iwl3945-base.c 233.6 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-3945.h"
#include "iwl-helpers.h"

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#ifdef CONFIG_IWL3945_DEBUG
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u32 iwl3945_debug_level;
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#endif

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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 */
static int iwl3945_param_debug;    /* def: 0 = minimal debug log messages */
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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	station->current_rate.rate_n_flags =
			le16_to_cpu(station->sta.rate_n_flags);

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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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523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575

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
576
 * iwl3945_enqueue_hcmd - enqueue a uCode command
Z
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577 578 579 580 581 582 583
 * @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
584
static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
585
{
C
Christoph Hellwig 已提交
586 587 588
	struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
	struct iwl3945_queue *q = &txq->q;
	struct iwl3945_tfd_frame *tfd;
Z
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589
	u32 *control_flags;
C
Christoph Hellwig 已提交
590
	struct iwl3945_cmd *out_cmd;
Z
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591 592 593 594 595 596 597 598 599 600 601 602 603 604
	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));

605 606 607 608 609 610

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

C
Christoph Hellwig 已提交
611
	if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
Z
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612 613 614 615 616 617
		IWL_ERROR("No space for Tx\n");
		return -ENOSPC;
	}

	spin_lock_irqsave(&priv->hcmd_lock, flags);

618
	tfd = &txq->bd[q->write_ptr];
Z
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619 620 621 622
	memset(tfd, 0, sizeof(*tfd));

	control_flags = (u32 *) tfd;

623
	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
Z
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624 625 626 627 628 629 630 631 632 633 634
	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) |
635
			INDEX_TO_SEQ(q->write_ptr));
Z
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636 637 638 639
	if (out_cmd->meta.flags & CMD_SIZE_HUGE)
		out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);

	phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
C
Christoph Hellwig 已提交
640 641
			offsetof(struct iwl3945_cmd, hdr);
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
Z
Zhu Yi 已提交
642 643 644 645 646 647 648 649 650

	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),
651
		     fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Z
Zhu Yi 已提交
652 653

	txq->need_update = 1;
654 655

	/* Increment and update queue's write index */
T
Tomas Winkler 已提交
656
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
657
	ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
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	spin_unlock_irqrestore(&priv->hcmd_lock, flags);
	return ret ? ret : idx;
}

C
Christoph Hellwig 已提交
663
static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
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664 665 666 667 668 669 670 671 672 673 674 675 676 677
{
	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
678
	ret = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
679
	if (ret < 0) {
C
Christoph Hellwig 已提交
680
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
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681 682 683 684 685 686
			  get_cmd_string(cmd->id), ret);
		return ret;
	}
	return 0;
}

C
Christoph Hellwig 已提交
687
static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
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688 689 690 691 692 693 694 695 696
{
	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);

697
	if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
Z
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		IWL_ERROR("Error sending %s: Already sending a host command\n",
			  get_cmd_string(cmd->id));
700 701
		ret = -EBUSY;
		goto out;
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	}

	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
709
	cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Z
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	if (cmd_idx < 0) {
		ret = cmd_idx;
C
Christoph Hellwig 已提交
712
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
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			  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;
		goto out;
	}

	ret = 0;
	goto out;

cancel:
	if (cmd->meta.flags & CMD_WANT_SKB) {
C
Christoph Hellwig 已提交
756
		struct iwl3945_cmd *qcmd;
Z
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757 758 759 760 761 762 763 764 765 766 767 768 769 770

		/* 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:
771
	clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
Z
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772 773 774
	return ret;
}

C
Christoph Hellwig 已提交
775
int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
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{
	if (cmd->meta.flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
778
		return iwl3945_send_cmd_async(priv, cmd);
Z
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C
Christoph Hellwig 已提交
780
	return iwl3945_send_cmd_sync(priv, cmd);
Z
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}

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

C
Christoph Hellwig 已提交
791
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
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}

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

C
Christoph Hellwig 已提交
802
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
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}

C
Christoph Hellwig 已提交
805
int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
806
{
C
Christoph Hellwig 已提交
807
	return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Z
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}

/**
C
Christoph Hellwig 已提交
811
 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
812 813
 * @band: 2.4 or 5 GHz band
 * @channel: Any channel valid for the requested band
Z
Zhu Yi 已提交
814

815
 * In addition to setting the staging RXON, priv->band is also set.
Z
Zhu Yi 已提交
816 817
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
818
 * in the staging RXON flag structure based on the band
Z
Zhu Yi 已提交
819
 */
820 821 822
static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
				    enum ieee80211_band band,
				    u16 channel)
Z
Zhu Yi 已提交
823
{
824
	if (!iwl3945_get_channel_info(priv, band, channel)) {
Z
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825
		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
826
			       channel, band);
Z
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827 828 829 830
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
831
	    (priv->band == band))
Z
Zhu Yi 已提交
832 833 834
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
835
	if (band == IEEE80211_BAND_5GHZ)
Z
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836 837 838 839
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

840
	priv->band = band;
Z
Zhu Yi 已提交
841

842
	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Z
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843 844 845 846 847

	return 0;
}

/**
C
Christoph Hellwig 已提交
848
 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Z
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849 850 851 852 853
 *
 * 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
854
static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919
{
	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
920
		IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
Z
Zhu Yi 已提交
921 922 923 924 925 926
		return -1;
	}
	return 0;
}

/**
927
 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
928
 * @priv: staging_rxon is compared to active_rxon
Z
Zhu Yi 已提交
929
 *
930 931 932
 * 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
933
 */
C
Christoph Hellwig 已提交
934
static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
935 936 937
{

	/* These items are only settable from the full RXON command */
938
	if (!(iwl3945_is_associated(priv)) ||
Z
Zhu Yi 已提交
939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968
	    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
969
static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
970 971
{
	int rc = 0;
C
Christoph Hellwig 已提交
972 973 974
	struct iwl3945_rx_packet *res = NULL;
	struct iwl3945_rxon_assoc_cmd rxon_assoc;
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
975 976 977 978 979
		.id = REPLY_RXON_ASSOC,
		.len = sizeof(rxon_assoc),
		.meta.flags = CMD_WANT_SKB,
		.data = &rxon_assoc,
	};
C
Christoph Hellwig 已提交
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	const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
	const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
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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;

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	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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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
Christoph Hellwig 已提交
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 * iwl3945_commit_rxon - commit staging_rxon to hardware
Z
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 *
1016
 * The RXON command in staging_rxon is committed to the hardware and
Z
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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
Christoph Hellwig 已提交
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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
Christoph Hellwig 已提交
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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
Christoph Hellwig 已提交
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	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) &&
Z
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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;

C
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		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
				      sizeof(struct iwl3945_rxon_cmd),
Z
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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",
Z
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		       ((priv->staging_rxon.filter_flags &
			 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
		       le16_to_cpu(priv->staging_rxon.channel),
J
Johannes Berg 已提交
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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
Christoph Hellwig 已提交
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	iwl3945_clear_stations_table(priv);
1103

Z
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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);
Z
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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
Christoph Hellwig 已提交
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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
1121
	if (iwl3945_is_associated(priv) &&
1122
	    (priv->iw_mode == NL80211_IFTYPE_STATION))
C
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1123
		if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
Z
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1124 1125 1126 1127 1128
		    == IWL_INVALID_STATION) {
			IWL_ERROR("Error adding AP address for transmit.\n");
			return -EIO;
		}

1129
	/* Init the hardware's rate fallback order based on the band */
Z
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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
Christoph Hellwig 已提交
1139
static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
Z
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1140
{
C
Christoph Hellwig 已提交
1141
	struct iwl3945_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,
	};

C
Christoph Hellwig 已提交
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	return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
				sizeof(struct iwl3945_bt_cmd), &bt_cmd);
Z
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}

C
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1153
static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1154 1155
{
	int rc = 0;
C
Christoph Hellwig 已提交
1156 1157
	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
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1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
		.id = REPLY_SCAN_ABORT_CMD,
		.meta.flags = CMD_WANT_SKB,
	};

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

C
Christoph Hellwig 已提交
1170
	rc = iwl3945_send_cmd_sync(priv, &cmd);
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	if (rc) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return rc;
	}

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	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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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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1196 1197 1198 1199 1200 1201 1202 1203
					struct sk_buff *skb)
{
	return 1;
}

/*
 * CARD_STATE_CMD
 *
1204
 * Use: Sets the device's internal card state to enable, disable, or halt
Z
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 *
 * 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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1212
{
C
Christoph Hellwig 已提交
1213
	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
1221
		cmd.meta.u.callback = iwl3945_card_state_sync_callback;
Z
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1222

C
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	return iwl3945_send_cmd(priv, &cmd);
Z
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1224 1225
}

C
Christoph Hellwig 已提交
1226 1227
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
1228
{
C
Christoph Hellwig 已提交
1229
	struct iwl3945_rx_packet *res = NULL;
Z
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1230 1231 1232 1233 1234 1235

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

C
Christoph Hellwig 已提交
1236
	res = (struct iwl3945_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
1254 1255
int iwl3945_send_add_station(struct iwl3945_priv *priv,
			 struct iwl3945_addsta_cmd *sta, u8 flags)
Z
Zhu Yi 已提交
1256
{
C
Christoph Hellwig 已提交
1257
	struct iwl3945_rx_packet *res = NULL;
Z
Zhu Yi 已提交
1258
	int rc = 0;
C
Christoph Hellwig 已提交
1259
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
1260
		.id = REPLY_ADD_STA,
C
Christoph Hellwig 已提交
1261
		.len = sizeof(struct iwl3945_addsta_cmd),
Z
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1262 1263 1264 1265 1266
		.meta.flags = flags,
		.data = sta,
	};

	if (flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
1267
		cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Z
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1268 1269 1270
	else
		cmd.meta.flags |= CMD_WANT_SKB;

C
Christoph Hellwig 已提交
1271
	rc = iwl3945_send_cmd(priv, &cmd);
Z
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1272 1273 1274 1275

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

C
Christoph Hellwig 已提交
1276
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
	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
1301
static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
Z
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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 1331 1332 1333 1334
				   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
1335
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
Zhu Yi 已提交
1336 1337 1338
	return 0;
}

C
Christoph Hellwig 已提交
1339
static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
Z
Zhu Yi 已提交
1340 1341 1342 1343
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
C
Christoph Hellwig 已提交
1344 1345
	memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
	memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
Z
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1346 1347 1348 1349 1350 1351
	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
1352
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1353 1354 1355
	return 0;
}

C
Christoph Hellwig 已提交
1356
static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1357 1358 1359 1360 1361 1362 1363 1364 1365
{
	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
1366
		kfree(list_entry(element, struct iwl3945_frame, list));
Z
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1367 1368 1369 1370 1371 1372 1373 1374 1375 1376
		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
1377
static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1378
{
C
Christoph Hellwig 已提交
1379
	struct iwl3945_frame *frame;
Z
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1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393
	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
1394
	return list_entry(element, struct iwl3945_frame, list);
Z
Zhu Yi 已提交
1395 1396
}

C
Christoph Hellwig 已提交
1397
static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
Z
Zhu Yi 已提交
1398 1399 1400 1401 1402
{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

C
Christoph Hellwig 已提交
1403
unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1404
				struct ieee80211_hdr *hdr,
1405
				int left)
Z
Zhu Yi 已提交
1406 1407
{

C
Christoph Hellwig 已提交
1408
	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1409 1410
	    ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
	     (priv->iw_mode != NL80211_IFTYPE_AP)))
Z
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1411 1412 1413 1414 1415 1416 1417 1418 1419 1420
		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;
}

1421
static u8 iwl3945_rate_get_lowest_plcp(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1422 1423
{
	u8 i;
1424 1425 1426 1427
	int rate_mask;

	/* Set rate mask*/
	if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
1428
		rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1429
	else
1430
		rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
Z
Zhu Yi 已提交
1431 1432

	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
C
Christoph Hellwig 已提交
1433
	     i = iwl3945_rates[i].next_ieee) {
Z
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1434
		if (rate_mask & (1 << i))
C
Christoph Hellwig 已提交
1435
			return iwl3945_rates[i].plcp;
Z
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1436 1437
	}

1438 1439 1440 1441 1442
	/* 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;
Z
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}

C
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1445
static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
Z
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1446
{
C
Christoph Hellwig 已提交
1447
	struct iwl3945_frame *frame;
Z
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1448 1449 1450 1451
	unsigned int frame_size;
	int rc;
	u8 rate;

C
Christoph Hellwig 已提交
1452
	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;
	}

1460
	rate = iwl3945_rate_get_lowest_plcp(priv);
Z
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C
Christoph Hellwig 已提交
1462
	frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Z
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C
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1464
	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
1467
	iwl3945_free_frame(priv, frame);
Z
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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);
}

1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496
/*
 * 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;
}

Z
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1497
/**
C
Christoph Hellwig 已提交
1498
 * iwl3945_eeprom_init - read EEPROM contents
Z
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1499
 *
1500
 * Load the EEPROM contents from adapter into priv->eeprom
Z
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1501 1502 1503
 *
 * NOTE:  This routine uses the non-debug IO access functions.
 */
C
Christoph Hellwig 已提交
1504
int iwl3945_eeprom_init(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1505
{
1506
	u16 *e = (u16 *)&priv->eeprom;
C
Christoph Hellwig 已提交
1507
	u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
Z
Zhu Yi 已提交
1508
	int sz = sizeof(priv->eeprom);
1509
	int ret;
Z
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1510 1511 1512 1513 1514 1515 1516 1517 1518
	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
1519
		IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
Z
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1520 1521 1522
		return -ENOENT;
	}

1523
	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
1524 1525
	ret = iwl3945_eeprom_acquire_semaphore(priv);
	if (ret < 0) {
1526
		IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
Z
Zhu Yi 已提交
1527 1528 1529 1530 1531
		return -ENOENT;
	}

	/* eeprom is an array of 16bit values */
	for (addr = 0; addr < sz; addr += sizeof(u16)) {
1532
		u32 r;
Z
Zhu Yi 已提交
1533

1534 1535 1536 1537 1538 1539 1540
		_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
1541
			IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
1542
			return ret;
Z
Zhu Yi 已提交
1543
		}
1544 1545

		r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1546
		e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
Z
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1547 1548 1549 1550 1551
	}

	return 0;
}

C
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1552
static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
Z
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1553 1554 1555
{
	if (priv->hw_setting.shared_virt)
		pci_free_consistent(priv->pci_dev,
C
Christoph Hellwig 已提交
1556
				    sizeof(struct iwl3945_shared),
Z
Zhu Yi 已提交
1557 1558 1559 1560 1561
				    priv->hw_setting.shared_virt,
				    priv->hw_setting.shared_phys);
}

/**
C
Christoph Hellwig 已提交
1562
 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Z
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1563 1564 1565
 *
 * return : set the bit for each supported rate insert in ie
 */
C
Christoph Hellwig 已提交
1566
static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1567
				    u16 basic_rate, int *left)
Z
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1568 1569 1570
{
	u16 ret_rates = 0, bit;
	int i;
1571 1572
	u8 *cnt = ie;
	u8 *rates = ie + 1;
Z
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1573 1574 1575 1576

	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
1577
			rates[*cnt] = iwl3945_rates[i].ieee |
1578 1579 1580 1581 1582
				((bit & basic_rate) ? 0x80 : 0x00);
			(*cnt)++;
			(*left)--;
			if ((*left <= 0) ||
			    (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
Z
Zhu Yi 已提交
1583 1584 1585 1586 1587 1588 1589 1590
				break;
		}
	}

	return ret_rates;
}

/**
C
Christoph Hellwig 已提交
1591
 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Z
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1592
 */
C
Christoph Hellwig 已提交
1593
static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
Z
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1594
			      struct ieee80211_mgmt *frame,
J
Johannes Berg 已提交
1595
			      int left)
Z
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1596 1597 1598
{
	int len = 0;
	u8 *pos = NULL;
1599
	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
1609
	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
1611
	memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
Z
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	frame->seq_ctrl = 0;

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

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

	/* fill in supported rate */
	/* ...next IE... */
	left -= 2;
	if (left < 0)
		return 0;
1630

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1631 1632 1633
	/* ... fill it in... */
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos = 0;
1634 1635 1636

	priv->active_rate = priv->rates_mask;
	active_rates = priv->active_rate;
Z
Zhu Yi 已提交
1637 1638
	priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;

1639
	cck_rates = IWL_CCK_RATES_MASK & active_rates;
C
Christoph Hellwig 已提交
1640
	ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1641 1642 1643
			priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

C
Christoph Hellwig 已提交
1644
	ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1645 1646 1647
				 priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

Z
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1648 1649
	len += 2 + *pos;
	pos += (*pos) + 1;
1650
	if (active_rates == 0)
Z
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1651 1652 1653 1654 1655 1656 1657 1658 1659 1660
		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
1661
	iwl3945_supported_rate_to_ie(pos, active_rates,
1662
				 priv->active_rate_basic, &left);
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1663 1664 1665 1666 1667 1668 1669 1670 1671 1672
	if (*pos > 0)
		len += 2 + *pos;

 fill_end:
	return (u16)len;
}

/*
 * QoS  support
*/
C
Christoph Hellwig 已提交
1673 1674
static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
				       struct iwl3945_qosparam_cmd *qos)
Z
Zhu Yi 已提交
1675 1676
{

C
Christoph Hellwig 已提交
1677 1678
	return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
				sizeof(struct iwl3945_qosparam_cmd), qos);
Z
Zhu Yi 已提交
1679 1680
}

C
Christoph Hellwig 已提交
1681
static void iwl3945_reset_qos(struct iwl3945_priv *priv)
Z
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1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
{
	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;

1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707
	/* 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
Zhu Yi 已提交
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 1769 1770 1771
		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
1772
static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
Z
Zhu Yi 已提交
1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792
{
	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
1793
	if (force || iwl3945_is_associated(priv)) {
T
Tomas Winkler 已提交
1794
		IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
Z
Zhu Yi 已提交
1795 1796
			      priv->qos_data.qos_active);

C
Christoph Hellwig 已提交
1797
		iwl3945_send_qos_params_command(priv,
Z
Zhu Yi 已提交
1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817
				&(priv->qos_data.def_qos_parm));
	}
}

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

#define NOSLP __constant_cpu_to_le32(0)
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
#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
1818
/* for TIM  0-10 */
C
Christoph Hellwig 已提交
1819
static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1820 1821 1822 1823 1824 1825 1826 1827
	{{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
1828
/* for TIM > 10 */
C
Christoph Hellwig 已提交
1829
static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841
	{{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
1842
int iwl3945_power_init_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1843 1844
{
	int rc = 0, i;
C
Christoph Hellwig 已提交
1845 1846
	struct iwl3945_power_mgr *pow_data;
	int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
Z
Zhu Yi 已提交
1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
	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 {
C
Christoph Hellwig 已提交
1865
		struct iwl3945_powertable_cmd *cmd;
Z
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1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880

		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
1881 1882
static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
				struct iwl3945_powertable_cmd *cmd, u32 mode)
Z
Zhu Yi 已提交
1883 1884 1885 1886
{
	int rc = 0, i;
	u8 skip;
	u32 max_sleep = 0;
C
Christoph Hellwig 已提交
1887
	struct iwl3945_power_vec_entry *range;
Z
Zhu Yi 已提交
1888
	u8 period = 0;
C
Christoph Hellwig 已提交
1889
	struct iwl3945_power_mgr *pow_data;
Z
Zhu Yi 已提交
1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901

	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
1902
	memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
Z
Zhu Yi 已提交
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 1942 1943 1944

#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
1945
static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
Z
Zhu Yi 已提交
1946
{
1947
	u32 uninitialized_var(final_mode);
Z
Zhu Yi 已提交
1948
	int rc;
C
Christoph Hellwig 已提交
1949
	struct iwl3945_powertable_cmd cmd;
Z
Zhu Yi 已提交
1950 1951

	/* If on battery, set to 3,
1952
	 * if plugged into AC power, set to CAM ("continuously aware mode"),
Z
Zhu Yi 已提交
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965
	 * 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
1966
	iwl3945_update_power_cmd(priv, &cmd, final_mode);
Z
Zhu Yi 已提交
1967

C
Christoph Hellwig 已提交
1968
	rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
Z
Zhu Yi 已提交
1969 1970 1971 1972 1973 1974 1975 1976 1977 1978

	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
1979
 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
1980 1981 1982
 *
 * NOTE: priv->mutex is not required before calling this function
 */
C
Christoph Hellwig 已提交
1983
static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
{
	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
2006
 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
2007 2008 2009 2010
 * @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
2011
static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
Z
Zhu Yi 已提交
2012 2013 2014 2015
{
	unsigned long now = jiffies;
	int ret;

C
Christoph Hellwig 已提交
2016
	ret = iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032
	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
2033
static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
Z
Zhu Yi 已提交
2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045
{
	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
2046
static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067
{
	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);
	priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
	priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);

	priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;

	tsf = priv->timestamp1;
	tsf = ((tsf << 32) | priv->timestamp0);

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

2068
	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Z
Zhu Yi 已提交
2069 2070 2071 2072 2073 2074 2075
		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
2076
			    iwl3945_adjust_beacon_interval(
Z
Zhu Yi 已提交
2077 2078 2079 2080 2081 2082
				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
2083
			iwl3945_adjust_beacon_interval(conf->beacon_int);
Z
Zhu Yi 已提交
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101
		/* 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
2102
static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2103
{
C
Christoph Hellwig 已提交
2104
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120
		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");
2121 2122 2123 2124
	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
2125 2126 2127 2128 2129 2130 2131 2132 2133
	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
2134
static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
Z
Zhu Yi 已提交
2135
{
C
Christoph Hellwig 已提交
2136
	struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
Z
Zhu Yi 已提交
2137 2138 2139 2140 2141 2142 2143 2144 2145

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

	return 0;
}

2146 2147
static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
2148
{
2149
	if (band == IEEE80211_BAND_5GHZ) {
Z
Zhu Yi 已提交
2150 2151 2152 2153 2154
		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
2155
		/* Copied from iwl3945_bg_post_associate() */
Z
Zhu Yi 已提交
2156 2157 2158 2159 2160
		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;

2161
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
2162 2163 2164 2165 2166 2167 2168 2169 2170
			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;
	}
}

/*
2171
 * initialize rxon structure with default values from eeprom
Z
Zhu Yi 已提交
2172
 */
2173 2174
static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv,
					      int mode)
Z
Zhu Yi 已提交
2175
{
C
Christoph Hellwig 已提交
2176
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2177 2178 2179

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

2180
	switch (mode) {
2181
	case NL80211_IFTYPE_AP:
Z
Zhu Yi 已提交
2182 2183 2184
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
		break;

2185
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
2186 2187 2188 2189
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
		break;

2190
	case NL80211_IFTYPE_ADHOC:
Z
Zhu Yi 已提交
2191 2192 2193 2194 2195 2196
		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;

2197
	case NL80211_IFTYPE_MONITOR:
Z
Zhu Yi 已提交
2198 2199 2200 2201
		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;
2202
	default:
2203
		IWL_ERROR("Unsupported interface type %d\n", mode);
2204
		break;
Z
Zhu Yi 已提交
2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215
	}

#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

2216
	ch_info = iwl3945_get_channel_info(priv, priv->band,
2217
				       le16_to_cpu(priv->active_rxon.channel));
Z
Zhu Yi 已提交
2218 2219 2220 2221 2222 2223 2224 2225

	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
	 */
2226
	if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
Z
Zhu Yi 已提交
2227 2228 2229 2230
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	if (is_channel_a_band(ch_info))
2231
		priv->band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
2232
	else
2233
		priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
2234

2235
	iwl3945_set_flags_for_phymode(priv, priv->band);
Z
Zhu Yi 已提交
2236 2237 2238 2239 2240 2241 2242

	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
2243
static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
Z
Zhu Yi 已提交
2244
{
2245
	if (mode == NL80211_IFTYPE_ADHOC) {
C
Christoph Hellwig 已提交
2246
		const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2247

C
Christoph Hellwig 已提交
2248
		ch_info = iwl3945_get_channel_info(priv,
2249
			priv->band,
Z
Zhu Yi 已提交
2250 2251 2252 2253 2254 2255 2256 2257 2258
			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;
		}
	}

2259
	iwl3945_connection_init_rx_config(priv, mode);
Z
Zhu Yi 已提交
2260 2261
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);

C
Christoph Hellwig 已提交
2262
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
2263

T
Tomas Winkler 已提交
2264
	/* don't commit rxon if rf-kill is on*/
2265 2266 2267 2268 2269 2270 2271 2272 2273 2274
	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
2275
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
2276 2277 2278 2279

	return 0;
}

C
Christoph Hellwig 已提交
2280
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2281
				      struct ieee80211_tx_info *info,
C
Christoph Hellwig 已提交
2282
				      struct iwl3945_cmd *cmd,
Z
Zhu Yi 已提交
2283 2284 2285
				      struct sk_buff *skb_frag,
				      int last_frag)
{
2286
	struct iwl3945_hw_key *keyinfo =
2287
	    &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
Z
Zhu Yi 已提交
2288 2289 2290 2291 2292

	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
2293
		IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
Z
Zhu Yi 已提交
2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309
		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 |
2310
		    (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
Z
Zhu Yi 已提交
2311 2312 2313 2314 2315 2316 2317

		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 "
2318
			     "with key %d\n", info->control.hw_key->hw_key_idx);
Z
Zhu Yi 已提交
2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329
		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
2330 2331
static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
				  struct iwl3945_cmd *cmd,
2332
				  struct ieee80211_tx_info *info,
Z
Zhu Yi 已提交
2333 2334 2335
				  struct ieee80211_hdr *hdr,
				  int is_unicast, u8 std_id)
{
2336
	__le16 fc = hdr->frame_control;
Z
Zhu Yi 已提交
2337
	__le32 tx_flags = cmd->cmd.tx.tx_flags;
2338
	u8 rc_flags = info->control.rates[0].flags;
Z
Zhu Yi 已提交
2339 2340

	cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2341
	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
Z
Zhu Yi 已提交
2342
		tx_flags |= TX_CMD_FLG_ACK_MSK;
2343
		if (ieee80211_is_mgmt(fc))
Z
Zhu Yi 已提交
2344
			tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2345
		if (ieee80211_is_probe_resp(fc) &&
Z
Zhu Yi 已提交
2346 2347 2348 2349 2350 2351 2352 2353
		    !(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;
2354
	if (ieee80211_has_morefrags(fc))
Z
Zhu Yi 已提交
2355 2356
		tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;

2357 2358
	if (ieee80211_is_data_qos(fc)) {
		u8 *qc = ieee80211_get_qos_ctl(hdr);
2359
		cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
Z
Zhu Yi 已提交
2360
		tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2361
	} else {
Z
Zhu Yi 已提交
2362
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2363
	}
Z
Zhu Yi 已提交
2364

2365
	if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
Z
Zhu Yi 已提交
2366 2367
		tx_flags |= TX_CMD_FLG_RTS_MSK;
		tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2368
	} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
Z
Zhu Yi 已提交
2369 2370 2371 2372 2373 2374 2375 2376
		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);
2377 2378
	if (ieee80211_is_mgmt(fc)) {
		if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2379
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
Z
Zhu Yi 已提交
2380
		else
2381
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
M
Mohamed Abbas 已提交
2382
	} else {
Z
Zhu Yi 已提交
2383
		cmd->cmd.tx.timeout.pm_frame_timeout = 0;
M
Mohamed Abbas 已提交
2384 2385 2386 2387
#ifdef CONFIG_IWL3945_LEDS
		priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
#endif
	}
Z
Zhu Yi 已提交
2388 2389 2390 2391 2392 2393

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

2394 2395 2396
/**
 * iwl3945_get_sta_id - Find station's index within station table
 */
C
Christoph Hellwig 已提交
2397
static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
Z
Zhu Yi 已提交
2398 2399 2400 2401
{
	int sta_id;
	u16 fc = le16_to_cpu(hdr->frame_control);

2402
	/* If this frame is broadcast or management, use broadcast station id */
Z
Zhu Yi 已提交
2403 2404 2405 2406 2407 2408
	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) {

2409 2410
	/* If we are a client station in a BSS network, use the special
	 * AP station entry (that's the only station we communicate with) */
2411
	case NL80211_IFTYPE_STATION:
Z
Zhu Yi 已提交
2412 2413 2414
		return IWL_AP_ID;

	/* If we are an AP, then find the station, or use BCAST */
2415
	case NL80211_IFTYPE_AP:
C
Christoph Hellwig 已提交
2416
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2417 2418 2419 2420
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
		return priv->hw_setting.bcast_sta_id;

2421 2422
	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
2423
	case NL80211_IFTYPE_ADHOC: {
2424
		/* Create new station table entry */
C
Christoph Hellwig 已提交
2425
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2426 2427 2428
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

C
Christoph Hellwig 已提交
2429
		sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Z
Zhu Yi 已提交
2430 2431 2432 2433

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

J
Johannes Berg 已提交
2434
		IWL_DEBUG_DROP("Station %pM not in station map. "
Z
Zhu Yi 已提交
2435
			       "Defaulting to broadcast...\n",
J
Johannes Berg 已提交
2436
			       hdr->addr1);
C
Christoph Hellwig 已提交
2437
		iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Z
Zhu Yi 已提交
2438
		return priv->hw_setting.bcast_sta_id;
2439
	}
2440 2441
	/* If we are in monitor mode, use BCAST. This is required for
	 * packet injection. */
2442
	case NL80211_IFTYPE_MONITOR:
2443 2444
		return priv->hw_setting.bcast_sta_id;

Z
Zhu Yi 已提交
2445
	default:
J
Jiri Slaby 已提交
2446
		IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
Z
Zhu Yi 已提交
2447 2448 2449 2450 2451 2452 2453
		return priv->hw_setting.bcast_sta_id;
	}
}

/*
 * start REPLY_TX command process
 */
2454
static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
Z
Zhu Yi 已提交
2455 2456
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2457
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
C
Christoph Hellwig 已提交
2458
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
2459
	u32 *control_flags;
2460
	int txq_id = skb_get_queue_mapping(skb);
C
Christoph Hellwig 已提交
2461 2462
	struct iwl3945_tx_queue *txq = NULL;
	struct iwl3945_queue *q = NULL;
Z
Zhu Yi 已提交
2463 2464
	dma_addr_t phys_addr;
	dma_addr_t txcmd_phys;
C
Christoph Hellwig 已提交
2465
	struct iwl3945_cmd *out_cmd = NULL;
2466 2467 2468
	u16 len, idx, len_org, hdr_len;
	u8 id;
	u8 unicast;
Z
Zhu Yi 已提交
2469
	u8 sta_id;
2470
	u8 tid = 0;
Z
Zhu Yi 已提交
2471
	u16 seq_number = 0;
2472
	__le16 fc;
Z
Zhu Yi 已提交
2473
	u8 wait_write_ptr = 0;
2474
	u8 *qc = NULL;
Z
Zhu Yi 已提交
2475 2476 2477 2478
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2479
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
2480 2481 2482 2483
		IWL_DEBUG_DROP("Dropping - RF KILL\n");
		goto drop_unlock;
	}

2484
	if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
Z
Zhu Yi 已提交
2485 2486 2487 2488 2489 2490 2491
		IWL_ERROR("ERROR: No TX rate available.\n");
		goto drop_unlock;
	}

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

2492
	fc = hdr->frame_control;
Z
Zhu Yi 已提交
2493

2494
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
2495 2496
	if (ieee80211_is_auth(fc))
		IWL_DEBUG_TX("Sending AUTH frame\n");
2497
	else if (ieee80211_is_assoc_req(fc))
Z
Zhu Yi 已提交
2498
		IWL_DEBUG_TX("Sending ASSOC frame\n");
2499
	else if (ieee80211_is_reassoc_req(fc))
Z
Zhu Yi 已提交
2500 2501 2502
		IWL_DEBUG_TX("Sending REASSOC frame\n");
#endif

2503
	/* drop all data frame if we are not associated */
2504
	if (ieee80211_is_data(fc) &&
2505
	    (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
2506
	    (!iwl3945_is_associated(priv) ||
2507
	     ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
C
Christoph Hellwig 已提交
2508
		IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
Z
Zhu Yi 已提交
2509 2510 2511 2512 2513
		goto drop_unlock;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

2514
	hdr_len = ieee80211_hdrlen(fc);
2515 2516

	/* Find (or create) index into station table for destination station */
C
Christoph Hellwig 已提交
2517
	sta_id = iwl3945_get_sta_id(priv, hdr);
Z
Zhu Yi 已提交
2518
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
2519 2520
		IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
			       hdr->addr1);
Z
Zhu Yi 已提交
2521 2522 2523 2524 2525
		goto drop;
	}

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

2526 2527
	if (ieee80211_is_data_qos(fc)) {
		qc = ieee80211_get_qos_ctl(hdr);
2528
		tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
Z
Zhu Yi 已提交
2529 2530 2531 2532 2533 2534 2535
		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;
	}
2536 2537

	/* Descriptor for chosen Tx queue */
Z
Zhu Yi 已提交
2538 2539 2540 2541 2542
	txq = &priv->txq[txq_id];
	q = &txq->q;

	spin_lock_irqsave(&priv->lock, flags);

2543
	/* Set up first empty TFD within this queue's circular TFD buffer */
2544
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
2545 2546
	memset(tfd, 0, sizeof(*tfd));
	control_flags = (u32 *) tfd;
2547
	idx = get_cmd_index(q, q->write_ptr, 0);
Z
Zhu Yi 已提交
2548

2549
	/* Set up driver data for this TFD */
C
Christoph Hellwig 已提交
2550
	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2551
	txq->txb[q->write_ptr].skb[0] = skb;
2552 2553

	/* Init first empty entry in queue's array of Tx/cmd buffers */
Z
Zhu Yi 已提交
2554 2555 2556
	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));
2557 2558 2559 2560 2561 2562 2563

	/*
	 * 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
2564 2565
	out_cmd->hdr.cmd = REPLY_TX;
	out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2566
				INDEX_TO_SEQ(q->write_ptr)));
2567 2568

	/* Copy MAC header from skb into command buffer */
Z
Zhu Yi 已提交
2569 2570
	memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);

2571 2572 2573 2574 2575 2576 2577 2578 2579
	/*
	 * 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
2580
	len = priv->hw_setting.tx_cmd_len +
C
Christoph Hellwig 已提交
2581
		sizeof(struct iwl3945_cmd_header) + hdr_len;
Z
Zhu Yi 已提交
2582 2583 2584 2585 2586 2587 2588 2589 2590

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

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

2591 2592
	/* Physical address of this Tx command's header (not MAC header!),
	 * within command buffer array. */
C
Christoph Hellwig 已提交
2593 2594
	txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
		     offsetof(struct iwl3945_cmd, hdr);
Z
Zhu Yi 已提交
2595

2596 2597
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
C
Christoph Hellwig 已提交
2598
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Z
Zhu Yi 已提交
2599

2600
	if (info->control.hw_key)
2601
		iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
Z
Zhu Yi 已提交
2602

2603 2604
	/* 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
2605 2606 2607 2608
	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
2609
		iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Z
Zhu Yi 已提交
2610 2611 2612
	}

	if (!len)
2613
		/* If there is no payload, then we use only one Tx buffer */
Z
Zhu Yi 已提交
2614 2615
		*control_flags = TFD_CTL_COUNT_SET(1);
	else
2616 2617
		/* Else use 2 buffers.
		 * Tell 3945 about any padding after MAC header */
Z
Zhu Yi 已提交
2618 2619 2620
		*control_flags = TFD_CTL_COUNT_SET(2) |
			TFD_CTL_PAD_SET(U32_PAD(len));

2621
	/* Total # bytes to be transmitted */
Z
Zhu Yi 已提交
2622 2623 2624 2625
	len = (u16)skb->len;
	out_cmd->cmd.tx.len = cpu_to_le16(len);

	/* TODO need this for burst mode later on */
2626
	iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
Z
Zhu Yi 已提交
2627 2628

	/* set is_hcca to 0; it probably will never be implemented */
2629
	iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
Z
Zhu Yi 已提交
2630 2631 2632 2633

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

2634
	if (!ieee80211_has_morefrags(hdr->frame_control)) {
Z
Zhu Yi 已提交
2635
		txq->need_update = 1;
2636
		if (qc)
Z
Zhu Yi 已提交
2637 2638 2639 2640 2641 2642
			priv->stations[sta_id].tid[tid].seq_number = seq_number;
	} else {
		wait_write_ptr = 1;
		txq->need_update = 0;
	}

C
Christoph Hellwig 已提交
2643
	iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
Z
Zhu Yi 已提交
2644 2645
			   sizeof(out_cmd->cmd.tx));

C
Christoph Hellwig 已提交
2646
	iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2647
			   ieee80211_hdrlen(fc));
Z
Zhu Yi 已提交
2648

2649
	/* Tell device the write index *just past* this latest filled TFD */
T
Tomas Winkler 已提交
2650
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
2651
	rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2652 2653 2654 2655 2656
	spin_unlock_irqrestore(&priv->lock, flags);

	if (rc)
		return rc;

C
Christoph Hellwig 已提交
2657
	if ((iwl3945_queue_space(q) < q->high_mark)
Z
Zhu Yi 已提交
2658 2659 2660 2661
	    && priv->mac80211_registered) {
		if (wait_write_ptr) {
			spin_lock_irqsave(&priv->lock, flags);
			txq->need_update = 1;
C
Christoph Hellwig 已提交
2662
			iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2663 2664 2665
			spin_unlock_irqrestore(&priv->lock, flags);
		}

2666
		ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
Z
Zhu Yi 已提交
2667 2668 2669 2670 2671 2672 2673 2674 2675 2676
	}

	return 0;

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

C
Christoph Hellwig 已提交
2677
static void iwl3945_set_rate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2678
{
2679
	const struct ieee80211_supported_band *sband = NULL;
Z
Zhu Yi 已提交
2680 2681 2682
	struct ieee80211_rate *rate;
	int i;

2683 2684
	sband = iwl3945_get_band(priv, priv->band);
	if (!sband) {
2685 2686 2687
		IWL_ERROR("Failed to set rate: unable to get hw mode\n");
		return;
	}
Z
Zhu Yi 已提交
2688 2689 2690 2691

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

2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702
	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
2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730
	}

	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
2731
static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
Z
Zhu Yi 已提交
2732 2733 2734 2735 2736 2737 2738 2739 2740 2741
{
	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
2742
		iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2743
		/* FIXME: This is a workaround for AP */
2744
		if (priv->iw_mode != NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
2745
			spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2746
			iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
2747 2748
				    CSR_UCODE_SW_BIT_RFKILL);
			spin_unlock_irqrestore(&priv->lock, flags);
C
Christoph Hellwig 已提交
2749
			iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Z
Zhu Yi 已提交
2750 2751 2752 2753 2754 2755
			set_bit(STATUS_RF_KILL_SW, &priv->status);
		}
		return;
	}

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2756
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
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	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
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	iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl3945_grab_nic_access(priv))
		iwl3945_release_nic_access(priv);
Z
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	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;
	}

2776 2777
	if (priv->is_open)
		queue_work(priv->workqueue, &priv->restart);
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	return;
}

C
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void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
Z
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			    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;
	}
}

2813
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
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#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
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static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Z
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{
	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
2847
static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Z
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{
	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
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static int iwl3945_get_measurement(struct iwl3945_priv *priv,
Z
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			       struct ieee80211_measurement_params *params,
			       u8 type)
{
C
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	struct iwl3945_spectrum_cmd spectrum;
	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
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		.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
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2882
	if (iwl3945_is_associated(priv))
Z
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2883
		add_time =
C
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2884
		    iwl3945_usecs_to_beacons(
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			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
2897
	if (iwl3945_is_associated(priv))
Z
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		spectrum.start_time =
C
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2899
		    iwl3945_add_beacon_time(priv->last_beacon_time,
Z
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2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911
				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
2912
	rc = iwl3945_send_cmd_sync(priv, &cmd);
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	if (rc)
		return rc;

C
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	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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	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) {
2926 2927
			IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
						res->u.spectrum.id);
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			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
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static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
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2947
{
C
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	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_alive_resp *palive;
Z
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2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962
	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");
		memcpy(&priv->card_alive_init,
		       &pkt->u.alive_frame,
C
Christoph Hellwig 已提交
2963
		       sizeof(struct iwl3945_init_alive_resp));
Z
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		pwork = &priv->init_alive_start;
	} else {
		IWL_DEBUG_INFO("Runtime Alive received.\n");
		memcpy(&priv->card_alive, &pkt->u.alive_frame,
C
Christoph Hellwig 已提交
2968
		       sizeof(struct iwl3945_alive_resp));
Z
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		pwork = &priv->alive_start;
C
Christoph Hellwig 已提交
2970
		iwl3945_disable_events(priv);
Z
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2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981
	}

	/* 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");
}

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static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
				 struct iwl3945_rx_mem_buffer *rxb)
Z
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2984
{
C
Christoph Hellwig 已提交
2985
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
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2986 2987 2988 2989 2990

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

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Christoph Hellwig 已提交
2991 2992
static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
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2993
{
C
Christoph Hellwig 已提交
2994
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
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2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006

	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
3007
static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
Z
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3008
{
C
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3009 3010 3011
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
	struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
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	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
3018 3019
static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
					  struct iwl3945_rx_mem_buffer *rxb)
Z
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3020
{
3021
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
C
Christoph Hellwig 已提交
3022 3023
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
Z
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3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035

	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
3036 3037
static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
				  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3038
{
3039
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3040 3041
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
Z
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3042 3043 3044 3045 3046
	IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}

C
Christoph Hellwig 已提交
3047 3048
static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
					     struct iwl3945_rx_mem_buffer *rxb)
Z
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3049
{
C
Christoph Hellwig 已提交
3050
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
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3051 3052 3053
	IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
			"notification for %s:\n",
			le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
C
Christoph Hellwig 已提交
3054
	iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
Z
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3055 3056
}

C
Christoph Hellwig 已提交
3057
static void iwl3945_bg_beacon_update(struct work_struct *work)
Z
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3058
{
C
Christoph Hellwig 已提交
3059 3060
	struct iwl3945_priv *priv =
		container_of(work, struct iwl3945_priv, beacon_update);
Z
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3061 3062 3063
	struct sk_buff *beacon;

	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3064
	beacon = ieee80211_beacon_get(priv->hw, priv->vif);
Z
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3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078

	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
3079
	iwl3945_send_beacon_cmd(priv);
Z
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3080 3081
}

C
Christoph Hellwig 已提交
3082 3083
static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3084
{
3085
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3086 3087
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Z
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	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

3099
	if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
Z
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3100 3101 3102 3103 3104
	    (!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
3105 3106
static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
			      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3107
{
3108
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3109 3110 3111
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanreq_notification *notif =
	    (struct iwl3945_scanreq_notification *)pkt->u.raw;
Z
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3112 3113 3114 3115 3116 3117

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

/* Service SCAN_START_NOTIFICATION (0x82) */
C
Christoph Hellwig 已提交
3118 3119
static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3120
{
C
Christoph Hellwig 已提交
3121 3122 3123
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanstart_notification *notif =
	    (struct iwl3945_scanstart_notification *)pkt->u.raw;
Z
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3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134
	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
3135 3136
static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
				      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3137
{
C
Christoph Hellwig 已提交
3138 3139 3140
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanresults_notification *notif =
	    (struct iwl3945_scanresults_notification *)pkt->u.raw;
Z
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3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155

	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;
3156
	priv->next_scan_jiffies = 0;
Z
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3157 3158 3159
}

/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
C
Christoph Hellwig 已提交
3160 3161
static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
				       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3162
{
C
Christoph Hellwig 已提交
3163 3164
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
Z
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3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177

	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",
3178 3179
		       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
							"2.4" : "5.2",
Z
Zhu Yi 已提交
3180 3181 3182
		       jiffies_to_msecs(elapsed_jiffies
					(priv->scan_pass_start, jiffies)));

3183 3184 3185 3186 3187 3188 3189
	/* 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
3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203

	/* 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;
3204
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222
	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
3223 3224
static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3225
{
C
Christoph Hellwig 已提交
3226
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3227 3228 3229 3230 3231 3232 3233
	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
3234
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
		    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
3248
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259

	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
3260
 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Z
Zhu Yi 已提交
3261 3262 3263 3264 3265 3266 3267
 *
 * 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
3268
static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3269
{
C
Christoph Hellwig 已提交
3270 3271 3272 3273
	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
3274
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3275 3276
	    iwl3945_rx_spectrum_measure_notif;
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Z
Zhu Yi 已提交
3277
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
C
Christoph Hellwig 已提交
3278 3279
	    iwl3945_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Z
Zhu Yi 已提交
3280

3281 3282 3283 3284
	/*
	 * 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
3285
	 */
C
Christoph Hellwig 已提交
3286 3287
	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
3288

C
Christoph Hellwig 已提交
3289 3290
	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
3291
	priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
C
Christoph Hellwig 已提交
3292
	    iwl3945_rx_scan_results_notif;
Z
Zhu Yi 已提交
3293
	priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3294 3295
	    iwl3945_rx_scan_complete_notif;
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Z
Zhu Yi 已提交
3296

3297
	/* Set up hardware specific Rx handlers */
C
Christoph Hellwig 已提交
3298
	iwl3945_hw_rx_handler_setup(priv);
Z
Zhu Yi 已提交
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 3329 3330 3331 3332
/**
 * 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
3333
/**
C
Christoph Hellwig 已提交
3334
 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Z
Zhu Yi 已提交
3335 3336 3337 3338 3339 3340
 * @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
3341 3342
static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3343
{
C
Christoph Hellwig 已提交
3344
	struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3345 3346 3347 3348 3349
	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
	int txq_id = SEQ_TO_QUEUE(sequence);
	int index = SEQ_TO_INDEX(sequence);
	int huge = sequence & SEQ_HUGE_FRAME;
	int cmd_index;
C
Christoph Hellwig 已提交
3350
	struct iwl3945_cmd *cmd;
Z
Zhu Yi 已提交
3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364

	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;

3365
	iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Z
Zhu Yi 已提交
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 3391 3392 3393 3394

	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.
 *
3395
 * During initialization, the host sets up the READ queue position to the first
Z
Zhu Yi 已提交
3396 3397
 * INDEX position, and WRITE to the last (READ - 1 wrapped)
 *
3398
 * When the firmware places a packet in a buffer, it will advance the READ index
Z
Zhu Yi 已提交
3399 3400 3401 3402 3403 3404 3405
 * 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
3406
 *   to replenish the iwl->rxq->rx_free.
C
Christoph Hellwig 已提交
3407
 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Z
Zhu Yi 已提交
3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419
 *   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:
 *
3420 3421
 * 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
3422
 *                            iwl3945_rx_queue_restock
3423
 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Z
Zhu Yi 已提交
3424 3425
 *                            queue, updates firmware pointers, and updates
 *                            the WRITE index.  If insufficient rx_free buffers
C
Christoph Hellwig 已提交
3426
 *                            are available, schedules iwl3945_rx_replenish
Z
Zhu Yi 已提交
3427 3428
 *
 * -- enable interrupts --
3429
 * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
Z
Zhu Yi 已提交
3430 3431
 *                            READ INDEX, detaching the SKB from the pool.
 *                            Moves the packet buffer from queue to rx_used.
C
Christoph Hellwig 已提交
3432
 *                            Calls iwl3945_rx_queue_restock to refill any empty
Z
Zhu Yi 已提交
3433 3434 3435 3436 3437 3438
 *                            slots.
 * ...
 *
 */

/**
C
Christoph Hellwig 已提交
3439
 * iwl3945_rx_queue_space - Return number of free slots available in queue.
Z
Zhu Yi 已提交
3440
 */
C
Christoph Hellwig 已提交
3441
static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453
{
	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
3454
 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
Z
Zhu Yi 已提交
3455
 */
C
Christoph Hellwig 已提交
3456
int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3457 3458 3459 3460 3461 3462 3463 3464 3465 3466
{
	u32 reg = 0;
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&q->lock, flags);

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

3467
	/* If power-saving is in use, make sure device is awake */
Z
Zhu Yi 已提交
3468
	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
C
Christoph Hellwig 已提交
3469
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3470 3471

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
C
Christoph Hellwig 已提交
3472
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3473 3474 3475 3476
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			goto exit_unlock;
		}

C
Christoph Hellwig 已提交
3477
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3478 3479 3480
		if (rc)
			goto exit_unlock;

3481
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3482
		iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
Z
Zhu Yi 已提交
3483
				     q->write & ~0x7);
C
Christoph Hellwig 已提交
3484
		iwl3945_release_nic_access(priv);
3485 3486

	/* Else device is assumed to be awake */
Z
Zhu Yi 已提交
3487
	} else
3488
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3489
		iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
Z
Zhu Yi 已提交
3490 3491 3492 3493 3494 3495 3496 3497 3498 3499


	q->need_update = 0;

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

/**
3500
 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Z
Zhu Yi 已提交
3501
 */
C
Christoph Hellwig 已提交
3502
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3503 3504 3505 3506 3507 3508
					  dma_addr_t dma_addr)
{
	return cpu_to_le32((u32)dma_addr);
}

/**
C
Christoph Hellwig 已提交
3509
 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Z
Zhu Yi 已提交
3510
 *
3511
 * If there are slots in the RX queue that need to be restocked,
Z
Zhu Yi 已提交
3512
 * and we have free pre-allocated buffers, fill the ranks as much
3513
 * as we can, pulling from rx_free.
Z
Zhu Yi 已提交
3514 3515 3516 3517 3518
 *
 * 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
3519
static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3520
{
C
Christoph Hellwig 已提交
3521
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3522
	struct list_head *element;
C
Christoph Hellwig 已提交
3523
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3524 3525 3526 3527 3528
	unsigned long flags;
	int write, rc;

	spin_lock_irqsave(&rxq->lock, flags);
	write = rxq->write & ~0x7;
C
Christoph Hellwig 已提交
3529
	while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3530
		/* Get next free Rx buffer, remove from free list */
Z
Zhu Yi 已提交
3531
		element = rxq->rx_free.next;
C
Christoph Hellwig 已提交
3532
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
Z
Zhu Yi 已提交
3533
		list_del(element);
3534 3535

		/* Point to Rx buffer via next RBD in circular buffer */
C
Christoph Hellwig 已提交
3536
		rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
Z
Zhu Yi 已提交
3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547
		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);


3548 3549
	/* 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
3550 3551 3552 3553 3554
	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
3555
		rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
Z
Zhu Yi 已提交
3556 3557 3558 3559 3560 3561 3562 3563
		if (rc)
			return rc;
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
3564
 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Z
Zhu Yi 已提交
3565 3566 3567
 *
 * When moving to rx_free an SKB is allocated for the slot.
 *
C
Christoph Hellwig 已提交
3568
 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3569
 * This is called as a scheduled work item (except for during initialization)
Z
Zhu Yi 已提交
3570
 */
3571
static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3572
{
C
Christoph Hellwig 已提交
3573
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3574
	struct list_head *element;
C
Christoph Hellwig 已提交
3575
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3576 3577 3578 3579
	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
3580
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3581 3582

		/* Alloc a new receive buffer */
Z
Zhu Yi 已提交
3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593
		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
3594 3595 3596 3597 3598 3599 3600 3601 3602

		/* 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
3603 3604
		priv->alloc_rxb_skb++;
		list_del(element);
3605 3606

		/* Get physical address of RB/SKB */
Z
Zhu Yi 已提交
3607 3608 3609 3610 3611 3612 3613
		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);
3614 3615 3616 3617 3618
}

/*
 * this should be called while priv->lock is locked
 */
3619
static void __iwl3945_rx_replenish(void *data)
3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633
{
	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
3634 3635

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
3636
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3637 3638 3639 3640
	spin_unlock_irqrestore(&priv->lock, flags);
}

/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3641
 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
Z
Zhu Yi 已提交
3642 3643 3644
 * 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
3645
static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661
{
	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
3662
int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3663
{
C
Christoph Hellwig 已提交
3664
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3665 3666 3667 3668 3669 3670
	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);
3671 3672

	/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
Z
Zhu Yi 已提交
3673 3674 3675
	rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
	if (!rxq->bd)
		return -ENOMEM;
3676

Z
Zhu Yi 已提交
3677 3678 3679
	/* 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);
3680

Z
Zhu Yi 已提交
3681 3682 3683 3684 3685 3686 3687 3688
	/* 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
3689
void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
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 3732 3733 3734 3735
{
	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
3736
int iwl3945_calc_db_from_ratio(int sig_ratio)
Z
Zhu Yi 已提交
3737
{
3738 3739
	/* 1000:1 or higher just report as 60 dB */
	if (sig_ratio >= 1000)
Z
Zhu Yi 已提交
3740 3741
		return 60;

3742
	/* 100:1 or higher, divide by 10 and use table,
Z
Zhu Yi 已提交
3743
	 *   add 20 dB to make up for divide by 10 */
3744
	if (sig_ratio >= 100)
3745
		return 20 + (int)ratio2dB[sig_ratio/10];
Z
Zhu Yi 已提交
3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761

	/* 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
3762
int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Z
Zhu Yi 已提交
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 3793 3794 3795 3796
{
	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;
}

/**
3797
 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Z
Zhu Yi 已提交
3798 3799 3800 3801 3802
 *
 * 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
3803
static void iwl3945_rx_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3804
{
C
Christoph Hellwig 已提交
3805 3806 3807
	struct iwl3945_rx_mem_buffer *rxb;
	struct iwl3945_rx_packet *pkt;
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3808 3809 3810
	u32 r, i;
	int reclaim;
	unsigned long flags;
3811
	u8 fill_rx = 0;
M
Mohamed Abbas 已提交
3812
	u32 count = 8;
Z
Zhu Yi 已提交
3813

3814 3815
	/* 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
3816
	r = iwl3945_hw_get_rx_read(priv);
Z
Zhu Yi 已提交
3817 3818
	i = rxq->read;

3819 3820
	if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
		fill_rx = 1;
Z
Zhu Yi 已提交
3821 3822 3823 3824 3825 3826 3827
	/* 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];

3828
		/* If an RXB doesn't have a Rx queue slot associated with it,
Z
Zhu Yi 已提交
3829 3830 3831 3832 3833 3834 3835 3836 3837
		 * 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);
C
Christoph Hellwig 已提交
3838
		pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851

		/* 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
3852
		 *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
Z
Zhu Yi 已提交
3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866
		if (priv->rx_handlers[pkt->hdr.cmd]) {
			IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
				"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 */
			IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
				"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) {
3867 3868
			/* Invoke any callbacks, transfer the skb to caller, and
			 * fire off the (possibly) blocking iwl3945_send_cmd()
Z
Zhu Yi 已提交
3869 3870
			 * as we reclaim the driver command queue */
			if (rxb && rxb->skb)
C
Christoph Hellwig 已提交
3871
				iwl3945_tx_cmd_complete(priv, rxb);
Z
Zhu Yi 已提交
3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890
			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;
3891 3892 3893 3894 3895 3896 3897 3898 3899 3900
		/* 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
3901 3902 3903 3904
	}

	/* Backtrack one entry */
	priv->rxq.read = i;
C
Christoph Hellwig 已提交
3905
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3906 3907
}

3908 3909 3910
/**
 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
 */
C
Christoph Hellwig 已提交
3911 3912
static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
				  struct iwl3945_tx_queue *txq)
Z
Zhu Yi 已提交
3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925
{
	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
3926
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3927 3928 3929

		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
3930
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3931 3932 3933 3934 3935
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			return rc;
		}

		/* restore this queue's parameters in nic hardware. */
C
Christoph Hellwig 已提交
3936
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3937 3938
		if (rc)
			return rc;
C
Christoph Hellwig 已提交
3939
		iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
3940
				     txq->q.write_ptr | (txq_id << 8));
C
Christoph Hellwig 已提交
3941
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
3942 3943 3944 3945

	/* 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
3946
		iwl3945_write32(priv, HBUS_TARG_WRPTR,
3947
			    txq->q.write_ptr | (txq_id << 8));
Z
Zhu Yi 已提交
3948 3949 3950 3951 3952 3953

	txq->need_update = 0;

	return rc;
}

3954
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3955
static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
3956 3957
{
	IWL_DEBUG_RADIO("RX CONFIG:\n");
C
Christoph Hellwig 已提交
3958
	iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Z
Zhu Yi 已提交
3959 3960 3961 3962 3963 3964 3965 3966
	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
3967 3968
	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
3969 3970 3971 3972
	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

C
Christoph Hellwig 已提交
3973
static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3974 3975 3976
{
	IWL_DEBUG_ISR("Enabling interrupts\n");
	set_bit(STATUS_INT_ENABLED, &priv->status);
C
Christoph Hellwig 已提交
3977
	iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Z
Zhu Yi 已提交
3978 3979
}

3980 3981 3982 3983

/* call this function to flush any scheduled tasklet */
static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
{
T
Tomas Winkler 已提交
3984
	/* wait to make sure we flush pending tasklet*/
3985 3986 3987 3988 3989
	synchronize_irq(priv->pci_dev->irq);
	tasklet_kill(&priv->irq_tasklet);
}


C
Christoph Hellwig 已提交
3990
static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3991 3992 3993 3994
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
C
Christoph Hellwig 已提交
3995
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
3996 3997 3998

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
C
Christoph Hellwig 已提交
3999 4000
	iwl3945_write32(priv, CSR_INT, 0xffffffff);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Z
Zhu Yi 已提交
4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026
	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
4027
static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4028 4029 4030 4031 4032 4033 4034 4035
{
	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
4036
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4037 4038 4039 4040
		IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4041
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4042 4043 4044 4045 4046
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

C
Christoph Hellwig 已提交
4047
	count = iwl3945_read_targ_mem(priv, base);
Z
Zhu Yi 已提交
4048 4049 4050

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
		IWL_ERROR("Start IWL Error Log Dump:\n");
4051
		IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
Z
Zhu Yi 已提交
4052 4053 4054 4055 4056 4057 4058
	}

	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
4059
		desc = iwl3945_read_targ_mem(priv, base + i);
Z
Zhu Yi 已提交
4060
		time =
C
Christoph Hellwig 已提交
4061
		    iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Z
Zhu Yi 已提交
4062
		blink1 =
C
Christoph Hellwig 已提交
4063
		    iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Z
Zhu Yi 已提交
4064
		blink2 =
C
Christoph Hellwig 已提交
4065
		    iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Z
Zhu Yi 已提交
4066
		ilink1 =
C
Christoph Hellwig 已提交
4067
		    iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Z
Zhu Yi 已提交
4068
		ilink2 =
C
Christoph Hellwig 已提交
4069
		    iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Z
Zhu Yi 已提交
4070
		data1 =
C
Christoph Hellwig 已提交
4071
		    iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Z
Zhu Yi 已提交
4072 4073 4074 4075 4076 4077 4078

		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
4079
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4080 4081 4082

}

4083
#define EVENT_START_OFFSET  (6 * sizeof(u32))
Z
Zhu Yi 已提交
4084 4085

/**
C
Christoph Hellwig 已提交
4086
 * iwl3945_print_event_log - Dump error event log to syslog
Z
Zhu Yi 已提交
4087
 *
C
Christoph Hellwig 已提交
4088
 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
Z
Zhu Yi 已提交
4089
 */
C
Christoph Hellwig 已提交
4090
static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
Z
Zhu Yi 已提交
4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113
				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
4114
		ev = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4115
		ptr += sizeof(u32);
C
Christoph Hellwig 已提交
4116
		time = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4117 4118 4119 4120
		ptr += sizeof(u32);
		if (mode == 0)
			IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
		else {
C
Christoph Hellwig 已提交
4121
			data = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4122 4123 4124 4125 4126 4127
			ptr += sizeof(u32);
			IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
		}
	}
}

C
Christoph Hellwig 已提交
4128
static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4129 4130 4131 4132 4133 4134 4135 4136 4137 4138
{
	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
4139
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4140 4141 4142 4143
		IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4144
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4145 4146 4147 4148 4149 4150
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

	/* event log header */
C
Christoph Hellwig 已提交
4151 4152 4153 4154
	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
4155 4156 4157 4158 4159

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
4160
		IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
C
Christoph Hellwig 已提交
4161
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4162 4163 4164
		return;
	}

4165
	IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
Z
Zhu Yi 已提交
4166 4167 4168 4169 4170
		  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
4171
		iwl3945_print_event_log(priv, next_entry,
Z
Zhu Yi 已提交
4172 4173 4174
				    capacity - next_entry, mode);

	/* (then/else) start at top of log */
C
Christoph Hellwig 已提交
4175
	iwl3945_print_event_log(priv, 0, next_entry, mode);
Z
Zhu Yi 已提交
4176

C
Christoph Hellwig 已提交
4177
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4178 4179 4180
}

/**
C
Christoph Hellwig 已提交
4181
 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Z
Zhu Yi 已提交
4182
 */
C
Christoph Hellwig 已提交
4183
static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4184
{
C
Christoph Hellwig 已提交
4185
	/* Set the FW error flag -- cleared on iwl3945_down */
Z
Zhu Yi 已提交
4186 4187 4188 4189 4190
	set_bit(STATUS_FW_ERROR, &priv->status);

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

4191
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4192 4193 4194 4195
	if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
		iwl3945_dump_nic_error_log(priv);
		iwl3945_dump_nic_event_log(priv);
		iwl3945_print_rx_config_cmd(&priv->staging_rxon);
Z
Zhu Yi 已提交
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208
	}
#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
4209
		if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4210 4211 4212 4213 4214 4215 4216 4217
			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
4218
static void iwl3945_error_recovery(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4219 4220 4221 4222 4223 4224
{
	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
4225
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
4226

C
Christoph Hellwig 已提交
4227
	iwl3945_add_station(priv, priv->bssid, 1, 0);
Z
Zhu Yi 已提交
4228 4229 4230 4231 4232 4233 4234

	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
4235
static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4236 4237 4238 4239
{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
4240
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
4241 4242 4243 4244 4245 4246 4247 4248
	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
4249 4250
	inta = iwl3945_read32(priv, CSR_INT);
	iwl3945_write32(priv, CSR_INT, inta);
Z
Zhu Yi 已提交
4251 4252 4253 4254

	/* 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
4255 4256
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Z
Zhu Yi 已提交
4257

4258
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4259
	if (iwl3945_debug_level & IWL_DL_ISR) {
4260 4261
		/* just for debug */
		inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
Z
Zhu Yi 已提交
4262 4263 4264 4265 4266 4267 4268 4269 4270
		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
4271
	if (inta_fh & CSR39_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
4272
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
4273
	if (inta_fh & CSR39_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
4274 4275 4276 4277 4278 4279 4280
		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
4281
		iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
4282

C
Christoph Hellwig 已提交
4283
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4284 4285 4286 4287 4288 4289 4290 4291

		handled |= CSR_INT_BIT_HW_ERR;

		spin_unlock_irqrestore(&priv->lock, flags);

		return;
	}

4292
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4293
	if (iwl3945_debug_level & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
4294
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
4295 4296 4297
		if (inta & CSR_INT_BIT_SCD)
			IWL_DEBUG_ISR("Scheduler finished to transmit "
				      "the frame/frames.\n");
Z
Zhu Yi 已提交
4298 4299 4300 4301 4302 4303 4304

		/* 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 */
4305
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
4306 4307 4308 4309 4310

	/* 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
4311
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4312 4313 4314 4315 4316 4317
		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
4318 4319 4320 4321 4322 4323 4324
		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
4325 4326 4327 4328 4329 4330 4331 4332

		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
4333
		iwl3945_rx_handle(priv);
Z
Zhu Yi 已提交
4334 4335 4336 4337 4338 4339
		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
4340 4341 4342
		iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
		if (!iwl3945_grab_nic_access(priv)) {
			iwl3945_write_direct32(priv,
Z
Zhu Yi 已提交
4343 4344
					     FH_TCSR_CREDIT
					     (ALM_FH_SRVC_CHNL), 0x0);
C
Christoph Hellwig 已提交
4345
			iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359
		}
		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 */
4360 4361 4362
	/* 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
4363

4364
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4365 4366 4367 4368
	if (iwl3945_debug_level & (IWL_DL_ISR)) {
		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
4369 4370 4371 4372 4373 4374 4375
		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
4376
static irqreturn_t iwl3945_isr(int irq, void *data)
Z
Zhu Yi 已提交
4377
{
C
Christoph Hellwig 已提交
4378
	struct iwl3945_priv *priv = data;
Z
Zhu Yi 已提交
4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389
	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
4390 4391
	inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4392 4393

	/* Discover which interrupts are active/pending */
C
Christoph Hellwig 已提交
4394 4395
	inta = iwl3945_read32(priv, CSR_INT);
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406

	/* 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
4407
		IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
4408
		goto unplugged;
Z
Zhu Yi 已提交
4409 4410 4411 4412 4413
	}

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

4414 4415
	inta &= ~CSR_INT_BIT_SCD;

C
Christoph Hellwig 已提交
4416
	/* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4417 4418
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);
4419
unplugged:
Z
Zhu Yi 已提交
4420 4421 4422 4423 4424 4425
	spin_unlock(&priv->lock);

	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
4426 4427 4428
	/* 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
4429 4430 4431 4432 4433 4434
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

/************************** EEPROM BANDS ****************************
 *
C
Christoph Hellwig 已提交
4435
 * The iwl3945_eeprom_band definitions below provide the mapping from the
Z
Zhu Yi 已提交
4436 4437 4438
 * EEPROM contents to the specific channel number supported for each
 * band.
 *
C
Christoph Hellwig 已提交
4439
 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
Z
Zhu Yi 已提交
4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464
 * 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
4465
static const u8 iwl3945_eeprom_band_1[14] = {
Z
Zhu Yi 已提交
4466 4467 4468 4469
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

/* 5.2 GHz bands */
4470
static const u8 iwl3945_eeprom_band_2[] = {	/* 4915-5080MHz */
Z
Zhu Yi 已提交
4471 4472 4473
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

4474
static const u8 iwl3945_eeprom_band_3[] = {	/* 5170-5320MHz */
Z
Zhu Yi 已提交
4475 4476 4477
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

C
Christoph Hellwig 已提交
4478
static const u8 iwl3945_eeprom_band_4[] = {	/* 5500-5700MHz */
Z
Zhu Yi 已提交
4479 4480 4481
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

C
Christoph Hellwig 已提交
4482
static const u8 iwl3945_eeprom_band_5[] = {	/* 5725-5825MHz */
Z
Zhu Yi 已提交
4483 4484 4485
	145, 149, 153, 157, 161, 165
};

C
Christoph Hellwig 已提交
4486
static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
Z
Zhu Yi 已提交
4487
				    int *eeprom_ch_count,
C
Christoph Hellwig 已提交
4488
				    const struct iwl3945_eeprom_channel
Z
Zhu Yi 已提交
4489 4490 4491 4492 4493
				    **eeprom_ch_info,
				    const u8 **eeprom_ch_index)
{
	switch (band) {
	case 1:		/* 2.4GHz band */
C
Christoph Hellwig 已提交
4494
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
Z
Zhu Yi 已提交
4495
		*eeprom_ch_info = priv->eeprom.band_1_channels;
C
Christoph Hellwig 已提交
4496
		*eeprom_ch_index = iwl3945_eeprom_band_1;
Z
Zhu Yi 已提交
4497
		break;
4498
	case 2:		/* 4.9GHz band */
C
Christoph Hellwig 已提交
4499
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
Z
Zhu Yi 已提交
4500
		*eeprom_ch_info = priv->eeprom.band_2_channels;
C
Christoph Hellwig 已提交
4501
		*eeprom_ch_index = iwl3945_eeprom_band_2;
Z
Zhu Yi 已提交
4502 4503
		break;
	case 3:		/* 5.2GHz band */
C
Christoph Hellwig 已提交
4504
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
Z
Zhu Yi 已提交
4505
		*eeprom_ch_info = priv->eeprom.band_3_channels;
C
Christoph Hellwig 已提交
4506
		*eeprom_ch_index = iwl3945_eeprom_band_3;
Z
Zhu Yi 已提交
4507
		break;
4508
	case 4:		/* 5.5GHz band */
C
Christoph Hellwig 已提交
4509
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
Z
Zhu Yi 已提交
4510
		*eeprom_ch_info = priv->eeprom.band_4_channels;
C
Christoph Hellwig 已提交
4511
		*eeprom_ch_index = iwl3945_eeprom_band_4;
Z
Zhu Yi 已提交
4512
		break;
4513
	case 5:		/* 5.7GHz band */
C
Christoph Hellwig 已提交
4514
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
Z
Zhu Yi 已提交
4515
		*eeprom_ch_info = priv->eeprom.band_5_channels;
C
Christoph Hellwig 已提交
4516
		*eeprom_ch_index = iwl3945_eeprom_band_5;
Z
Zhu Yi 已提交
4517 4518 4519 4520 4521 4522 4523
		break;
	default:
		BUG();
		return;
	}
}

4524 4525 4526 4527 4528
/**
 * iwl3945_get_channel_info - Find driver's private channel info
 *
 * Based on band and channel number.
 */
C
Christoph Hellwig 已提交
4529
const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4530
						    enum ieee80211_band band, u16 channel)
Z
Zhu Yi 已提交
4531 4532 4533
{
	int i;

4534 4535
	switch (band) {
	case IEEE80211_BAND_5GHZ:
Z
Zhu Yi 已提交
4536 4537 4538 4539 4540 4541
		for (i = 14; i < priv->channel_count; i++) {
			if (priv->channel_info[i].channel == channel)
				return &priv->channel_info[i];
		}
		break;

4542
	case IEEE80211_BAND_2GHZ:
Z
Zhu Yi 已提交
4543 4544 4545
		if (channel >= 1 && channel <= 14)
			return &priv->channel_info[channel - 1];
		break;
4546 4547
	case IEEE80211_NUM_BANDS:
		WARN_ON(1);
Z
Zhu Yi 已提交
4548 4549 4550 4551 4552 4553 4554 4555
	}

	return NULL;
}

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

4556 4557 4558
/**
 * iwl3945_init_channel_map - Set up driver's info for all possible channels
 */
C
Christoph Hellwig 已提交
4559
static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4560 4561 4562
{
	int eeprom_ch_count = 0;
	const u8 *eeprom_ch_index = NULL;
C
Christoph Hellwig 已提交
4563
	const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
Z
Zhu Yi 已提交
4564
	int band, ch;
C
Christoph Hellwig 已提交
4565
	struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580

	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
4581 4582 4583 4584 4585
	    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
4586 4587 4588

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

C
Christoph Hellwig 已提交
4589
	priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
Z
Zhu Yi 已提交
4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603
				     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
4604
		iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Z
Zhu Yi 已提交
4605 4606 4607 4608 4609
					&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];
4610 4611
			ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
			    IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637

			/* 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;

4638
			IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
Z
Zhu Yi 已提交
4639 4640 4641 4642
				       " %ddBm): Ad-Hoc %ssupported\n",
				       ch_info->channel,
				       is_channel_a_band(ch_info) ?
				       "5.2" : "2.4",
4643
				       CHECK_AND_PRINT(VALID),
Z
Zhu Yi 已提交
4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667
				       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++;
		}
	}

4668
	/* Set up txpower settings in driver for all channels */
Z
Zhu Yi 已提交
4669 4670 4671 4672 4673 4674
	if (iwl3945_txpower_set_from_eeprom(priv))
		return -EIO;

	return 0;
}

4675 4676 4677 4678 4679 4680 4681 4682 4683
/*
 * 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
4684 4685 4686
/* 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.  */
4687 4688 4689 4690 4691
#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
4692 4693 4694 4695 4696 4697 4698 4699

/* 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 */
4700
#define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)	/* msec */
Z
Zhu Yi 已提交
4701 4702 4703 4704 4705 4706 4707 4708 4709

/* 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
4710
#define IWL_SCAN_PROBE_MASK(n)	 (BIT(n) | (BIT(n) - BIT(1)))
4711

4712
static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
4713 4714
						enum ieee80211_band band,
						u8 n_probes)
Z
Zhu Yi 已提交
4715
{
4716
	if (band == IEEE80211_BAND_5GHZ)
4717 4718
		return IWL_ACTIVE_DWELL_TIME_52 +
			IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4719
	else
4720 4721
		return IWL_ACTIVE_DWELL_TIME_24 +
			IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
Z
Zhu Yi 已提交
4722 4723
}

4724 4725
static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
4726
{
4727
	u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Z
Zhu Yi 已提交
4728 4729 4730
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;

C
Christoph Hellwig 已提交
4731
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743
		/* 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;
}

4744 4745
static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
					 enum ieee80211_band band,
4746
				     u8 is_active, u8 n_probes,
C
Christoph Hellwig 已提交
4747
				     struct iwl3945_scan_channel *scan_ch)
Z
Zhu Yi 已提交
4748 4749
{
	const struct ieee80211_channel *channels = NULL;
4750
	const struct ieee80211_supported_band *sband;
C
Christoph Hellwig 已提交
4751
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4752 4753 4754 4755
	u16 passive_dwell = 0;
	u16 active_dwell = 0;
	int added, i;

4756 4757
	sband = iwl3945_get_band(priv, band);
	if (!sband)
Z
Zhu Yi 已提交
4758 4759
		return 0;

4760
	channels = sband->channels;
Z
Zhu Yi 已提交
4761

4762
	active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4763
	passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Z
Zhu Yi 已提交
4764

4765 4766 4767
	if (passive_dwell <= active_dwell)
		passive_dwell = active_dwell + 1;

4768
	for (i = 0, added = 0; i < sband->n_channels; i++) {
4769 4770 4771
		if (channels[i].flags & IEEE80211_CHAN_DISABLED)
			continue;

4772
		scan_ch->channel = channels[i].hw_value;
Z
Zhu Yi 已提交
4773

4774
		ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Z
Zhu Yi 已提交
4775
		if (!is_channel_valid(ch_info)) {
4776
			IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
Z
Zhu Yi 已提交
4777 4778 4779 4780
				       scan_ch->channel);
			continue;
		}

4781 4782 4783 4784 4785
		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
4786
		if (!is_active || is_channel_passive(ch_info) ||
4787
		    (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
Z
Zhu Yi 已提交
4788
			scan_ch->type = 0;	/* passive */
4789 4790 4791
			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
4792
			scan_ch->type = 1;	/* active */
4793
		}
Z
Zhu Yi 已提交
4794

4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807
		/* 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
4808

4809
		/* Set txpower levels to defaults */
Z
Zhu Yi 已提交
4810 4811 4812 4813
		scan_ch->tpc.dsp_atten = 110;
		/* scan_pwr_info->tpc.dsp_atten; */

		/*scan_pwr_info->tpc.tx_gain; */
4814
		if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4815 4816 4817 4818
			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
4819
			 * power level:
4820
			 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Z
Zhu Yi 已提交
4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837
			 */
		}

		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
4838
static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
4839 4840 4841 4842 4843
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
4844 4845 4846 4847 4848
		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
4849
			/*
4850
			 * If CCK != 1M then set short preamble rate flag.
Z
Zhu Yi 已提交
4851
			 */
C
Christoph Hellwig 已提交
4852
			rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4853
				0 : IEEE80211_RATE_SHORT_PREAMBLE;
Z
Zhu Yi 已提交
4854 4855 4856 4857 4858
		}
	}
}

/**
C
Christoph Hellwig 已提交
4859
 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Z
Zhu Yi 已提交
4860
 */
C
Christoph Hellwig 已提交
4861
static int iwl3945_init_geos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4862
{
C
Christoph Hellwig 已提交
4863
	struct iwl3945_channel_info *ch;
4864
	struct ieee80211_supported_band *sband;
Z
Zhu Yi 已提交
4865 4866 4867 4868 4869
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

4870 4871
	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Z
Zhu Yi 已提交
4872 4873 4874 4875 4876 4877 4878
		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);
4879
	if (!channels)
Z
Zhu Yi 已提交
4880 4881
		return -ENOMEM;

4882
	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Z
Zhu Yi 已提交
4883 4884 4885 4886 4887 4888 4889
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900
	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
4901 4902 4903 4904

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

C
Christoph Hellwig 已提交
4905
	iwl3945_init_hw_rates(priv, rates);
Z
Zhu Yi 已提交
4906

4907
	for (i = 0;  i < priv->channel_count; i++) {
Z
Zhu Yi 已提交
4908 4909
		ch = &priv->channel_info[i];

4910 4911
		/* FIXME: might be removed if scan is OK*/
		if (!is_channel_valid(ch))
Z
Zhu Yi 已提交
4912 4913 4914
			continue;

		if (is_channel_a_band(ch))
4915
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4916
		else
4917
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];
Z
Zhu Yi 已提交
4918

4919 4920 4921
		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4922 4923
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
4924
		geo_ch->hw_value = ch->channel;
Z
Zhu Yi 已提交
4925 4926

		if (is_channel_valid(ch)) {
4927 4928
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Z
Zhu Yi 已提交
4929

4930 4931
			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Z
Zhu Yi 已提交
4932 4933

			if (ch->flags & EEPROM_CHANNEL_RADAR)
4934
				geo_ch->flags |= IEEE80211_CHAN_RADAR;
Z
Zhu Yi 已提交
4935 4936 4937 4938

			if (ch->max_power_avg > priv->max_channel_txpower_limit)
				priv->max_channel_txpower_limit =
				    ch->max_power_avg;
4939
		} else {
4940
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951
		}

		/* 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
4952 4953
	}

T
Tomas Winkler 已提交
4954 4955
	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
Z
Zhu Yi 已提交
4956 4957 4958 4959
		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
4960
		 priv->cfg->sku &= ~IWL_SKU_A;
Z
Zhu Yi 已提交
4961 4962 4963 4964
	}

	printk(KERN_INFO DRV_NAME
	       ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4965 4966
	       priv->bands[IEEE80211_BAND_2GHZ].n_channels,
	       priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Z
Zhu Yi 已提交
4967

4968 4969 4970 4971 4972 4973
	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
4974 4975 4976 4977 4978 4979

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}

4980 4981 4982 4983 4984 4985 4986 4987 4988 4989
/*
 * 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
4990 4991 4992 4993 4994 4995
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

C
Christoph Hellwig 已提交
4996
static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4997
{
4998 4999 5000 5001 5002 5003
	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
5004 5005 5006
}

/**
C
Christoph Hellwig 已提交
5007
 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5008 5009
 *     looking at all data.
 */
5010
static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5011 5012 5013 5014 5015 5016 5017 5018
{
	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
5019
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5020 5021 5022
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5023
	iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
Z
Zhu Yi 已提交
5024 5025 5026 5027 5028 5029

	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
5030
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041
		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
5042
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5043 5044

	if (!errcnt)
5045
		IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Z
Zhu Yi 已提交
5046 5047 5048 5049 5050 5051

	return rc;
}


/**
C
Christoph Hellwig 已提交
5052
 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5053 5054 5055
 *   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
5056
static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5057 5058 5059 5060 5061 5062 5063 5064
{
	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
5065
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5066 5067 5068 5069 5070 5071 5072
	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
5073
		iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Z
Zhu Yi 已提交
5074
			i + RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5075
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088
		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
5089
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5090 5091 5092 5093 5094 5095

	return rc;
}


/**
C
Christoph Hellwig 已提交
5096
 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Z
Zhu Yi 已提交
5097 5098
 *    and verify its contents
 */
C
Christoph Hellwig 已提交
5099
static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5100 5101 5102 5103 5104 5105 5106 5107
{
	__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
5108
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5109 5110 5111 5112 5113 5114 5115 5116
	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
5117
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5118 5119 5120 5121 5122 5123 5124 5125
	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
5126
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5127 5128 5129 5130 5131 5132 5133
	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");

5134 5135 5136
	/* 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
5137 5138
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
5139
	rc = iwl3945_verify_inst_full(priv, image, len);
Z
Zhu Yi 已提交
5140 5141 5142 5143 5144 5145

	return rc;
}


/* check contents of special bootstrap uCode SRAM */
C
Christoph Hellwig 已提交
5146
static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5147 5148 5149 5150 5151 5152 5153 5154 5155
{
	__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
5156
	val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
Z
Zhu Yi 已提交
5157 5158
	for (reg = BSM_SRAM_LOWER_BOUND;
	     reg < BSM_SRAM_LOWER_BOUND + len;
5159
	     reg += sizeof(u32), image++) {
C
Christoph Hellwig 已提交
5160
		val = iwl3945_read_prph(priv, reg);
Z
Zhu Yi 已提交
5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176
		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
5177
 * iwl3945_load_bsm - Load bootstrap instructions
Z
Zhu Yi 已提交
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 5204 5205 5206 5207
 *
 * 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
5208
static int iwl3945_load_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227
{
	__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
5228
	 *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
C
Christoph Hellwig 已提交
5229
	 * NOTE:  iwl3945_initialize_alive_start() will replace these values,
Z
Zhu Yi 已提交
5230 5231 5232 5233 5234 5235 5236
	 *        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
5237
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5238 5239 5240
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5241 5242 5243 5244
	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
5245 5246 5247 5248 5249

	/* 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
5250
		_iwl3945_write_prph(priv, reg_offset,
Z
Zhu Yi 已提交
5251 5252
					  le32_to_cpu(*image));

C
Christoph Hellwig 已提交
5253
	rc = iwl3945_verify_bsm(priv);
Z
Zhu Yi 已提交
5254
	if (rc) {
C
Christoph Hellwig 已提交
5255
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5256 5257 5258 5259
		return rc;
	}

	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
C
Christoph Hellwig 已提交
5260 5261
	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
5262
				 RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5263
	iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Z
Zhu Yi 已提交
5264 5265 5266

	/* Load bootstrap code into instruction SRAM now,
	 *   to prepare to load "initialize" uCode */
C
Christoph Hellwig 已提交
5267
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5268 5269 5270 5271
		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
5272
		done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
Z
Zhu Yi 已提交
5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285
		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
5286
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5287 5288
		BSM_WR_CTRL_REG_BIT_START_EN);

C
Christoph Hellwig 已提交
5289
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5290 5291 5292 5293

	return 0;
}

C
Christoph Hellwig 已提交
5294
static void iwl3945_nic_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5295 5296
{
	/* Remove all resets to allow NIC to operate */
C
Christoph Hellwig 已提交
5297
	iwl3945_write32(priv, CSR_RESET, 0);
Z
Zhu Yi 已提交
5298 5299 5300
}

/**
C
Christoph Hellwig 已提交
5301
 * iwl3945_read_ucode - Read uCode images from disk file.
Z
Zhu Yi 已提交
5302 5303 5304
 *
 * Copy into buffers for card to fetch via bus-mastering
 */
C
Christoph Hellwig 已提交
5305
static int iwl3945_read_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5306
{
C
Christoph Hellwig 已提交
5307
	struct iwl3945_ucode *ucode;
5308
	int ret = -EINVAL, index;
Z
Zhu Yi 已提交
5309 5310
	const struct firmware *ucode_raw;
	/* firmware file name contains uCode/driver compatibility version */
5311 5312 5313 5314
	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
5315 5316
	u8 *src;
	size_t len;
5317
	u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
Z
Zhu Yi 已提交
5318 5319 5320

	/* Ask kernel firmware_class module to get the boot firmware off disk.
	 * request_firmware() is synchronous, file is in memory on return. */
5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338
	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
5339 5340
	}

5341 5342
	if (ret < 0)
		goto error;
Z
Zhu Yi 已提交
5343 5344 5345 5346

	/* Make sure that we got at least our header! */
	if (ucode_raw->size < sizeof(*ucode)) {
		IWL_ERROR("File size way too small!\n");
5347
		ret = -EINVAL;
Z
Zhu Yi 已提交
5348 5349 5350 5351 5352 5353
		goto err_release;
	}

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

5354
	priv->ucode_ver = le32_to_cpu(ucode->ver);
5355
	api_ver = IWL_UCODE_API(priv->ucode_ver);
Z
Zhu Yi 已提交
5356 5357 5358 5359 5360 5361
	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);

5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380
	/* 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",
5381 5382 5383 5384
		       IWL_UCODE_MAJOR(priv->ucode_ver),
		       IWL_UCODE_MINOR(priv->ucode_ver),
		       IWL_UCODE_API(priv->ucode_ver),
		       IWL_UCODE_SERIAL(priv->ucode_ver));
5385 5386
	IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
		       priv->ucode_ver);
5387 5388 5389 5390 5391
	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
5392

5393

Z
Zhu Yi 已提交
5394 5395 5396 5397 5398 5399 5400
	/* 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);
5401
		ret = -EINVAL;
Z
Zhu Yi 已提交
5402 5403 5404 5405 5406
		goto err_release;
	}

	/* Verify that uCode images will fit in card's SRAM */
	if (inst_size > IWL_MAX_INST_SIZE) {
5407 5408 5409
		IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
			       inst_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5410 5411 5412 5413
		goto err_release;
	}

	if (data_size > IWL_MAX_DATA_SIZE) {
5414 5415 5416
		IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
			       data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5417 5418 5419
		goto err_release;
	}
	if (init_size > IWL_MAX_INST_SIZE) {
5420 5421 5422
		IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
				init_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5423 5424 5425
		goto err_release;
	}
	if (init_data_size > IWL_MAX_DATA_SIZE) {
5426 5427 5428
		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
5429 5430 5431
		goto err_release;
	}
	if (boot_size > IWL_MAX_BSM_SIZE) {
5432 5433 5434
		IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
				boot_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5435 5436 5437 5438 5439 5440 5441 5442 5443
		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;
5444
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
5445 5446

	priv->ucode_data.len = data_size;
5447
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
5448 5449

	priv->ucode_data_backup.len = data_size;
5450
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
5451

5452 5453 5454
	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
5455 5456

	/* Initialization instructions and data */
5457 5458
	if (init_size && init_data_size) {
		priv->ucode_init.len = init_size;
5459
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5460 5461

		priv->ucode_init_data.len = init_data_size;
5462
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5463 5464 5465 5466

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5467 5468

	/* Bootstrap (instructions only, no data) */
5469 5470
	if (boot_size) {
		priv->ucode_boot.len = boot_size;
5471
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
5472

5473 5474 5475
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5476 5477 5478 5479 5480 5481

	/* 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;
5482
	IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Z
Zhu Yi 已提交
5483 5484 5485 5486 5487
	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
5488
	 * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
Z
Zhu Yi 已提交
5489 5490
	src = &ucode->data[inst_size];
	len = priv->ucode_data.len;
5491
	IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Z
Zhu Yi 已提交
5492 5493 5494 5495 5496 5497 5498
	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;
5499 5500
		IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
			       len);
Z
Zhu Yi 已提交
5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525
		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");
5526
	ret = -ENOMEM;
C
Christoph Hellwig 已提交
5527
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
5528 5529 5530 5531 5532

 err_release:
	release_firmware(ucode_raw);

 error:
5533
	return ret;
Z
Zhu Yi 已提交
5534 5535 5536 5537
}


/**
C
Christoph Hellwig 已提交
5538
 * iwl3945_set_ucode_ptrs - Set uCode address location
Z
Zhu Yi 已提交
5539 5540 5541 5542 5543 5544 5545
 *
 * 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
5546
static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557
{
	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
5558
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5559 5560 5561 5562 5563 5564
	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
5565 5566 5567
	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
5568 5569
				 priv->ucode_data.len);

T
Tomas Winkler 已提交
5570
	/* Inst byte count must be last to set up, bit 31 signals uCode
Z
Zhu Yi 已提交
5571
	 *   that all new ptr/size info is in place */
C
Christoph Hellwig 已提交
5572
	iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5573 5574
				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);

C
Christoph Hellwig 已提交
5575
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5576 5577 5578 5579 5580 5581 5582 5583 5584

	spin_unlock_irqrestore(&priv->lock, flags);

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

	return rc;
}

/**
C
Christoph Hellwig 已提交
5585
 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5586 5587 5588 5589
 *
 * Called after REPLY_ALIVE notification received from "initialize" uCode.
 *
 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5590
 */
C
Christoph Hellwig 已提交
5591
static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603
{
	/* 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
5604
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5605 5606 5607 5608 5609 5610 5611 5612 5613 5614
		/* 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
5615
	if (iwl3945_set_ucode_ptrs(priv)) {
Z
Zhu Yi 已提交
5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627
		/* 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);
}


5628 5629 5630 5631
/* temporary */
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
				     struct sk_buff *skb);

Z
Zhu Yi 已提交
5632
/**
C
Christoph Hellwig 已提交
5633
 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5634
 *                   from protocol/runtime uCode (initialization uCode's
C
Christoph Hellwig 已提交
5635
 *                   Alive gets handled by iwl3945_init_alive_start()).
Z
Zhu Yi 已提交
5636
 */
C
Christoph Hellwig 已提交
5637
static void iwl3945_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654
{
	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
5655
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5656 5657 5658 5659 5660 5661
		/* 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
5662
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5663

C
Christoph Hellwig 已提交
5664
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5665
	if (rc) {
T
Tomas Winkler 已提交
5666
		IWL_WARNING("Can not read RFKILL status from adapter\n");
Z
Zhu Yi 已提交
5667 5668 5669
		return;
	}

C
Christoph Hellwig 已提交
5670
	rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
Z
Zhu Yi 已提交
5671
	IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
C
Christoph Hellwig 已提交
5672
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5673 5674 5675

	if (rfkill & 0x1) {
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
T
Tomas Winkler 已提交
5676
		/* if RFKILL is not on, then wait for thermal
Z
Zhu Yi 已提交
5677
		 * sensor in adapter to kick in */
C
Christoph Hellwig 已提交
5678
		while (iwl3945_hw_get_temperature(priv) == 0) {
Z
Zhu Yi 已提交
5679 5680 5681 5682 5683 5684 5685 5686 5687 5688
			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);

5689
	/* After the ALIVE response, we can send commands to 3945 uCode */
Z
Zhu Yi 已提交
5690 5691 5692 5693 5694
	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
5695
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
5696 5697
		return;

5698
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
5699 5700 5701 5702

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

C
Christoph Hellwig 已提交
5703
	iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Z
Zhu Yi 已提交
5704

C
Christoph Hellwig 已提交
5705 5706 5707
	if (iwl3945_is_associated(priv)) {
		struct iwl3945_rxon_cmd *active_rxon =
				(struct iwl3945_rxon_cmd *)(&priv->active_rxon);
Z
Zhu Yi 已提交
5708 5709 5710 5711 5712 5713

		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 */
5714
		iwl3945_connection_init_rx_config(priv, priv->iw_mode);
Z
Zhu Yi 已提交
5715 5716 5717
		memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	}

5718
	/* Configure Bluetooth device coexistence support */
C
Christoph Hellwig 已提交
5719
	iwl3945_send_bt_config(priv);
Z
Zhu Yi 已提交
5720 5721

	/* Configure the adapter for unassociated operation */
C
Christoph Hellwig 已提交
5722
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5723 5724 5725

	iwl3945_reg_txpower_periodic(priv);

5726 5727
	iwl3945_led_register(priv);

Z
Zhu Yi 已提交
5728
	IWL_DEBUG_INFO("ALIVE processing complete.\n");
5729
	set_bit(STATUS_READY, &priv->status);
5730
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
5731 5732

	if (priv->error_recovering)
C
Christoph Hellwig 已提交
5733
		iwl3945_error_recovery(priv);
Z
Zhu Yi 已提交
5734

5735 5736 5737 5738 5739 5740 5741 5742
	/* 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
5743 5744 5745 5746 5747 5748
	return;

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

C
Christoph Hellwig 已提交
5749
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
Z
Zhu Yi 已提交
5750

C
Christoph Hellwig 已提交
5751
static void __iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763
{
	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
5764
	iwl3945_led_unregister(priv);
C
Christoph Hellwig 已提交
5765
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5766 5767 5768 5769 5770 5771 5772 5773 5774 5775

	/* 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
5776
	iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
5777 5778

	/* tell the device to stop sending interrupts */
5779
	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5780
	iwl3945_disable_interrupts(priv);
5781 5782
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
5783 5784 5785 5786

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

C
Christoph Hellwig 已提交
5787
	/* If we have not previously called iwl3945_init() then
Z
Zhu Yi 已提交
5788
	 * clear all bits but the RF Kill and SUSPEND bits and return */
C
Christoph Hellwig 已提交
5789
	if (!iwl3945_is_init(priv)) {
Z
Zhu Yi 已提交
5790 5791 5792 5793
		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 |
5794 5795
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5796
			       test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5797 5798 5799
					STATUS_IN_SUSPEND |
				test_bit(STATUS_EXIT_PENDING, &priv->status) <<
					STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5800 5801 5802 5803 5804 5805 5806 5807 5808
		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 |
5809 5810
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5811 5812 5813
			test_bit(STATUS_IN_SUSPEND, &priv->status) <<
				STATUS_IN_SUSPEND |
			test_bit(STATUS_FW_ERROR, &priv->status) <<
5814 5815 5816
				STATUS_FW_ERROR |
			test_bit(STATUS_EXIT_PENDING, &priv->status) <<
				STATUS_EXIT_PENDING;
Z
Zhu Yi 已提交
5817 5818

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5819
	iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Z
Zhu Yi 已提交
5820 5821
	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
5822 5823
	iwl3945_hw_txq_ctx_stop(priv);
	iwl3945_hw_rxq_stop(priv);
Z
Zhu Yi 已提交
5824 5825

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5826 5827
	if (!iwl3945_grab_nic_access(priv)) {
		iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
Z
Zhu Yi 已提交
5828
					 APMG_CLK_VAL_DMA_CLK_RQT);
C
Christoph Hellwig 已提交
5829
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5830 5831 5832 5833 5834
	}
	spin_unlock_irqrestore(&priv->lock, flags);

	udelay(5);

C
Christoph Hellwig 已提交
5835 5836 5837
	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
5838 5839

 exit:
C
Christoph Hellwig 已提交
5840
	memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
Z
Zhu Yi 已提交
5841 5842 5843 5844 5845 5846

	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
5847
	iwl3945_clear_free_frames(priv);
Z
Zhu Yi 已提交
5848 5849
}

C
Christoph Hellwig 已提交
5850
static void iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5851 5852
{
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5853
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
5854
	mutex_unlock(&priv->mutex);
5855

C
Christoph Hellwig 已提交
5856
	iwl3945_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
5857 5858 5859 5860
}

#define MAX_HW_RESTARTS 5

C
Christoph Hellwig 已提交
5861
static int __iwl3945_up(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872
{
	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");
5873 5874 5875
		return -ENODEV;
	}

5876
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
T
Tomas Winkler 已提交
5877
		IWL_ERROR("ucode not available for device bring up\n");
5878 5879 5880
		return -EIO;
	}

5881 5882 5883 5884 5885 5886 5887 5888 5889 5890
	/* 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
5891
	}
5892

C
Christoph Hellwig 已提交
5893
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
5894

C
Christoph Hellwig 已提交
5895
	rc = iwl3945_hw_nic_init(priv);
Z
Zhu Yi 已提交
5896 5897 5898 5899 5900 5901
	if (rc) {
		IWL_ERROR("Unable to int nic\n");
		return rc;
	}

	/* make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
5902 5903
	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
5904 5905 5906
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
C
Christoph Hellwig 已提交
5907 5908
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
5909 5910

	/* really make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
5911 5912
	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
5913 5914 5915 5916 5917

	/* 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,
5918
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
5919

5920 5921 5922 5923
	/* 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
5924 5925
	for (i = 0; i < MAX_HW_RESTARTS; i++) {

C
Christoph Hellwig 已提交
5926
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5927 5928 5929 5930

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
C
Christoph Hellwig 已提交
5931
		rc = iwl3945_load_bsm(priv);
Z
Zhu Yi 已提交
5932 5933 5934 5935 5936 5937 5938

		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
5939
		iwl3945_nic_start(priv);
Z
Zhu Yi 已提交
5940 5941 5942 5943 5944 5945 5946

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

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
C
Christoph Hellwig 已提交
5947
	__iwl3945_down(priv);
5948
	clear_bit(STATUS_EXIT_PENDING, &priv->status);
Z
Zhu Yi 已提交
5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962

	/* 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
5963
static void iwl3945_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5964
{
C
Christoph Hellwig 已提交
5965 5966
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, init_alive_start.work);
Z
Zhu Yi 已提交
5967 5968 5969 5970 5971

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5972
	iwl3945_init_alive_start(priv);
Z
Zhu Yi 已提交
5973 5974 5975
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5976
static void iwl3945_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
5977
{
C
Christoph Hellwig 已提交
5978 5979
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, alive_start.work);
Z
Zhu Yi 已提交
5980 5981 5982 5983 5984

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5985
	iwl3945_alive_start(priv);
Z
Zhu Yi 已提交
5986 5987 5988
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
5989
static void iwl3945_bg_rf_kill(struct work_struct *work)
Z
Zhu Yi 已提交
5990
{
C
Christoph Hellwig 已提交
5991
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
Z
Zhu Yi 已提交
5992 5993 5994 5995 5996 5997 5998 5999

	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
6000
	if (!iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015
		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");
	}
6016

Z
Zhu Yi 已提交
6017
	mutex_unlock(&priv->mutex);
6018
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
6019 6020 6021 6022
}

#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)

C
Christoph Hellwig 已提交
6023
static void iwl3945_bg_scan_check(struct work_struct *data)
Z
Zhu Yi 已提交
6024
{
C
Christoph Hellwig 已提交
6025 6026
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, scan_check.work);
Z
Zhu Yi 已提交
6027 6028 6029 6030 6031 6032 6033 6034 6035 6036

	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));
6037

Z
Zhu Yi 已提交
6038
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
C
Christoph Hellwig 已提交
6039
			iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6040 6041 6042 6043
	}
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6044
static void iwl3945_bg_request_scan(struct work_struct *data)
Z
Zhu Yi 已提交
6045
{
C
Christoph Hellwig 已提交
6046 6047 6048
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, request_scan);
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
6049
		.id = REPLY_SCAN_CMD,
C
Christoph Hellwig 已提交
6050
		.len = sizeof(struct iwl3945_scan_cmd),
Z
Zhu Yi 已提交
6051 6052 6053
		.meta.flags = CMD_SIZE_HUGE,
	};
	int rc = 0;
C
Christoph Hellwig 已提交
6054
	struct iwl3945_scan_cmd *scan;
Z
Zhu Yi 已提交
6055
	struct ieee80211_conf *conf = NULL;
6056
	u8 n_probes = 2;
6057
	enum ieee80211_band band;
6058
	DECLARE_SSID_BUF(ssid);
Z
Zhu Yi 已提交
6059 6060 6061 6062 6063

	conf = ieee80211_get_hw_conf(priv->hw);

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
6064
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6065 6066 6067 6068
		IWL_WARNING("request scan called when driver not ready.\n");
		goto done;
	}

T
Tomas Winkler 已提交
6069
	/* Make sure the scan wasn't canceled before this queued work
Z
Zhu Yi 已提交
6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092
	 * 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
6093
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108
		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
6109
		priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Z
Zhu Yi 已提交
6110 6111 6112 6113 6114 6115 6116
				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
		if (!priv->scan) {
			rc = -ENOMEM;
			goto done;
		}
	}
	scan = priv->scan;
C
Christoph Hellwig 已提交
6117
	memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Z
Zhu Yi 已提交
6118 6119 6120 6121

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

C
Christoph Hellwig 已提交
6122
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135
		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;
6136
		scan->max_out_time = cpu_to_le32(200 * 1024);
Z
Zhu Yi 已提交
6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158
		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",
6159 6160
		     print_ssid(ssid, priv->direct_ssid,
				priv->direct_ssid_len));
Z
Zhu Yi 已提交
6161 6162 6163 6164
		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);
6165 6166
		n_probes++;
	} else
6167
		IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
Z
Zhu Yi 已提交
6168 6169 6170 6171

	/* 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
6172
		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
J
Johannes Berg 已提交
6173
			IWL_MAX_SCAN_SIZE - sizeof(*scan)));
Z
Zhu Yi 已提交
6174 6175 6176 6177 6178 6179
	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 */

6180
	if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
Z
Zhu Yi 已提交
6181 6182 6183
		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;
6184
		band = IEEE80211_BAND_2GHZ;
6185
	} else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
Z
Zhu Yi 已提交
6186 6187
		scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
		scan->good_CRC_th = IWL_GOOD_CRC_TH;
6188
		band = IEEE80211_BAND_5GHZ;
6189
	} else {
Z
Zhu Yi 已提交
6190 6191 6192 6193 6194 6195 6196
		IWL_WARNING("Invalid scan band count\n");
		goto done;
	}

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

6197
	if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
Z
Zhu Yi 已提交
6198 6199
		scan->filter_flags = RXON_FILTER_PROMISC_MSK;

6200 6201 6202 6203
	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
6204

6205 6206 6207 6208 6209
	if (scan->channel_count == 0) {
		IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
		goto done;
	}

Z
Zhu Yi 已提交
6210
	cmd.len += le16_to_cpu(scan->tx_cmd.len) +
C
Christoph Hellwig 已提交
6211
	    scan->channel_count * sizeof(struct iwl3945_scan_channel);
Z
Zhu Yi 已提交
6212 6213 6214 6215
	cmd.data = scan;
	scan->len = cpu_to_le16(cmd.len);

	set_bit(STATUS_SCAN_HW, &priv->status);
C
Christoph Hellwig 已提交
6216
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
6217 6218 6219 6220 6221 6222 6223 6224 6225 6226
	if (rc)
		goto done;

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

	mutex_unlock(&priv->mutex);
	return;

 done:
6227 6228 6229 6230 6231 6232 6233 6234
	/* 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);

6235
	/* inform mac80211 scan aborted */
Z
Zhu Yi 已提交
6236 6237 6238 6239
	queue_work(priv->workqueue, &priv->scan_completed);
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6240
static void iwl3945_bg_up(struct work_struct *data)
Z
Zhu Yi 已提交
6241
{
C
Christoph Hellwig 已提交
6242
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
Z
Zhu Yi 已提交
6243 6244 6245 6246 6247

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6248
	__iwl3945_up(priv);
Z
Zhu Yi 已提交
6249
	mutex_unlock(&priv->mutex);
6250
	iwl3945_rfkill_set_hw_state(priv);
Z
Zhu Yi 已提交
6251 6252
}

C
Christoph Hellwig 已提交
6253
static void iwl3945_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
6254
{
C
Christoph Hellwig 已提交
6255
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
Z
Zhu Yi 已提交
6256 6257 6258 6259

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

C
Christoph Hellwig 已提交
6260
	iwl3945_down(priv);
Z
Zhu Yi 已提交
6261 6262 6263
	queue_work(priv->workqueue, &priv->up);
}

C
Christoph Hellwig 已提交
6264
static void iwl3945_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
6265
{
C
Christoph Hellwig 已提交
6266 6267
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, rx_replenish);
Z
Zhu Yi 已提交
6268 6269 6270 6271 6272

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6273
	iwl3945_rx_replenish(priv);
Z
Zhu Yi 已提交
6274 6275 6276
	mutex_unlock(&priv->mutex);
}

6277 6278
#define IWL_DELAY_NEXT_SCAN (HZ*2)

6279
static void iwl3945_post_associate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6280 6281 6282 6283
{
	int rc = 0;
	struct ieee80211_conf *conf = NULL;

6284
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
6285
		IWL_ERROR("%s Should not be called in AP mode\n", __func__);
Z
Zhu Yi 已提交
6286 6287 6288 6289
		return;
	}


J
Johannes Berg 已提交
6290 6291
	IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
			priv->assoc_id, priv->active_rxon.bssid_addr);
Z
Zhu Yi 已提交
6292 6293 6294 6295

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

A
Abhijeet Kolekar 已提交
6296
	if (!priv->vif || !priv->is_open)
6297
		return;
A
Abhijeet Kolekar 已提交
6298

C
Christoph Hellwig 已提交
6299
	iwl3945_scan_cancel_timeout(priv, 200);
6300

Z
Zhu Yi 已提交
6301 6302 6303
	conf = ieee80211_get_hw_conf(priv->hw);

	priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6304
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6305

C
Christoph Hellwig 已提交
6306 6307 6308
	memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
	iwl3945_setup_rxon_timing(priv);
	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331
			      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;

6332
		if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
6333 6334 6335 6336
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

	}

C
Christoph Hellwig 已提交
6337
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6338 6339

	switch (priv->iw_mode) {
6340
	case NL80211_IFTYPE_STATION:
C
Christoph Hellwig 已提交
6341
		iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Z
Zhu Yi 已提交
6342 6343
		break;

6344
	case NL80211_IFTYPE_ADHOC:
Z
Zhu Yi 已提交
6345

6346
		priv->assoc_id = 1;
C
Christoph Hellwig 已提交
6347
		iwl3945_add_station(priv, priv->bssid, 0, 0);
Z
Zhu Yi 已提交
6348
		iwl3945_sync_sta(priv, IWL_STA_ID,
6349
				 (priv->band == IEEE80211_BAND_5GHZ) ?
Z
Zhu Yi 已提交
6350 6351
				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
				 CMD_ASYNC);
C
Christoph Hellwig 已提交
6352 6353
		iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
		iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6354 6355 6356 6357 6358

		break;

	default:
		 IWL_ERROR("%s Should not be called in %d mode\n",
6359
			   __func__, priv->iw_mode);
Z
Zhu Yi 已提交
6360 6361 6362
		break;
	}

C
Christoph Hellwig 已提交
6363
	iwl3945_activate_qos(priv, 0);
6364

6365 6366
	/* we have just associated, don't start scan too early */
	priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6367 6368
}

C
Christoph Hellwig 已提交
6369
static void iwl3945_bg_abort_scan(struct work_struct *work)
Z
Zhu Yi 已提交
6370
{
C
Christoph Hellwig 已提交
6371
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
Z
Zhu Yi 已提交
6372

C
Christoph Hellwig 已提交
6373
	if (!iwl3945_is_ready(priv))
Z
Zhu Yi 已提交
6374 6375 6376 6377 6378
		return;

	mutex_lock(&priv->mutex);

	set_bit(STATUS_SCAN_ABORTING, &priv->status);
C
Christoph Hellwig 已提交
6379
	iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6380 6381 6382 6383

	mutex_unlock(&priv->mutex);
}

6384
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
6385

C
Christoph Hellwig 已提交
6386
static void iwl3945_bg_scan_completed(struct work_struct *work)
Z
Zhu Yi 已提交
6387
{
C
Christoph Hellwig 已提交
6388 6389
	struct iwl3945_priv *priv =
	    container_of(work, struct iwl3945_priv, scan_completed);
Z
Zhu Yi 已提交
6390 6391 6392 6393 6394 6395

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

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

6396
	if (test_bit(STATUS_CONF_PENDING, &priv->status))
6397
		iwl3945_mac_config(priv->hw, 0);
6398

Z
Zhu Yi 已提交
6399 6400 6401 6402 6403
	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
6404
	iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
6405 6406 6407 6408 6409 6410 6411 6412 6413
	mutex_unlock(&priv->mutex);
}

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

6414 6415
#define UCODE_READY_TIMEOUT	(2 * HZ)

C
Christoph Hellwig 已提交
6416
static int iwl3945_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6417
{
C
Christoph Hellwig 已提交
6418
	struct iwl3945_priv *priv = hw->priv;
6419
	int ret;
Z
Zhu Yi 已提交
6420 6421 6422

	IWL_DEBUG_MAC80211("enter\n");

6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436
	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
6437 6438 6439
	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);

6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451
	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
6452

6453
	ret = __iwl3945_up(priv);
Z
Zhu Yi 已提交
6454 6455

	mutex_unlock(&priv->mutex);
6456

6457 6458
	iwl3945_rfkill_set_hw_state(priv);

6459 6460 6461 6462 6463 6464 6465 6466
	if (ret)
		goto out_release_irq;

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

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

6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480
	/* 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;
		}
	}

6481
	priv->is_open = 1;
Z
Zhu Yi 已提交
6482 6483
	IWL_DEBUG_MAC80211("leave\n");
	return 0;
6484 6485 6486 6487 6488

out_release_irq:
	free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
	pci_disable_msi(priv->pci_dev);
6489 6490 6491
	pci_disable_device(priv->pci_dev);
	priv->is_open = 0;
	IWL_DEBUG_MAC80211("leave - failed\n");
6492
	return ret;
Z
Zhu Yi 已提交
6493 6494
}

C
Christoph Hellwig 已提交
6495
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6496
{
C
Christoph Hellwig 已提交
6497
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6498 6499

	IWL_DEBUG_MAC80211("enter\n");
6500

6501 6502 6503 6504 6505
	if (!priv->is_open) {
		IWL_DEBUG_MAC80211("leave - skip\n");
		return;
	}

Z
Zhu Yi 已提交
6506
	priv->is_open = 0;
6507 6508

	if (iwl3945_is_ready_rf(priv)) {
6509 6510 6511
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
6512 6513
		mutex_lock(&priv->mutex);
		iwl3945_scan_cancel_timeout(priv, 100);
6514 6515 6516
		mutex_unlock(&priv->mutex);
	}

6517 6518 6519 6520 6521 6522 6523
	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);
6524

Z
Zhu Yi 已提交
6525 6526 6527
	IWL_DEBUG_MAC80211("leave\n");
}

6528
static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
6529
{
C
Christoph Hellwig 已提交
6530
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6531 6532 6533 6534

	IWL_DEBUG_MAC80211("enter\n");

	IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6535
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
6536

6537
	if (iwl3945_tx_skb(priv, skb))
Z
Zhu Yi 已提交
6538 6539 6540 6541 6542 6543
		dev_kfree_skb_any(skb);

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

C
Christoph Hellwig 已提交
6544
static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6545 6546
				 struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6547
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6548 6549
	unsigned long flags;

6550
	IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Z
Zhu Yi 已提交
6551

6552 6553
	if (priv->vif) {
		IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6554
		return -EOPNOTSUPP;
Z
Zhu Yi 已提交
6555 6556 6557
	}

	spin_lock_irqsave(&priv->lock, flags);
6558
	priv->vif = conf->vif;
6559
	priv->iw_mode = conf->type;
Z
Zhu Yi 已提交
6560 6561 6562 6563

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6564 6565

	if (conf->mac_addr) {
J
Johannes Berg 已提交
6566
		IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
6567 6568 6569
		memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
	}

6570 6571
	if (iwl3945_is_ready(priv))
		iwl3945_set_mode(priv, conf->type);
Z
Zhu Yi 已提交
6572 6573 6574

	mutex_unlock(&priv->mutex);

6575
	IWL_DEBUG_MAC80211("leave\n");
Z
Zhu Yi 已提交
6576 6577 6578 6579
	return 0;
}

/**
C
Christoph Hellwig 已提交
6580
 * iwl3945_mac_config - mac80211 config callback
Z
Zhu Yi 已提交
6581 6582 6583 6584 6585
 *
 * 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.
 */
6586
static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
Z
Zhu Yi 已提交
6587
{
C
Christoph Hellwig 已提交
6588 6589
	struct iwl3945_priv *priv = hw->priv;
	const struct iwl3945_channel_info *ch_info;
6590
	struct ieee80211_conf *conf = &hw->conf;
Z
Zhu Yi 已提交
6591
	unsigned long flags;
6592
	int ret = 0;
Z
Zhu Yi 已提交
6593 6594

	mutex_lock(&priv->mutex);
6595
	IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Z
Zhu Yi 已提交
6596

C
Christoph Hellwig 已提交
6597
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6598
		IWL_DEBUG_MAC80211("leave - not ready\n");
6599 6600
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6601 6602
	}

C
Christoph Hellwig 已提交
6603
	if (unlikely(!iwl3945_param_disable_hw_scan &&
Z
Zhu Yi 已提交
6604
		     test_bit(STATUS_SCANNING, &priv->status))) {
6605 6606
		IWL_DEBUG_MAC80211("leave - scanning\n");
		set_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6607
		mutex_unlock(&priv->mutex);
6608
		return 0;
Z
Zhu Yi 已提交
6609 6610 6611 6612
	}

	spin_lock_irqsave(&priv->lock, flags);

6613 6614
	ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
					   conf->channel->hw_value);
Z
Zhu Yi 已提交
6615
	if (!is_channel_valid(ch_info)) {
6616
		IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6617
			       conf->channel->hw_value, conf->channel->band);
Z
Zhu Yi 已提交
6618 6619
		IWL_DEBUG_MAC80211("leave - invalid channel\n");
		spin_unlock_irqrestore(&priv->lock, flags);
6620 6621
		ret = -EINVAL;
		goto out;
Z
Zhu Yi 已提交
6622 6623
	}

6624
	iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Z
Zhu Yi 已提交
6625

6626
	iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Z
Zhu Yi 已提交
6627 6628 6629 6630

	/* 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
6631
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6632 6633 6634 6635 6636

	spin_unlock_irqrestore(&priv->lock, flags);

#ifdef IEEE80211_CONF_CHANNEL_SWITCH
	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
C
Christoph Hellwig 已提交
6637
		iwl3945_hw_channel_switch(priv, conf->channel);
6638
		goto out;
Z
Zhu Yi 已提交
6639 6640 6641
	}
#endif

C
Christoph Hellwig 已提交
6642
	iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Z
Zhu Yi 已提交
6643 6644 6645

	if (!conf->radio_enabled) {
		IWL_DEBUG_MAC80211("leave - radio disabled\n");
6646
		goto out;
Z
Zhu Yi 已提交
6647 6648
	}

C
Christoph Hellwig 已提交
6649
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6650
		IWL_DEBUG_MAC80211("leave - RF kill\n");
6651 6652
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6653 6654
	}

C
Christoph Hellwig 已提交
6655
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6656 6657 6658

	if (memcmp(&priv->active_rxon,
		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
C
Christoph Hellwig 已提交
6659
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6660 6661 6662 6663 6664
	else
		IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");

	IWL_DEBUG_MAC80211("leave\n");

6665
out:
6666
	clear_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6667
	mutex_unlock(&priv->mutex);
6668
	return ret;
Z
Zhu Yi 已提交
6669 6670
}

C
Christoph Hellwig 已提交
6671
static void iwl3945_config_ap(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6672 6673 6674
{
	int rc = 0;

6675
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
6676 6677 6678
		return;

	/* The following should be done only at AP bring up */
6679
	if (!(iwl3945_is_associated(priv))) {
Z
Zhu Yi 已提交
6680 6681 6682

		/* RXON - unassoc (to set timing command) */
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6683
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6684 6685

		/* RXON Timing */
C
Christoph Hellwig 已提交
6686 6687 6688
		memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
		iwl3945_setup_rxon_timing(priv);
		rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Z
Zhu Yi 已提交
6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711
				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;

6712
			if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Z
Zhu Yi 已提交
6713 6714 6715 6716 6717
				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
6718 6719
		iwl3945_commit_rxon(priv);
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6720
	}
C
Christoph Hellwig 已提交
6721
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6722 6723 6724 6725 6726 6727

	/* 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... */
}

6728 6729
static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
Z
Zhu Yi 已提交
6730 6731
				    struct ieee80211_if_conf *conf)
{
C
Christoph Hellwig 已提交
6732
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6733 6734 6735 6736 6737
	int rc;

	if (conf == NULL)
		return -EIO;

6738 6739 6740 6741 6742
	if (priv->vif != vif) {
		IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
		return 0;
	}

6743
	/* handle this temporarily here */
6744
	if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
6745 6746 6747 6748
	    conf->changed & IEEE80211_IFCC_BEACON) {
		struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
		if (!beacon)
			return -ENOMEM;
6749
		mutex_lock(&priv->mutex);
6750
		rc = iwl3945_mac_beacon_update(hw, beacon);
6751
		mutex_unlock(&priv->mutex);
6752 6753 6754 6755
		if (rc)
			return rc;
	}

6756 6757 6758
	if (!iwl3945_is_alive(priv))
		return -EAGAIN;

Z
Zhu Yi 已提交
6759 6760 6761
	mutex_lock(&priv->mutex);

	if (conf->bssid)
J
Johannes Berg 已提交
6762
		IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
Z
Zhu Yi 已提交
6763

6764 6765 6766
/*
 * very dubious code was here; the probe filtering flag is never set:
 *
Z
Zhu Yi 已提交
6767 6768
	if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
	    !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6769
 */
Z
Zhu Yi 已提交
6770

6771
	if (priv->iw_mode == NL80211_IFTYPE_AP) {
Z
Zhu Yi 已提交
6772 6773 6774
		if (!conf->bssid) {
			conf->bssid = priv->mac_addr;
			memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
J
Johannes Berg 已提交
6775 6776
			IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
					   conf->bssid);
Z
Zhu Yi 已提交
6777 6778 6779 6780
		}
		if (priv->ibss_beacon)
			dev_kfree_skb(priv->ibss_beacon);

6781
		priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
Z
Zhu Yi 已提交
6782 6783
	}

6784 6785 6786
	if (iwl3945_is_rfkill(priv))
		goto done;

Z
Zhu Yi 已提交
6787 6788 6789 6790
	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
6791
		if (iwl3945_scan_cancel_timeout(priv, 100)) {
Z
Zhu Yi 已提交
6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805
			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);

6806
		if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
6807
			iwl3945_config_ap(priv);
Z
Zhu Yi 已提交
6808
		else {
C
Christoph Hellwig 已提交
6809
			rc = iwl3945_commit_rxon(priv);
6810
			if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
C
Christoph Hellwig 已提交
6811
				iwl3945_add_station(priv,
6812
					priv->active_rxon.bssid_addr, 1, 0);
Z
Zhu Yi 已提交
6813 6814 6815
		}

	} else {
C
Christoph Hellwig 已提交
6816
		iwl3945_scan_cancel_timeout(priv, 100);
Z
Zhu Yi 已提交
6817
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6818
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6819 6820
	}

6821
 done:
Z
Zhu Yi 已提交
6822 6823 6824 6825 6826 6827
	IWL_DEBUG_MAC80211("leave\n");
	mutex_unlock(&priv->mutex);

	return 0;
}

C
Christoph Hellwig 已提交
6828
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6829 6830 6831 6832
				 unsigned int changed_flags,
				 unsigned int *total_flags,
				 int mc_count, struct dev_addr_list *mc_list)
{
6833
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu, Yi 已提交
6834
	__le32 *filter_flags = &priv->staging_rxon.filter_flags;
6835

Z
Zhu, Yi 已提交
6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855
	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;
6856
	}
Z
Zhu, Yi 已提交
6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870
	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 |
6871
			FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6872 6873
}

C
Christoph Hellwig 已提交
6874
static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6875 6876
				     struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6877
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6878 6879 6880 6881

	IWL_DEBUG_MAC80211("enter\n");

	mutex_lock(&priv->mutex);
6882

6883 6884 6885 6886 6887
	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);
	}
6888 6889
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
Z
Zhu Yi 已提交
6890 6891 6892 6893 6894 6895 6896
		memset(priv->bssid, 0, ETH_ALEN);
	}
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
}

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 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953
#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;
			priv->timestamp0 = bss_conf->timestamp & 0xFFFFFFFF;
			priv->timestamp1 = (bss_conf->timestamp >> 32) &
					     0xFFFFFFFF;
			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
6954
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Z
Zhu Yi 已提交
6955 6956 6957
{
	int rc = 0;
	unsigned long flags;
C
Christoph Hellwig 已提交
6958
	struct iwl3945_priv *priv = hw->priv;
6959
	DECLARE_SSID_BUF(ssid_buf);
Z
Zhu Yi 已提交
6960 6961 6962

	IWL_DEBUG_MAC80211("enter\n");

6963
	mutex_lock(&priv->mutex);
Z
Zhu Yi 已提交
6964 6965
	spin_lock_irqsave(&priv->lock, flags);

C
Christoph Hellwig 已提交
6966
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
6967 6968 6969 6970 6971
		rc = -EIO;
		IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
		goto out_unlock;
	}

6972 6973 6974 6975 6976 6977
	/* 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;
	}
6978 6979 6980 6981
	/* 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
6982 6983 6984 6985
		rc = -EAGAIN;
		goto out_unlock;
	}
	if (len) {
6986
		IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6987
			       print_ssid(ssid_buf, ssid, len), (int)len);
Z
Zhu Yi 已提交
6988 6989 6990 6991 6992

		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);
6993 6994
	} else
		priv->one_direct_scan = 0;
Z
Zhu Yi 已提交
6995

C
Christoph Hellwig 已提交
6996
	rc = iwl3945_scan_initiate(priv);
Z
Zhu Yi 已提交
6997 6998 6999 7000 7001

	IWL_DEBUG_MAC80211("leave\n");

out_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
7002
	mutex_unlock(&priv->mutex);
Z
Zhu Yi 已提交
7003 7004 7005 7006

	return rc;
}

C
Christoph Hellwig 已提交
7007
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Z
Zhu Yi 已提交
7008 7009 7010
			   const u8 *local_addr, const u8 *addr,
			   struct ieee80211_key_conf *key)
{
C
Christoph Hellwig 已提交
7011
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7012 7013 7014 7015 7016
	int rc = 0;
	u8 sta_id;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7017
	if (!iwl3945_param_hwcrypto) {
Z
Zhu Yi 已提交
7018 7019 7020 7021 7022 7023 7024 7025
		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
7026
	sta_id = iwl3945_hw_find_station(priv, addr);
Z
Zhu Yi 已提交
7027
	if (sta_id == IWL_INVALID_STATION) {
J
Johannes Berg 已提交
7028 7029
		IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
				   addr);
Z
Zhu Yi 已提交
7030 7031 7032 7033 7034
		return -EINVAL;
	}

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
7035
	iwl3945_scan_cancel_timeout(priv, 100);
7036

Z
Zhu Yi 已提交
7037 7038
	switch (cmd) {
	case  SET_KEY:
C
Christoph Hellwig 已提交
7039
		rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Z
Zhu Yi 已提交
7040
		if (!rc) {
C
Christoph Hellwig 已提交
7041 7042
			iwl3945_set_rxon_hwcrypto(priv, 1);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7043 7044 7045 7046 7047 7048
			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
7049
		rc = iwl3945_clear_sta_key_info(priv, sta_id);
Z
Zhu Yi 已提交
7050
		if (!rc) {
C
Christoph Hellwig 已提交
7051 7052
			iwl3945_set_rxon_hwcrypto(priv, 0);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065
			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
7066
static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
Z
Zhu Yi 已提交
7067 7068
			   const struct ieee80211_tx_queue_params *params)
{
C
Christoph Hellwig 已提交
7069
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7070 7071 7072 7073 7074
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7075
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092
		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 =
7093
			cpu_to_le16((params->txop * 32));
Z
Zhu Yi 已提交
7094 7095 7096 7097 7098 7099 7100

	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);
7101
	if (priv->iw_mode == NL80211_IFTYPE_AP)
C
Christoph Hellwig 已提交
7102 7103 7104
		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
7105 7106 7107 7108 7109 7110 7111

	mutex_unlock(&priv->mutex);

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

C
Christoph Hellwig 已提交
7112
static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7113 7114
				struct ieee80211_tx_queue_stats *stats)
{
C
Christoph Hellwig 已提交
7115
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7116
	int i, avail;
C
Christoph Hellwig 已提交
7117 7118
	struct iwl3945_tx_queue *txq;
	struct iwl3945_queue *q;
Z
Zhu Yi 已提交
7119 7120 7121 7122
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7123
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7124 7125 7126 7127 7128 7129 7130 7131 7132
		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
7133
		avail = iwl3945_queue_space(q);
Z
Zhu Yi 已提交
7134

7135 7136 7137
		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
7138 7139 7140 7141 7142 7143 7144 7145 7146

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

	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7147
static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7148 7149 7150 7151 7152 7153 7154 7155
			     struct ieee80211_low_level_stats *stats)
{
	IWL_DEBUG_MAC80211("enter\n");
	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7156
static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7157
{
C
Christoph Hellwig 已提交
7158
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7159 7160 7161 7162 7163
	unsigned long flags;

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

C
Christoph Hellwig 已提交
7164
	iwl3945_reset_qos(priv);
7165

Z
Zhu Yi 已提交
7166 7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179
	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;
	priv->timestamp1 = 0;
	priv->timestamp0 = 0;
7180
	if ((priv->iw_mode == NL80211_IFTYPE_STATION))
Z
Zhu Yi 已提交
7181 7182 7183 7184
		priv->beacon_int = 0;

	spin_unlock_irqrestore(&priv->lock, flags);

7185 7186 7187 7188 7189 7190
	if (!iwl3945_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211("leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

7191 7192 7193
	/* we are restarting association process
	 * clear RXON_FILTER_ASSOC_MSK bit
	*/
7194
	if (priv->iw_mode != NL80211_IFTYPE_AP) {
C
Christoph Hellwig 已提交
7195
		iwl3945_scan_cancel_timeout(priv, 100);
7196
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
7197
		iwl3945_commit_rxon(priv);
7198 7199
	}

Z
Zhu Yi 已提交
7200
	/* Per mac80211.h: This is only used in IBSS mode... */
7201
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
7202

Z
Zhu Yi 已提交
7203 7204 7205 7206 7207
		IWL_DEBUG_MAC80211("leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

C
Christoph Hellwig 已提交
7208
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
7209 7210 7211 7212 7213 7214 7215

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");

}

7216
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
7217
{
C
Christoph Hellwig 已提交
7218
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7219 7220 7221 7222
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7223
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7224 7225 7226 7227
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		return -EIO;
	}

7228
	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
Z
Zhu Yi 已提交
7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244
		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
7245
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7246

7247
	iwl3945_post_associate(priv);
Z
Zhu Yi 已提交
7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258


	return 0;
}

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

7259
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270

/*
 * 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.
 */

static ssize_t show_debug_level(struct device_driver *d, char *buf)
{
C
Christoph Hellwig 已提交
7271
	return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
Z
Zhu Yi 已提交
7272 7273 7274 7275 7276 7277 7278 7279 7280 7281 7282 7283
}
static ssize_t store_debug_level(struct device_driver *d,
				 const char *buf, size_t count)
{
	char *p = (char *)buf;
	u32 val;

	val = simple_strtoul(p, &p, 0);
	if (p == buf)
		printk(KERN_INFO DRV_NAME
		       ": %s is not in hex or decimal form.\n", buf);
	else
C
Christoph Hellwig 已提交
7284
		iwl3945_debug_level = val;
Z
Zhu Yi 已提交
7285 7286 7287 7288 7289 7290 7291

	return strnlen(buf, count);
}

static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
		   show_debug_level, store_debug_level);

7292
#endif /* CONFIG_IWL3945_DEBUG */
Z
Zhu Yi 已提交
7293 7294 7295 7296

static ssize_t show_temperature(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7297
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7298

C
Christoph Hellwig 已提交
7299
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7300 7301
		return -EAGAIN;

C
Christoph Hellwig 已提交
7302
	return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Z
Zhu Yi 已提交
7303 7304 7305 7306 7307 7308 7309
}

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
7310
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7311 7312 7313 7314 7315 7316 7317
	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
7318
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7319 7320 7321 7322 7323 7324 7325 7326
	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
7327
		iwl3945_hw_reg_set_txpower(priv, val);
Z
Zhu Yi 已提交
7328 7329 7330 7331 7332 7333 7334 7335 7336

	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
7337
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7338 7339 7340 7341 7342 7343 7344 7345

	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
7346
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7347 7348 7349 7350 7351
	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
7352
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7353 7354 7355 7356 7357
			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
7358
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370
		}
	}
	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
7371
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7372 7373 7374 7375 7376 7377 7378 7379 7380

	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
7381
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7382 7383 7384 7385 7386
	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
7387
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7388 7389 7390 7391 7392 7393
			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
7394
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7395 7396 7397 7398 7399 7400 7401 7402 7403 7404
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

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

7405
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7406 7407 7408 7409

static ssize_t show_measurement(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7410 7411
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	struct iwl3945_spectrum_notification measure_report;
Z
Zhu Yi 已提交
7412
	u32 size = sizeof(measure_report), len = 0, ofs = 0;
7413
	u8 *data = (u8 *)&measure_report;
Z
Zhu Yi 已提交
7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442
	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
7443
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465 7466 7467 7468
	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
7469
	iwl3945_get_measurement(priv, &params, type);
Z
Zhu Yi 已提交
7470 7471 7472 7473 7474 7475

	return count;
}

static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
		   show_measurement, store_measurement);
7476
#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Z
Zhu Yi 已提交
7477 7478 7479 7480 7481

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
7482
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7483 7484 7485 7486 7487 7488 7489 7490 7491 7492 7493

	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
7494
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7495 7496 7497 7498 7499 7500 7501 7502 7503 7504
	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
7505
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7506 7507 7508 7509 7510 7511
	int rc;
	int mode;

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

C
Christoph Hellwig 已提交
7512
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
7513 7514 7515 7516 7517 7518 7519 7520 7521 7522
		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
7523
		rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Z
Zhu Yi 已提交
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 7553 7554 7555 7556 7557 7558
		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
7559
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583
	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");

7584
	return p - buf + 1;
Z
Zhu Yi 已提交
7585 7586 7587 7588 7589 7590 7591 7592 7593

}

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)
{
7594 7595
	/* all this shit doesn't belong into sysfs anyway */
	return 0;
Z
Zhu Yi 已提交
7596 7597 7598 7599 7600 7601 7602
}

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
7603 7604
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	u32 size = sizeof(struct iwl3945_notif_statistics);
Z
Zhu Yi 已提交
7605
	u32 len = 0, ofs = 0;
7606
	u8 *data = (u8 *)&priv->statistics;
Z
Zhu Yi 已提交
7607 7608
	int rc = 0;

C
Christoph Hellwig 已提交
7609
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7610 7611 7612
		return -EAGAIN;

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7613
	rc = iwl3945_send_statistics_request(priv);
Z
Zhu Yi 已提交
7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634 7635 7636 7637 7638 7639 7640
	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
7641
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7642

C
Christoph Hellwig 已提交
7643
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7644 7645 7646 7647 7648 7649 7650 7651 7652 7653
		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
7654
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665

	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
7666
		priv->antenna = (enum iwl3945_antenna)ant;
Z
Zhu Yi 已提交
7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678
	} 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
7679 7680
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693
		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
7694
		iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707

	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
7708
		iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7709 7710 7711 7712 7713 7714 7715 7716

	return strnlen(buf, count);
}

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

/*****************************************************************************
 *
T
Tomas Winkler 已提交
7717
 * driver setup and tear down
Z
Zhu Yi 已提交
7718 7719 7720
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
7721
static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7722 7723 7724 7725 7726
{
	priv->workqueue = create_workqueue(DRV_NAME);

	init_waitqueue_head(&priv->wait_command_queue);

C
Christoph Hellwig 已提交
7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739
	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
7740 7741

	tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
C
Christoph Hellwig 已提交
7742
		     iwl3945_irq_tasklet, (unsigned long)priv);
Z
Zhu Yi 已提交
7743 7744
}

C
Christoph Hellwig 已提交
7745
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7746
{
C
Christoph Hellwig 已提交
7747
	iwl3945_hw_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
7748

7749
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
7750 7751 7752 7753 7754
	cancel_delayed_work(&priv->scan_check);
	cancel_delayed_work(&priv->alive_start);
	cancel_work_sync(&priv->beacon_update);
}

C
Christoph Hellwig 已提交
7755
static struct attribute *iwl3945_sysfs_entries[] = {
Z
Zhu Yi 已提交
7756 7757 7758 7759 7760 7761
	&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,
7762
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7763 7764 7765 7766 7767 7768 7769 7770 7771 7772 7773 7774
	&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,

	NULL
};

C
Christoph Hellwig 已提交
7775
static struct attribute_group iwl3945_attribute_group = {
Z
Zhu Yi 已提交
7776
	.name = NULL,		/* put in device directory */
C
Christoph Hellwig 已提交
7777
	.attrs = iwl3945_sysfs_entries,
Z
Zhu Yi 已提交
7778 7779
};

C
Christoph Hellwig 已提交
7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793
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,
7794
	.bss_info_changed = iwl3945_bss_info_changed,
C
Christoph Hellwig 已提交
7795
	.hw_scan = iwl3945_mac_hw_scan
Z
Zhu Yi 已提交
7796 7797
};

C
Christoph Hellwig 已提交
7798
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
7799 7800
{
	int err = 0;
C
Christoph Hellwig 已提交
7801
	struct iwl3945_priv *priv;
Z
Zhu Yi 已提交
7802
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
7803
	struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
7804
	unsigned long flags;
Z
Zhu Yi 已提交
7805

7806 7807 7808 7809
	/***********************
	 * 1. Allocating HW data
	 * ********************/

7810 7811
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
C
Christoph Hellwig 已提交
7812
	if (iwl3945_param_disable_hw_scan) {
Z
Zhu Yi 已提交
7813
		IWL_DEBUG_INFO("Disabling hw_scan\n");
C
Christoph Hellwig 已提交
7814
		iwl3945_hw_ops.hw_scan = NULL;
Z
Zhu Yi 已提交
7815 7816
	}

7817
	if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
C
Christoph Hellwig 已提交
7818
	    (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
Z
Zhu Yi 已提交
7819
		IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7820
			  IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
Z
Zhu Yi 已提交
7821 7822 7823 7824 7825 7826
		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
7827
	hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
Z
Zhu Yi 已提交
7828 7829 7830 7831 7832 7833
	if (hw == NULL) {
		IWL_ERROR("Can not allocate network device\n");
		err = -ENOMEM;
		goto out;
	}

7834
	SET_IEEE80211_DEV(hw, &pdev->dev);
7835

Z
Zhu Yi 已提交
7836 7837 7838
	priv = hw->priv;
	priv->hw = hw;
	priv->pci_dev = pdev;
T
Tomas Winkler 已提交
7839
	priv->cfg = cfg;
7840

7841 7842 7843 7844
	IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
	hw->rate_control_algorithm = "iwl-3945-rs";
	hw->sta_data_size = sizeof(struct iwl3945_sta_priv);

7845
	/* Select antenna (may be helpful if only one antenna is connected) */
C
Christoph Hellwig 已提交
7846
	priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7847
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
7848
	iwl3945_debug_level = iwl3945_param_debug;
Z
Zhu Yi 已提交
7849 7850 7851
	atomic_set(&priv->restrict_refcnt, 0);
#endif

7852
	/* Tell mac80211 our characteristics */
7853
	hw->flags = IEEE80211_HW_SIGNAL_DBM |
7854
		    IEEE80211_HW_NOISE_DBM;
Z
Zhu Yi 已提交
7855

7856 7857 7858 7859
	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC);

7860 7861
	hw->wiphy->fw_handles_regulatory = true;

7862
	/* 4 EDCA QOS priorities */
Z
Zhu Yi 已提交
7863 7864
	hw->queues = 4;

7865 7866 7867
	/***************************
	 * 2. Initializing PCI bus
	 * *************************/
Z
Zhu Yi 已提交
7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886
	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;
7887

7888 7889 7890
	/***********************
	 * 3. Read REV Register
	 * ********************/
Z
Zhu Yi 已提交
7891 7892 7893 7894 7895 7896 7897 7898 7899 7900
	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);

7901 7902 7903
	/* 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
7904

7905 7906 7907
	/* 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
7908

7909
	iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
Z
Zhu, Yi 已提交
7910 7911
	err = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL,
				CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
7912 7913 7914 7915
	if (err < 0) {
		IWL_DEBUG_INFO("Failed to init the card\n");
		goto out_remove_sysfs;
	}
Z
Zhu Yi 已提交
7916

7917 7918 7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929
	/***********************
	 * 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
7930

7931 7932 7933
	/***********************
	 * 5. Setup HW Constants
	 * ********************/
Z
Zhu Yi 已提交
7934
	/* Device-specific setup */
C
Christoph Hellwig 已提交
7935
	if (iwl3945_hw_set_hw_setting(priv)) {
Z
Zhu Yi 已提交
7936 7937 7938 7939
		IWL_ERROR("failed to set hw settings\n");
		goto out_iounmap;
	}

7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963
	/***********************
	 * 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
7964
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7965 7966 7967 7968 7969 7970 7971 7972 7973 7974

	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;

7975
	err = iwl3945_init_channel_map(priv);
Z
Zhu Yi 已提交
7976
	if (err) {
7977
		IWL_ERROR("initializing regulatory failed: %d\n", err);
Z
Zhu Yi 已提交
7978 7979 7980
		goto out_release_irq;
	}

7981
	err = iwl3945_init_geos(priv);
Z
Zhu Yi 已提交
7982
	if (err) {
7983 7984
		IWL_ERROR("initializing geos failed: %d\n", err);
		goto out_free_channel_map;
Z
Zhu Yi 已提交
7985 7986
	}

7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998
	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");
7999 8000
	}

8001 8002 8003 8004 8005 8006 8007 8008 8009 8010

	/***********************
	 * 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);
8011
	if (err) {
8012 8013
		IWL_ERROR("failed to create sysfs device attributes\n");
		goto out_free_geos;
8014 8015
	}

8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029
	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
	 * *******************************/

8030 8031 8032
	err = ieee80211_register_hw(priv->hw);
	if (err) {
		IWL_ERROR("Failed to register network device (error %d)\n", err);
8033
		goto  out_remove_sysfs;
8034
	}
Z
Zhu Yi 已提交
8035

8036 8037
	priv->hw->conf.beacon_int = 100;
	priv->mac80211_registered = 1;
8038

Z
Zhu Yi 已提交
8039

8040 8041 8042 8043 8044
	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
8045 8046
	return 0;

8047 8048
 out_remove_sysfs:
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8049 8050 8051 8052
 out_free_geos:
	iwl3945_free_geos(priv);
 out_free_channel_map:
	iwl3945_free_channel_map(priv);
8053

Z
Zhu Yi 已提交
8054 8055 8056 8057

 out_release_irq:
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
C
Christoph Hellwig 已提交
8058
	iwl3945_unset_hw_setting(priv);
Z
Zhu Yi 已提交
8059 8060 8061 8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072

 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;
}

8073
static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8074
{
C
Christoph Hellwig 已提交
8075
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8076
	unsigned long flags;
Z
Zhu Yi 已提交
8077 8078 8079 8080 8081 8082 8083

	if (!priv)
		return;

	IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");

	set_bit(STATUS_EXIT_PENDING, &priv->status);
8084

C
Christoph Hellwig 已提交
8085
	iwl3945_down(priv);
Z
Zhu Yi 已提交
8086

8087 8088 8089 8090 8091 8092 8093 8094 8095
	/* 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
8096
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8097

8098
	iwl3945_rfkill_unregister(priv);
C
Christoph Hellwig 已提交
8099
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
8100 8101

	if (priv->rxq.bd)
C
Christoph Hellwig 已提交
8102 8103
		iwl3945_rx_queue_free(priv, &priv->rxq);
	iwl3945_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
8104

C
Christoph Hellwig 已提交
8105 8106
	iwl3945_unset_hw_setting(priv);
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8107

8108
	if (priv->mac80211_registered)
Z
Zhu Yi 已提交
8109 8110
		ieee80211_unregister_hw(priv->hw);

8111 8112 8113
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

C
Christoph Hellwig 已提交
8114
	/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Z
Zhu Yi 已提交
8115 8116 8117 8118 8119 8120 8121 8122 8123 8124
	 * 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);

8125 8126
	iwl3945_free_channel_map(priv);
	iwl3945_free_geos(priv);
8127
	kfree(priv->scan);
Z
Zhu Yi 已提交
8128 8129 8130 8131 8132 8133 8134 8135
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	ieee80211_free_hw(priv->hw);
}

#ifdef CONFIG_PM

C
Christoph Hellwig 已提交
8136
static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Z
Zhu Yi 已提交
8137
{
C
Christoph Hellwig 已提交
8138
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8139

8140 8141 8142 8143 8144
	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
8145 8146 8147 8148 8149 8150

	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

C
Christoph Hellwig 已提交
8151
static int iwl3945_pci_resume(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8152
{
C
Christoph Hellwig 已提交
8153
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8154 8155 8156

	pci_set_power_state(pdev, PCI_D0);

8157 8158
	if (priv->is_open)
		iwl3945_mac_start(priv->hw);
Z
Zhu Yi 已提交
8159

8160
	clear_bit(STATUS_IN_SUSPEND, &priv->status);
Z
Zhu Yi 已提交
8161 8162 8163 8164 8165
	return 0;
}

#endif /* CONFIG_PM */

8166
/*************** RFKILL FUNCTIONS **********/
8167
#ifdef CONFIG_IWL3945_RFKILL
8168 8169 8170 8171 8172 8173
/* 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;

8174
	if (!priv->rfkill)
8175 8176 8177 8178 8179
	return 0;

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

T
Tomas Winkler 已提交
8180
	IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
8181 8182 8183
	mutex_lock(&priv->mutex);

	switch (state) {
8184
	case RFKILL_STATE_UNBLOCKED:
8185
		if (iwl3945_is_rfkill_hw(priv)) {
8186
			err = -EBUSY;
8187 8188 8189
			goto out_unlock;
		}
		iwl3945_radio_kill_sw(priv, 0);
8190
		break;
8191
	case RFKILL_STATE_SOFT_BLOCKED:
8192 8193
		iwl3945_radio_kill_sw(priv, 1);
		break;
8194
	default:
T
Tomas Winkler 已提交
8195
		IWL_WARNING("we received unexpected RFKILL state %d\n", state);
8196
		break;
8197
	}
8198
out_unlock:
8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211
	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");
8212 8213
	priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
	if (!priv->rfkill) {
8214 8215 8216 8217 8218
		IWL_ERROR("Unable to allocate rfkill device.\n");
		ret = -ENOMEM;
		goto error;
	}

8219 8220 8221 8222 8223
	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;
8224

8225 8226
	priv->rfkill->dev.class->suspend = NULL;
	priv->rfkill->dev.class->resume = NULL;
8227

8228
	ret = rfkill_register(priv->rfkill);
8229 8230
	if (ret) {
		IWL_ERROR("Unable to register rfkill: %d\n", ret);
8231
		goto freed_rfkill;
8232 8233 8234 8235 8236 8237
	}

	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;

freed_rfkill:
8238 8239 8240
	if (priv->rfkill != NULL)
		rfkill_free(priv->rfkill);
	priv->rfkill = NULL;
8241 8242 8243 8244 8245 8246 8247 8248

error:
	IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
	return ret;
}

void iwl3945_rfkill_unregister(struct iwl3945_priv *priv)
{
8249 8250
	if (priv->rfkill)
		rfkill_unregister(priv->rfkill);
8251

8252
	priv->rfkill = NULL;
8253 8254 8255 8256 8257 8258
}

/* set rf-kill to the right state. */
void iwl3945_rfkill_set_hw_state(struct iwl3945_priv *priv)
{

8259 8260 8261 8262 8263
	if (!priv->rfkill)
		return;

	if (iwl3945_is_rfkill_hw(priv)) {
		rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8264
		return;
8265
	}
8266

8267 8268
	if (!iwl3945_is_rfkill_sw(priv))
		rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
8269
	else
8270
		rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
8271 8272 8273
}
#endif

Z
Zhu Yi 已提交
8274 8275 8276 8277 8278 8279
/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
8280
static struct pci_driver iwl3945_driver = {
Z
Zhu Yi 已提交
8281
	.name = DRV_NAME,
C
Christoph Hellwig 已提交
8282 8283 8284
	.id_table = iwl3945_hw_card_ids,
	.probe = iwl3945_pci_probe,
	.remove = __devexit_p(iwl3945_pci_remove),
Z
Zhu Yi 已提交
8285
#ifdef CONFIG_PM
C
Christoph Hellwig 已提交
8286 8287
	.suspend = iwl3945_pci_suspend,
	.resume = iwl3945_pci_resume,
Z
Zhu Yi 已提交
8288 8289 8290
#endif
};

C
Christoph Hellwig 已提交
8291
static int __init iwl3945_init(void)
Z
Zhu Yi 已提交
8292 8293 8294 8295 8296
{

	int ret;
	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8297 8298 8299 8300 8301 8302 8303

	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
8304
	ret = pci_register_driver(&iwl3945_driver);
Z
Zhu Yi 已提交
8305 8306
	if (ret) {
		IWL_ERROR("Unable to initialize PCI module\n");
8307
		goto error_register;
Z
Zhu Yi 已提交
8308
	}
8309
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8310
	ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
Z
Zhu Yi 已提交
8311 8312
	if (ret) {
		IWL_ERROR("Unable to create driver sysfs file\n");
8313
		goto error_debug;
Z
Zhu Yi 已提交
8314 8315 8316 8317
	}
#endif

	return ret;
8318 8319 8320 8321 8322 8323 8324 8325

#ifdef CONFIG_IWL3945_DEBUG
error_debug:
	pci_unregister_driver(&iwl3945_driver);
#endif
error_register:
	iwl3945_rate_control_unregister();
	return ret;
Z
Zhu Yi 已提交
8326 8327
}

C
Christoph Hellwig 已提交
8328
static void __exit iwl3945_exit(void)
Z
Zhu Yi 已提交
8329
{
8330
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8331
	driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
Z
Zhu Yi 已提交
8332
#endif
C
Christoph Hellwig 已提交
8333
	pci_unregister_driver(&iwl3945_driver);
8334
	iwl3945_rate_control_unregister();
Z
Zhu Yi 已提交
8335 8336
}

8337
MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
8338

C
Christoph Hellwig 已提交
8339
module_param_named(antenna, iwl3945_param_antenna, int, 0444);
Z
Zhu Yi 已提交
8340
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
C
Christoph Hellwig 已提交
8341
module_param_named(disable, iwl3945_param_disable, int, 0444);
Z
Zhu Yi 已提交
8342
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
C
Christoph Hellwig 已提交
8343
module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
Z
Zhu Yi 已提交
8344 8345
MODULE_PARM_DESC(hwcrypto,
		 "using hardware crypto engine (default 0 [software])\n");
C
Christoph Hellwig 已提交
8346
module_param_named(debug, iwl3945_param_debug, int, 0444);
Z
Zhu Yi 已提交
8347
MODULE_PARM_DESC(debug, "debug output mask");
C
Christoph Hellwig 已提交
8348
module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
Z
Zhu Yi 已提交
8349 8350
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");

C
Christoph Hellwig 已提交
8351
module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
Z
Zhu Yi 已提交
8352 8353
MODULE_PARM_DESC(queues_num, "number of hw queues.");

C
Christoph Hellwig 已提交
8354 8355
module_exit(iwl3945_exit);
module_init(iwl3945_init);