 3832 3833
		 * then a bug has been introduced in the queue refilling
		 * routines -- catch it here */
		BUG_ON(rxb == NULL);

		rxq->queue[i] = NULL;

		pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
					    IWL_RX_BUF_SIZE,
					    PCI_DMA_FROMDEVICE);
3834
		pkt = (struct iwl_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847

		/* 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
3848
		 *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
Z
Zhu Yi 已提交
3849
		if (priv->rx_handlers[pkt->hdr.cmd]) {
3850
			IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Z
Zhu Yi 已提交
3851 3852 3853 3854 3855
				"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 */
3856
			IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Z
Zhu Yi 已提交
3857 3858 3859 3860 3861 3862
				"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) {
3863 3864
			/* Invoke any callbacks, transfer the skb to caller, and
			 * fire off the (possibly) blocking iwl3945_send_cmd()
Z
Zhu Yi 已提交
3865 3866
			 * as we reclaim the driver command queue */
			if (rxb && rxb->skb)
C
Christoph Hellwig 已提交
3867
				iwl3945_tx_cmd_complete(priv, rxb);
Z
Zhu Yi 已提交
3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886
			else
				IWL_WARNING("Claim null rxb?\n");
		}

		/* 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;
		}

		pci_unmap_single(priv->pci_dev, rxb->dma_addr,
				 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;
3887 3888 3889 3890 3891 3892 3893 3894 3895 3896
		/* 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
3897 3898 3899 3900
	}

	/* Backtrack one entry */
	priv->rxq.read = i;
C
Christoph Hellwig 已提交
3901
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3902 3903
}

3904 3905 3906
/**
 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
 */
C
Christoph Hellwig 已提交
3907 3908
static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
				  struct iwl3945_tx_queue *txq)
Z
Zhu Yi 已提交
3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921
{
	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. */
C
Christoph Hellwig 已提交
3922
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3923 3924 3925

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
			IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
C
Christoph Hellwig 已提交
3926
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3927 3928 3929 3930 3931
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			return rc;
		}

		/* restore this queue's parameters in nic hardware. */
C
Christoph Hellwig 已提交
3932
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3933 3934
		if (rc)
			return rc;
C
Christoph Hellwig 已提交
3935
		iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3936
				     txq->q.write_ptr | (txq_id << 8));
C
Christoph Hellwig 已提交
3937
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
3938 3939 3940 3941

	/* 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
C
Christoph Hellwig 已提交
3942
		iwl3945_write32(priv, HBUS_TARG_WRPTR,
3943
			    txq->q.write_ptr | (txq_id << 8));
Z
Zhu Yi 已提交
3944 3945 3946 3947 3948 3949

	txq->need_update = 0;

	return rc;
}

3950
#ifdef CONFIG_IWL3945_DEBUG
3951 3952
static void iwl3945_print_rx_config_cmd(struct iwl3945_priv *priv,
					struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
3953 3954
{
	IWL_DEBUG_RADIO("RX CONFIG:\n");
3955
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Z
Zhu Yi 已提交
3956 3957 3958 3959 3960 3961 3962 3963
	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
3964 3965
	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
3966 3967 3968 3969
	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

C
Christoph Hellwig 已提交
3970
static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3971 3972 3973
{
	IWL_DEBUG_ISR("Enabling interrupts\n");
	set_bit(STATUS_INT_ENABLED, &priv->status);
C
Christoph Hellwig 已提交
3974
	iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Z
Zhu Yi 已提交
3975 3976
}

3977 3978 3979 3980

/* call this function to flush any scheduled tasklet */
static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
{
T
Tomas Winkler 已提交
3981
	/* wait to make sure we flush pending tasklet*/
3982 3983 3984 3985 3986
	synchronize_irq(priv->pci_dev->irq);
	tasklet_kill(&priv->irq_tasklet);
}


C
Christoph Hellwig 已提交
3987
static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3988 3989 3990 3991
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
C
Christoph Hellwig 已提交
3992
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
3993 3994 3995

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
C
Christoph Hellwig 已提交
3996 3997
	iwl3945_write32(priv, CSR_INT, 0xffffffff);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Z
Zhu Yi 已提交
3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023
	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))

C
Christoph Hellwig 已提交
4024
static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4025 4026 4027 4028 4029 4030 4031 4032
{
	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
4033
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4034 4035 4036 4037
		IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4038
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4039 4040 4041 4042 4043
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

C
Christoph Hellwig 已提交
4044
	count = iwl3945_read_targ_mem(priv, base);
Z
Zhu Yi 已提交
4045 4046 4047

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
		IWL_ERROR("Start IWL Error Log Dump:\n");
4048
		IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
Z
Zhu Yi 已提交
4049 4050 4051 4052 4053 4054 4055
	}

	IWL_ERROR("Desc       Time       asrtPC  blink2 "
		  "ilink1  nmiPC   Line\n");
	for (i = ERROR_START_OFFSET;
	     i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
	     i += ERROR_ELEM_SIZE) {
C
Christoph Hellwig 已提交
4056
		desc = iwl3945_read_targ_mem(priv, base + i);
Z
Zhu Yi 已提交
4057
		time =
C
Christoph Hellwig 已提交
4058
		    iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Z
Zhu Yi 已提交
4059
		blink1 =
C
Christoph Hellwig 已提交
4060
		    iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Z
Zhu Yi 已提交
4061
		blink2 =
C
Christoph Hellwig 已提交
4062
		    iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Z
Zhu Yi 已提交
4063
		ilink1 =
C
Christoph Hellwig 已提交
4064
		    iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Z
Zhu Yi 已提交
4065
		ilink2 =
C
Christoph Hellwig 已提交
4066
		    iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Z
Zhu Yi 已提交
4067
		data1 =
C
Christoph Hellwig 已提交
4068
		    iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Z
Zhu Yi 已提交
4069 4070 4071 4072 4073 4074 4075

		IWL_ERROR
		    ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
		     desc_lookup(desc), desc, time, blink1, blink2,
		     ilink1, ilink2, data1);
	}

C
Christoph Hellwig 已提交
4076
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4077 4078 4079

}

4080
#define EVENT_START_OFFSET  (6 * sizeof(u32))
Z
Zhu Yi 已提交
4081 4082

/**
C
Christoph Hellwig 已提交
4083
 * iwl3945_print_event_log - Dump error event log to syslog
Z
Zhu Yi 已提交
4084
 *
C
Christoph Hellwig 已提交
4085
 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
Z
Zhu Yi 已提交
4086
 */
C
Christoph Hellwig 已提交
4087
static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
Z
Zhu Yi 已提交
4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110
				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++) {
C
Christoph Hellwig 已提交
4111
		ev = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4112
		ptr += sizeof(u32);
C
Christoph Hellwig 已提交
4113
		time = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4114 4115 4116 4117
		ptr += sizeof(u32);
		if (mode == 0)
			IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
		else {
C
Christoph Hellwig 已提交
4118
			data = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4119 4120 4121 4122 4123 4124
			ptr += sizeof(u32);
			IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
		}
	}
}

C
Christoph Hellwig 已提交
4125
static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
{
	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
4136
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4137 4138 4139 4140
		IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4141
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4142 4143 4144 4145 4146 4147
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

	/* event log header */
C
Christoph Hellwig 已提交
4148 4149 4150 4151
	capacity = iwl3945_read_targ_mem(priv, base);
	mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
	num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
	next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
Z
Zhu Yi 已提交
4152 4153 4154 4155 4156

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
4157
		IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
C
Christoph Hellwig 已提交
4158
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4159 4160 4161
		return;
	}

4162
	IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
Z
Zhu Yi 已提交
4163 4164 4165 4166 4167
		  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
4168
		iwl3945_print_event_log(priv, next_entry,
Z
Zhu Yi 已提交
4169 4170 4171
				    capacity - next_entry, mode);

	/* (then/else) start at top of log */
C
Christoph Hellwig 已提交
4172
	iwl3945_print_event_log(priv, 0, next_entry, mode);
Z
Zhu Yi 已提交
4173

C
Christoph Hellwig 已提交
4174
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4175 4176 4177
}

/**
C
Christoph Hellwig 已提交
4178
 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Z
Zhu Yi 已提交
4179
 */
C
Christoph Hellwig 已提交
4180
static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4181
{
C
Christoph Hellwig 已提交
4182
	/* Set the FW error flag -- cleared on iwl3945_down */
Z
Zhu Yi 已提交
4183 4184 4185 4186 4187
	set_bit(STATUS_FW_ERROR, &priv->status);

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

4188
#ifdef CONFIG_IWL3945_DEBUG
4189
	if (priv->debug_level & IWL_DL_FW_ERRORS) {
C
Christoph Hellwig 已提交
4190 4191
		iwl3945_dump_nic_error_log(priv);
		iwl3945_dump_nic_event_log(priv);
4192
		iwl3945_print_rx_config_cmd(priv, &priv->staging_rxon);
Z
Zhu Yi 已提交
4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205
	}
#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
4206
		if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4207 4208 4209 4210 4211 4212 4213 4214
			memcpy(&priv->recovery_rxon, &priv->active_rxon,
			       sizeof(priv->recovery_rxon));
			priv->error_recovering = 1;
		}
		queue_work(priv->workqueue, &priv->restart);
	}
}

C
Christoph Hellwig 已提交
4215
static void iwl3945_error_recovery(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4216 4217 4218 4219 4220 4221
{
	unsigned long flags;

	memcpy(&priv->staging_rxon, &priv->recovery_rxon,
	       sizeof(priv->staging_rxon));
	priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
4222
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
4223

C
Christoph Hellwig 已提交
4224
	iwl3945_add_station(priv, priv->bssid, 1, 0);
Z
Zhu Yi 已提交
4225 4226 4227 4228 4229 4230 4231

	spin_lock_irqsave(&priv->lock, flags);
	priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
	priv->error_recovering = 0;
	spin_unlock_irqrestore(&priv->lock, flags);
}

C
Christoph Hellwig 已提交
4232
static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4233 4234 4235 4236
{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
4237
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
4238 4239 4240 4241 4242 4243 4244 4245
	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. */
C
Christoph Hellwig 已提交
4246 4247
	inta = iwl3945_read32(priv, CSR_INT);
	iwl3945_write32(priv, CSR_INT, inta);
Z
Zhu Yi 已提交
4248 4249 4250 4251

	/* 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. */
C
Christoph Hellwig 已提交
4252 4253
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Z
Zhu Yi 已提交
4254

4255
#ifdef CONFIG_IWL3945_DEBUG
4256
	if (priv->debug_level & IWL_DL_ISR) {
4257 4258
		/* just for debug */
		inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
Z
Zhu Yi 已提交
4259 4260 4261 4262 4263 4264 4265 4266 4267
		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
4268
	if (inta_fh & CSR39_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
4269
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
4270
	if (inta_fh & CSR39_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
4271 4272 4273 4274 4275 4276 4277
		inta |= CSR_INT_BIT_FH_TX;

	/* Now service all interrupt bits discovered above. */
	if (inta & CSR_INT_BIT_HW_ERR) {
		IWL_ERROR("Microcode HW error detected.  Restarting.\n");

		/* Tell the device to stop sending interrupts */
C
Christoph Hellwig 已提交
4278
		iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
4279

C
Christoph Hellwig 已提交
4280
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4281 4282 4283 4284 4285 4286 4287 4288

		handled |= CSR_INT_BIT_HW_ERR;

		spin_unlock_irqrestore(&priv->lock, flags);

		return;
	}

4289
#ifdef CONFIG_IWL3945_DEBUG
4290
	if (priv->debug_level & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
4291
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
4292 4293 4294
		if (inta & CSR_INT_BIT_SCD)
			IWL_DEBUG_ISR("Scheduler finished to transmit "
				      "the frame/frames.\n");
Z
Zhu Yi 已提交
4295 4296 4297 4298 4299 4300 4301

		/* 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 */
4302
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
4303 4304 4305 4306 4307

	/* Error detected by uCode */
	if (inta & CSR_INT_BIT_SW_ERR) {
		IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
			  inta);
C
Christoph Hellwig 已提交
4308
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4309 4310 4311 4312 4313 4314
		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");
C
Christoph Hellwig 已提交
4315 4316 4317 4318 4319 4320 4321
		iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
		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
4322 4323 4324 4325 4326 4327 4328 4329

		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
4330
		iwl3945_rx_handle(priv);
Z
Zhu Yi 已提交
4331 4332 4333 4334 4335 4336
		handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
	}

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

C
Christoph Hellwig 已提交
4337 4338
		iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
		if (!iwl3945_grab_nic_access(priv)) {
4339 4340
			iwl3945_write_direct32(priv, FH39_TCSR_CREDIT
					     (FH39_SRVC_CHNL), 0x0);
C
Christoph Hellwig 已提交
4341
			iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355
		}
		handled |= CSR_INT_BIT_FH_TX;
	}

	if (inta & ~handled)
		IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);

	if (inta & ~CSR_INI_SET_MASK) {
		IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
			 inta & ~CSR_INI_SET_MASK);
		IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
	}

	/* Re-enable all interrupts */
4356 4357 4358
	/* 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
4359

4360
#ifdef CONFIG_IWL3945_DEBUG
4361
	if (priv->debug_level & (IWL_DL_ISR)) {
C
Christoph Hellwig 已提交
4362 4363 4364
		inta = iwl3945_read32(priv, CSR_INT);
		inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
		inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4365 4366 4367 4368 4369 4370 4371
		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
4372
static irqreturn_t iwl3945_isr(int irq, void *data)
Z
Zhu Yi 已提交
4373
{
C
Christoph Hellwig 已提交
4374
	struct iwl3945_priv *priv = data;
Z
Zhu Yi 已提交
4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385
	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. */
C
Christoph Hellwig 已提交
4386 4387
	inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4388 4389

	/* Discover which interrupts are active/pending */
C
Christoph Hellwig 已提交
4390 4391
	inta = iwl3945_read32(priv, CSR_INT);
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402

	/* 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 */
Z
Zhu Yi 已提交
4403
		IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
4404
		goto unplugged;
Z
Zhu Yi 已提交
4405 4406 4407 4408 4409
	}

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

4410 4411
	inta &= ~CSR_INT_BIT_SCD;

C
Christoph Hellwig 已提交
4412
	/* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4413 4414
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);
4415
unplugged:
Z
Zhu Yi 已提交
4416 4417 4418 4419 4420 4421
	spin_unlock(&priv->lock);

	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
4422 4423 4424
	/* 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
4425 4426 4427 4428 4429 4430
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

/************************** EEPROM BANDS ****************************
 *
C
Christoph Hellwig 已提交
4431
 * The iwl3945_eeprom_band definitions below provide the mapping from the
Z
Zhu Yi 已提交
4432 4433 4434
 * EEPROM contents to the specific channel number supported for each
 * band.
 *
C
Christoph Hellwig 已提交
4435
 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
Z
Zhu Yi 已提交
4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460
 * 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
4461
static const u8 iwl3945_eeprom_band_1[14] = {
Z
Zhu Yi 已提交
4462 4463 4464 4465
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

/* 5.2 GHz bands */
4466
static const u8 iwl3945_eeprom_band_2[] = {	/* 4915-5080MHz */
Z
Zhu Yi 已提交
4467 4468 4469
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

4470
static const u8 iwl3945_eeprom_band_3[] = {	/* 5170-5320MHz */
Z
Zhu Yi 已提交
4471 4472 4473
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

C
Christoph Hellwig 已提交
4474
static const u8 iwl3945_eeprom_band_4[] = {	/* 5500-5700MHz */
Z
Zhu Yi 已提交
4475 4476 4477
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

C
Christoph Hellwig 已提交
4478
static const u8 iwl3945_eeprom_band_5[] = {	/* 5725-5825MHz */
Z
Zhu Yi 已提交
4479 4480 4481
	145, 149, 153, 157, 161, 165
};

C
Christoph Hellwig 已提交
4482
static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
Z
Zhu Yi 已提交
4483
				    int *eeprom_ch_count,
C
Christoph Hellwig 已提交
4484
				    const struct iwl3945_eeprom_channel
Z
Zhu Yi 已提交
4485 4486 4487 4488 4489
				    **eeprom_ch_info,
				    const u8 **eeprom_ch_index)
{
	switch (band) {
	case 1:		/* 2.4GHz band */
C
Christoph Hellwig 已提交
4490
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
Z
Zhu Yi 已提交
4491
		*eeprom_ch_info = priv->eeprom.band_1_channels;
C
Christoph Hellwig 已提交
4492
		*eeprom_ch_index = iwl3945_eeprom_band_1;
Z
Zhu Yi 已提交
4493
		break;
4494
	case 2:		/* 4.9GHz band */
C
Christoph Hellwig 已提交
4495
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
Z
Zhu Yi 已提交
4496
		*eeprom_ch_info = priv->eeprom.band_2_channels;
C
Christoph Hellwig 已提交
4497
		*eeprom_ch_index = iwl3945_eeprom_band_2;
Z
Zhu Yi 已提交
4498 4499
		break;
	case 3:		/* 5.2GHz band */
C
Christoph Hellwig 已提交
4500
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
Z
Zhu Yi 已提交
4501
		*eeprom_ch_info = priv->eeprom.band_3_channels;
C
Christoph Hellwig 已提交
4502
		*eeprom_ch_index = iwl3945_eeprom_band_3;
Z
Zhu Yi 已提交
4503
		break;
4504
	case 4:		/* 5.5GHz band */
C
Christoph Hellwig 已提交
4505
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
Z
Zhu Yi 已提交
4506
		*eeprom_ch_info = priv->eeprom.band_4_channels;
C
Christoph Hellwig 已提交
4507
		*eeprom_ch_index = iwl3945_eeprom_band_4;
Z
Zhu Yi 已提交
4508
		break;
4509
	case 5:		/* 5.7GHz band */
C
Christoph Hellwig 已提交
4510
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
Z
Zhu Yi 已提交
4511
		*eeprom_ch_info = priv->eeprom.band_5_channels;
C
Christoph Hellwig 已提交
4512
		*eeprom_ch_index = iwl3945_eeprom_band_5;
Z
Zhu Yi 已提交
4513 4514 4515 4516 4517 4518 4519
		break;
	default:
		BUG();
		return;
	}
}

4520 4521 4522 4523 4524
/**
 * iwl3945_get_channel_info - Find driver's private channel info
 *
 * Based on band and channel number.
 */
C
Christoph Hellwig 已提交
4525
const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4526
						    enum ieee80211_band band, u16 channel)
Z
Zhu Yi 已提交
4527 4528 4529
{
	int i;

4530 4531
	switch (band) {
	case IEEE80211_BAND_5GHZ:
Z
Zhu Yi 已提交
4532 4533 4534 4535 4536 4537
		for (i = 14; i < priv->channel_count; i++) {
			if (priv->channel_info[i].channel == channel)
				return &priv->channel_info[i];
		}
		break;

4538
	case IEEE80211_BAND_2GHZ:
Z
Zhu Yi 已提交
4539 4540 4541
		if (channel >= 1 && channel <= 14)
			return &priv->channel_info[channel - 1];
		break;
4542 4543
	case IEEE80211_NUM_BANDS:
		WARN_ON(1);
Z
Zhu Yi 已提交
4544 4545 4546 4547 4548 4549 4550 4551
	}

	return NULL;
}

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

4552 4553 4554
/**
 * iwl3945_init_channel_map - Set up driver's info for all possible channels
 */
C
Christoph Hellwig 已提交
4555
static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4556 4557 4558
{
	int eeprom_ch_count = 0;
	const u8 *eeprom_ch_index = NULL;
C
Christoph Hellwig 已提交
4559
	const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
Z
Zhu Yi 已提交
4560
	int band, ch;
C
Christoph Hellwig 已提交
4561
	struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576

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

	if (priv->eeprom.version < 0x2f) {
		IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
			    priv->eeprom.version);
		return -EINVAL;
	}

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

	priv->channel_count =
C
Christoph Hellwig 已提交
4577 4578 4579 4580 4581
	    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
4582 4583 4584

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

C
Christoph Hellwig 已提交
4585
	priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
Z
Zhu Yi 已提交
4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599
				     priv->channel_count, GFP_KERNEL);
	if (!priv->channel_info) {
		IWL_ERROR("Could not allocate channel_info\n");
		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
4600
		iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Z
Zhu Yi 已提交
4601 4602 4603 4604 4605
					&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];
4606 4607
			ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
			    IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633

			/* 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;

4634
			IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
Z
Zhu Yi 已提交
4635 4636 4637 4638
				       " %ddBm): Ad-Hoc %ssupported\n",
				       ch_info->channel,
				       is_channel_a_band(ch_info) ?
				       "5.2" : "2.4",
4639
				       CHECK_AND_PRINT(VALID),
Z
Zhu Yi 已提交
4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663
				       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++;
		}
	}

4664
	/* Set up txpower settings in driver for all channels */
Z
Zhu Yi 已提交
4665 4666 4667 4668 4669 4670
	if (iwl3945_txpower_set_from_eeprom(priv))
		return -EIO;

	return 0;
}

4671 4672 4673 4674 4675 4676 4677 4678 4679
/*
 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
 */
static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
{
	kfree(priv->channel_info);
	priv->channel_count = 0;
}

Z
Zhu Yi 已提交
4680 4681 4682
/* 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.  */
4683 4684 4685 4686 4687
#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
4688 4689 4690 4691 4692 4693 4694 4695

/* 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 */
4696
#define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)	/* msec */
Z
Zhu Yi 已提交
4697 4698 4699 4700 4701 4702 4703 4704 4705

/* 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
4706
#define IWL_SCAN_PROBE_MASK(n)	 (BIT(n) | (BIT(n) - BIT(1)))
4707

4708
static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4709 4710
						enum ieee80211_band band,
						u8 n_probes)
Z
Zhu Yi 已提交
4711
{
4712
	if (band == IEEE80211_BAND_5GHZ)
4713 4714
		return IWL_ACTIVE_DWELL_TIME_52 +
			IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4715
	else
4716 4717
		return IWL_ACTIVE_DWELL_TIME_24 +
			IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4718 4719
}

4720 4721
static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
4722
{
4723
	u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Z
Zhu Yi 已提交
4724 4725 4726
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;

C
Christoph Hellwig 已提交
4727
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739
		/* 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;
}

4740 4741
static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
					 enum ieee80211_band band,
4742
				     u8 is_active, u8 n_probes,
C
Christoph Hellwig 已提交
4743
				     struct iwl3945_scan_channel *scan_ch)
Z
Zhu Yi 已提交
4744 4745
{
	const struct ieee80211_channel *channels = NULL;
4746
	const struct ieee80211_supported_band *sband;
C
Christoph Hellwig 已提交
4747
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4748 4749 4750 4751
	u16 passive_dwell = 0;
	u16 active_dwell = 0;
	int added, i;

4752 4753
	sband = iwl3945_get_band(priv, band);
	if (!sband)
Z
Zhu Yi 已提交
4754 4755
		return 0;

4756
	channels = sband->channels;
Z
Zhu Yi 已提交
4757

4758
	active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4759
	passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Z
Zhu Yi 已提交
4760

4761 4762 4763
	if (passive_dwell <= active_dwell)
		passive_dwell = active_dwell + 1;

4764
	for (i = 0, added = 0; i < sband->n_channels; i++) {
4765 4766 4767
		if (channels[i].flags & IEEE80211_CHAN_DISABLED)
			continue;

4768
		scan_ch->channel = channels[i].hw_value;
Z
Zhu Yi 已提交
4769

4770
		ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Z
Zhu Yi 已提交
4771
		if (!is_channel_valid(ch_info)) {
4772
			IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
Z
Zhu Yi 已提交
4773 4774 4775 4776
				       scan_ch->channel);
			continue;
		}

4777 4778 4779 4780 4781
		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
4782
		if (!is_active || is_channel_passive(ch_info) ||
4783
		    (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
Z
Zhu Yi 已提交
4784
			scan_ch->type = 0;	/* passive */
4785 4786 4787
			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
4788
			scan_ch->type = 1;	/* active */
4789
		}
Z
Zhu Yi 已提交
4790

4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803
		/* 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
4804

4805
		/* Set txpower levels to defaults */
Z
Zhu Yi 已提交
4806 4807 4808 4809
		scan_ch->tpc.dsp_atten = 110;
		/* scan_pwr_info->tpc.dsp_atten; */

		/*scan_pwr_info->tpc.tx_gain; */
4810
		if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4811 4812 4813 4814
			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
4815
			 * power level:
4816
			 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Z
Zhu Yi 已提交
4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833
			 */
		}

		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;
}

C
Christoph Hellwig 已提交
4834
static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
4835 4836 4837 4838 4839
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
4840 4841 4842 4843 4844
		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;
		if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
Z
Zhu Yi 已提交
4845
			/*
4846
			 * If CCK != 1M then set short preamble rate flag.
Z
Zhu Yi 已提交
4847
			 */
C
Christoph Hellwig 已提交
4848
			rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4849
				0 : IEEE80211_RATE_SHORT_PREAMBLE;
Z
Zhu Yi 已提交
4850 4851 4852 4853 4854
		}
	}
}

/**
C
Christoph Hellwig 已提交
4855
 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Z
Zhu Yi 已提交
4856
 */
C
Christoph Hellwig 已提交
4857
static int iwl3945_init_geos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4858
{
C
Christoph Hellwig 已提交
4859
	struct iwl3945_channel_info *ch;
4860
	struct ieee80211_supported_band *sband;
Z
Zhu Yi 已提交
4861 4862 4863 4864 4865
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

4866 4867
	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Z
Zhu Yi 已提交
4868 4869 4870 4871 4872 4873 4874
		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);
4875
	if (!channels)
Z
Zhu Yi 已提交
4876 4877
		return -ENOMEM;

4878
	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Z
Zhu Yi 已提交
4879 4880 4881 4882 4883 4884 4885
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896
	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
4897 4898 4899 4900

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

C
Christoph Hellwig 已提交
4901
	iwl3945_init_hw_rates(priv, rates);
Z
Zhu Yi 已提交
4902

4903
	for (i = 0;  i < priv->channel_count; i++) {
Z
Zhu Yi 已提交
4904 4905
		ch = &priv->channel_info[i];

4906 4907
		/* FIXME: might be removed if scan is OK*/
		if (!is_channel_valid(ch))
Z
Zhu Yi 已提交
4908 4909 4910
			continue;

		if (is_channel_a_band(ch))
4911
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4912
		else
4913
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];
Z
Zhu Yi 已提交
4914

4915 4916 4917
		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4918 4919
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
4920
		geo_ch->hw_value = ch->channel;
Z
Zhu Yi 已提交
4921 4922

		if (is_channel_valid(ch)) {
4923 4924
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Z
Zhu Yi 已提交
4925

4926 4927
			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Z
Zhu Yi 已提交
4928 4929

			if (ch->flags & EEPROM_CHANNEL_RADAR)
4930
				geo_ch->flags |= IEEE80211_CHAN_RADAR;
Z
Zhu Yi 已提交
4931 4932 4933 4934

			if (ch->max_power_avg > priv->max_channel_txpower_limit)
				priv->max_channel_txpower_limit =
				    ch->max_power_avg;
4935
		} else {
4936
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947
		}

		/* 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
4948 4949
	}

T
Tomas Winkler 已提交
4950 4951
	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
Z
Zhu Yi 已提交
4952 4953 4954 4955
		printk(KERN_INFO DRV_NAME
		       ": 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
4956
		 priv->cfg->sku &= ~IWL_SKU_A;
Z
Zhu Yi 已提交
4957 4958 4959 4960
	}

	printk(KERN_INFO DRV_NAME
	       ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4961 4962
	       priv->bands[IEEE80211_BAND_2GHZ].n_channels,
	       priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Z
Zhu Yi 已提交
4963

4964 4965 4966 4967 4968 4969
	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
4970 4971 4972 4973 4974 4975

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}

4976 4977 4978 4979 4980 4981 4982 4983 4984 4985
/*
 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
 */
static void iwl3945_free_geos(struct iwl3945_priv *priv)
{
	kfree(priv->ieee_channels);
	kfree(priv->ieee_rates);
	clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}

Z
Zhu Yi 已提交
4986 4987 4988 4989 4990 4991
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

C
Christoph Hellwig 已提交
4992
static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4993
{
4994 4995 4996 4997 4998 4999
	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
5000 5001 5002
}

/**
C
Christoph Hellwig 已提交
5003
 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5004 5005
 *     looking at all data.
 */
5006
static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5007 5008 5009 5010 5011 5012 5013 5014
{
	u32 val;
	u32 save_len = len;
	int rc = 0;
	u32 errcnt;

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

C
Christoph Hellwig 已提交
5015
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5016 5017 5018
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5019
	iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
Z
Zhu Yi 已提交
5020 5021 5022 5023 5024 5025

	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 */
C
Christoph Hellwig 已提交
5026
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037
		if (val != le32_to_cpu(*image)) {
			IWL_ERROR("uCode INST section is invalid at "
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  save_len - len, val, le32_to_cpu(*image));
			rc = -EIO;
			errcnt++;
			if (errcnt >= 20)
				break;
		}
	}

C
Christoph Hellwig 已提交
5038
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5039 5040

	if (!errcnt)
5041
		IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Z
Zhu Yi 已提交
5042 5043 5044 5045 5046 5047

	return rc;
}


/**
C
Christoph Hellwig 已提交
5048
 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5049 5050 5051
 *   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.
 */
C
Christoph Hellwig 已提交
5052
static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5053 5054 5055 5056 5057 5058 5059 5060
{
	u32 val;
	int rc = 0;
	u32 errcnt = 0;
	u32 i;

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

C
Christoph Hellwig 已提交
5061
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5062 5063 5064 5065 5066 5067 5068
	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 */
C
Christoph Hellwig 已提交
5069
		iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Z
Zhu Yi 已提交
5070
			i + RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5071
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084
		if (val != le32_to_cpu(*image)) {
#if 0 /* Enable this if you want to see details */
			IWL_ERROR("uCode INST section is invalid at "
				  "offset 0x%x, is 0x%x, s/b 0x%x\n",
				  i, val, *image);
#endif
			rc = -EIO;
			errcnt++;
			if (errcnt >= 3)
				break;
		}
	}

C
Christoph Hellwig 已提交
5085
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5086 5087 5088 5089 5090 5091

	return rc;
}


/**
C
Christoph Hellwig 已提交
5092
 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Z
Zhu Yi 已提交
5093 5094
 *    and verify its contents
 */
C
Christoph Hellwig 已提交
5095
static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5096 5097 5098 5099 5100 5101 5102 5103
{
	__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
5104
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5105 5106 5107 5108 5109 5110 5111 5112
	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
5113
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5114 5115 5116 5117 5118 5119 5120 5121
	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
5122
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5123 5124 5125 5126 5127 5128 5129
	if (rc == 0) {
		IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
		return 0;
	}

	IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");

5130 5131 5132
	/* 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
5133 5134
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
5135
	rc = iwl3945_verify_inst_full(priv, image, len);
Z
Zhu Yi 已提交
5136 5137 5138 5139 5140 5141

	return rc;
}


/* check contents of special bootstrap uCode SRAM */
C
Christoph Hellwig 已提交
5142
static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5143 5144 5145 5146 5147 5148 5149 5150 5151
{
	__le32 *image = priv->ucode_boot.v_addr;
	u32 len = priv->ucode_boot.len;
	u32 reg;
	u32 val;

	IWL_DEBUG_INFO("Begin verify bsm\n");

	/* verify BSM SRAM contents */
C
Christoph Hellwig 已提交
5152
	val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
Z
Zhu Yi 已提交
5153 5154
	for (reg = BSM_SRAM_LOWER_BOUND;
	     reg < BSM_SRAM_LOWER_BOUND + len;
5155
	     reg += sizeof(u32), image++) {
C
Christoph Hellwig 已提交
5156
		val = iwl3945_read_prph(priv, reg);
Z
Zhu Yi 已提交
5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172
		if (val != le32_to_cpu(*image)) {
			IWL_ERROR("BSM uCode verification failed at "
				  "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
				  BSM_SRAM_LOWER_BOUND,
				  reg - BSM_SRAM_LOWER_BOUND, len,
				  val, le32_to_cpu(*image));
			return -EIO;
		}
	}

	IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");

	return 0;
}

/**
C
Christoph Hellwig 已提交
5173
 * iwl3945_load_bsm - Load bootstrap instructions
Z
Zhu Yi 已提交
5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203
 *
 * BSM operation:
 *
 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 * in special SRAM that does not power down during RFKILL.  When powering back
 * up after power-saving sleeps (or during initial uCode load), the BSM loads
 * the bootstrap program into the on-board processor, and starts it.
 *
 * The bootstrap program loads (via DMA) instructions and data for a new
 * program from host DRAM locations indicated by the host driver in the
 * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 * automatically.
 *
 * When initializing the NIC, the host driver points the BSM to the
 * "initialize" uCode image.  This uCode sets up some internal data, then
 * notifies host via "initialize alive" that it is complete.
 *
 * The host then replaces the BSM_DRAM_* pointer values to point to the
 * normal runtime uCode instructions and a backup uCode data cache buffer
 * (filled initially with starting data values for the on-board processor),
 * then triggers the "initialize" uCode to load and launch the runtime uCode,
 * which begins normal operation.
 *
 * When doing a power-save shutdown, runtime uCode saves data SRAM into
 * the backup data cache in DRAM before SRAM is powered down.
 *
 * When powering back up, the BSM loads the bootstrap program.  This reloads
 * the runtime uCode instructions and the backup data cache into SRAM,
 * and re-launches the runtime uCode from where it left off.
 */
C
Christoph Hellwig 已提交
5204
static int iwl3945_load_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223
{
	__le32 *image = priv->ucode_boot.v_addr;
	u32 len = priv->ucode_boot.len;
	dma_addr_t pinst;
	dma_addr_t pdata;
	u32 inst_len;
	u32 data_len;
	int rc;
	int i;
	u32 done;
	u32 reg_offset;

	IWL_DEBUG_INFO("Begin load bsm\n");

	/* make sure bootstrap program is no larger than BSM's SRAM size */
	if (len > IWL_MAX_BSM_SIZE)
		return -EINVAL;

	/* Tell bootstrap uCode where to find the "Initialize" uCode
5224
	 *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
C
Christoph Hellwig 已提交
5225
	 * NOTE:  iwl3945_initialize_alive_start() will replace these values,
Z
Zhu Yi 已提交
5226 5227 5228 5229 5230 5231 5232
	 *        after the "initialize" uCode has run, to point to
	 *        runtime/protocol instructions and backup data cache. */
	pinst = priv->ucode_init.p_addr;
	pdata = priv->ucode_init_data.p_addr;
	inst_len = priv->ucode_init.len;
	data_len = priv->ucode_init_data.len;

C
Christoph Hellwig 已提交
5233
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5234 5235 5236
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5237 5238 5239 5240
	iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
	iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
	iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
	iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
Z
Zhu Yi 已提交
5241 5242 5243 5244 5245

	/* Fill BSM memory with bootstrap instructions */
	for (reg_offset = BSM_SRAM_LOWER_BOUND;
	     reg_offset < BSM_SRAM_LOWER_BOUND + len;
	     reg_offset += sizeof(u32), image++)
C
Christoph Hellwig 已提交
5246
		_iwl3945_write_prph(priv, reg_offset,
Z
Zhu Yi 已提交
5247 5248
					  le32_to_cpu(*image));

C
Christoph Hellwig 已提交
5249
	rc = iwl3945_verify_bsm(priv);
Z
Zhu Yi 已提交
5250
	if (rc) {
C
Christoph Hellwig 已提交
5251
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5252 5253 5254 5255
		return rc;
	}

	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
C
Christoph Hellwig 已提交
5256 5257
	iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
	iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
Z
Zhu Yi 已提交
5258
				 RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5259
	iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Z
Zhu Yi 已提交
5260 5261 5262

	/* Load bootstrap code into instruction SRAM now,
	 *   to prepare to load "initialize" uCode */
C
Christoph Hellwig 已提交
5263
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5264 5265 5266 5267
		BSM_WR_CTRL_REG_BIT_START);

	/* Wait for load of bootstrap uCode to finish */
	for (i = 0; i < 100; i++) {
C
Christoph Hellwig 已提交
5268
		done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
Z
Zhu Yi 已提交
5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281
		if (!(done & BSM_WR_CTRL_REG_BIT_START))
			break;
		udelay(10);
	}
	if (i < 100)
		IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
	else {
		IWL_ERROR("BSM write did not complete!\n");
		return -EIO;
	}

	/* Enable future boot loads whenever power management unit triggers it
	 *   (e.g. when powering back up after power-save shutdown) */
C
Christoph Hellwig 已提交
5282
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5283 5284
		BSM_WR_CTRL_REG_BIT_START_EN);

C
Christoph Hellwig 已提交
5285
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5286 5287 5288 5289

	return 0;
}

C
Christoph Hellwig 已提交
5290
static void iwl3945_nic_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5291 5292
{
	/* Remove all resets to allow NIC to operate */
C
Christoph Hellwig 已提交
5293
	iwl3945_write32(priv, CSR_RESET, 0);
Z
Zhu Yi 已提交
5294 5295 5296
}

/**
C
Christoph Hellwig 已提交
5297
 * iwl3945_read_ucode - Read uCode images from disk file.
Z
Zhu Yi 已提交
5298 5299 5300
 *
 * Copy into buffers for card to fetch via bus-mastering
 */
C
Christoph Hellwig 已提交
5301
static int iwl3945_read_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5302
{
C
Christoph Hellwig 已提交
5303
	struct iwl3945_ucode *ucode;
5304
	int ret = -EINVAL, index;
Z
Zhu Yi 已提交
5305 5306
	const struct firmware *ucode_raw;
	/* firmware file name contains uCode/driver compatibility version */
5307 5308 5309 5310
	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
5311 5312
	u8 *src;
	size_t len;
5313
	u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
Z
Zhu Yi 已提交
5314 5315 5316

	/* Ask kernel firmware_class module to get the boot firmware off disk.
	 * request_firmware() is synchronous, file is in memory on return. */
5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334
	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) {
			IWL_ERROR("%s firmware file req failed: Reason %d\n",
				  buf, ret);
			if (ret == -ENOENT)
				continue;
			else
				goto error;
		} else {
			if (index < api_max)
				IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
					  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
5335 5336
	}

5337 5338
	if (ret < 0)
		goto error;
Z
Zhu Yi 已提交
5339 5340 5341 5342

	/* Make sure that we got at least our header! */
	if (ucode_raw->size < sizeof(*ucode)) {
		IWL_ERROR("File size way too small!\n");
5343
		ret = -EINVAL;
Z
Zhu Yi 已提交
5344 5345 5346 5347 5348 5349
		goto err_release;
	}

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

5350
	priv->ucode_ver = le32_to_cpu(ucode->ver);
5351
	api_ver = IWL_UCODE_API(priv->ucode_ver);
Z
Zhu Yi 已提交
5352 5353 5354 5355 5356 5357
	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);

5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376
	/* 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) {
		IWL_ERROR("Driver unable to support your firmware API. "
			  "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)
		IWL_ERROR("Firmware has old API version. Expected %u, "
			  "got %u. New firmware can be obtained "
			  "from http://www.intellinuxwireless.org.\n",
			  api_max, api_ver);

	printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
5377 5378 5379 5380
		       IWL_UCODE_MAJOR(priv->ucode_ver),
		       IWL_UCODE_MINOR(priv->ucode_ver),
		       IWL_UCODE_API(priv->ucode_ver),
		       IWL_UCODE_SERIAL(priv->ucode_ver));
5381 5382
	IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
		       priv->ucode_ver);
5383 5384 5385 5386 5387
	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
5388

5389

Z
Zhu Yi 已提交
5390 5391 5392 5393 5394 5395 5396
	/* 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);
5397
		ret = -EINVAL;
Z
Zhu Yi 已提交
5398 5399 5400 5401 5402
		goto err_release;
	}

	/* Verify that uCode images will fit in card's SRAM */
	if (inst_size > IWL_MAX_INST_SIZE) {
5403 5404 5405
		IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
			       inst_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5406 5407 5408 5409
		goto err_release;
	}

	if (data_size > IWL_MAX_DATA_SIZE) {
5410 5411 5412
		IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
			       data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5413 5414 5415
		goto err_release;
	}
	if (init_size > IWL_MAX_INST_SIZE) {
5416 5417 5418
		IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
				init_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5419 5420 5421
		goto err_release;
	}
	if (init_data_size > IWL_MAX_DATA_SIZE) {
5422 5423 5424
		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
5425 5426 5427
		goto err_release;
	}
	if (boot_size > IWL_MAX_BSM_SIZE) {
5428 5429 5430
		IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
				boot_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5431 5432 5433 5434 5435 5436 5437 5438 5439
		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;
5440
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
5441 5442

	priv->ucode_data.len = data_size;
5443
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
5444 5445

	priv->ucode_data_backup.len = data_size;
5446
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
5447

5448 5449 5450
	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
5451 5452

	/* Initialization instructions and data */
5453 5454
	if (init_size && init_data_size) {
		priv->ucode_init.len = init_size;
5455
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5456 5457

		priv->ucode_init_data.len = init_data_size;
5458
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5459 5460 5461 5462

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5463 5464

	/* Bootstrap (instructions only, no data) */
5465 5466
	if (boot_size) {
		priv->ucode_boot.len = boot_size;
5467
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
5468

5469 5470 5471
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5472 5473 5474 5475 5476 5477

	/* 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;
5478
	IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Z
Zhu Yi 已提交
5479 5480 5481 5482 5483
	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
5484
	 * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
Z
Zhu Yi 已提交
5485 5486
	src = &ucode->data[inst_size];
	len = priv->ucode_data.len;
5487
	IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Z
Zhu Yi 已提交
5488 5489 5490 5491 5492 5493 5494
	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;
5495 5496
		IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
			       len);
Z
Zhu Yi 已提交
5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521
		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:
	IWL_ERROR("failed to allocate pci memory\n");
5522
	ret = -ENOMEM;
C
Christoph Hellwig 已提交
5523
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
5524 5525 5526 5527 5528

 err_release:
	release_firmware(ucode_raw);

 error:
5529
	return ret;
Z
Zhu Yi 已提交
5530 5531 5532 5533
}


/**
C
Christoph Hellwig 已提交
5534
 * iwl3945_set_ucode_ptrs - Set uCode address location
Z
Zhu Yi 已提交
5535 5536 5537 5538 5539 5540 5541
 *
 * 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.
 */
C
Christoph Hellwig 已提交
5542
static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553
{
	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);
C
Christoph Hellwig 已提交
5554
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5555 5556 5557 5558 5559 5560
	if (rc) {
		spin_unlock_irqrestore(&priv->lock, flags);
		return rc;
	}

	/* Tell bootstrap uCode where to find image to load */
C
Christoph Hellwig 已提交
5561 5562 5563
	iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
	iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
	iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5564 5565
				 priv->ucode_data.len);

T
Tomas Winkler 已提交
5566
	/* Inst byte count must be last to set up, bit 31 signals uCode
Z
Zhu Yi 已提交
5567
	 *   that all new ptr/size info is in place */
C
Christoph Hellwig 已提交
5568
	iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5569 5570
				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);

C
Christoph Hellwig 已提交
5571
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5572 5573 5574 5575 5576 5577 5578 5579 5580

	spin_unlock_irqrestore(&priv->lock, flags);

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

	return rc;
}

/**
C
Christoph Hellwig 已提交
5581
 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5582 5583 5584 5585
 *
 * Called after REPLY_ALIVE notification received from "initialize" uCode.
 *
 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5586
 */
C
Christoph Hellwig 已提交
5587
static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599
{
	/* 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
5600
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5601 5602 5603 5604 5605 5606 5607 5608 5609 5610
		/* 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
5611
	if (iwl3945_set_ucode_ptrs(priv)) {
Z
Zhu Yi 已提交
5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623
		/* 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);
}


5624 5625 5626 5627
/* temporary */
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
				     struct sk_buff *skb);

Z
Zhu Yi 已提交
5628
/**
C
Christoph Hellwig 已提交
5629
 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5630
 *                   from protocol/runtime uCode (initialization uCode's
C
Christoph Hellwig 已提交
5631
 *                   Alive gets handled by iwl3945_init_alive_start()).
Z
Zhu Yi 已提交
5632
 */
C
Christoph Hellwig 已提交
5633
static void iwl3945_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650
{
	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
5651
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5652 5653 5654 5655 5656 5657
		/* 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
5658
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5659

C
Christoph Hellwig 已提交
5660
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5661
	if (rc) {
T
Tomas Winkler 已提交
5662
		IWL_WARNING("Can not read RFKILL status from adapter\n");
Z
Zhu Yi 已提交
5663 5664 5665
		return;
	}

C
Christoph Hellwig 已提交
5666
	rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
Z
Zhu Yi 已提交
5667
	IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
C
Christoph Hellwig 已提交
5668
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5669 5670 5671

	if (rfkill & 0x1) {
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
T
Tomas Winkler 已提交
5672
		/* if RFKILL is not on, then wait for thermal
Z
Zhu Yi 已提交
5673
		 * sensor in adapter to kick in */
C
Christoph Hellwig 已提交
5674
		while (iwl3945_hw_get_temperature(priv) == 0) {
Z
Zhu Yi 已提交
5675 5676 5677 5678 5679 5680 5681 5682 5683 5684
			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);

5685
	/* After the ALIVE response, we can send commands to 3945 uCode */
Z
Zhu Yi 已提交
5686 5687 5688 5689 5690
	set_bit(STATUS_ALIVE, &priv->status);

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

C
Christoph Hellwig 已提交
5691
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
5692 5693
		return;

5694
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
5695 5696 5697 5698

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

C
Christoph Hellwig 已提交
5699
	iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Z
Zhu Yi 已提交
5700

C
Christoph Hellwig 已提交
5701 5702 5703
	if (iwl3945_is_associated(priv)) {
		struct iwl3945_rxon_cmd *active_rxon =
				(struct iwl3945_rxon_cmd *)(&priv->active_rxon);
Z
Zhu Yi 已提交
5704 5705 5706 5707 5708 5709

		memcpy(&priv->staging_rxon, &priv->active_rxon,
		       sizeof(priv->staging_rxon));
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
	} else {
		/* Initialize our rx_config data */
5710
		iwl3945_connection_init_rx_config(priv, priv->iw_mode);
Z
Zhu Yi 已提交
5711 5712 5713
		memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	}

5714
	/* Configure Bluetooth device coexistence support */
C
Christoph Hellwig 已提交
5715
	iwl3945_send_bt_config(priv);
Z
Zhu Yi 已提交
5716 5717

	/* Configure the adapter for unassociated operation */
C
Christoph Hellwig 已提交
5718
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5719 5720 5721

	iwl3945_reg_txpower_periodic(priv);

5722 5723
	iwl3945_led_register(priv);

Z
Zhu Yi 已提交
5724
	IWL_DEBUG_INFO("ALIVE processing complete.\n");
5725
	set_bit(STATUS_READY, &priv->status);
5726
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
5727 5728

	if (priv->error_recovering)
C
Christoph Hellwig 已提交
5729
		iwl3945_error_recovery(priv);
Z
Zhu Yi 已提交
5730

5731 5732 5733 5734 5735 5736 5737 5738
	/* 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
5739 5740 5741 5742 5743 5744
	return;

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

C
Christoph Hellwig 已提交
5745
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
Z
Zhu Yi 已提交
5746

C
Christoph Hellwig 已提交
5747
static void __iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759
{
	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
5760
	iwl3945_led_unregister(priv);
C
Christoph Hellwig 已提交
5761
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5762 5763 5764 5765 5766 5767 5768 5769 5770 5771

	/* 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 */
C
Christoph Hellwig 已提交
5772
	iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
5773 5774

	/* tell the device to stop sending interrupts */
5775
	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5776
	iwl3945_disable_interrupts(priv);
5777 5778
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
5779 5780 5781 5782

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

C
Christoph Hellwig 已提交
5783
	/* If we have not previously called iwl3945_init() then
Z
Zhu Yi 已提交
5784
	 * clear all bits but the RF Kill and SUSPEND bits and return */
C
Christoph Hellwig 已提交
5785
	if (!iwl3945_is_init(priv)) {
Z
Zhu Yi 已提交
5786 5787 5788 5789
		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 |
5790 5791
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5792
			       test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5793 5794 5795
					STATUS_IN_SUSPEND |
				test_bit(STATUS_EXIT_PENDING, &priv->status) <<
					STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5796 5797 5798 5799 5800 5801 5802 5803 5804
		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 |
5805 5806
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5807 5808 5809
			test_bit(STATUS_IN_SUSPEND, &priv->status) <<
				STATUS_IN_SUSPEND |
			test_bit(STATUS_FW_ERROR, &priv->status) <<
5810 5811 5812
				STATUS_FW_ERROR |
			test_bit(STATUS_EXIT_PENDING, &priv->status) <<
				STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5813 5814

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5815
	iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Z
Zhu Yi 已提交
5816 5817
	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
5818 5819
	iwl3945_hw_txq_ctx_stop(priv);
	iwl3945_hw_rxq_stop(priv);
Z
Zhu Yi 已提交
5820 5821

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5822 5823
	if (!iwl3945_grab_nic_access(priv)) {
		iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
Z
Zhu Yi 已提交
5824
					 APMG_CLK_VAL_DMA_CLK_RQT);
C
Christoph Hellwig 已提交
5825
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5826 5827 5828 5829 5830
	}
	spin_unlock_irqrestore(&priv->lock, flags);

	udelay(5);

C
Christoph Hellwig 已提交
5831 5832 5833
	iwl3945_hw_nic_stop_master(priv);
	iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
	iwl3945_hw_nic_reset(priv);
Z
Zhu Yi 已提交
5834 5835

 exit:
5836
	memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Z
Zhu Yi 已提交
5837 5838 5839 5840 5841 5842

	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
5843
	iwl3945_clear_free_frames(priv);
Z
Zhu Yi 已提交
5844 5845
}

C
Christoph Hellwig 已提交
5846
static void iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5847 5848
{
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5849
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
5850
	mutex_unlock(&priv->mutex);
5851

C
Christoph Hellwig 已提交
5852
	iwl3945_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
5853 5854 5855 5856
}

#define MAX_HW_RESTARTS 5

C
Christoph Hellwig 已提交
5857
static int __iwl3945_up(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868
{
	int rc, i;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
		IWL_WARNING("Exit pending; will not bring the NIC up\n");
		return -EIO;
	}

	if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
		IWL_WARNING("Radio disabled by SW RF kill (module "
			    "parameter)\n");
5869 5870 5871
		return -ENODEV;
	}

5872
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
T
Tomas Winkler 已提交
5873
		IWL_ERROR("ucode not available for device bring up\n");
5874 5875 5876
		return -EIO;
	}

5877 5878 5879 5880 5881 5882 5883 5884 5885 5886
	/* If platform's RF_KILL switch is NOT set to KILL */
	if (iwl3945_read32(priv, CSR_GP_CNTRL) &
				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)) {
			IWL_WARNING("Radio disabled by HW RF Kill switch\n");
			return -ENODEV;
		}
Z
Zhu Yi 已提交
5887
	}
5888

C
Christoph Hellwig 已提交
5889
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
5890

C
Christoph Hellwig 已提交
5891
	rc = iwl3945_hw_nic_init(priv);
Z
Zhu Yi 已提交
5892 5893 5894 5895 5896 5897
	if (rc) {
		IWL_ERROR("Unable to int nic\n");
		return rc;
	}

	/* make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
5898 5899
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Z
Zhu Yi 已提交
5900 5901 5902
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
C
Christoph Hellwig 已提交
5903 5904
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
5905 5906

	/* really make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
5907 5908
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
5909 5910 5911 5912 5913

	/* 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,
5914
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
5915

5916 5917 5918 5919
	/* 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
5920 5921
	for (i = 0; i < MAX_HW_RESTARTS; i++) {

C
Christoph Hellwig 已提交
5922
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5923 5924 5925 5926

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
C
Christoph Hellwig 已提交
5927
		rc = iwl3945_load_bsm(priv);
Z
Zhu Yi 已提交
5928 5929 5930 5931 5932 5933 5934

		if (rc) {
			IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
			continue;
		}

		/* start card; "initialize" will load runtime ucode */
C
Christoph Hellwig 已提交
5935
		iwl3945_nic_start(priv);
Z
Zhu Yi 已提交
5936 5937 5938 5939 5940 5941 5942

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

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
C
Christoph Hellwig 已提交
5943
	__iwl3945_down(priv);
5944
	clear_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958

	/* tried to restart and config the device for as long as our
	 * patience could withstand */
	IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
	return -EIO;
}


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

C
Christoph Hellwig 已提交
5959
static void iwl3945_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5960
{
C
Christoph Hellwig 已提交
5961 5962
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, init_alive_start.work);
Z
Zhu Yi 已提交
5963 5964 5965 5966 5967

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5968
	iwl3945_init_alive_start(priv);
Z
Zhu Yi 已提交
5969 5970 5971
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5972
static void iwl3945_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5973
{
C
Christoph Hellwig 已提交
5974 5975
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, alive_start.work);
Z
Zhu Yi 已提交
5976 5977 5978 5979 5980

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5981
	iwl3945_alive_start(priv);
Z
Zhu Yi 已提交
5982 5983 5984
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5985
static void iwl3945_bg_rf_kill(struct work_struct *work)
Z
Zhu Yi 已提交
5986
{
C
Christoph Hellwig 已提交
5987
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
Z
Zhu Yi 已提交
5988 5989 5990 5991 5992 5993 5994 5995

	wake_up_interruptible(&priv->wait_command_queue);

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

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
5996
	if (!iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011
		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
			IWL_WARNING("Radio Frequency Kill Switch is On:\n"
				    "Kill switch must be turned off for "
				    "wireless networking to work.\n");
	}
6012

Z
Zhu Yi 已提交
6013
	mutex_unlock(&priv->mutex);
6014
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
6015 6016 6017 6018
}

#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)

C
Christoph Hellwig 已提交
6019
static void iwl3945_bg_scan_check(struct work_struct *data)
Z
Zhu Yi 已提交
6020
{
C
Christoph Hellwig 已提交
6021 6022
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, scan_check.work);
Z
Zhu Yi 已提交
6023 6024 6025 6026 6027 6028 6029 6030 6031 6032

	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));
6033

Z
Zhu Yi 已提交
6034
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
C
Christoph Hellwig 已提交
6035
			iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6036 6037 6038 6039
	}
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6040
static void iwl3945_bg_request_scan(struct work_struct *data)
Z
Zhu Yi 已提交
6041
{
C
Christoph Hellwig 已提交
6042 6043 6044
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, request_scan);
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
6045
		.id = REPLY_SCAN_CMD,
C
Christoph Hellwig 已提交
6046
		.len = sizeof(struct iwl3945_scan_cmd),
Z
Zhu Yi 已提交
6047 6048 6049
		.meta.flags = CMD_SIZE_HUGE,
	};
	int rc = 0;
C
Christoph Hellwig 已提交
6050
	struct iwl3945_scan_cmd *scan;
Z
Zhu Yi 已提交
6051
	struct ieee80211_conf *conf = NULL;
6052
	u8 n_probes = 2;
6053
	enum ieee80211_band band;
6054
	DECLARE_SSID_BUF(ssid);
Z
Zhu Yi 已提交
6055 6056 6057 6058 6059

	conf = ieee80211_get_hw_conf(priv->hw);

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
6060
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6061 6062 6063 6064
		IWL_WARNING("request scan called when driver not ready.\n");
		goto done;
	}

T
Tomas Winkler 已提交
6065
	/* Make sure the scan wasn't canceled before this queued work
Z
Zhu Yi 已提交
6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088
	 * 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;
	}

C
Christoph Hellwig 已提交
6089
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104
		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;
	}

	if (!priv->scan) {
C
Christoph Hellwig 已提交
6105
		priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Z
Zhu Yi 已提交
6106 6107 6108 6109 6110 6111 6112
				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
		if (!priv->scan) {
			rc = -ENOMEM;
			goto done;
		}
	}
	scan = priv->scan;
C
Christoph Hellwig 已提交
6113
	memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Z
Zhu Yi 已提交
6114 6115 6116 6117

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

C
Christoph Hellwig 已提交
6118
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131
		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;
6132
		scan->max_out_time = cpu_to_le32(200 * 1024);
Z
Zhu Yi 已提交
6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154
		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",
6155 6156
		     print_ssid(ssid, priv->direct_ssid,
				priv->direct_ssid_len));
Z
Zhu Yi 已提交
6157 6158 6159 6160
		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);
6161 6162
		n_probes++;
	} else
6163
		IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
Z
Zhu Yi 已提交
6164 6165 6166 6167

	/* 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
6168
		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
J
Johannes Berg 已提交
6169
			IWL_MAX_SCAN_SIZE - sizeof(*scan)));
Z
Zhu Yi 已提交
6170 6171 6172 6173 6174 6175
	scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
	scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
	scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;

	/* flags + rate selection */

6176
	if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
Z
Zhu Yi 已提交
6177 6178 6179
		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;
6180
		band = IEEE80211_BAND_2GHZ;
6181
	} else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
Z
Zhu Yi 已提交
6182 6183
		scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
		scan->good_CRC_th = IWL_GOOD_CRC_TH;
6184
		band = IEEE80211_BAND_5GHZ;
6185
	} else {
Z
Zhu Yi 已提交
6186 6187 6188 6189 6190 6191 6192
		IWL_WARNING("Invalid scan band count\n");
		goto done;
	}

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

6193
	if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
Z
Zhu Yi 已提交
6194 6195
		scan->filter_flags = RXON_FILTER_PROMISC_MSK;

6196 6197 6198 6199
	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
6200

6201 6202 6203 6204 6205
	if (scan->channel_count == 0) {
		IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
		goto done;
	}

Z
Zhu Yi 已提交
6206
	cmd.len += le16_to_cpu(scan->tx_cmd.len) +
C
Christoph Hellwig 已提交
6207
	    scan->channel_count * sizeof(struct iwl3945_scan_channel);
Z
Zhu Yi 已提交
6208 6209 6210 6211
	cmd.data = scan;
	scan->len = cpu_to_le16(cmd.len);

	set_bit(STATUS_SCAN_HW, &priv->status);
C
Christoph Hellwig 已提交
6212
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
6213 6214 6215 6216 6217 6218 6219 6220 6221 6222
	if (rc)
		goto done;

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

	mutex_unlock(&priv->mutex);
	return;

 done:
6223 6224 6225 6226 6227 6228 6229 6230
	/* 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);

6231
	/* inform mac80211 scan aborted */
Z
Zhu Yi 已提交
6232 6233 6234 6235
	queue_work(priv->workqueue, &priv->scan_completed);
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6236
static void iwl3945_bg_up(struct work_struct *data)
Z
Zhu Yi 已提交
6237
{
C
Christoph Hellwig 已提交
6238
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
Z
Zhu Yi 已提交
6239 6240 6241 6242 6243

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6244
	__iwl3945_up(priv);
Z
Zhu Yi 已提交
6245
	mutex_unlock(&priv->mutex);
6246
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
6247 6248
}

C
Christoph Hellwig 已提交
6249
static void iwl3945_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
6250
{
C
Christoph Hellwig 已提交
6251
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
Z
Zhu Yi 已提交
6252 6253 6254 6255

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

C
Christoph Hellwig 已提交
6256
	iwl3945_down(priv);
Z
Zhu Yi 已提交
6257 6258 6259
	queue_work(priv->workqueue, &priv->up);
}

C
Christoph Hellwig 已提交
6260
static void iwl3945_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
6261
{
C
Christoph Hellwig 已提交
6262 6263
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, rx_replenish);
Z
Zhu Yi 已提交
6264 6265 6266 6267 6268

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6269
	iwl3945_rx_replenish(priv);
Z
Zhu Yi 已提交
6270 6271 6272
	mutex_unlock(&priv->mutex);
}

6273 6274
#define IWL_DELAY_NEXT_SCAN (HZ*2)

6275
static void iwl3945_post_associate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6276 6277 6278 6279
{
	int rc = 0;
	struct ieee80211_conf *conf = NULL;

6280
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
6281
		IWL_ERROR("%s Should not be called in AP mode\n", __func__);
Z
Zhu Yi 已提交
6282 6283 6284 6285
		return;
	}


J
Johannes Berg 已提交
6286 6287
	IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
			priv->assoc_id, priv->active_rxon.bssid_addr);
Z
Zhu Yi 已提交
6288 6289 6290 6291

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

A
Abhijeet Kolekar 已提交
6292
	if (!priv->vif || !priv->is_open)
6293
		return;
A
Abhijeet Kolekar 已提交
6294

C
Christoph Hellwig 已提交
6295
	iwl3945_scan_cancel_timeout(priv, 200);
6296

Z
Zhu Yi 已提交
6297 6298 6299
	conf = ieee80211_get_hw_conf(priv->hw);

	priv->staging_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
	memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
C
Christoph Hellwig 已提交
6303 6304
	iwl3945_setup_rxon_timing(priv);
	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327
			      sizeof(priv->rxon_timing), &priv->rxon_timing);
	if (rc)
		IWL_WARNING("REPLY_RXON_TIMING failed - "
			    "Attempting to continue.\n");

	priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;

	priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);

	IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
			priv->assoc_id, priv->beacon_int);

	if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
		priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
	else
		priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;

	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

6328
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
6329 6330 6331 6332
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

	}

C
Christoph Hellwig 已提交
6333
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6334 6335

	switch (priv->iw_mode) {
6336
	case NL80211_IFTYPE_STATION:
C
Christoph Hellwig 已提交
6337
		iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Z
Zhu Yi 已提交
6338 6339
		break;

6340
	case NL80211_IFTYPE_ADHOC:
Z
Zhu Yi 已提交
6341

6342
		priv->assoc_id = 1;
C
Christoph Hellwig 已提交
6343
		iwl3945_add_station(priv, priv->bssid, 0, 0);
Z
Zhu Yi 已提交
6344
		iwl3945_sync_sta(priv, IWL_STA_ID,
6345
				 (priv->band == IEEE80211_BAND_5GHZ) ?
Z
Zhu Yi 已提交
6346 6347
				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
				 CMD_ASYNC);
C
Christoph Hellwig 已提交
6348 6349
		iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
		iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6350 6351 6352 6353 6354

		break;

	default:
		 IWL_ERROR("%s Should not be called in %d mode\n",
6355
			   __func__, priv->iw_mode);
Z
Zhu Yi 已提交
6356 6357 6358
		break;
	}

C
Christoph Hellwig 已提交
6359
	iwl3945_activate_qos(priv, 0);
6360

6361 6362
	/* we have just associated, don't start scan too early */
	priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6363 6364
}

C
Christoph Hellwig 已提交
6365
static void iwl3945_bg_abort_scan(struct work_struct *work)
Z
Zhu Yi 已提交
6366
{
C
Christoph Hellwig 已提交
6367
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
Z
Zhu Yi 已提交
6368

C
Christoph Hellwig 已提交
6369
	if (!iwl3945_is_ready(priv))
Z
Zhu Yi 已提交
6370 6371 6372 6373 6374
		return;

	mutex_lock(&priv->mutex);

	set_bit(STATUS_SCAN_ABORTING, &priv->status);
C
Christoph Hellwig 已提交
6375
	iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6376 6377 6378 6379

	mutex_unlock(&priv->mutex);
}

6380
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6381

C
Christoph Hellwig 已提交
6382
static void iwl3945_bg_scan_completed(struct work_struct *work)
Z
Zhu Yi 已提交
6383
{
C
Christoph Hellwig 已提交
6384 6385
	struct iwl3945_priv *priv =
	    container_of(work, struct iwl3945_priv, scan_completed);
Z
Zhu Yi 已提交
6386 6387 6388 6389 6390 6391

	IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");

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

6392
	if (test_bit(STATUS_CONF_PENDING, &priv->status))
6393
		iwl3945_mac_config(priv->hw, 0);
6394

Z
Zhu Yi 已提交
6395 6396 6397 6398 6399
	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
6400
	iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
6401 6402 6403 6404 6405 6406 6407 6408 6409
	mutex_unlock(&priv->mutex);
}

/*****************************************************************************
 *
 * mac80211 entry point functions
 *
 *****************************************************************************/

6410 6411
#define UCODE_READY_TIMEOUT	(2 * HZ)

C
Christoph Hellwig 已提交
6412
static int iwl3945_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6413
{
C
Christoph Hellwig 已提交
6414
	struct iwl3945_priv *priv = hw->priv;
6415
	int ret;
Z
Zhu Yi 已提交
6416 6417 6418

	IWL_DEBUG_MAC80211("enter\n");

6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432
	if (pci_enable_device(priv->pci_dev)) {
		IWL_ERROR("Fail to pci_enable_device\n");
		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) {
		IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
		goto out_disable_msi;
	}

Z
Zhu Yi 已提交
6433 6434 6435
	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);

6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447
	memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
	/* 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) {
			IWL_ERROR("Could not read microcode: %d\n", ret);
			mutex_unlock(&priv->mutex);
			goto out_release_irq;
		}
	}
Z
Zhu Yi 已提交
6448

6449
	ret = __iwl3945_up(priv);
Z
Zhu Yi 已提交
6450 6451

	mutex_unlock(&priv->mutex);
6452

6453 6454
	iwl3945_rfkill_set_hw_state(priv);

6455 6456 6457 6458 6459 6460 6461 6462
	if (ret)
		goto out_release_irq;

	IWL_DEBUG_INFO("Start UP work.\n");

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

6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476
	/* 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)) {
			IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
				  jiffies_to_msecs(UCODE_READY_TIMEOUT));
			ret = -ETIMEDOUT;
			goto out_release_irq;
		}
	}

6477
	priv->is_open = 1;
Z
Zhu Yi 已提交
6478 6479
	IWL_DEBUG_MAC80211("leave\n");
	return 0;
6480 6481 6482 6483 6484

out_release_irq:
	free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
	pci_disable_msi(priv->pci_dev);
6485 6486 6487
	pci_disable_device(priv->pci_dev);
	priv->is_open = 0;
	IWL_DEBUG_MAC80211("leave - failed\n");
6488
	return ret;
Z
Zhu Yi 已提交
6489 6490
}

C
Christoph Hellwig 已提交
6491
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6492
{
C
Christoph Hellwig 已提交
6493
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6494 6495

	IWL_DEBUG_MAC80211("enter\n");
6496

6497 6498 6499 6500 6501
	if (!priv->is_open) {
		IWL_DEBUG_MAC80211("leave - skip\n");
		return;
	}

Z
Zhu Yi 已提交
6502
	priv->is_open = 0;
6503 6504

	if (iwl3945_is_ready_rf(priv)) {
6505 6506 6507
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
6508 6509
		mutex_lock(&priv->mutex);
		iwl3945_scan_cancel_timeout(priv, 100);
6510 6511 6512
		mutex_unlock(&priv->mutex);
	}

6513 6514 6515 6516 6517 6518 6519
	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);
6520

Z
Zhu Yi 已提交
6521 6522 6523
	IWL_DEBUG_MAC80211("leave\n");
}

6524
static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
6525
{
C
Christoph Hellwig 已提交
6526
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6527 6528 6529 6530

	IWL_DEBUG_MAC80211("enter\n");

	IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6531
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
6532

6533
	if (iwl3945_tx_skb(priv, skb))
Z
Zhu Yi 已提交
6534 6535 6536
		dev_kfree_skb_any(skb);

	IWL_DEBUG_MAC80211("leave\n");
6537
	return NETDEV_TX_OK;
Z
Zhu Yi 已提交
6538 6539
}

C
Christoph Hellwig 已提交
6540
static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6541 6542
				 struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6543
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6544 6545
	unsigned long flags;

6546
	IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Z
Zhu Yi 已提交
6547

6548 6549
	if (priv->vif) {
		IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6550
		return -EOPNOTSUPP;
Z
Zhu Yi 已提交
6551 6552 6553
	}

	spin_lock_irqsave(&priv->lock, flags);
6554
	priv->vif = conf->vif;
6555
	priv->iw_mode = conf->type;
Z
Zhu Yi 已提交
6556 6557 6558 6559

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6560 6561

	if (conf->mac_addr) {
J
Johannes Berg 已提交
6562
		IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6563 6564 6565
		memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
	}

6566 6567
	if (iwl3945_is_ready(priv))
		iwl3945_set_mode(priv, conf->type);
Z
Zhu Yi 已提交
6568 6569 6570

	mutex_unlock(&priv->mutex);

6571
	IWL_DEBUG_MAC80211("leave\n");
Z
Zhu Yi 已提交
6572 6573 6574 6575
	return 0;
}

/**
C
Christoph Hellwig 已提交
6576
 * iwl3945_mac_config - mac80211 config callback
Z
Zhu Yi 已提交
6577 6578 6579 6580 6581
 *
 * 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.
 */
6582
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
Z
Zhu Yi 已提交
6583
{
C
Christoph Hellwig 已提交
6584 6585
	struct iwl3945_priv *priv = hw->priv;
	const struct iwl3945_channel_info *ch_info;
6586
	struct ieee80211_conf *conf = &hw->conf;
Z
Zhu Yi 已提交
6587
	unsigned long flags;
6588
	int ret = 0;
Z
Zhu Yi 已提交
6589 6590

	mutex_lock(&priv->mutex);
6591
	IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Z
Zhu Yi 已提交
6592

C
Christoph Hellwig 已提交
6593
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6594
		IWL_DEBUG_MAC80211("leave - not ready\n");
6595 6596
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6597 6598
	}

C
Christoph Hellwig 已提交
6599
	if (unlikely(!iwl3945_param_disable_hw_scan &&
Z
Zhu Yi 已提交
6600
		     test_bit(STATUS_SCANNING, &priv->status))) {
6601 6602
		IWL_DEBUG_MAC80211("leave - scanning\n");
		set_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6603
		mutex_unlock(&priv->mutex);
6604
		return 0;
Z
Zhu Yi 已提交
6605 6606 6607 6608
	}

	spin_lock_irqsave(&priv->lock, flags);

6609 6610
	ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
					   conf->channel->hw_value);
Z
Zhu Yi 已提交
6611
	if (!is_channel_valid(ch_info)) {
6612
		IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6613
			       conf->channel->hw_value, conf->channel->band);
Z
Zhu Yi 已提交
6614 6615
		IWL_DEBUG_MAC80211("leave - invalid channel\n");
		spin_unlock_irqrestore(&priv->lock, flags);
6616 6617
		ret = -EINVAL;
		goto out;
Z
Zhu Yi 已提交
6618 6619
	}

6620
	iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Z
Zhu Yi 已提交
6621

6622
	iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Z
Zhu Yi 已提交
6623 6624 6625 6626

	/* 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
6627
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6628 6629 6630 6631 6632

	spin_unlock_irqrestore(&priv->lock, flags);

#ifdef IEEE80211_CONF_CHANNEL_SWITCH
	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
C
Christoph Hellwig 已提交
6633
		iwl3945_hw_channel_switch(priv, conf->channel);
6634
		goto out;
Z
Zhu Yi 已提交
6635 6636 6637
	}
#endif

C
Christoph Hellwig 已提交
6638
	iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Z
Zhu Yi 已提交
6639 6640 6641

	if (!conf->radio_enabled) {
		IWL_DEBUG_MAC80211("leave - radio disabled\n");
6642
		goto out;
Z
Zhu Yi 已提交
6643 6644
	}

C
Christoph Hellwig 已提交
6645
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6646
		IWL_DEBUG_MAC80211("leave - RF kill\n");
6647 6648
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6649 6650
	}

C
Christoph Hellwig 已提交
6651
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6652 6653 6654

	if (memcmp(&priv->active_rxon,
		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
C
Christoph Hellwig 已提交
6655
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6656 6657 6658 6659 6660
	else
		IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");

	IWL_DEBUG_MAC80211("leave\n");

6661
out:
6662
	clear_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6663
	mutex_unlock(&priv->mutex);
6664
	return ret;
Z
Zhu Yi 已提交
6665 6666
}

C
Christoph Hellwig 已提交
6667
static void iwl3945_config_ap(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6668 6669 6670
{
	int rc = 0;

6671
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
6672 6673 6674
		return;

	/* The following should be done only at AP bring up */
6675
	if (!(iwl3945_is_associated(priv))) {
Z
Zhu Yi 已提交
6676 6677 6678

		/* RXON - unassoc (to set timing command) */
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6679
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6680 6681

		/* RXON Timing */
6682
		memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
C
Christoph Hellwig 已提交
6683 6684
		iwl3945_setup_rxon_timing(priv);
		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707
				sizeof(priv->rxon_timing), &priv->rxon_timing);
		if (rc)
			IWL_WARNING("REPLY_RXON_TIMING failed - "
					"Attempting to continue.\n");

		/* FIXME: what should be the assoc_id for AP? */
		priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
			priv->staging_rxon.flags |=
				RXON_FLG_SHORT_PREAMBLE_MSK;
		else
			priv->staging_rxon.flags &=
				~RXON_FLG_SHORT_PREAMBLE_MSK;

		if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
			if (priv->assoc_capability &
				WLAN_CAPABILITY_SHORT_SLOT_TIME)
				priv->staging_rxon.flags |=
					RXON_FLG_SHORT_SLOT_MSK;
			else
				priv->staging_rxon.flags &=
					~RXON_FLG_SHORT_SLOT_MSK;

6708
			if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
6709 6710 6711 6712 6713
				priv->staging_rxon.flags &=
					~RXON_FLG_SHORT_SLOT_MSK;
		}
		/* restore RXON assoc */
		priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6714 6715
		iwl3945_commit_rxon(priv);
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6716
	}
C
Christoph Hellwig 已提交
6717
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6718 6719 6720 6721 6722 6723

	/* 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... */
}

6724 6725
static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
Z
Zhu Yi 已提交
6726 6727
				    struct ieee80211_if_conf *conf)
{
C
Christoph Hellwig 已提交
6728
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6729 6730 6731 6732 6733
	int rc;

	if (conf == NULL)
		return -EIO;

6734 6735 6736 6737 6738
	if (priv->vif != vif) {
		IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
		return 0;
	}

6739
	/* handle this temporarily here */
6740
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6741 6742 6743 6744
	    conf->changed & IEEE80211_IFCC_BEACON) {
		struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
		if (!beacon)
			return -ENOMEM;
6745
		mutex_lock(&priv->mutex);
6746
		rc = iwl3945_mac_beacon_update(hw, beacon);
6747
		mutex_unlock(&priv->mutex);
6748 6749 6750 6751
		if (rc)
			return rc;
	}

6752 6753 6754
	if (!iwl3945_is_alive(priv))
		return -EAGAIN;

Z
Zhu Yi 已提交
6755 6756 6757
	mutex_lock(&priv->mutex);

	if (conf->bssid)
J
Johannes Berg 已提交
6758
		IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
Z
Zhu Yi 已提交
6759

6760 6761 6762
/*
 * very dubious code was here; the probe filtering flag is never set:
 *
Z
Zhu Yi 已提交
6763 6764
	if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
	    !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6765
 */
Z
Zhu Yi 已提交
6766

6767
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
6768 6769 6770
		if (!conf->bssid) {
			conf->bssid = priv->mac_addr;
			memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
J
Johannes Berg 已提交
6771 6772
			IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
					   conf->bssid);
Z
Zhu Yi 已提交
6773 6774 6775 6776
		}
		if (priv->ibss_beacon)
			dev_kfree_skb(priv->ibss_beacon);

6777
		priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
Z
Zhu Yi 已提交
6778 6779
	}

6780 6781 6782
	if (iwl3945_is_rfkill(priv))
		goto done;

Z
Zhu Yi 已提交
6783 6784 6785 6786
	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
6787
		if (iwl3945_scan_cancel_timeout(priv, 100)) {
Z
Zhu Yi 已提交
6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801
			IWL_WARNING("Aborted scan still in progress "
				    "after 100ms\n");
			IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
			mutex_unlock(&priv->mutex);
			return -EAGAIN;
		}
		memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);

		/* 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);

6802
		if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
6803
			iwl3945_config_ap(priv);
Z
Zhu Yi 已提交
6804
		else {
C
Christoph Hellwig 已提交
6805
			rc = iwl3945_commit_rxon(priv);
6806
			if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
C
Christoph Hellwig 已提交
6807
				iwl3945_add_station(priv,
6808
					priv->active_rxon.bssid_addr, 1, 0);
Z
Zhu Yi 已提交
6809 6810 6811
		}

	} else {
C
Christoph Hellwig 已提交
6812
		iwl3945_scan_cancel_timeout(priv, 100);
Z
Zhu Yi 已提交
6813
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6814
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6815 6816
	}

6817
 done:
Z
Zhu Yi 已提交
6818 6819 6820 6821 6822 6823
	IWL_DEBUG_MAC80211("leave\n");
	mutex_unlock(&priv->mutex);

	return 0;
}

C
Christoph Hellwig 已提交
6824
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6825 6826 6827 6828
				 unsigned int changed_flags,
				 unsigned int *total_flags,
				 int mc_count, struct dev_addr_list *mc_list)
{
6829
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu, Yi 已提交
6830
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;
6831

Z
Zhu, Yi 已提交
6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851
	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;
6852
	}
Z
Zhu, Yi 已提交
6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866
	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 |
6867
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6868 6869
}

C
Christoph Hellwig 已提交
6870
static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6871 6872
				     struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6873
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6874 6875 6876 6877

	IWL_DEBUG_MAC80211("enter\n");

	mutex_lock(&priv->mutex);
6878

6879 6880 6881 6882 6883
	if (iwl3945_is_ready_rf(priv)) {
		iwl3945_scan_cancel_timeout(priv, 100);
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
		iwl3945_commit_rxon(priv);
	}
6884 6885
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
Z
Zhu Yi 已提交
6886 6887 6888 6889 6890 6891 6892
		memset(priv->bssid, 0, ETH_ALEN);
	}
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
}

6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929
#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)
{
	struct iwl3945_priv *priv = hw->priv;

	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)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
	}

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

	if (changes & BSS_CHANGED_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;
6930
			priv->timestamp = bss_conf->timestamp;
6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947
			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
6948
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Z
Zhu Yi 已提交
6949 6950 6951
{
	int rc = 0;
	unsigned long flags;
C
Christoph Hellwig 已提交
6952
	struct iwl3945_priv *priv = hw->priv;
6953
	DECLARE_SSID_BUF(ssid_buf);
Z
Zhu Yi 已提交
6954 6955 6956

	IWL_DEBUG_MAC80211("enter\n");

6957
	mutex_lock(&priv->mutex);
Z
Zhu Yi 已提交
6958 6959
	spin_lock_irqsave(&priv->lock, flags);

C
Christoph Hellwig 已提交
6960
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6961 6962 6963 6964 6965
		rc = -EIO;
		IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
		goto out_unlock;
	}

6966 6967 6968 6969 6970 6971
	/* 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;
	}
6972 6973 6974 6975
	/* 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
6976 6977 6978 6979
		rc = -EAGAIN;
		goto out_unlock;
	}
	if (len) {
6980
		IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6981
			       print_ssid(ssid_buf, ssid, len), (int)len);
Z
Zhu Yi 已提交
6982 6983 6984 6985 6986

		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);
6987 6988
	} else
		priv->one_direct_scan = 0;
Z
Zhu Yi 已提交
6989

C
Christoph Hellwig 已提交
6990
	rc = iwl3945_scan_initiate(priv);
Z
Zhu Yi 已提交
6991 6992 6993 6994 6995

	IWL_DEBUG_MAC80211("leave\n");

out_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
6996
	mutex_unlock(&priv->mutex);
Z
Zhu Yi 已提交
6997 6998 6999 7000

	return rc;
}

C
Christoph Hellwig 已提交
7001
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Z
Zhu Yi 已提交
7002 7003 7004
			   const u8 *local_addr, const u8 *addr,
			   struct ieee80211_key_conf *key)
{
C
Christoph Hellwig 已提交
7005
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7006 7007 7008 7009 7010
	int rc = 0;
	u8 sta_id;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7011
	if (!iwl3945_param_hwcrypto) {
Z
Zhu Yi 已提交
7012 7013 7014 7015 7016 7017 7018 7019
		IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
		return -EOPNOTSUPP;
	}

	if (is_zero_ether_addr(addr))
		/* only support pairwise keys */
		return -EOPNOTSUPP;

C
Christoph Hellwig 已提交
7020
	sta_id = iwl3945_hw_find_station(priv, addr);
Z
Zhu Yi 已提交
7021
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
7022 7023
		IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
				   addr);
Z
Zhu Yi 已提交
7024 7025 7026 7027 7028
		return -EINVAL;
	}

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
7029
	iwl3945_scan_cancel_timeout(priv, 100);
7030

Z
Zhu Yi 已提交
7031 7032
	switch (cmd) {
	case  SET_KEY:
C
Christoph Hellwig 已提交
7033
		rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Z
Zhu Yi 已提交
7034
		if (!rc) {
C
Christoph Hellwig 已提交
7035 7036
			iwl3945_set_rxon_hwcrypto(priv, 1);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7037 7038 7039 7040 7041 7042
			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
7043
		rc = iwl3945_clear_sta_key_info(priv, sta_id);
Z
Zhu Yi 已提交
7044
		if (!rc) {
C
Christoph Hellwig 已提交
7045 7046
			iwl3945_set_rxon_hwcrypto(priv, 0);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059
			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
7060
static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
Z
Zhu Yi 已提交
7061 7062
			   const struct ieee80211_tx_queue_params *params)
{
C
Christoph Hellwig 已提交
7063
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7064 7065 7066 7067 7068
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7069
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086
		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 =
7087
			cpu_to_le16((params->txop * 32));
Z
Zhu Yi 已提交
7088 7089 7090 7091 7092 7093 7094

	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);
7095
	if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
7096 7097 7098
		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
7099 7100 7101 7102 7103 7104 7105

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
	return 0;
}

C
Christoph Hellwig 已提交
7106
static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7107 7108
				struct ieee80211_tx_queue_stats *stats)
{
C
Christoph Hellwig 已提交
7109
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7110
	int i, avail;
C
Christoph Hellwig 已提交
7111 7112
	struct iwl3945_tx_queue *txq;
	struct iwl3945_queue *q;
Z
Zhu Yi 已提交
7113 7114 7115 7116
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7117
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7118 7119 7120 7121 7122 7123 7124 7125 7126
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

	spin_lock_irqsave(&priv->lock, flags);

	for (i = 0; i < AC_NUM; i++) {
		txq = &priv->txq[i];
		q = &txq->q;
C
Christoph Hellwig 已提交
7127
		avail = iwl3945_queue_space(q);
Z
Zhu Yi 已提交
7128

7129 7130 7131
		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
7132 7133 7134 7135 7136 7137 7138 7139 7140

	}
	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7141
static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7142 7143 7144 7145 7146
			     struct ieee80211_low_level_stats *stats)
{
	return 0;
}

C
Christoph Hellwig 已提交
7147
static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7148
{
C
Christoph Hellwig 已提交
7149
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7150 7151 7152 7153 7154
	unsigned long flags;

	mutex_lock(&priv->mutex);
	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7155
	iwl3945_reset_qos(priv);
7156

Z
Zhu Yi 已提交
7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167 7168
	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;
7169
	priv->timestamp = 0;
7170
	if ((priv->iw_mode == NL80211_IFTYPE_STATION))
Z
Zhu Yi 已提交
7171 7172 7173 7174
		priv->beacon_int = 0;

	spin_unlock_irqrestore(&priv->lock, flags);

7175 7176 7177 7178 7179 7180
	if (!iwl3945_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211("leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

7181 7182 7183
	/* we are restarting association process
	 * clear RXON_FILTER_ASSOC_MSK bit
	*/
7184
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
C
Christoph Hellwig 已提交
7185
		iwl3945_scan_cancel_timeout(priv, 100);
7186
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
7187
		iwl3945_commit_rxon(priv);
7188 7189
	}

Z
Zhu Yi 已提交
7190
	/* Per mac80211.h: This is only used in IBSS mode... */
7191
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7192

Z
Zhu Yi 已提交
7193 7194 7195 7196 7197
		IWL_DEBUG_MAC80211("leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

C
Christoph Hellwig 已提交
7198
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
7199 7200 7201 7202 7203 7204 7205

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");

}

7206
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
7207
{
C
Christoph Hellwig 已提交
7208
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7209 7210 7211 7212
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7213
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7214 7215 7216 7217
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

7218
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
Z
Zhu Yi 已提交
7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234
		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);

C
Christoph Hellwig 已提交
7235
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7236

7237
	iwl3945_post_associate(priv);
Z
Zhu Yi 已提交
7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248


	return 0;
}

/*****************************************************************************
 *
 * sysfs attributes
 *
 *****************************************************************************/

7249
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
7250 7251 7252 7253 7254 7255 7256 7257

/*
 * 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.
 */
7258 7259
static ssize_t show_debug_level(struct device *d,
				struct device_attribute *attr, char *buf)
Z
Zhu Yi 已提交
7260
{
7261 7262 7263
	struct iwl3945_priv *priv = d->driver_data;

	return sprintf(buf, "0x%08X\n", priv->debug_level);
Z
Zhu Yi 已提交
7264
}
7265 7266
static ssize_t store_debug_level(struct device *d,
				struct device_attribute *attr,
Z
Zhu Yi 已提交
7267 7268
				 const char *buf, size_t count)
{
7269 7270 7271
	struct iwl3945_priv *priv = d->driver_data;
	unsigned long val;
	int ret;
Z
Zhu Yi 已提交
7272

7273 7274
	ret = strict_strtoul(buf, 0, &val);
	if (ret)
Z
Zhu Yi 已提交
7275 7276 7277
		printk(KERN_INFO DRV_NAME
		       ": %s is not in hex or decimal form.\n", buf);
	else
7278
		priv->debug_level = val;
Z
Zhu Yi 已提交
7279 7280 7281 7282

	return strnlen(buf, count);
}

7283 7284
static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
			show_debug_level, store_debug_level);
Z
Zhu Yi 已提交
7285

7286
#endif /* CONFIG_IWL3945_DEBUG */
Z
Zhu Yi 已提交
7287 7288 7289 7290

static ssize_t show_temperature(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7291
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7292

C
Christoph Hellwig 已提交
7293
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7294 7295
		return -EAGAIN;

C
Christoph Hellwig 已提交
7296
	return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Z
Zhu Yi 已提交
7297 7298 7299 7300 7301 7302 7303
}

static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);

static ssize_t show_tx_power(struct device *d,
			     struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7304
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7305 7306 7307 7308 7309 7310 7311
	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)
{
C
Christoph Hellwig 已提交
7312
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7313 7314 7315 7316 7317 7318 7319 7320
	char *p = (char *)buf;
	u32 val;

	val = simple_strtoul(p, &p, 10);
	if (p == buf)
		printk(KERN_INFO DRV_NAME
		       ": %s is not in decimal form.\n", buf);
	else
C
Christoph Hellwig 已提交
7321
		iwl3945_hw_reg_set_txpower(priv, val);
Z
Zhu Yi 已提交
7322 7323 7324 7325 7326 7327 7328 7329 7330

	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)
{
C
Christoph Hellwig 已提交
7331
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7332 7333 7334 7335 7336 7337 7338 7339

	return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
}

static ssize_t store_flags(struct device *d,
			   struct device_attribute *attr,
			   const char *buf, size_t count)
{
C
Christoph Hellwig 已提交
7340
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7341 7342 7343 7344 7345
	u32 flags = simple_strtoul(buf, NULL, 0);

	mutex_lock(&priv->mutex);
	if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
		/* Cancel any currently running scans... */
C
Christoph Hellwig 已提交
7346
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7347 7348 7349 7350 7351
			IWL_WARNING("Could not cancel scan.\n");
		else {
			IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
				       flags);
			priv->staging_rxon.flags = cpu_to_le32(flags);
C
Christoph Hellwig 已提交
7352
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364
		}
	}
	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)
{
C
Christoph Hellwig 已提交
7365
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7366 7367 7368 7369 7370 7371 7372 7373 7374

	return sprintf(buf, "0x%04X\n",
		le32_to_cpu(priv->active_rxon.filter_flags));
}

static ssize_t store_filter_flags(struct device *d,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
C
Christoph Hellwig 已提交
7375
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7376 7377 7378 7379 7380
	u32 filter_flags = simple_strtoul(buf, NULL, 0);

	mutex_lock(&priv->mutex);
	if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
		/* Cancel any currently running scans... */
C
Christoph Hellwig 已提交
7381
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7382 7383 7384 7385 7386 7387
			IWL_WARNING("Could not cancel scan.\n");
		else {
			IWL_DEBUG_INFO("Committing rxon.filter_flags = "
				       "0x%04X\n", filter_flags);
			priv->staging_rxon.filter_flags =
				cpu_to_le32(filter_flags);
C
Christoph Hellwig 已提交
7388
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7389 7390 7391 7392 7393 7394 7395 7396 7397 7398
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
		   store_filter_flags);

7399
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7400 7401 7402 7403

static ssize_t show_measurement(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7404
	struct iwl3945_priv *priv = dev_get_drvdata(d);
7405
	struct iwl_spectrum_notification measure_report;
Z
Zhu Yi 已提交
7406
	u32 size = sizeof(measure_report), len = 0, ofs = 0;
7407
	u8 *data = (u8 *)&measure_report;
Z
Zhu Yi 已提交
7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436
	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)
{
C
Christoph Hellwig 已提交
7437
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462
	struct ieee80211_measurement_params params = {
		.channel = le16_to_cpu(priv->active_rxon.channel),
		.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
7463
	iwl3945_get_measurement(priv, &params, type);
Z
Zhu Yi 已提交
7464 7465 7466 7467 7468 7469

	return count;
}

static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
		   show_measurement, store_measurement);
7470
#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Z
Zhu Yi 已提交
7471 7472 7473 7474 7475

static ssize_t store_retry_rate(struct device *d,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
C
Christoph Hellwig 已提交
7476
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487

	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)
{
C
Christoph Hellwig 已提交
7488
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7489 7490 7491 7492 7493 7494 7495 7496 7497 7498
	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)
{
C
Christoph Hellwig 已提交
7499
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7500 7501 7502 7503 7504 7505
	int rc;
	int mode;

	mode = simple_strtoul(buf, NULL, 0);
	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
7506
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
7507 7508 7509 7510 7511 7512 7513 7514 7515 7516
		rc = -EAGAIN;
		goto out;
	}

	if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
		mode = IWL_POWER_AC;
	else
		mode |= IWL_POWER_ENABLED;

	if (mode != priv->power_mode) {
C
Christoph Hellwig 已提交
7517
		rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Z
Zhu Yi 已提交
7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552
		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)
{
C
Christoph Hellwig 已提交
7553
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577
	int level = IWL_POWER_LEVEL(priv->power_mode);
	char *p = buf;

	p += sprintf(p, "%d ", level);
	switch (level) {
	case IWL_POWER_MODE_CAM:
	case IWL_POWER_AC:
		p += sprintf(p, "(AC)");
		break;
	case IWL_POWER_BATTERY:
		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");

7578
	return p - buf + 1;
Z
Zhu Yi 已提交
7579 7580 7581 7582 7583 7584 7585 7586 7587

}

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)
{
7588 7589
	/* all this shit doesn't belong into sysfs anyway */
	return 0;
Z
Zhu Yi 已提交
7590 7591 7592 7593 7594 7595 7596
}

static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);

static ssize_t show_statistics(struct device *d,
			       struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7597 7598
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	u32 size = sizeof(struct iwl3945_notif_statistics);
Z
Zhu Yi 已提交
7599
	u32 len = 0, ofs = 0;
7600
	u8 *data = (u8 *)&priv->statistics;
Z
Zhu Yi 已提交
7601 7602
	int rc = 0;

C
Christoph Hellwig 已提交
7603
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7604 7605 7606
		return -EAGAIN;

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7607
	rc = iwl3945_send_statistics_request(priv);
Z
Zhu Yi 已提交
7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634
	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)
{
C
Christoph Hellwig 已提交
7635
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7636

C
Christoph Hellwig 已提交
7637
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7638 7639 7640 7641 7642 7643 7644 7645 7646 7647
		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;
C
Christoph Hellwig 已提交
7648
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659

	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
7660
		priv->antenna = (enum iwl3945_antenna)ant;
Z
Zhu Yi 已提交
7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672
	} 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)
{
C
Christoph Hellwig 已提交
7673 7674
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687
		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')
C
Christoph Hellwig 已提交
7688
		iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701

	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')
C
Christoph Hellwig 已提交
7702
		iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7703 7704 7705 7706 7707 7708 7709 7710

	return strnlen(buf, count);
}

static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);

/*****************************************************************************
 *
T
Tomas Winkler 已提交
7711
 * driver setup and tear down
Z
Zhu Yi 已提交
7712 7713 7714
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
7715
static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7716 7717 7718 7719 7720
{
	priv->workqueue = create_workqueue(DRV_NAME);

	init_waitqueue_head(&priv->wait_command_queue);

C
Christoph Hellwig 已提交
7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733
	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
7734 7735

	tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
C
Christoph Hellwig 已提交
7736
		     iwl3945_irq_tasklet, (unsigned long)priv);
Z
Zhu Yi 已提交
7737 7738
}

C
Christoph Hellwig 已提交
7739
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7740
{
C
Christoph Hellwig 已提交
7741
	iwl3945_hw_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
7742

7743
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
7744 7745 7746 7747 7748
	cancel_delayed_work(&priv->scan_check);
	cancel_delayed_work(&priv->alive_start);
	cancel_work_sync(&priv->beacon_update);
}

C
Christoph Hellwig 已提交
7749
static struct attribute *iwl3945_sysfs_entries[] = {
Z
Zhu Yi 已提交
7750 7751 7752 7753 7754 7755
	&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,
7756
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7757 7758 7759 7760 7761 7762 7763 7764
	&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,
7765 7766 7767
#ifdef CONFIG_IWL3945_DEBUG
	&dev_attr_debug_level.attr,
#endif
Z
Zhu Yi 已提交
7768 7769 7770
	NULL
};

C
Christoph Hellwig 已提交
7771
static struct attribute_group iwl3945_attribute_group = {
Z
Zhu Yi 已提交
7772
	.name = NULL,		/* put in device directory */
C
Christoph Hellwig 已提交
7773
	.attrs = iwl3945_sysfs_entries,
Z
Zhu Yi 已提交
7774 7775
};

C
Christoph Hellwig 已提交
7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789
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_stats = iwl3945_mac_get_stats,
	.get_tx_stats = iwl3945_mac_get_tx_stats,
	.conf_tx = iwl3945_mac_conf_tx,
	.reset_tsf = iwl3945_mac_reset_tsf,
7790
	.bss_info_changed = iwl3945_bss_info_changed,
C
Christoph Hellwig 已提交
7791
	.hw_scan = iwl3945_mac_hw_scan
Z
Zhu Yi 已提交
7792 7793
};

C
Christoph Hellwig 已提交
7794
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
7795 7796
{
	int err = 0;
C
Christoph Hellwig 已提交
7797
	struct iwl3945_priv *priv;
Z
Zhu Yi 已提交
7798
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
7799
	struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7800
	unsigned long flags;
Z
Zhu Yi 已提交
7801

7802 7803 7804 7805
	/***********************
	 * 1. Allocating HW data
	 * ********************/

7806
	if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
C
Christoph Hellwig 已提交
7807
	    (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
Z
Zhu Yi 已提交
7808
		IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7809
			  IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
Z
Zhu Yi 已提交
7810 7811 7812 7813 7814 7815
		err = -EINVAL;
		goto out;
	}

	/* mac80211 allocates memory for this device instance, including
	 *   space for this driver's private structure */
C
Christoph Hellwig 已提交
7816
	hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
Z
Zhu Yi 已提交
7817 7818 7819 7820 7821 7822
	if (hw == NULL) {
		IWL_ERROR("Can not allocate network device\n");
		err = -ENOMEM;
		goto out;
	}

7823
	SET_IEEE80211_DEV(hw, &pdev->dev);
7824

Z
Zhu Yi 已提交
7825 7826 7827
	priv = hw->priv;
	priv->hw = hw;
	priv->pci_dev = pdev;
T
Tomas Winkler 已提交
7828
	priv->cfg = cfg;
7829

7830 7831 7832 7833 7834 7835 7836
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
	if (iwl3945_param_disable_hw_scan) {
		IWL_DEBUG_INFO("Disabling hw_scan\n");
		iwl3945_hw_ops.hw_scan = NULL;
	}

7837 7838 7839 7840
	IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
	hw->rate_control_algorithm = "iwl-3945-rs";
	hw->sta_data_size = sizeof(struct iwl3945_sta_priv);

7841
	/* Select antenna (may be helpful if only one antenna is connected) */
C
Christoph Hellwig 已提交
7842
	priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7843
#ifdef CONFIG_IWL3945_DEBUG
7844
	priv->debug_level = iwl3945_param_debug;
Z
Zhu Yi 已提交
7845 7846 7847
	atomic_set(&priv->restrict_refcnt, 0);
#endif

7848
	/* Tell mac80211 our characteristics */
7849
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
7850
		    IEEE80211_HW_NOISE_DBM;
Z
Zhu Yi 已提交
7851

7852 7853 7854 7855
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);

7856 7857
	hw->wiphy->fw_handles_regulatory = true;

7858
	/* 4 EDCA QOS priorities */
Z
Zhu Yi 已提交
7859 7860
	hw->queues = 4;

7861 7862 7863
	/***************************
	 * 2. Initializing PCI bus
	 * *************************/
Z
Zhu Yi 已提交
7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882
	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) {
		printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
		goto out_pci_disable_device;
	}

	pci_set_drvdata(pdev, priv);
	err = pci_request_regions(pdev, DRV_NAME);
	if (err)
		goto out_pci_disable_device;
7883

7884 7885 7886
	/***********************
	 * 3. Read REV Register
	 * ********************/
Z
Zhu Yi 已提交
7887 7888 7889 7890 7891 7892 7893 7894 7895 7896
	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);

7897 7898 7899
	/* 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
7900

7901 7902 7903
	/* nic init */
	iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
			CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
Z
Zhu Yi 已提交
7904

7905
	iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
Z
Zhu, Yi 已提交
7906 7907
	err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
				CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7908 7909 7910 7911
	if (err < 0) {
		IWL_DEBUG_INFO("Failed to init the card\n");
		goto out_remove_sysfs;
	}
Z
Zhu Yi 已提交
7912

7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925
	/***********************
	 * 4. Read EEPROM
	 * ********************/
	/* Read the EEPROM */
	err = iwl3945_eeprom_init(priv);
	if (err) {
		IWL_ERROR("Unable to init EEPROM\n");
		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
7926

7927 7928 7929
	/***********************
	 * 5. Setup HW Constants
	 * ********************/
Z
Zhu Yi 已提交
7930
	/* Device-specific setup */
C
Christoph Hellwig 已提交
7931
	if (iwl3945_hw_set_hw_setting(priv)) {
Z
Zhu Yi 已提交
7932 7933 7934 7935
		IWL_ERROR("failed to set hw settings\n");
		goto out_iounmap;
	}

7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959
	/***********************
	 * 6. Setup priv
	 * ********************/
	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;

C
Christoph Hellwig 已提交
7960
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7961 7962 7963 7964 7965 7966 7967 7968 7969 7970

	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;

7971
	err = iwl3945_init_channel_map(priv);
Z
Zhu Yi 已提交
7972
	if (err) {
7973
		IWL_ERROR("initializing regulatory failed: %d\n", err);
Z
Zhu Yi 已提交
7974 7975 7976
		goto out_release_irq;
	}

7977
	err = iwl3945_init_geos(priv);
Z
Zhu Yi 已提交
7978
	if (err) {
7979 7980
		IWL_ERROR("initializing geos failed: %d\n", err);
		goto out_free_channel_map;
Z
Zhu Yi 已提交
7981 7982
	}

7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994
	printk(KERN_INFO DRV_NAME
		": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);

	/***********************************
	 * 7. Initialize Module Parameters
	 * **********************************/

	/* Initialize module parameter values here */
	/* Disable radio (SW RF KILL) via parameter when loading driver */
	if (iwl3945_param_disable) {
		set_bit(STATUS_RF_KILL_SW, &priv->status);
		IWL_DEBUG_INFO("Radio disabled.\n");
7995 7996
	}

7997 7998 7999 8000 8001 8002 8003 8004 8005 8006

	/***********************
	 * 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);
8007
	if (err) {
8008 8009
		IWL_ERROR("failed to create sysfs device attributes\n");
		goto out_free_geos;
8010 8011
	}

8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025
	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
	 * *******************************/

8026 8027 8028
	err = ieee80211_register_hw(priv->hw);
	if (err) {
		IWL_ERROR("Failed to register network device (error %d)\n", err);
8029
		goto  out_remove_sysfs;
8030
	}
Z
Zhu Yi 已提交
8031

8032 8033
	priv->hw->conf.beacon_int = 100;
	priv->mac80211_registered = 1;
8034

Z
Zhu Yi 已提交
8035

8036 8037 8038 8039 8040
	err = iwl3945_rfkill_init(priv);
	if (err)
		IWL_ERROR("Unable to initialize RFKILL system. "
				  "Ignoring error: %d\n", err);

Z
Zhu Yi 已提交
8041 8042
	return 0;

8043 8044
 out_remove_sysfs:
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8045 8046 8047 8048
 out_free_geos:
	iwl3945_free_geos(priv);
 out_free_channel_map:
	iwl3945_free_channel_map(priv);
8049

Z
Zhu Yi 已提交
8050 8051 8052 8053

 out_release_irq:
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
C
Christoph Hellwig 已提交
8054
	iwl3945_unset_hw_setting(priv);
Z
Zhu Yi 已提交
8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067 8068

 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;
}

8069
static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8070
{
C
Christoph Hellwig 已提交
8071
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8072
	unsigned long flags;
Z
Zhu Yi 已提交
8073 8074 8075 8076 8077 8078 8079

	if (!priv)
		return;

	IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");

	set_bit(STATUS_EXIT_PENDING, &priv->status);
8080

C
Christoph Hellwig 已提交
8081
	iwl3945_down(priv);
Z
Zhu Yi 已提交
8082

8083 8084 8085 8086 8087 8088 8089 8090 8091
	/* 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
8092
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8093

8094
	iwl3945_rfkill_unregister(priv);
C
Christoph Hellwig 已提交
8095
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
8096 8097

	if (priv->rxq.bd)
C
Christoph Hellwig 已提交
8098 8099
		iwl3945_rx_queue_free(priv, &priv->rxq);
	iwl3945_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
8100

C
Christoph Hellwig 已提交
8101 8102
	iwl3945_unset_hw_setting(priv);
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8103

8104
	if (priv->mac80211_registered)
Z
Zhu Yi 已提交
8105 8106
		ieee80211_unregister_hw(priv->hw);

8107 8108 8109
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

C
Christoph Hellwig 已提交
8110
	/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Z
Zhu Yi 已提交
8111 8112 8113 8114 8115 8116 8117 8118 8119 8120
	 * 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);

8121 8122
	iwl3945_free_channel_map(priv);
	iwl3945_free_geos(priv);
8123
	kfree(priv->scan);
Z
Zhu Yi 已提交
8124 8125 8126 8127 8128 8129 8130 8131
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	ieee80211_free_hw(priv->hw);
}

#ifdef CONFIG_PM

C
Christoph Hellwig 已提交
8132
static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Z
Zhu Yi 已提交
8133
{
C
Christoph Hellwig 已提交
8134
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8135

8136 8137 8138 8139 8140
	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
8141 8142 8143 8144 8145 8146

	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

C
Christoph Hellwig 已提交
8147
static int iwl3945_pci_resume(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8148
{
C
Christoph Hellwig 已提交
8149
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8150 8151 8152

	pci_set_power_state(pdev, PCI_D0);

8153 8154
	if (priv->is_open)
		iwl3945_mac_start(priv->hw);
Z
Zhu Yi 已提交
8155

8156
	clear_bit(STATUS_IN_SUSPEND, &priv->status);
Z
Zhu Yi 已提交
8157 8158 8159 8160 8161
	return 0;
}

#endif /* CONFIG_PM */

8162
/*************** RFKILL FUNCTIONS **********/
8163
#ifdef CONFIG_IWL3945_RFKILL
8164 8165 8166 8167 8168 8169
/* software rf-kill from user */
static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
{
	struct iwl3945_priv *priv = data;
	int err = 0;

8170
	if (!priv->rfkill)
8171 8172 8173 8174 8175
	return 0;

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

T
Tomas Winkler 已提交
8176
	IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8177 8178 8179
	mutex_lock(&priv->mutex);

	switch (state) {
8180
	case RFKILL_STATE_UNBLOCKED:
8181
		if (iwl3945_is_rfkill_hw(priv)) {
8182
			err = -EBUSY;
8183 8184 8185
			goto out_unlock;
		}
		iwl3945_radio_kill_sw(priv, 0);
8186
		break;
8187
	case RFKILL_STATE_SOFT_BLOCKED:
8188 8189
		iwl3945_radio_kill_sw(priv, 1);
		break;
8190
	default:
T
Tomas Winkler 已提交
8191
		IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8192
		break;
8193
	}
8194
out_unlock:
8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207
	mutex_unlock(&priv->mutex);

	return err;
}

int iwl3945_rfkill_init(struct iwl3945_priv *priv)
{
	struct device *device = wiphy_dev(priv->hw->wiphy);
	int ret = 0;

	BUG_ON(device == NULL);

	IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
8208 8209
	priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
	if (!priv->rfkill) {
8210 8211 8212 8213 8214
		IWL_ERROR("Unable to allocate rfkill device.\n");
		ret = -ENOMEM;
		goto error;
	}

8215 8216 8217 8218 8219
	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;
8220

8221 8222
	priv->rfkill->dev.class->suspend = NULL;
	priv->rfkill->dev.class->resume = NULL;
8223

8224
	ret = rfkill_register(priv->rfkill);
8225 8226
	if (ret) {
		IWL_ERROR("Unable to register rfkill: %d\n", ret);
8227
		goto freed_rfkill;
8228 8229 8230 8231 8232 8233
	}

	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;

freed_rfkill:
8234 8235 8236
	if (priv->rfkill != NULL)
		rfkill_free(priv->rfkill);
	priv->rfkill = NULL;
8237 8238 8239 8240 8241 8242 8243 8244

error:
	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;
}

void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
{
8245 8246
	if (priv->rfkill)
		rfkill_unregister(priv->rfkill);
8247

8248
	priv->rfkill = NULL;
8249 8250 8251 8252 8253 8254
}

/* set rf-kill to the right state. */
void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
{

8255 8256 8257 8258 8259
	if (!priv->rfkill)
		return;

	if (iwl3945_is_rfkill_hw(priv)) {
		rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8260
		return;
8261
	}
8262

8263 8264
	if (!iwl3945_is_rfkill_sw(priv))
		rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8265
	else
8266
		rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8267 8268 8269
}
#endif

Z
Zhu Yi 已提交
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/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
8276
static struct pci_driver iwl3945_driver = {
Z
Zhu Yi 已提交
8277
	.name = DRV_NAME,
C
Christoph Hellwig 已提交
8278 8279 8280
	.id_table = iwl3945_hw_card_ids,
	.probe = iwl3945_pci_probe,
	.remove = __devexit_p(iwl3945_pci_remove),
Z
Zhu Yi 已提交
8281
#ifdef CONFIG_PM
C
Christoph Hellwig 已提交
8282 8283
	.suspend = iwl3945_pci_suspend,
	.resume = iwl3945_pci_resume,
Z
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8284 8285 8286
#endif
};

C
Christoph Hellwig 已提交
8287
static int __init iwl3945_init(void)
Z
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{

	int ret;
	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8293 8294 8295 8296 8297 8298 8299

	ret = iwl3945_rate_control_register();
	if (ret) {
		IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
		return ret;
	}

C
Christoph Hellwig 已提交
8300
	ret = pci_register_driver(&iwl3945_driver);
Z
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8301 8302
	if (ret) {
		IWL_ERROR("Unable to initialize PCI module\n");
8303
		goto error_register;
Z
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	}

	return ret;
8307 8308 8309 8310

error_register:
	iwl3945_rate_control_unregister();
	return ret;
Z
Zhu Yi 已提交
8311 8312
}

C
Christoph Hellwig 已提交
8313
static void __exit iwl3945_exit(void)
Z
Zhu Yi 已提交
8314
{
C
Christoph Hellwig 已提交
8315
	pci_unregister_driver(&iwl3945_driver);
8316
	iwl3945_rate_control_unregister();
Z
Zhu Yi 已提交
8317 8318
}

8319
MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8320

C
Christoph Hellwig 已提交
8321
module_param_named(antenna, iwl3945_param_antenna, int, 0444);
Z
Zhu Yi 已提交
8322
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
C
Christoph Hellwig 已提交
8323
module_param_named(disable, iwl3945_param_disable, int, 0444);
Z
Zhu Yi 已提交
8324
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
C
Christoph Hellwig 已提交
8325
module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
Z
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8326 8327
MODULE_PARM_DESC(hwcrypto,
		 "using hardware crypto engine (default 0 [software])\n");
8328
module_param_named(debug, iwl3945_param_debug, uint, 0444);
Z
Zhu Yi 已提交
8329
MODULE_PARM_DESC(debug, "debug output mask");
C
Christoph Hellwig 已提交
8330
module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
Z
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8331 8332
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");

C
Christoph Hellwig 已提交
8333
module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
Z
Zhu Yi 已提交
8334 8335
MODULE_PARM_DESC(queues_num, "number of hw queues.");

C
Christoph Hellwig 已提交
8336 8337
module_exit(iwl3945_exit);
module_init(iwl3945_init);