iwl3945-base.c 234.1 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:
 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.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>
#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 */
static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
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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_VERSION     IWLWIFI_VERSION


MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT);
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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}

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static int iwl3945_is_empty_essid(const char *essid, int essid_len)
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{
	/* Single white space is for Linksys APs */
	if (essid_len == 1 && essid[0] == ' ')
		return 1;

	/* Otherwise, if the entire essid is 0, we assume it is hidden */
	while (essid_len) {
		essid_len--;
		if (essid[essid_len] != '\0')
			return 0;
	}

	return 1;
}

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static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
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{
	static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
	const char *s = essid;
	char *d = escaped;

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	if (iwl3945_is_empty_essid(essid, essid_len)) {
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		memcpy(escaped, "<hidden>", sizeof("<hidden>"));
		return escaped;
	}

	essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
	while (essid_len--) {
		if (*s == '\0') {
			*d++ = '\\';
			*d++ = '0';
			s++;
		} else
			*d++ = *s++;
	}
	*d = '\0';
	return escaped;
}

/*************** 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;

 error:
	if (txq->txb) {
		kfree(txq->txb);
		txq->txb = NULL;
	}

	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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	if (txq->txb) {
		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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	DECLARE_MAC_BUF(mac);
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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: %s\n", index, print_mac(mac, 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);
}

C
Christoph Hellwig 已提交
540
static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
541 542 543 544 545
{
	return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
	       test_bit(STATUS_RF_KILL_SW, &priv->status);
}

C
Christoph Hellwig 已提交
546
static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
547 548
{

C
Christoph Hellwig 已提交
549
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
550 551
		return 0;

C
Christoph Hellwig 已提交
552
	return iwl3945_is_ready(priv);
Z
Zhu Yi 已提交
553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610
}

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

#define IWL_CMD(x) case x : return #x

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
611
 * iwl3945_enqueue_hcmd - enqueue a uCode command
Z
Zhu Yi 已提交
612 613 614 615 616 617 618
 * @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
619
static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
620
{
C
Christoph Hellwig 已提交
621 622 623
	struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
	struct iwl3945_queue *q = &txq->q;
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
624
	u32 *control_flags;
C
Christoph Hellwig 已提交
625
	struct iwl3945_cmd *out_cmd;
Z
Zhu Yi 已提交
626 627 628 629 630 631 632 633 634 635 636 637 638 639
	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));

640 641 642 643 644 645

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

C
Christoph Hellwig 已提交
646
	if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
Z
Zhu Yi 已提交
647 648 649 650 651 652
		IWL_ERROR("No space for Tx\n");
		return -ENOSPC;
	}

	spin_lock_irqsave(&priv->hcmd_lock, flags);

653
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
654 655 656 657
	memset(tfd, 0, sizeof(*tfd));

	control_flags = (u32 *) tfd;

658
	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
Z
Zhu Yi 已提交
659 660 661 662 663 664 665 666 667 668 669
	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) |
670
			INDEX_TO_SEQ(q->write_ptr));
Z
Zhu Yi 已提交
671 672 673 674
	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
675 676
			offsetof(struct iwl3945_cmd, hdr);
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
Z
Zhu Yi 已提交
677 678 679 680 681 682 683 684 685

	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),
686
		     fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Z
Zhu Yi 已提交
687 688

	txq->need_update = 1;
689 690

	/* Increment and update queue's write index */
T
Tomas Winkler 已提交
691
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
692
	ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
693 694 695 696 697

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

C
Christoph Hellwig 已提交
698
static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
699 700 701 702 703 704 705 706 707 708 709 710 711 712
{
	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
713
	ret = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
714
	if (ret < 0) {
C
Christoph Hellwig 已提交
715
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
716 717 718 719 720 721
			  get_cmd_string(cmd->id), ret);
		return ret;
	}
	return 0;
}

C
Christoph Hellwig 已提交
722
static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
723 724 725 726 727 728 729 730 731
{
	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);

732
	if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
Z
Zhu Yi 已提交
733 734
		IWL_ERROR("Error sending %s: Already sending a host command\n",
			  get_cmd_string(cmd->id));
735 736
		ret = -EBUSY;
		goto out;
Z
Zhu Yi 已提交
737 738 739 740 741 742 743
	}

	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
744
	cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
745 746
	if (cmd_idx < 0) {
		ret = cmd_idx;
C
Christoph Hellwig 已提交
747
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790
			  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
791
		struct iwl3945_cmd *qcmd;
Z
Zhu Yi 已提交
792 793 794 795 796 797 798 799 800 801 802 803 804 805

		/* 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:
806
	clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
Z
Zhu Yi 已提交
807 808 809
	return ret;
}

C
Christoph Hellwig 已提交
810
int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
811 812
{
	if (cmd->meta.flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
813
		return iwl3945_send_cmd_async(priv, cmd);
Z
Zhu Yi 已提交
814

C
Christoph Hellwig 已提交
815
	return iwl3945_send_cmd_sync(priv, cmd);
Z
Zhu Yi 已提交
816 817
}

C
Christoph Hellwig 已提交
818
int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
Z
Zhu Yi 已提交
819
{
C
Christoph Hellwig 已提交
820
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
821 822 823 824 825
		.id = id,
		.len = len,
		.data = data,
	};

C
Christoph Hellwig 已提交
826
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
827 828
}

C
Christoph Hellwig 已提交
829
static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
Z
Zhu Yi 已提交
830
{
C
Christoph Hellwig 已提交
831
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
832 833 834 835 836
		.id = id,
		.len = sizeof(val),
		.data = &val,
	};

C
Christoph Hellwig 已提交
837
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
838 839
}

C
Christoph Hellwig 已提交
840
int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
841
{
C
Christoph Hellwig 已提交
842
	return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Z
Zhu Yi 已提交
843 844 845
}

/**
C
Christoph Hellwig 已提交
846
 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
847 848
 * @band: 2.4 or 5 GHz band
 * @channel: Any channel valid for the requested band
Z
Zhu Yi 已提交
849

850
 * In addition to setting the staging RXON, priv->band is also set.
Z
Zhu Yi 已提交
851 852
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
853
 * in the staging RXON flag structure based on the band
Z
Zhu Yi 已提交
854
 */
855 856 857
static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
				    enum ieee80211_band band,
				    u16 channel)
Z
Zhu Yi 已提交
858
{
859
	if (!iwl3945_get_channel_info(priv, band, channel)) {
Z
Zhu Yi 已提交
860
		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
861
			       channel, band);
Z
Zhu Yi 已提交
862 863 864 865
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
866
	    (priv->band == band))
Z
Zhu Yi 已提交
867 868 869
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
870
	if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
871 872 873 874
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

875
	priv->band = band;
Z
Zhu Yi 已提交
876

877
	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Z
Zhu Yi 已提交
878 879 880 881 882

	return 0;
}

/**
C
Christoph Hellwig 已提交
883
 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Z
Zhu Yi 已提交
884 885 886 887 888
 *
 * 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
889
static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
{
	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
955
		IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
Z
Zhu Yi 已提交
956 957 958 959 960 961
		return -1;
	}
	return 0;
}

/**
962
 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
963
 * @priv: staging_rxon is compared to active_rxon
Z
Zhu Yi 已提交
964
 *
965 966 967
 * 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
968
 */
C
Christoph Hellwig 已提交
969
static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003
{

	/* These items are only settable from the full RXON command */
	if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
	    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;
}

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Christoph Hellwig 已提交
1004
static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
Z
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{
	int rc = 0;
C
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	struct iwl3945_rx_packet *res = NULL;
	struct iwl3945_rxon_assoc_cmd rxon_assoc;
	struct iwl3945_host_cmd cmd = {
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		.id = REPLY_RXON_ASSOC,
		.len = sizeof(rxon_assoc),
		.meta.flags = CMD_WANT_SKB,
		.data = &rxon_assoc,
	};
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	const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
	const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
Z
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	if ((rxon1->flags == rxon2->flags) &&
	    (rxon1->filter_flags == rxon2->filter_flags) &&
	    (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
	    (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
		IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
		return 0;
	}

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

C
Christoph Hellwig 已提交
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	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
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	if (rc)
		return rc;

C
Christoph Hellwig 已提交
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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
1049
 * iwl3945_commit_rxon - commit staging_rxon to hardware
Z
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1050
 *
1051
 * 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
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static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
Z
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1057 1058
{
	/* cast away the const for active_rxon in this function */
C
Christoph Hellwig 已提交
1059
	struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
Z
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1060
	int rc = 0;
1061
	DECLARE_MAC_BUF(mac);
Z
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1062

C
Christoph Hellwig 已提交
1063
	if (!iwl3945_is_alive(priv))
Z
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		return -1;

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

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

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

	/* If we don't need to send a full RXON, we can use
C
Christoph Hellwig 已提交
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	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
Z
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	 * and other flags for the current radio configuration. */
C
Christoph Hellwig 已提交
1083 1084
	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
Christoph Hellwig 已提交
1105 1106
		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"
1122
		       "* bssid = %s\n",
Z
Zhu Yi 已提交
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		       ((priv->staging_rxon.filter_flags &
			 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
		       le16_to_cpu(priv->staging_rxon.channel),
1126
		       print_mac(mac, priv->staging_rxon.bssid_addr));
Z
Zhu Yi 已提交
1127 1128

	/* Apply the new configuration */
C
Christoph Hellwig 已提交
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	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
			      sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
Z
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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
1138
	iwl3945_clear_stations_table(priv);
1139

Z
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1140 1141
	/* If we issue a new RXON command which required a tune then we must
	 * send a new TXPOWER command or we won't be able to Tx any frames */
C
Christoph Hellwig 已提交
1142
	rc = iwl3945_hw_reg_send_txpower(priv);
Z
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1143 1144 1145 1146 1147 1148
	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
1149
	if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
Z
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1150 1151 1152 1153 1154 1155 1156
	    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
1157
	if (iwl3945_is_associated(priv) &&
Z
Zhu Yi 已提交
1158
	    (priv->iw_mode == IEEE80211_IF_TYPE_STA))
C
Christoph Hellwig 已提交
1159
		if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
Z
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1160 1161 1162 1163 1164
		    == IWL_INVALID_STATION) {
			IWL_ERROR("Error adding AP address for transmit.\n");
			return -EIO;
		}

1165
	/* Init the hardware's rate fallback order based on the band */
Z
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1166 1167 1168 1169 1170 1171 1172 1173 1174
	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
1175
static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
Z
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1176
{
C
Christoph Hellwig 已提交
1177
	struct iwl3945_bt_cmd bt_cmd = {
Z
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1178 1179 1180 1181 1182 1183 1184
		.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
Christoph Hellwig 已提交
1189
static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
Z
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1190 1191
{
	int rc = 0;
C
Christoph Hellwig 已提交
1192 1193
	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
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1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
		.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
1206
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
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	if (rc) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return rc;
	}

C
Christoph Hellwig 已提交
1212
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
	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
Christoph Hellwig 已提交
1230 1231
static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
					struct iwl3945_cmd *cmd,
Z
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1232 1233 1234 1235 1236 1237 1238 1239
					struct sk_buff *skb)
{
	return 1;
}

/*
 * CARD_STATE_CMD
 *
1240
 * Use: Sets the device's internal card state to enable, disable, or halt
Z
Zhu Yi 已提交
1241 1242 1243 1244 1245 1246
 *
 * 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
1247
static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
Z
Zhu Yi 已提交
1248
{
C
Christoph Hellwig 已提交
1249
	struct iwl3945_host_cmd cmd = {
Z
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1250 1251 1252 1253 1254 1255 1256
		.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
1257
		cmd.meta.u.callback = iwl3945_card_state_sync_callback;
Z
Zhu Yi 已提交
1258

C
Christoph Hellwig 已提交
1259
	return iwl3945_send_cmd(priv, &cmd);
Z
Zhu Yi 已提交
1260 1261
}

C
Christoph Hellwig 已提交
1262 1263
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
1264
{
C
Christoph Hellwig 已提交
1265
	struct iwl3945_rx_packet *res = NULL;
Z
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1266 1267 1268 1269 1270 1271

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

C
Christoph Hellwig 已提交
1272
	res = (struct iwl3945_rx_packet *)skb->data;
Z
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1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
	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
1290 1291
int iwl3945_send_add_station(struct iwl3945_priv *priv,
			 struct iwl3945_addsta_cmd *sta, u8 flags)
Z
Zhu Yi 已提交
1292
{
C
Christoph Hellwig 已提交
1293
	struct iwl3945_rx_packet *res = NULL;
Z
Zhu Yi 已提交
1294
	int rc = 0;
C
Christoph Hellwig 已提交
1295
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
1296
		.id = REPLY_ADD_STA,
C
Christoph Hellwig 已提交
1297
		.len = sizeof(struct iwl3945_addsta_cmd),
Z
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1298 1299 1300 1301 1302
		.meta.flags = flags,
		.data = sta,
	};

	if (flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
1303
		cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Z
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1304 1305 1306
	else
		cmd.meta.flags |= CMD_WANT_SKB;

C
Christoph Hellwig 已提交
1307
	rc = iwl3945_send_cmd(priv, &cmd);
Z
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1308 1309 1310 1311

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

C
Christoph Hellwig 已提交
1312
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336
	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
1337
static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
				   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
1371
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1372 1373 1374
	return 0;
}

C
Christoph Hellwig 已提交
1375
static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
Z
Zhu Yi 已提交
1376 1377 1378 1379
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
C
Christoph Hellwig 已提交
1380 1381
	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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1382 1383 1384 1385 1386 1387
	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
1388
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1389 1390 1391
	return 0;
}

C
Christoph Hellwig 已提交
1392
static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1393 1394 1395 1396 1397 1398 1399 1400 1401
{
	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
1402
		kfree(list_entry(element, struct iwl3945_frame, list));
Z
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1403 1404 1405 1406 1407 1408 1409 1410 1411 1412
		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
1413
static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1414
{
C
Christoph Hellwig 已提交
1415
	struct iwl3945_frame *frame;
Z
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1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429
	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
1430
	return list_entry(element, struct iwl3945_frame, list);
Z
Zhu Yi 已提交
1431 1432
}

C
Christoph Hellwig 已提交
1433
static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
Z
Zhu Yi 已提交
1434 1435 1436 1437 1438
{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

C
Christoph Hellwig 已提交
1439
unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1440 1441 1442 1443
				struct ieee80211_hdr *hdr,
				const u8 *dest, int left)
{

C
Christoph Hellwig 已提交
1444
	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
Z
Zhu Yi 已提交
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456
	    ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
	     (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
		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;
}

C
Christoph Hellwig 已提交
1457
static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
Z
Zhu Yi 已提交
1458 1459 1460 1461
{
	u8 i;

	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
C
Christoph Hellwig 已提交
1462
	     i = iwl3945_rates[i].next_ieee) {
Z
Zhu Yi 已提交
1463
		if (rate_mask & (1 << i))
C
Christoph Hellwig 已提交
1464
			return iwl3945_rates[i].plcp;
Z
Zhu Yi 已提交
1465 1466 1467 1468 1469
	}

	return IWL_RATE_INVALID;
}

C
Christoph Hellwig 已提交
1470
static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1471
{
C
Christoph Hellwig 已提交
1472
	struct iwl3945_frame *frame;
Z
Zhu Yi 已提交
1473 1474 1475 1476
	unsigned int frame_size;
	int rc;
	u8 rate;

C
Christoph Hellwig 已提交
1477
	frame = iwl3945_get_free_frame(priv);
Z
Zhu Yi 已提交
1478 1479 1480 1481 1482 1483 1484 1485

	if (!frame) {
		IWL_ERROR("Could not obtain free frame buffer for beacon "
			  "command.\n");
		return -ENOMEM;
	}

	if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
C
Christoph Hellwig 已提交
1486
		rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
Z
Zhu Yi 已提交
1487 1488 1489 1490
						0xFF0);
		if (rate == IWL_INVALID_RATE)
			rate = IWL_RATE_6M_PLCP;
	} else {
C
Christoph Hellwig 已提交
1491
		rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
Z
Zhu Yi 已提交
1492 1493 1494 1495
		if (rate == IWL_INVALID_RATE)
			rate = IWL_RATE_1M_PLCP;
	}

C
Christoph Hellwig 已提交
1496
	frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Z
Zhu Yi 已提交
1497

C
Christoph Hellwig 已提交
1498
	rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Z
Zhu Yi 已提交
1499 1500
			      &frame->u.cmd[0]);

C
Christoph Hellwig 已提交
1501
	iwl3945_free_frame(priv, frame);
Z
Zhu Yi 已提交
1502 1503 1504 1505 1506 1507 1508 1509 1510 1511

	return rc;
}

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

C
Christoph Hellwig 已提交
1512
static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
Z
Zhu Yi 已提交
1513 1514 1515 1516
{
	memcpy(mac, priv->eeprom.mac_address, 6);
}

1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530
/*
 * 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
Zhu Yi 已提交
1531
/**
C
Christoph Hellwig 已提交
1532
 * iwl3945_eeprom_init - read EEPROM contents
Z
Zhu Yi 已提交
1533
 *
1534
 * Load the EEPROM contents from adapter into priv->eeprom
Z
Zhu Yi 已提交
1535 1536 1537
 *
 * NOTE:  This routine uses the non-debug IO access functions.
 */
C
Christoph Hellwig 已提交
1538
int iwl3945_eeprom_init(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1539
{
1540
	u16 *e = (u16 *)&priv->eeprom;
C
Christoph Hellwig 已提交
1541
	u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
Z
Zhu Yi 已提交
1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558
	u32 r;
	int sz = sizeof(priv->eeprom);
	int rc;
	int i;
	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) {
		IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
		return -ENOENT;
	}

1559
	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
C
Christoph Hellwig 已提交
1560
	rc = iwl3945_eeprom_acquire_semaphore(priv);
Z
Zhu Yi 已提交
1561
	if (rc < 0) {
1562
		IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
Z
Zhu Yi 已提交
1563 1564 1565 1566 1567
		return -ENOENT;
	}

	/* eeprom is an array of 16bit values */
	for (addr = 0; addr < sz; addr += sizeof(u16)) {
C
Christoph Hellwig 已提交
1568 1569
		_iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
		_iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
Z
Zhu Yi 已提交
1570 1571 1572

		for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
					i += IWL_EEPROM_ACCESS_DELAY) {
C
Christoph Hellwig 已提交
1573
			r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
Z
Zhu Yi 已提交
1574 1575 1576 1577 1578 1579 1580 1581 1582
			if (r & CSR_EEPROM_REG_READ_VALID_MSK)
				break;
			udelay(IWL_EEPROM_ACCESS_DELAY);
		}

		if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
			IWL_ERROR("Time out reading EEPROM[%d]", addr);
			return -ETIMEDOUT;
		}
1583
		e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
Z
Zhu Yi 已提交
1584 1585 1586 1587 1588
	}

	return 0;
}

C
Christoph Hellwig 已提交
1589
static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1590 1591 1592
{
	if (priv->hw_setting.shared_virt)
		pci_free_consistent(priv->pci_dev,
C
Christoph Hellwig 已提交
1593
				    sizeof(struct iwl3945_shared),
Z
Zhu Yi 已提交
1594 1595 1596 1597 1598
				    priv->hw_setting.shared_virt,
				    priv->hw_setting.shared_phys);
}

/**
C
Christoph Hellwig 已提交
1599
 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Z
Zhu Yi 已提交
1600 1601 1602
 *
 * return : set the bit for each supported rate insert in ie
 */
C
Christoph Hellwig 已提交
1603
static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1604
				    u16 basic_rate, int *left)
Z
Zhu Yi 已提交
1605 1606 1607
{
	u16 ret_rates = 0, bit;
	int i;
1608 1609
	u8 *cnt = ie;
	u8 *rates = ie + 1;
Z
Zhu Yi 已提交
1610 1611 1612 1613

	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
1614
			rates[*cnt] = iwl3945_rates[i].ieee |
1615 1616 1617 1618 1619
				((bit & basic_rate) ? 0x80 : 0x00);
			(*cnt)++;
			(*left)--;
			if ((*left <= 0) ||
			    (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
Z
Zhu Yi 已提交
1620 1621 1622 1623 1624 1625 1626 1627
				break;
		}
	}

	return ret_rates;
}

/**
C
Christoph Hellwig 已提交
1628
 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Z
Zhu Yi 已提交
1629
 */
C
Christoph Hellwig 已提交
1630
static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1631 1632 1633 1634 1635
			      struct ieee80211_mgmt *frame,
			      int left, int is_direct)
{
	int len = 0;
	u8 *pos = NULL;
1636
	u16 active_rates, ret_rates, cck_rates;
Z
Zhu Yi 已提交
1637 1638 1639 1640 1641 1642 1643 1644 1645

	/* 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
1646
	memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
Z
Zhu Yi 已提交
1647
	memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
C
Christoph Hellwig 已提交
1648
	memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
Z
Zhu Yi 已提交
1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680
	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 our direct SSID IE... */
	if (is_direct) {
		/* ...next IE... */
		left -= 2 + priv->essid_len;
		if (left < 0)
			return 0;
		/* ... fill it in... */
		*pos++ = WLAN_EID_SSID;
		*pos++ = priv->essid_len;
		memcpy(pos, priv->essid, priv->essid_len);
		pos += priv->essid_len;
		len += 2 + priv->essid_len;
	}

	/* fill in supported rate */
	/* ...next IE... */
	left -= 2;
	if (left < 0)
		return 0;
1681

Z
Zhu Yi 已提交
1682 1683 1684
	/* ... fill it in... */
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos = 0;
1685 1686 1687

	priv->active_rate = priv->rates_mask;
	active_rates = priv->active_rate;
Z
Zhu Yi 已提交
1688 1689
	priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;

1690
	cck_rates = IWL_CCK_RATES_MASK & active_rates;
C
Christoph Hellwig 已提交
1691
	ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1692 1693 1694
			priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

C
Christoph Hellwig 已提交
1695
	ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1696 1697 1698
				 priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

Z
Zhu Yi 已提交
1699 1700
	len += 2 + *pos;
	pos += (*pos) + 1;
1701
	if (active_rates == 0)
Z
Zhu Yi 已提交
1702 1703 1704 1705 1706 1707 1708 1709 1710 1711
		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
1712
	iwl3945_supported_rate_to_ie(pos, active_rates,
1713
				 priv->active_rate_basic, &left);
Z
Zhu Yi 已提交
1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
	if (*pos > 0)
		len += 2 + *pos;

 fill_end:
	return (u16)len;
}

/*
 * QoS  support
*/
C
Christoph Hellwig 已提交
1724 1725
static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
				       struct iwl3945_qosparam_cmd *qos)
Z
Zhu Yi 已提交
1726 1727
{

C
Christoph Hellwig 已提交
1728 1729
	return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
				sizeof(struct iwl3945_qosparam_cmd), qos);
Z
Zhu Yi 已提交
1730 1731
}

C
Christoph Hellwig 已提交
1732
static void iwl3945_reset_qos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
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 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818
{
	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;

	if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
		if (priv->qos_data.qos_enable)
			priv->qos_data.qos_active = 1;
		if (!(priv->active_rate & 0xfff0)) {
			cw_min = 31;
			is_legacy = 1;
		}
	} else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		if (priv->qos_data.qos_enable)
			priv->qos_data.qos_active = 1;
	} else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
		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
1819
static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
Z
Zhu Yi 已提交
1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842
{
	unsigned long flags;

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

	if (!priv->qos_data.qos_enable)
		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
1843
	if (force || iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
1844 1845 1846
		IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
			      priv->qos_data.qos_active);

C
Christoph Hellwig 已提交
1847
		iwl3945_send_qos_params_command(priv,
Z
Zhu Yi 已提交
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868
				&(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 */
/* for tim  0-10 */
C
Christoph Hellwig 已提交
1869
static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1870 1871 1872 1873 1874 1875 1876 1877 1878
	{{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}
};

/* for tim > 10 */
C
Christoph Hellwig 已提交
1879
static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
	{{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
1892
int iwl3945_power_init_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1893 1894
{
	int rc = 0, i;
C
Christoph Hellwig 已提交
1895 1896
	struct iwl3945_power_mgr *pow_data;
	int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
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	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 {
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		struct iwl3945_powertable_cmd *cmd;
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		IWL_DEBUG_POWER("adjust power command flags\n");

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

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

C
Christoph Hellwig 已提交
1931 1932
static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
				struct iwl3945_powertable_cmd *cmd, u32 mode)
Z
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1933 1934 1935 1936
{
	int rc = 0, i;
	u8 skip;
	u32 max_sleep = 0;
C
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1937
	struct iwl3945_power_vec_entry *range;
Z
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1938
	u8 period = 0;
C
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1939
	struct iwl3945_power_mgr *pow_data;
Z
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1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951

	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];

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

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

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

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

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

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

	return rc;
}

C
Christoph Hellwig 已提交
1995
static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
Z
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1996
{
1997
	u32 uninitialized_var(final_mode);
Z
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1998
	int rc;
C
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1999
	struct iwl3945_powertable_cmd cmd;
Z
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2000 2001

	/* If on battery, set to 3,
2002
	 * if plugged into AC power, set to CAM ("continuously aware mode"),
Z
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	 * 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
2016
	iwl3945_update_power_cmd(priv, &cmd, final_mode);
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C
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2018
	rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
Z
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2019 2020 2021 2022 2023 2024 2025 2026 2027

	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
2028
int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
Z
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2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050
{
	/* Filter incoming packets to determine if they are targeted toward
	 * this network, discarding packets coming from ourselves */
	switch (priv->iw_mode) {
	case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
		/* packets from our adapter are dropped (echo) */
		if (!compare_ether_addr(header->addr2, priv->mac_addr))
			return 0;
		/* {broad,multi}cast packets to our IBSS go through */
		if (is_multicast_ether_addr(header->addr1))
			return !compare_ether_addr(header->addr3, priv->bssid);
		/* packets to our adapter go through */
		return !compare_ether_addr(header->addr1, priv->mac_addr);
	case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
		/* packets from our adapter are dropped (echo) */
		if (!compare_ether_addr(header->addr3, priv->mac_addr))
			return 0;
		/* {broad,multi}cast packets to our BSS go through */
		if (is_multicast_ether_addr(header->addr1))
			return !compare_ether_addr(header->addr2, priv->bssid);
		/* packets to our adapter go through */
		return !compare_ether_addr(header->addr1, priv->mac_addr);
2051 2052
	default:
		return 1;
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	}

	return 1;
}

/**
C
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 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Z
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 *
 * NOTE: priv->mutex is not required before calling this function
 */
C
Christoph Hellwig 已提交
2063
static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
Z
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{
	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
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 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Z
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 * @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
2091
static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
Z
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2092 2093 2094 2095
{
	unsigned long now = jiffies;
	int ret;

C
Christoph Hellwig 已提交
2096
	ret = iwl3945_scan_cancel(priv);
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	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;
}

C
Christoph Hellwig 已提交
2110
static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
Z
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2111 2112 2113 2114 2115 2116 2117 2118 2119 2120
{
	/* Reset ieee stats */

	/* We don't reset the net_device_stats (ieee->stats) on
	 * re-association */

	priv->last_seq_num = -1;
	priv->last_frag_num = -1;
	priv->last_packet_time = 0;

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	iwl3945_scan_cancel(priv);
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}

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

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2127
static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
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2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
{
	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
2140
static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
Z
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2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169
{
	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);

	if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
		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
2170
			    iwl3945_adjust_beacon_interval(
Z
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2171 2172 2173 2174 2175 2176
				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
2177
			iwl3945_adjust_beacon_interval(conf->beacon_int);
Z
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		/* 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
2196
static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
Z
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2197 2198 2199 2200 2201 2202
{
	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		IWL_ERROR("APs don't scan.\n");
		return 0;
	}

C
Christoph Hellwig 已提交
2203
	if (!iwl3945_is_ready_rf(priv)) {
Z
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		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");
2220 2221 2222 2223
	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);
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2224 2225 2226 2227 2228 2229 2230 2231 2232
	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
2233
static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
Z
Zhu Yi 已提交
2234
{
C
Christoph Hellwig 已提交
2235
	struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
Z
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2236 2237 2238 2239 2240 2241 2242 2243 2244

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

	return 0;
}

2245 2246
static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
2247
{
2248
	if (band == IEEE80211_BAND_5GHZ) {
Z
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2249 2250 2251 2252 2253
		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
2254
		/* Copied from iwl3945_bg_post_associate() */
Z
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2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269
		if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
			priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
		else
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

		if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
			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;
	}
}

/*
2270
 * initialize rxon structure with default values from eeprom
Z
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2271
 */
C
Christoph Hellwig 已提交
2272
static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2273
{
C
Christoph Hellwig 已提交
2274
	const struct iwl3945_channel_info *ch_info;
Z
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2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299

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

	switch (priv->iw_mode) {
	case IEEE80211_IF_TYPE_AP:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
		break;

	case IEEE80211_IF_TYPE_STA:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
		priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	case IEEE80211_IF_TYPE_IBSS:
		priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
		priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
		priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
						  RXON_FILTER_ACCEPT_GRP_MSK;
		break;

	case IEEE80211_IF_TYPE_MNTR:
		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;
2300 2301 2302
	default:
		IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
		break;
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2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313
	}

#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

2314
	ch_info = iwl3945_get_channel_info(priv, priv->band,
Z
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2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329
				       le16_to_cpu(priv->staging_rxon.channel));

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

	/*
	 * in some case A channels are all non IBSS
	 * in this case force B/G channel
	 */
	if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
	    !(is_channel_ibss(ch_info)))
		ch_info = &priv->channel_info[0];

	priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
	if (is_channel_a_band(ch_info))
2330
		priv->band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
2331
	else
2332
		priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
2333

2334
	iwl3945_set_flags_for_phymode(priv, priv->band);
Z
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2335 2336 2337 2338 2339 2340 2341

	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
2342
static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
Z
Zhu Yi 已提交
2343 2344
{
	if (mode == IEEE80211_IF_TYPE_IBSS) {
C
Christoph Hellwig 已提交
2345
		const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2346

C
Christoph Hellwig 已提交
2347
		ch_info = iwl3945_get_channel_info(priv,
2348
			priv->band,
Z
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2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359
			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;
		}
	}

	priv->iw_mode = mode;

C
Christoph Hellwig 已提交
2360
	iwl3945_connection_init_rx_config(priv);
Z
Zhu Yi 已提交
2361 2362
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);

C
Christoph Hellwig 已提交
2363
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
2364

2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375
	/* dont commit rxon if rf-kill is on*/
	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
2376
	iwl3945_commit_rxon(priv);
Z
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2377 2378 2379 2380

	return 0;
}

C
Christoph Hellwig 已提交
2381
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2382
				      struct ieee80211_tx_info *info,
C
Christoph Hellwig 已提交
2383
				      struct iwl3945_cmd *cmd,
Z
Zhu Yi 已提交
2384 2385 2386
				      struct sk_buff *skb_frag,
				      int last_frag)
{
2387
	struct iwl3945_hw_key *keyinfo =
2388
	    &priv->stations[info->control.hw_key->hw_key_idx].keyinfo;
Z
Zhu Yi 已提交
2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410

	switch (keyinfo->alg) {
	case ALG_CCMP:
		cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
		memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
		IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
		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 |
2411
		    (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
Z
Zhu Yi 已提交
2412 2413 2414 2415 2416 2417 2418

		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 "
2419
			     "with key %d\n", info->control.hw_key->hw_key_idx);
Z
Zhu Yi 已提交
2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430
		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
2431 2432
static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
				  struct iwl3945_cmd *cmd,
2433
				  struct ieee80211_tx_info *info,
Z
Zhu Yi 已提交
2434 2435 2436
				  struct ieee80211_hdr *hdr,
				  int is_unicast, u8 std_id)
{
2437
	__le16 fc = hdr->frame_control;
Z
Zhu Yi 已提交
2438 2439 2440
	__le32 tx_flags = cmd->cmd.tx.tx_flags;

	cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2441
	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
Z
Zhu Yi 已提交
2442
		tx_flags |= TX_CMD_FLG_ACK_MSK;
2443
		if (ieee80211_is_mgmt(fc))
Z
Zhu Yi 已提交
2444
			tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2445
		if (ieee80211_is_probe_resp(fc) &&
Z
Zhu Yi 已提交
2446 2447 2448 2449 2450 2451 2452 2453
		    !(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;
2454
	if (ieee80211_has_morefrags(fc))
Z
Zhu Yi 已提交
2455 2456
		tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;

2457 2458
	if (ieee80211_is_data_qos(fc)) {
		u8 *qc = ieee80211_get_qos_ctl(hdr);
2459
		cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
Z
Zhu Yi 已提交
2460
		tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2461
	} else {
Z
Zhu Yi 已提交
2462
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2463
	}
Z
Zhu Yi 已提交
2464

2465
	if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
Z
Zhu Yi 已提交
2466 2467
		tx_flags |= TX_CMD_FLG_RTS_MSK;
		tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2468
	} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
Z
Zhu Yi 已提交
2469 2470 2471 2472 2473 2474 2475 2476
		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);
2477 2478
	if (ieee80211_is_mgmt(fc)) {
		if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
2479
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
Z
Zhu Yi 已提交
2480
		else
2481
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
M
Mohamed Abbas 已提交
2482
	} else {
Z
Zhu Yi 已提交
2483
		cmd->cmd.tx.timeout.pm_frame_timeout = 0;
M
Mohamed Abbas 已提交
2484 2485 2486 2487
#ifdef CONFIG_IWL3945_LEDS
		priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
#endif
	}
Z
Zhu Yi 已提交
2488 2489 2490 2491 2492 2493

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

2494 2495 2496
/**
 * iwl3945_get_sta_id - Find station's index within station table
 */
C
Christoph Hellwig 已提交
2497
static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
Z
Zhu Yi 已提交
2498 2499 2500 2501
{
	int sta_id;
	u16 fc = le16_to_cpu(hdr->frame_control);

2502
	/* If this frame is broadcast or management, use broadcast station id */
Z
Zhu Yi 已提交
2503 2504 2505 2506 2507 2508
	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) {

2509 2510
	/* If we are a client station in a BSS network, use the special
	 * AP station entry (that's the only station we communicate with) */
Z
Zhu Yi 已提交
2511 2512 2513 2514 2515
	case IEEE80211_IF_TYPE_STA:
		return IWL_AP_ID;

	/* If we are an AP, then find the station, or use BCAST */
	case IEEE80211_IF_TYPE_AP:
C
Christoph Hellwig 已提交
2516
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2517 2518 2519 2520
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
		return priv->hw_setting.bcast_sta_id;

2521 2522
	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
2523 2524 2525
	case IEEE80211_IF_TYPE_IBSS: {
		DECLARE_MAC_BUF(mac);

2526
		/* Create new station table entry */
C
Christoph Hellwig 已提交
2527
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2528 2529 2530
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

C
Christoph Hellwig 已提交
2531
		sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Z
Zhu Yi 已提交
2532 2533 2534 2535

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

2536
		IWL_DEBUG_DROP("Station %s not in station map. "
Z
Zhu Yi 已提交
2537
			       "Defaulting to broadcast...\n",
2538
			       print_mac(mac, hdr->addr1));
C
Christoph Hellwig 已提交
2539
		iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Z
Zhu Yi 已提交
2540
		return priv->hw_setting.bcast_sta_id;
2541
	}
Z
Zhu Yi 已提交
2542
	default:
2543
		IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
Z
Zhu Yi 已提交
2544 2545 2546 2547 2548 2549 2550
		return priv->hw_setting.bcast_sta_id;
	}
}

/*
 * start REPLY_TX command process
 */
2551
static int iwl3945_tx_skb(struct iwl3945_priv *priv, struct sk_buff *skb)
Z
Zhu Yi 已提交
2552 2553
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2554
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
C
Christoph Hellwig 已提交
2555
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
2556
	u32 *control_flags;
2557
	int txq_id = skb_get_queue_mapping(skb);
C
Christoph Hellwig 已提交
2558 2559
	struct iwl3945_tx_queue *txq = NULL;
	struct iwl3945_queue *q = NULL;
Z
Zhu Yi 已提交
2560 2561
	dma_addr_t phys_addr;
	dma_addr_t txcmd_phys;
C
Christoph Hellwig 已提交
2562
	struct iwl3945_cmd *out_cmd = NULL;
2563 2564 2565
	u16 len, idx, len_org, hdr_len;
	u8 id;
	u8 unicast;
Z
Zhu Yi 已提交
2566
	u8 sta_id;
2567
	u8 tid = 0;
Z
Zhu Yi 已提交
2568
	u16 seq_number = 0;
2569
	__le16 fc;
Z
Zhu Yi 已提交
2570
	u8 wait_write_ptr = 0;
2571
	u8 *qc = NULL;
Z
Zhu Yi 已提交
2572 2573 2574 2575
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2576
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
2577 2578 2579 2580
		IWL_DEBUG_DROP("Dropping - RF KILL\n");
		goto drop_unlock;
	}

2581 2582
	if (!priv->vif) {
		IWL_DEBUG_DROP("Dropping - !priv->vif\n");
Z
Zhu Yi 已提交
2583 2584 2585
		goto drop_unlock;
	}

2586
	if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
Z
Zhu Yi 已提交
2587 2588 2589 2590 2591 2592 2593
		IWL_ERROR("ERROR: No TX rate available.\n");
		goto drop_unlock;
	}

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

2594
	fc = hdr->frame_control;
Z
Zhu Yi 已提交
2595

2596
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
2597 2598
	if (ieee80211_is_auth(fc))
		IWL_DEBUG_TX("Sending AUTH frame\n");
2599
	else if (ieee80211_is_assoc_req(fc))
Z
Zhu Yi 已提交
2600
		IWL_DEBUG_TX("Sending ASSOC frame\n");
2601
	else if (ieee80211_is_reassoc_req(fc))
Z
Zhu Yi 已提交
2602 2603 2604
		IWL_DEBUG_TX("Sending REASSOC frame\n");
#endif

2605
	/* drop all data frame if we are not associated */
2606 2607
	if ((!iwl3945_is_associated(priv) ||
	     ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id)) &&
2608
	    ieee80211_is_data(fc)) {
C
Christoph Hellwig 已提交
2609
		IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
Z
Zhu Yi 已提交
2610 2611 2612 2613 2614
		goto drop_unlock;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

2615
	hdr_len = ieee80211_get_hdrlen(le16_to_cpu(fc));
2616 2617

	/* Find (or create) index into station table for destination station */
C
Christoph Hellwig 已提交
2618
	sta_id = iwl3945_get_sta_id(priv, hdr);
Z
Zhu Yi 已提交
2619
	if (sta_id == IWL_INVALID_STATION) {
2620 2621 2622 2623
		DECLARE_MAC_BUF(mac);

		IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
			       print_mac(mac, hdr->addr1));
Z
Zhu Yi 已提交
2624 2625 2626 2627 2628
		goto drop;
	}

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

2629 2630
	if (ieee80211_is_data_qos(fc)) {
		qc = ieee80211_get_qos_ctl(hdr);
2631
		tid = qc[0] & 0xf;
Z
Zhu Yi 已提交
2632 2633 2634 2635 2636 2637 2638
		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;
	}
2639 2640

	/* Descriptor for chosen Tx queue */
Z
Zhu Yi 已提交
2641 2642 2643 2644 2645
	txq = &priv->txq[txq_id];
	q = &txq->q;

	spin_lock_irqsave(&priv->lock, flags);

2646
	/* Set up first empty TFD within this queue's circular TFD buffer */
2647
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
2648 2649
	memset(tfd, 0, sizeof(*tfd));
	control_flags = (u32 *) tfd;
2650
	idx = get_cmd_index(q, q->write_ptr, 0);
Z
Zhu Yi 已提交
2651

2652
	/* Set up driver data for this TFD */
C
Christoph Hellwig 已提交
2653
	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2654
	txq->txb[q->write_ptr].skb[0] = skb;
2655 2656

	/* Init first empty entry in queue's array of Tx/cmd buffers */
Z
Zhu Yi 已提交
2657 2658 2659
	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));
2660 2661 2662 2663 2664 2665 2666

	/*
	 * 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
2667 2668
	out_cmd->hdr.cmd = REPLY_TX;
	out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2669
				INDEX_TO_SEQ(q->write_ptr)));
2670 2671

	/* Copy MAC header from skb into command buffer */
Z
Zhu Yi 已提交
2672 2673
	memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);

2674 2675 2676 2677 2678 2679 2680 2681 2682
	/*
	 * 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
2683
	len = priv->hw_setting.tx_cmd_len +
C
Christoph Hellwig 已提交
2684
		sizeof(struct iwl3945_cmd_header) + hdr_len;
Z
Zhu Yi 已提交
2685 2686 2687 2688 2689 2690 2691 2692 2693

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

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

2694 2695
	/* Physical address of this Tx command's header (not MAC header!),
	 * within command buffer array. */
C
Christoph Hellwig 已提交
2696 2697
	txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
		     offsetof(struct iwl3945_cmd, hdr);
Z
Zhu Yi 已提交
2698

2699 2700
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
C
Christoph Hellwig 已提交
2701
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Z
Zhu Yi 已提交
2702

2703 2704
	if (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT))
		iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
Z
Zhu Yi 已提交
2705

2706 2707
	/* 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
2708 2709 2710 2711
	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
2712
		iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Z
Zhu Yi 已提交
2713 2714 2715
	}

	if (!len)
2716
		/* If there is no payload, then we use only one Tx buffer */
Z
Zhu Yi 已提交
2717 2718
		*control_flags = TFD_CTL_COUNT_SET(1);
	else
2719 2720
		/* Else use 2 buffers.
		 * Tell 3945 about any padding after MAC header */
Z
Zhu Yi 已提交
2721 2722 2723
		*control_flags = TFD_CTL_COUNT_SET(2) |
			TFD_CTL_PAD_SET(U32_PAD(len));

2724
	/* Total # bytes to be transmitted */
Z
Zhu Yi 已提交
2725 2726 2727 2728
	len = (u16)skb->len;
	out_cmd->cmd.tx.len = cpu_to_le16(len);

	/* TODO need this for burst mode later on */
2729
	iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
Z
Zhu Yi 已提交
2730 2731

	/* set is_hcca to 0; it probably will never be implemented */
2732
	iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
Z
Zhu Yi 已提交
2733 2734 2735 2736

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

2737
	if (!ieee80211_has_morefrags(hdr->frame_control)) {
Z
Zhu Yi 已提交
2738 2739 2740 2741 2742 2743 2744 2745 2746
		txq->need_update = 1;
		if (qc) {
			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
2747
	iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
Z
Zhu Yi 已提交
2748 2749
			   sizeof(out_cmd->cmd.tx));

C
Christoph Hellwig 已提交
2750
	iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2751
			   ieee80211_get_hdrlen(le16_to_cpu(fc)));
Z
Zhu Yi 已提交
2752

2753
	/* Tell device the write index *just past* this latest filled TFD */
T
Tomas Winkler 已提交
2754
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
2755
	rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2756 2757 2758 2759 2760
	spin_unlock_irqrestore(&priv->lock, flags);

	if (rc)
		return rc;

C
Christoph Hellwig 已提交
2761
	if ((iwl3945_queue_space(q) < q->high_mark)
Z
Zhu Yi 已提交
2762 2763 2764 2765
	    && priv->mac80211_registered) {
		if (wait_write_ptr) {
			spin_lock_irqsave(&priv->lock, flags);
			txq->need_update = 1;
C
Christoph Hellwig 已提交
2766
			iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2767 2768 2769
			spin_unlock_irqrestore(&priv->lock, flags);
		}

2770
		ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
Z
Zhu Yi 已提交
2771 2772 2773 2774 2775 2776 2777 2778 2779 2780
	}

	return 0;

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

C
Christoph Hellwig 已提交
2781
static void iwl3945_set_rate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2782
{
2783
	const struct ieee80211_supported_band *sband = NULL;
Z
Zhu Yi 已提交
2784 2785 2786
	struct ieee80211_rate *rate;
	int i;

2787 2788
	sband = iwl3945_get_band(priv, priv->band);
	if (!sband) {
2789 2790 2791
		IWL_ERROR("Failed to set rate: unable to get hw mode\n");
		return;
	}
Z
Zhu Yi 已提交
2792 2793 2794 2795

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

2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806
	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
2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834
	}

	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
2835
static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
Z
Zhu Yi 已提交
2836 2837 2838 2839 2840 2841 2842 2843 2844 2845
{
	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
2846
		iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2847 2848 2849
		/* FIXME: This is a workaround for AP */
		if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
			spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2850
			iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
2851 2852
				    CSR_UCODE_SW_BIT_RFKILL);
			spin_unlock_irqrestore(&priv->lock, flags);
C
Christoph Hellwig 已提交
2853
			iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Z
Zhu Yi 已提交
2854 2855 2856 2857 2858 2859
			set_bit(STATUS_RF_KILL_SW, &priv->status);
		}
		return;
	}

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2860
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
2861 2862 2863 2864 2865 2866 2867 2868

	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
2869 2870 2871
	iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl3945_grab_nic_access(priv))
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
2872 2873 2874 2875 2876 2877 2878 2879
	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;
	}

2880 2881
	if (priv->is_open)
		queue_work(priv->workqueue, &priv->restart);
Z
Zhu Yi 已提交
2882 2883 2884
	return;
}

C
Christoph Hellwig 已提交
2885
void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
Z
Zhu Yi 已提交
2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918
			    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;
	}
}

#define IWL_PACKET_RETRY_TIME HZ

C
Christoph Hellwig 已提交
2919
int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
Z
Zhu Yi 已提交
2920 2921 2922 2923 2924 2925 2926 2927 2928 2929
{
	u16 sc = le16_to_cpu(header->seq_ctrl);
	u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
	u16 frag = sc & IEEE80211_SCTL_FRAG;
	u16 *last_seq, *last_frag;
	unsigned long *last_time;

	switch (priv->iw_mode) {
	case IEEE80211_IF_TYPE_IBSS:{
		struct list_head *p;
C
Christoph Hellwig 已提交
2930
		struct iwl3945_ibss_seq *entry = NULL;
Z
Zhu Yi 已提交
2931 2932 2933 2934
		u8 *mac = header->addr2;
		int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);

		__list_for_each(p, &priv->ibss_mac_hash[index]) {
C
Christoph Hellwig 已提交
2935
			entry = list_entry(p, struct iwl3945_ibss_seq, list);
Z
Zhu Yi 已提交
2936 2937 2938 2939 2940 2941
			if (!compare_ether_addr(entry->mac, mac))
				break;
		}
		if (p == &priv->ibss_mac_hash[index]) {
			entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
			if (!entry) {
2942
				IWL_ERROR("Cannot malloc new mac entry\n");
Z
Zhu Yi 已提交
2943 2944 2945 2946 2947 2948
				return 0;
			}
			memcpy(entry->mac, mac, ETH_ALEN);
			entry->seq_num = seq;
			entry->frag_num = frag;
			entry->packet_time = jiffies;
2949
			list_add(&entry->list, &priv->ibss_mac_hash[index]);
Z
Zhu Yi 已提交
2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
			return 0;
		}
		last_seq = &entry->seq_num;
		last_frag = &entry->frag_num;
		last_time = &entry->packet_time;
		break;
	}
	case IEEE80211_IF_TYPE_STA:
		last_seq = &priv->last_seq_num;
		last_frag = &priv->last_frag_num;
		last_time = &priv->last_packet_time;
		break;
	default:
		return 0;
	}
	if ((*last_seq == seq) &&
	    time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
		if (*last_frag == frag)
			goto drop;
		if (*last_frag + 1 != frag)
			/* out-of-order fragment */
			goto drop;
	} else
		*last_seq = seq;

	*last_frag = frag;
	*last_time = jiffies;
	return 0;

 drop:
	return 1;
}

2983
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997

#include "iwl-spectrum.h"

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

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

C
Christoph Hellwig 已提交
2998
static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Z
Zhu Yi 已提交
2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016
{
	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
3017
static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Z
Zhu Yi 已提交
3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035
{
	u32 base_low = base & BEACON_TIME_MASK_LOW;
	u32 addon_low = addon & BEACON_TIME_MASK_LOW;
	u32 interval = beacon_interval * TIME_UNIT;
	u32 res = (base & BEACON_TIME_MASK_HIGH) +
	    (addon & BEACON_TIME_MASK_HIGH);

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

	return cpu_to_le32(res);
}

C
Christoph Hellwig 已提交
3036
static int iwl3945_get_measurement(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3037 3038 3039
			       struct ieee80211_measurement_params *params,
			       u8 type)
{
C
Christoph Hellwig 已提交
3040 3041 3042
	struct iwl3945_spectrum_cmd spectrum;
	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
3043 3044 3045 3046 3047 3048 3049 3050 3051
		.id = REPLY_SPECTRUM_MEASUREMENT_CMD,
		.data = (void *)&spectrum,
		.meta.flags = CMD_WANT_SKB,
	};
	u32 add_time = le64_to_cpu(params->start_time);
	int rc;
	int spectrum_resp_status;
	int duration = le16_to_cpu(params->duration);

C
Christoph Hellwig 已提交
3052
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
3053
		add_time =
C
Christoph Hellwig 已提交
3054
		    iwl3945_usecs_to_beacons(
Z
Zhu Yi 已提交
3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066
			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
3067
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
3068
		spectrum.start_time =
C
Christoph Hellwig 已提交
3069
		    iwl3945_add_beacon_time(priv->last_beacon_time,
Z
Zhu Yi 已提交
3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081
				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
3082
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
3083 3084 3085
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
3086
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
3087 3088 3089 3090 3091 3092 3093 3094 3095
	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) {
3096 3097
			IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
						res->u.spectrum.id);
Z
Zhu Yi 已提交
3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114
			priv->measurement_status &= ~MEASUREMENT_READY;
		}
		priv->measurement_status |= MEASUREMENT_ACTIVE;
		rc = 0;
		break;

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

	dev_kfree_skb_any(cmd.meta.u.skb);

	return rc;
}
#endif

C
Christoph Hellwig 已提交
3115 3116
static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3117
{
C
Christoph Hellwig 已提交
3118 3119
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_alive_resp *palive;
Z
Zhu Yi 已提交
3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
	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
3133
		       sizeof(struct iwl3945_init_alive_resp));
Z
Zhu Yi 已提交
3134 3135 3136 3137
		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
3138
		       sizeof(struct iwl3945_alive_resp));
Z
Zhu Yi 已提交
3139
		pwork = &priv->alive_start;
C
Christoph Hellwig 已提交
3140
		iwl3945_disable_events(priv);
Z
Zhu Yi 已提交
3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151
	}

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

C
Christoph Hellwig 已提交
3152 3153
static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
				 struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3154
{
C
Christoph Hellwig 已提交
3155
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3156 3157 3158 3159 3160

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

C
Christoph Hellwig 已提交
3161 3162
static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3163
{
C
Christoph Hellwig 已提交
3164
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176

	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
3177
static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3178
{
C
Christoph Hellwig 已提交
3179 3180 3181
	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);
Z
Zhu Yi 已提交
3182 3183 3184 3185 3186 3187
	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
3188 3189
static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
					  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3190
{
3191
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
C
Christoph Hellwig 已提交
3192 3193
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
Z
Zhu Yi 已提交
3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205

	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
3206 3207
static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
				  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3208
{
3209
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3210 3211
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
Z
Zhu Yi 已提交
3212 3213 3214 3215 3216
	IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}

C
Christoph Hellwig 已提交
3217 3218
static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
					     struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3219
{
C
Christoph Hellwig 已提交
3220
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3221 3222 3223
	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
3224
	iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
Z
Zhu Yi 已提交
3225 3226
}

C
Christoph Hellwig 已提交
3227
static void iwl3945_bg_beacon_update(struct work_struct *work)
Z
Zhu Yi 已提交
3228
{
C
Christoph Hellwig 已提交
3229 3230
	struct iwl3945_priv *priv =
		container_of(work, struct iwl3945_priv, beacon_update);
Z
Zhu Yi 已提交
3231 3232 3233
	struct sk_buff *beacon;

	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3234
	beacon = ieee80211_beacon_get(priv->hw, priv->vif);
Z
Zhu Yi 已提交
3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248

	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
3249
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3250 3251
}

C
Christoph Hellwig 已提交
3252 3253
static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3254
{
3255
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3256 3257
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Z
Zhu Yi 已提交
3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274
	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

	if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
	    (!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
3275 3276
static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
			      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3277
{
3278
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3279 3280 3281
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanreq_notification *notif =
	    (struct iwl3945_scanreq_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3282 3283 3284 3285 3286 3287

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

/* Service SCAN_START_NOTIFICATION (0x82) */
C
Christoph Hellwig 已提交
3288 3289
static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3290
{
C
Christoph Hellwig 已提交
3291 3292 3293
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanstart_notification *notif =
	    (struct iwl3945_scanstart_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304
	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
3305 3306
static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
				      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3307
{
C
Christoph Hellwig 已提交
3308 3309 3310
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scanresults_notification *notif =
	    (struct iwl3945_scanresults_notification *)pkt->u.raw;
Z
Zhu Yi 已提交
3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325

	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;
3326
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3327 3328 3329
}

/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
C
Christoph Hellwig 已提交
3330 3331
static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
				       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3332
{
C
Christoph Hellwig 已提交
3333 3334
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
Z
Zhu Yi 已提交
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347

	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",
3348 3349
		       (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
							"2.4" : "5.2",
Z
Zhu Yi 已提交
3350 3351 3352
		       jiffies_to_msecs(elapsed_jiffies
					(priv->scan_pass_start, jiffies)));

3353 3354 3355 3356 3357 3358 3359
	/* 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
3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373

	/* 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;
3374
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392
	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
3393 3394
static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3395
{
C
Christoph Hellwig 已提交
3396
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3397 3398 3399 3400 3401 3402 3403
	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
3404
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417
		    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
3418
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429

	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
3430
 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Z
Zhu Yi 已提交
3431 3432 3433 3434 3435 3436 3437
 *
 * 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
3438
static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3439
{
C
Christoph Hellwig 已提交
3440 3441 3442 3443
	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
3444
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3445 3446
	    iwl3945_rx_spectrum_measure_notif;
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Z
Zhu Yi 已提交
3447
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
C
Christoph Hellwig 已提交
3448 3449
	    iwl3945_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Z
Zhu Yi 已提交
3450

3451 3452 3453 3454
	/*
	 * 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
3455
	 */
C
Christoph Hellwig 已提交
3456 3457
	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
3458

C
Christoph Hellwig 已提交
3459 3460
	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
3461
	priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
C
Christoph Hellwig 已提交
3462
	    iwl3945_rx_scan_results_notif;
Z
Zhu Yi 已提交
3463
	priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3464 3465
	    iwl3945_rx_scan_complete_notif;
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Z
Zhu Yi 已提交
3466

3467
	/* Set up hardware specific Rx handlers */
C
Christoph Hellwig 已提交
3468
	iwl3945_hw_rx_handler_setup(priv);
Z
Zhu Yi 已提交
3469 3470
}

3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502
/**
 * 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
3503
/**
C
Christoph Hellwig 已提交
3504
 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Z
Zhu Yi 已提交
3505 3506 3507 3508 3509 3510
 * @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
3511 3512
static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3513
{
C
Christoph Hellwig 已提交
3514
	struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3515 3516 3517 3518 3519
	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
3520
	struct iwl3945_cmd *cmd;
Z
Zhu Yi 已提交
3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534

	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;

3535
	iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Z
Zhu Yi 已提交
3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564

	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.
 *
3565
 * During initialization, the host sets up the READ queue position to the first
Z
Zhu Yi 已提交
3566 3567
 * INDEX position, and WRITE to the last (READ - 1 wrapped)
 *
3568
 * When the firmware places a packet in a buffer, it will advance the READ index
Z
Zhu Yi 已提交
3569 3570 3571 3572 3573 3574 3575
 * 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
3576
 *   to replenish the iwl->rxq->rx_free.
C
Christoph Hellwig 已提交
3577
 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Z
Zhu Yi 已提交
3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
 *   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:
 *
3590 3591
 * 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
3592
 *                            iwl3945_rx_queue_restock
3593
 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Z
Zhu Yi 已提交
3594 3595
 *                            queue, updates firmware pointers, and updates
 *                            the WRITE index.  If insufficient rx_free buffers
C
Christoph Hellwig 已提交
3596
 *                            are available, schedules iwl3945_rx_replenish
Z
Zhu Yi 已提交
3597 3598
 *
 * -- enable interrupts --
3599
 * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
Z
Zhu Yi 已提交
3600 3601
 *                            READ INDEX, detaching the SKB from the pool.
 *                            Moves the packet buffer from queue to rx_used.
C
Christoph Hellwig 已提交
3602
 *                            Calls iwl3945_rx_queue_restock to refill any empty
Z
Zhu Yi 已提交
3603 3604 3605 3606 3607 3608
 *                            slots.
 * ...
 *
 */

/**
C
Christoph Hellwig 已提交
3609
 * iwl3945_rx_queue_space - Return number of free slots available in queue.
Z
Zhu Yi 已提交
3610
 */
C
Christoph Hellwig 已提交
3611
static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623
{
	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
3624
 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
Z
Zhu Yi 已提交
3625
 */
C
Christoph Hellwig 已提交
3626
int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3627 3628 3629 3630 3631 3632 3633 3634 3635 3636
{
	u32 reg = 0;
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&q->lock, flags);

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

3637
	/* If power-saving is in use, make sure device is awake */
Z
Zhu Yi 已提交
3638
	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
C
Christoph Hellwig 已提交
3639
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3640 3641

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
C
Christoph Hellwig 已提交
3642
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3643 3644 3645 3646
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			goto exit_unlock;
		}

C
Christoph Hellwig 已提交
3647
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3648 3649 3650
		if (rc)
			goto exit_unlock;

3651
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3652
		iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
Z
Zhu Yi 已提交
3653
				     q->write & ~0x7);
C
Christoph Hellwig 已提交
3654
		iwl3945_release_nic_access(priv);
3655 3656

	/* Else device is assumed to be awake */
Z
Zhu Yi 已提交
3657
	} else
3658
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3659
		iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
Z
Zhu Yi 已提交
3660 3661 3662 3663 3664 3665 3666 3667 3668 3669


	q->need_update = 0;

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

/**
3670
 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Z
Zhu Yi 已提交
3671
 */
C
Christoph Hellwig 已提交
3672
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3673 3674 3675 3676 3677 3678
					  dma_addr_t dma_addr)
{
	return cpu_to_le32((u32)dma_addr);
}

/**
C
Christoph Hellwig 已提交
3679
 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Z
Zhu Yi 已提交
3680
 *
3681
 * If there are slots in the RX queue that need to be restocked,
Z
Zhu Yi 已提交
3682
 * and we have free pre-allocated buffers, fill the ranks as much
3683
 * as we can, pulling from rx_free.
Z
Zhu Yi 已提交
3684 3685 3686 3687 3688
 *
 * 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
3689
static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3690
{
C
Christoph Hellwig 已提交
3691
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3692
	struct list_head *element;
C
Christoph Hellwig 已提交
3693
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3694 3695 3696 3697 3698
	unsigned long flags;
	int write, rc;

	spin_lock_irqsave(&rxq->lock, flags);
	write = rxq->write & ~0x7;
C
Christoph Hellwig 已提交
3699
	while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3700
		/* Get next free Rx buffer, remove from free list */
Z
Zhu Yi 已提交
3701
		element = rxq->rx_free.next;
C
Christoph Hellwig 已提交
3702
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
Z
Zhu Yi 已提交
3703
		list_del(element);
3704 3705

		/* Point to Rx buffer via next RBD in circular buffer */
C
Christoph Hellwig 已提交
3706
		rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
Z
Zhu Yi 已提交
3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717
		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);


3718 3719
	/* 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
3720 3721 3722 3723 3724
	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
3725
		rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
Z
Zhu Yi 已提交
3726 3727 3728 3729 3730 3731 3732 3733
		if (rc)
			return rc;
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
3734
 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Z
Zhu Yi 已提交
3735 3736 3737
 *
 * When moving to rx_free an SKB is allocated for the slot.
 *
C
Christoph Hellwig 已提交
3738
 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3739
 * This is called as a scheduled work item (except for during initialization)
Z
Zhu Yi 已提交
3740
 */
3741
static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3742
{
C
Christoph Hellwig 已提交
3743
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3744
	struct list_head *element;
C
Christoph Hellwig 已提交
3745
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3746 3747 3748 3749
	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
3750
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3751 3752

		/* Alloc a new receive buffer */
Z
Zhu Yi 已提交
3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763
		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
3764 3765 3766 3767 3768 3769 3770 3771 3772

		/* 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
3773 3774
		priv->alloc_rxb_skb++;
		list_del(element);
3775 3776

		/* Get physical address of RB/SKB */
Z
Zhu Yi 已提交
3777 3778 3779 3780 3781 3782 3783
		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);
3784 3785 3786 3787 3788
}

/*
 * this should be called while priv->lock is locked
 */
3789
static void __iwl3945_rx_replenish(void *data)
3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803
{
	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
3804 3805

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
3806
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3807 3808 3809 3810
	spin_unlock_irqrestore(&priv->lock, flags);
}

/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3811
 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
Z
Zhu Yi 已提交
3812 3813 3814
 * 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
3815
static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831
{
	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
3832
int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3833
{
C
Christoph Hellwig 已提交
3834
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3835 3836 3837 3838 3839 3840
	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);
3841 3842

	/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
Z
Zhu Yi 已提交
3843 3844 3845
	rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
	if (!rxq->bd)
		return -ENOMEM;
3846

Z
Zhu Yi 已提交
3847 3848 3849
	/* 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);
3850

Z
Zhu Yi 已提交
3851 3852 3853 3854 3855 3856 3857 3858
	/* 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
3859
void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905
{
	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
3906
int iwl3945_calc_db_from_ratio(int sig_ratio)
Z
Zhu Yi 已提交
3907
{
3908 3909
	/* 1000:1 or higher just report as 60 dB */
	if (sig_ratio >= 1000)
Z
Zhu Yi 已提交
3910 3911
		return 60;

3912
	/* 100:1 or higher, divide by 10 and use table,
Z
Zhu Yi 已提交
3913
	 *   add 20 dB to make up for divide by 10 */
3914
	if (sig_ratio >= 100)
Z
Zhu Yi 已提交
3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931
		return (20 + (int)ratio2dB[sig_ratio/10]);

	/* 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
3932
int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Z
Zhu Yi 已提交
3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966
{
	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;
}

/**
3967
 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Z
Zhu Yi 已提交
3968 3969 3970 3971 3972
 *
 * 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
3973
static void iwl3945_rx_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3974
{
C
Christoph Hellwig 已提交
3975 3976 3977
	struct iwl3945_rx_mem_buffer *rxb;
	struct iwl3945_rx_packet *pkt;
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3978 3979 3980
	u32 r, i;
	int reclaim;
	unsigned long flags;
3981
	u8 fill_rx = 0;
M
Mohamed Abbas 已提交
3982
	u32 count = 8;
Z
Zhu Yi 已提交
3983

3984 3985
	/* 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
3986
	r = iwl3945_hw_get_rx_read(priv);
Z
Zhu Yi 已提交
3987 3988
	i = rxq->read;

3989 3990
	if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
		fill_rx = 1;
Z
Zhu Yi 已提交
3991 3992 3993 3994 3995 3996 3997
	/* 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];

3998
		/* If an RXB doesn't have a Rx queue slot associated with it,
Z
Zhu Yi 已提交
3999 4000 4001 4002 4003 4004 4005 4006 4007
		 * 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
4008
		pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021

		/* 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
4022
		 *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
Z
Zhu Yi 已提交
4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036
		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) {
4037 4038
			/* Invoke any callbacks, transfer the skb to caller, and
			 * fire off the (possibly) blocking iwl3945_send_cmd()
Z
Zhu Yi 已提交
4039 4040
			 * as we reclaim the driver command queue */
			if (rxb && rxb->skb)
C
Christoph Hellwig 已提交
4041
				iwl3945_tx_cmd_complete(priv, rxb);
Z
Zhu Yi 已提交
4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060
			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;
4061 4062 4063 4064 4065 4066 4067 4068 4069 4070
		/* 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
4071 4072 4073 4074
	}

	/* Backtrack one entry */
	priv->rxq.read = i;
C
Christoph Hellwig 已提交
4075
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
4076 4077
}

4078 4079 4080
/**
 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
 */
C
Christoph Hellwig 已提交
4081 4082
static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
				  struct iwl3945_tx_queue *txq)
Z
Zhu Yi 已提交
4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095
{
	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
4096
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
4097 4098 4099

		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
4100
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
4101 4102 4103 4104 4105
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			return rc;
		}

		/* restore this queue's parameters in nic hardware. */
C
Christoph Hellwig 已提交
4106
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4107 4108
		if (rc)
			return rc;
C
Christoph Hellwig 已提交
4109
		iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4110
				     txq->q.write_ptr | (txq_id << 8));
C
Christoph Hellwig 已提交
4111
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4112 4113 4114 4115

	/* 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
4116
		iwl3945_write32(priv, HBUS_TARG_WRPTR,
4117
			    txq->q.write_ptr | (txq_id << 8));
Z
Zhu Yi 已提交
4118 4119 4120 4121 4122 4123

	txq->need_update = 0;

	return rc;
}

4124
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4125
static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
4126
{
4127 4128
	DECLARE_MAC_BUF(mac);

Z
Zhu Yi 已提交
4129
	IWL_DEBUG_RADIO("RX CONFIG:\n");
C
Christoph Hellwig 已提交
4130
	iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Z
Zhu Yi 已提交
4131 4132 4133 4134 4135 4136 4137 4138
	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);
4139 4140 4141 4142
	IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
			print_mac(mac, rxon->node_addr));
	IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
			print_mac(mac, rxon->bssid_addr));
Z
Zhu Yi 已提交
4143 4144 4145 4146
	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

C
Christoph Hellwig 已提交
4147
static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4148 4149 4150
{
	IWL_DEBUG_ISR("Enabling interrupts\n");
	set_bit(STATUS_INT_ENABLED, &priv->status);
C
Christoph Hellwig 已提交
4151
	iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Z
Zhu Yi 已提交
4152 4153
}

4154 4155 4156 4157 4158 4159 4160 4161 4162 4163

/* call this function to flush any scheduled tasklet */
static inline void iwl_synchronize_irq(struct iwl3945_priv *priv)
{
	/* wait to make sure we flush pedding tasklet*/
	synchronize_irq(priv->pci_dev->irq);
	tasklet_kill(&priv->irq_tasklet);
}


C
Christoph Hellwig 已提交
4164
static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4165 4166 4167 4168
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
C
Christoph Hellwig 已提交
4169
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4170 4171 4172

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
C
Christoph Hellwig 已提交
4173 4174
	iwl3945_write32(priv, CSR_INT, 0xffffffff);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Z
Zhu Yi 已提交
4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200
	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
4201
static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4202 4203 4204 4205 4206 4207 4208 4209
{
	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
4210
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4211 4212 4213 4214
		IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4215
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4216 4217 4218 4219 4220
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

C
Christoph Hellwig 已提交
4221
	count = iwl3945_read_targ_mem(priv, base);
Z
Zhu Yi 已提交
4222 4223 4224

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
		IWL_ERROR("Start IWL Error Log Dump:\n");
4225
		IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
Z
Zhu Yi 已提交
4226 4227 4228 4229 4230 4231 4232
	}

	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
4233
		desc = iwl3945_read_targ_mem(priv, base + i);
Z
Zhu Yi 已提交
4234
		time =
C
Christoph Hellwig 已提交
4235
		    iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Z
Zhu Yi 已提交
4236
		blink1 =
C
Christoph Hellwig 已提交
4237
		    iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Z
Zhu Yi 已提交
4238
		blink2 =
C
Christoph Hellwig 已提交
4239
		    iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Z
Zhu Yi 已提交
4240
		ilink1 =
C
Christoph Hellwig 已提交
4241
		    iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Z
Zhu Yi 已提交
4242
		ilink2 =
C
Christoph Hellwig 已提交
4243
		    iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Z
Zhu Yi 已提交
4244
		data1 =
C
Christoph Hellwig 已提交
4245
		    iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Z
Zhu Yi 已提交
4246 4247 4248 4249 4250 4251 4252

		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
4253
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4254 4255 4256

}

4257
#define EVENT_START_OFFSET  (6 * sizeof(u32))
Z
Zhu Yi 已提交
4258 4259

/**
C
Christoph Hellwig 已提交
4260
 * iwl3945_print_event_log - Dump error event log to syslog
Z
Zhu Yi 已提交
4261
 *
C
Christoph Hellwig 已提交
4262
 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
Z
Zhu Yi 已提交
4263
 */
C
Christoph Hellwig 已提交
4264
static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
Z
Zhu Yi 已提交
4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287
				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
4288
		ev = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4289
		ptr += sizeof(u32);
C
Christoph Hellwig 已提交
4290
		time = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4291 4292 4293 4294
		ptr += sizeof(u32);
		if (mode == 0)
			IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
		else {
C
Christoph Hellwig 已提交
4295
			data = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4296 4297 4298 4299 4300 4301
			ptr += sizeof(u32);
			IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
		}
	}
}

C
Christoph Hellwig 已提交
4302
static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4303 4304 4305 4306 4307 4308 4309 4310 4311 4312
{
	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
4313
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4314 4315 4316 4317
		IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4318
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4319 4320 4321 4322 4323 4324
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

	/* event log header */
C
Christoph Hellwig 已提交
4325 4326 4327 4328
	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
4329 4330 4331 4332 4333

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
4334
		IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
C
Christoph Hellwig 已提交
4335
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4336 4337 4338
		return;
	}

4339
	IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
Z
Zhu Yi 已提交
4340 4341 4342 4343 4344
		  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
4345
		iwl3945_print_event_log(priv, next_entry,
Z
Zhu Yi 已提交
4346 4347 4348
				    capacity - next_entry, mode);

	/* (then/else) start at top of log */
C
Christoph Hellwig 已提交
4349
	iwl3945_print_event_log(priv, 0, next_entry, mode);
Z
Zhu Yi 已提交
4350

C
Christoph Hellwig 已提交
4351
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4352 4353 4354
}

/**
C
Christoph Hellwig 已提交
4355
 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Z
Zhu Yi 已提交
4356
 */
C
Christoph Hellwig 已提交
4357
static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4358
{
C
Christoph Hellwig 已提交
4359
	/* Set the FW error flag -- cleared on iwl3945_down */
Z
Zhu Yi 已提交
4360 4361 4362 4363 4364
	set_bit(STATUS_FW_ERROR, &priv->status);

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

4365
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4366 4367 4368 4369
	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
4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382
	}
#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
4383
		if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4384 4385 4386 4387 4388 4389 4390 4391
			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
4392
static void iwl3945_error_recovery(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4393 4394 4395 4396 4397 4398
{
	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
4399
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
4400

C
Christoph Hellwig 已提交
4401
	iwl3945_add_station(priv, priv->bssid, 1, 0);
Z
Zhu Yi 已提交
4402 4403 4404 4405 4406 4407 4408

	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
4409
static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4410 4411 4412 4413
{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
4414
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
4415 4416 4417 4418 4419 4420 4421 4422
	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
4423 4424
	inta = iwl3945_read32(priv, CSR_INT);
	iwl3945_write32(priv, CSR_INT, inta);
Z
Zhu Yi 已提交
4425 4426 4427 4428

	/* 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
4429 4430
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Z
Zhu Yi 已提交
4431

4432
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4433
	if (iwl3945_debug_level & IWL_DL_ISR) {
4434 4435
		/* just for debug */
		inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
Z
Zhu Yi 已提交
4436 4437 4438 4439 4440 4441 4442 4443 4444
		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
4445
	if (inta_fh & CSR39_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
4446
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
4447
	if (inta_fh & CSR39_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
4448 4449 4450 4451 4452 4453 4454
		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
4455
		iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
4456

C
Christoph Hellwig 已提交
4457
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4458 4459 4460 4461 4462 4463 4464 4465

		handled |= CSR_INT_BIT_HW_ERR;

		spin_unlock_irqrestore(&priv->lock, flags);

		return;
	}

4466
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4467
	if (iwl3945_debug_level & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
4468
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
4469 4470 4471
		if (inta & CSR_INT_BIT_SCD)
			IWL_DEBUG_ISR("Scheduler finished to transmit "
				      "the frame/frames.\n");
Z
Zhu Yi 已提交
4472 4473 4474 4475 4476 4477 4478

		/* 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 */
4479
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
4480 4481 4482 4483

	/* HW RF KILL switch toggled (4965 only) */
	if (inta & CSR_INT_BIT_RF_KILL) {
		int hw_rf_kill = 0;
C
Christoph Hellwig 已提交
4484
		if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
Z
Zhu Yi 已提交
4485 4486 4487 4488 4489 4490 4491 4492 4493 4494
				CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
			hw_rf_kill = 1;

		IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
				"RF_KILL bit toggled to %s.\n",
				hw_rf_kill ? "disable radio":"enable radio");

		/* Queue restart only if RF_KILL switch was set to "kill"
		 *   when we loaded driver, and is now set to "enable".
		 * After we're Alive, RF_KILL gets handled by
4495
		 *   iwl3945_rx_card_state_notif() */
4496 4497
		if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
			clear_bit(STATUS_RF_KILL_HW, &priv->status);
Z
Zhu Yi 已提交
4498
			queue_work(priv->workqueue, &priv->restart);
4499
		}
Z
Zhu Yi 已提交
4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513

		handled |= CSR_INT_BIT_RF_KILL;
	}

	/* Chip got too hot and stopped itself (4965 only) */
	if (inta & CSR_INT_BIT_CT_KILL) {
		IWL_ERROR("Microcode CT kill error detected.\n");
		handled |= CSR_INT_BIT_CT_KILL;
	}

	/* 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
4514
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4515 4516 4517 4518 4519 4520
		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
4521 4522 4523 4524 4525 4526 4527
		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
4528 4529 4530 4531 4532 4533 4534 4535

		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
4536
		iwl3945_rx_handle(priv);
Z
Zhu Yi 已提交
4537 4538 4539 4540 4541 4542
		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
4543 4544 4545
		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
4546 4547
					     FH_TCSR_CREDIT
					     (ALM_FH_SRVC_CHNL), 0x0);
C
Christoph Hellwig 已提交
4548
			iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562
		}
		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 */
4563 4564 4565
	/* 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
4566

4567
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4568 4569 4570 4571
	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
4572 4573 4574 4575 4576 4577 4578
		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
4579
static irqreturn_t iwl3945_isr(int irq, void *data)
Z
Zhu Yi 已提交
4580
{
C
Christoph Hellwig 已提交
4581
	struct iwl3945_priv *priv = data;
Z
Zhu Yi 已提交
4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592
	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
4593 4594
	inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4595 4596

	/* Discover which interrupts are active/pending */
C
Christoph Hellwig 已提交
4597 4598
	inta = iwl3945_read32(priv, CSR_INT);
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610

	/* 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 */
		IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4611
		goto unplugged;
Z
Zhu Yi 已提交
4612 4613 4614 4615 4616
	}

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

4617 4618
	inta &= ~CSR_INT_BIT_SCD;

C
Christoph Hellwig 已提交
4619
	/* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4620 4621
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);
4622
unplugged:
Z
Zhu Yi 已提交
4623 4624 4625 4626 4627 4628
	spin_unlock(&priv->lock);

	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
4629 4630 4631
	/* 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
4632 4633 4634 4635 4636 4637
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

/************************** EEPROM BANDS ****************************
 *
C
Christoph Hellwig 已提交
4638
 * The iwl3945_eeprom_band definitions below provide the mapping from the
Z
Zhu Yi 已提交
4639 4640 4641
 * EEPROM contents to the specific channel number supported for each
 * band.
 *
C
Christoph Hellwig 已提交
4642
 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
Z
Zhu Yi 已提交
4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667
 * 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
4668
static const u8 iwl3945_eeprom_band_1[14] = {
Z
Zhu Yi 已提交
4669 4670 4671 4672
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

/* 5.2 GHz bands */
4673
static const u8 iwl3945_eeprom_band_2[] = {	/* 4915-5080MHz */
Z
Zhu Yi 已提交
4674 4675 4676
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

4677
static const u8 iwl3945_eeprom_band_3[] = {	/* 5170-5320MHz */
Z
Zhu Yi 已提交
4678 4679 4680
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

C
Christoph Hellwig 已提交
4681
static const u8 iwl3945_eeprom_band_4[] = {	/* 5500-5700MHz */
Z
Zhu Yi 已提交
4682 4683 4684
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

C
Christoph Hellwig 已提交
4685
static const u8 iwl3945_eeprom_band_5[] = {	/* 5725-5825MHz */
Z
Zhu Yi 已提交
4686 4687 4688
	145, 149, 153, 157, 161, 165
};

C
Christoph Hellwig 已提交
4689
static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
Z
Zhu Yi 已提交
4690
				    int *eeprom_ch_count,
C
Christoph Hellwig 已提交
4691
				    const struct iwl3945_eeprom_channel
Z
Zhu Yi 已提交
4692 4693 4694 4695 4696
				    **eeprom_ch_info,
				    const u8 **eeprom_ch_index)
{
	switch (band) {
	case 1:		/* 2.4GHz band */
C
Christoph Hellwig 已提交
4697
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
Z
Zhu Yi 已提交
4698
		*eeprom_ch_info = priv->eeprom.band_1_channels;
C
Christoph Hellwig 已提交
4699
		*eeprom_ch_index = iwl3945_eeprom_band_1;
Z
Zhu Yi 已提交
4700
		break;
4701
	case 2:		/* 4.9GHz band */
C
Christoph Hellwig 已提交
4702
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
Z
Zhu Yi 已提交
4703
		*eeprom_ch_info = priv->eeprom.band_2_channels;
C
Christoph Hellwig 已提交
4704
		*eeprom_ch_index = iwl3945_eeprom_band_2;
Z
Zhu Yi 已提交
4705 4706
		break;
	case 3:		/* 5.2GHz band */
C
Christoph Hellwig 已提交
4707
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
Z
Zhu Yi 已提交
4708
		*eeprom_ch_info = priv->eeprom.band_3_channels;
C
Christoph Hellwig 已提交
4709
		*eeprom_ch_index = iwl3945_eeprom_band_3;
Z
Zhu Yi 已提交
4710
		break;
4711
	case 4:		/* 5.5GHz band */
C
Christoph Hellwig 已提交
4712
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
Z
Zhu Yi 已提交
4713
		*eeprom_ch_info = priv->eeprom.band_4_channels;
C
Christoph Hellwig 已提交
4714
		*eeprom_ch_index = iwl3945_eeprom_band_4;
Z
Zhu Yi 已提交
4715
		break;
4716
	case 5:		/* 5.7GHz band */
C
Christoph Hellwig 已提交
4717
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
Z
Zhu Yi 已提交
4718
		*eeprom_ch_info = priv->eeprom.band_5_channels;
C
Christoph Hellwig 已提交
4719
		*eeprom_ch_index = iwl3945_eeprom_band_5;
Z
Zhu Yi 已提交
4720 4721 4722 4723 4724 4725 4726
		break;
	default:
		BUG();
		return;
	}
}

4727 4728 4729 4730 4731
/**
 * iwl3945_get_channel_info - Find driver's private channel info
 *
 * Based on band and channel number.
 */
C
Christoph Hellwig 已提交
4732
const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4733
						    enum ieee80211_band band, u16 channel)
Z
Zhu Yi 已提交
4734 4735 4736
{
	int i;

4737 4738
	switch (band) {
	case IEEE80211_BAND_5GHZ:
Z
Zhu Yi 已提交
4739 4740 4741 4742 4743 4744
		for (i = 14; i < priv->channel_count; i++) {
			if (priv->channel_info[i].channel == channel)
				return &priv->channel_info[i];
		}
		break;

4745
	case IEEE80211_BAND_2GHZ:
Z
Zhu Yi 已提交
4746 4747 4748
		if (channel >= 1 && channel <= 14)
			return &priv->channel_info[channel - 1];
		break;
4749 4750
	case IEEE80211_NUM_BANDS:
		WARN_ON(1);
Z
Zhu Yi 已提交
4751 4752 4753 4754 4755 4756 4757 4758
	}

	return NULL;
}

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

4759 4760 4761
/**
 * iwl3945_init_channel_map - Set up driver's info for all possible channels
 */
C
Christoph Hellwig 已提交
4762
static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4763 4764 4765
{
	int eeprom_ch_count = 0;
	const u8 *eeprom_ch_index = NULL;
C
Christoph Hellwig 已提交
4766
	const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
Z
Zhu Yi 已提交
4767
	int band, ch;
C
Christoph Hellwig 已提交
4768
	struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783

	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
4784 4785 4786 4787 4788
	    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
4789 4790 4791

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

C
Christoph Hellwig 已提交
4792
	priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
Z
Zhu Yi 已提交
4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806
				     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
4807
		iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Z
Zhu Yi 已提交
4808 4809 4810 4811 4812
					&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];
4813 4814
			ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
			    IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840

			/* 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;

4841
			IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
Z
Zhu Yi 已提交
4842 4843 4844 4845
				       " %ddBm): Ad-Hoc %ssupported\n",
				       ch_info->channel,
				       is_channel_a_band(ch_info) ?
				       "5.2" : "2.4",
4846
				       CHECK_AND_PRINT(VALID),
Z
Zhu Yi 已提交
4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870
				       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++;
		}
	}

4871
	/* Set up txpower settings in driver for all channels */
Z
Zhu Yi 已提交
4872 4873 4874 4875 4876 4877
	if (iwl3945_txpower_set_from_eeprom(priv))
		return -EIO;

	return 0;
}

4878 4879 4880 4881 4882 4883 4884 4885 4886
/*
 * 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
4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909
/* 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.  */
#define IWL_ACTIVE_DWELL_TIME_24    (20)	/* all times in msec */
#define IWL_ACTIVE_DWELL_TIME_52    (10)

/* 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 */
#define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)	/* msec */

/* 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

4910 4911
static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
						enum ieee80211_band band)
Z
Zhu Yi 已提交
4912
{
4913
	if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4914 4915 4916 4917 4918
		return IWL_ACTIVE_DWELL_TIME_52;
	else
		return IWL_ACTIVE_DWELL_TIME_24;
}

4919 4920
static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
4921
{
4922 4923
	u16 active = iwl3945_get_active_dwell_time(priv, band);
	u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Z
Zhu Yi 已提交
4924 4925 4926
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;

C
Christoph Hellwig 已提交
4927
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942
		/* 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;
	}

	if (passive <= active)
		passive = active + 1;

	return passive;
}

4943 4944
static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
					 enum ieee80211_band band,
Z
Zhu Yi 已提交
4945
				     u8 is_active, u8 direct_mask,
C
Christoph Hellwig 已提交
4946
				     struct iwl3945_scan_channel *scan_ch)
Z
Zhu Yi 已提交
4947 4948
{
	const struct ieee80211_channel *channels = NULL;
4949
	const struct ieee80211_supported_band *sband;
C
Christoph Hellwig 已提交
4950
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4951 4952 4953 4954
	u16 passive_dwell = 0;
	u16 active_dwell = 0;
	int added, i;

4955 4956
	sband = iwl3945_get_band(priv, band);
	if (!sband)
Z
Zhu Yi 已提交
4957 4958
		return 0;

4959
	channels = sband->channels;
Z
Zhu Yi 已提交
4960

4961 4962
	active_dwell = iwl3945_get_active_dwell_time(priv, band);
	passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Z
Zhu Yi 已提交
4963

4964
	for (i = 0, added = 0; i < sband->n_channels; i++) {
4965 4966 4967
		if (channels[i].flags & IEEE80211_CHAN_DISABLED)
			continue;

4968
		scan_ch->channel = channels[i].hw_value;
Z
Zhu Yi 已提交
4969

4970
		ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Z
Zhu Yi 已提交
4971
		if (!is_channel_valid(ch_info)) {
4972
			IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
Z
Zhu Yi 已提交
4973 4974 4975 4976 4977
				       scan_ch->channel);
			continue;
		}

		if (!is_active || is_channel_passive(ch_info) ||
4978
		    (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
Z
Zhu Yi 已提交
4979 4980 4981 4982 4983 4984 4985 4986 4987 4988
			scan_ch->type = 0;	/* passive */
		else
			scan_ch->type = 1;	/* active */

		if (scan_ch->type & 1)
			scan_ch->type |= (direct_mask << 1);

		scan_ch->active_dwell = cpu_to_le16(active_dwell);
		scan_ch->passive_dwell = cpu_to_le16(passive_dwell);

4989
		/* Set txpower levels to defaults */
Z
Zhu Yi 已提交
4990 4991 4992 4993
		scan_ch->tpc.dsp_atten = 110;
		/* scan_pwr_info->tpc.dsp_atten; */

		/*scan_pwr_info->tpc.tx_gain; */
4994
		if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4995 4996 4997 4998
			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
4999
			 * power level:
5000
			 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Z
Zhu Yi 已提交
5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017
			 */
		}

		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
5018
static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
5019 5020 5021 5022 5023
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
5024 5025 5026 5027 5028
		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
5029
			/*
5030
			 * If CCK != 1M then set short preamble rate flag.
Z
Zhu Yi 已提交
5031
			 */
C
Christoph Hellwig 已提交
5032
			rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5033
				0 : IEEE80211_RATE_SHORT_PREAMBLE;
Z
Zhu Yi 已提交
5034 5035 5036 5037 5038
		}
	}
}

/**
C
Christoph Hellwig 已提交
5039
 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Z
Zhu Yi 已提交
5040
 */
C
Christoph Hellwig 已提交
5041
static int iwl3945_init_geos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5042
{
C
Christoph Hellwig 已提交
5043
	struct iwl3945_channel_info *ch;
5044
	struct ieee80211_supported_band *sband;
Z
Zhu Yi 已提交
5045 5046 5047 5048 5049
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

5050 5051
	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Z
Zhu Yi 已提交
5052 5053 5054 5055 5056 5057 5058
		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);
5059
	if (!channels)
Z
Zhu Yi 已提交
5060 5061
		return -ENOMEM;

5062
	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Z
Zhu Yi 已提交
5063 5064 5065 5066 5067 5068 5069
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080
	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
5081 5082 5083 5084

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

C
Christoph Hellwig 已提交
5085
	iwl3945_init_hw_rates(priv, rates);
Z
Zhu Yi 已提交
5086

5087
	for (i = 0;  i < priv->channel_count; i++) {
Z
Zhu Yi 已提交
5088 5089
		ch = &priv->channel_info[i];

5090 5091
		/* FIXME: might be removed if scan is OK*/
		if (!is_channel_valid(ch))
Z
Zhu Yi 已提交
5092 5093 5094
			continue;

		if (is_channel_a_band(ch))
5095
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5096
		else
5097
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];
Z
Zhu Yi 已提交
5098

5099 5100 5101
		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5102 5103
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
5104
		geo_ch->hw_value = ch->channel;
Z
Zhu Yi 已提交
5105 5106

		if (is_channel_valid(ch)) {
5107 5108
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Z
Zhu Yi 已提交
5109

5110 5111
			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Z
Zhu Yi 已提交
5112 5113

			if (ch->flags & EEPROM_CHANNEL_RADAR)
5114
				geo_ch->flags |= IEEE80211_CHAN_RADAR;
Z
Zhu Yi 已提交
5115 5116 5117 5118

			if (ch->max_power_avg > priv->max_channel_txpower_limit)
				priv->max_channel_txpower_limit =
				    ch->max_power_avg;
5119
		} else {
5120
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131
		}

		/* 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
5132 5133
	}

T
Tomas Winkler 已提交
5134 5135
	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
Z
Zhu Yi 已提交
5136 5137 5138 5139
		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
5140
		 priv->cfg->sku &= ~IWL_SKU_A;
Z
Zhu Yi 已提交
5141 5142 5143 5144
	}

	printk(KERN_INFO DRV_NAME
	       ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5145 5146
	       priv->bands[IEEE80211_BAND_2GHZ].n_channels,
	       priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Z
Zhu Yi 已提交
5147

5148 5149 5150 5151 5152 5153
	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
5154 5155 5156 5157 5158 5159

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}

5160 5161 5162 5163 5164 5165 5166 5167 5168 5169
/*
 * 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
5170 5171 5172 5173 5174 5175
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

C
Christoph Hellwig 已提交
5176
static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5177
{
5178 5179 5180 5181 5182 5183
	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
5184 5185 5186
}

/**
C
Christoph Hellwig 已提交
5187
 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5188 5189
 *     looking at all data.
 */
C
Christoph Hellwig 已提交
5190
static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
Z
Zhu Yi 已提交
5191 5192 5193 5194 5195 5196 5197 5198
{
	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
5199
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5200 5201 5202
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5203
	iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
Z
Zhu Yi 已提交
5204 5205 5206 5207 5208 5209

	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
5210
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221
		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
5222
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5223 5224

	if (!errcnt)
5225
		IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Z
Zhu Yi 已提交
5226 5227 5228 5229 5230 5231

	return rc;
}


/**
C
Christoph Hellwig 已提交
5232
 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5233 5234 5235
 *   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
5236
static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5237 5238 5239 5240 5241 5242 5243 5244
{
	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
5245
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5246 5247 5248 5249 5250 5251 5252
	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
5253
		iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Z
Zhu Yi 已提交
5254
			i + RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5255
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268
		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
5269
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5270 5271 5272 5273 5274 5275

	return rc;
}


/**
C
Christoph Hellwig 已提交
5276
 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Z
Zhu Yi 已提交
5277 5278
 *    and verify its contents
 */
C
Christoph Hellwig 已提交
5279
static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5280 5281 5282 5283 5284 5285 5286 5287
{
	__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
5288
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5289 5290 5291 5292 5293 5294 5295 5296
	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
5297
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5298 5299 5300 5301 5302 5303 5304 5305
	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
5306
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5307 5308 5309 5310 5311 5312 5313
	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");

5314 5315 5316
	/* 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
5317 5318
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
5319
	rc = iwl3945_verify_inst_full(priv, image, len);
Z
Zhu Yi 已提交
5320 5321 5322 5323 5324 5325

	return rc;
}


/* check contents of special bootstrap uCode SRAM */
C
Christoph Hellwig 已提交
5326
static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5327 5328 5329 5330 5331 5332 5333 5334 5335
{
	__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
5336
	val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
Z
Zhu Yi 已提交
5337 5338 5339
	for (reg = BSM_SRAM_LOWER_BOUND;
	     reg < BSM_SRAM_LOWER_BOUND + len;
	     reg += sizeof(u32), image ++) {
C
Christoph Hellwig 已提交
5340
		val = iwl3945_read_prph(priv, reg);
Z
Zhu Yi 已提交
5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356
		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
5357
 * iwl3945_load_bsm - Load bootstrap instructions
Z
Zhu Yi 已提交
5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387
 *
 * 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
5388
static int iwl3945_load_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407
{
	__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
5408
	 *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
C
Christoph Hellwig 已提交
5409
	 * NOTE:  iwl3945_initialize_alive_start() will replace these values,
Z
Zhu Yi 已提交
5410 5411 5412 5413 5414 5415 5416
	 *        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
5417
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5418 5419 5420
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5421 5422 5423 5424
	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
5425 5426 5427 5428 5429

	/* 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
5430
		_iwl3945_write_prph(priv, reg_offset,
Z
Zhu Yi 已提交
5431 5432
					  le32_to_cpu(*image));

C
Christoph Hellwig 已提交
5433
	rc = iwl3945_verify_bsm(priv);
Z
Zhu Yi 已提交
5434
	if (rc) {
C
Christoph Hellwig 已提交
5435
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5436 5437 5438 5439
		return rc;
	}

	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
C
Christoph Hellwig 已提交
5440 5441
	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
5442
				 RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5443
	iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Z
Zhu Yi 已提交
5444 5445 5446

	/* Load bootstrap code into instruction SRAM now,
	 *   to prepare to load "initialize" uCode */
C
Christoph Hellwig 已提交
5447
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5448 5449 5450 5451
		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
5452
		done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
Z
Zhu Yi 已提交
5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465
		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
5466
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5467 5468
		BSM_WR_CTRL_REG_BIT_START_EN);

C
Christoph Hellwig 已提交
5469
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5470 5471 5472 5473

	return 0;
}

C
Christoph Hellwig 已提交
5474
static void iwl3945_nic_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5475 5476
{
	/* Remove all resets to allow NIC to operate */
C
Christoph Hellwig 已提交
5477
	iwl3945_write32(priv, CSR_RESET, 0);
Z
Zhu Yi 已提交
5478 5479 5480
}

/**
C
Christoph Hellwig 已提交
5481
 * iwl3945_read_ucode - Read uCode images from disk file.
Z
Zhu Yi 已提交
5482 5483 5484
 *
 * Copy into buffers for card to fetch via bus-mastering
 */
C
Christoph Hellwig 已提交
5485
static int iwl3945_read_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5486
{
C
Christoph Hellwig 已提交
5487
	struct iwl3945_ucode *ucode;
5488
	int ret = 0;
Z
Zhu Yi 已提交
5489 5490
	const struct firmware *ucode_raw;
	/* firmware file name contains uCode/driver compatibility version */
5491
	const char *name = priv->cfg->fw_name;
Z
Zhu Yi 已提交
5492 5493 5494 5495 5496 5497
	u8 *src;
	size_t len;
	u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;

	/* Ask kernel firmware_class module to get the boot firmware off disk.
	 * request_firmware() is synchronous, file is in memory on return. */
5498 5499 5500 5501
	ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
	if (ret < 0) {
		IWL_ERROR("%s firmware file req failed: Reason %d\n",
				name, ret);
Z
Zhu Yi 已提交
5502 5503 5504 5505 5506 5507 5508 5509 5510
		goto error;
	}

	IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
		       name, ucode_raw->size);

	/* Make sure that we got at least our header! */
	if (ucode_raw->size < sizeof(*ucode)) {
		IWL_ERROR("File size way too small!\n");
5511
		ret = -EINVAL;
Z
Zhu Yi 已提交
5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525
		goto err_release;
	}

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

	ver = le32_to_cpu(ucode->ver);
	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);

	IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5526 5527 5528 5529 5530
	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
5531 5532 5533 5534 5535 5536 5537 5538

	/* 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);
5539
		ret = -EINVAL;
Z
Zhu Yi 已提交
5540 5541 5542 5543 5544
		goto err_release;
	}

	/* Verify that uCode images will fit in card's SRAM */
	if (inst_size > IWL_MAX_INST_SIZE) {
5545 5546 5547
		IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
			       inst_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5548 5549 5550 5551
		goto err_release;
	}

	if (data_size > IWL_MAX_DATA_SIZE) {
5552 5553 5554
		IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
			       data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5555 5556 5557
		goto err_release;
	}
	if (init_size > IWL_MAX_INST_SIZE) {
5558 5559 5560
		IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
				init_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5561 5562 5563
		goto err_release;
	}
	if (init_data_size > IWL_MAX_DATA_SIZE) {
5564 5565 5566
		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
5567 5568 5569
		goto err_release;
	}
	if (boot_size > IWL_MAX_BSM_SIZE) {
5570 5571 5572
		IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
				boot_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5573 5574 5575 5576 5577 5578 5579 5580 5581
		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;
5582
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
5583 5584

	priv->ucode_data.len = data_size;
5585
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
5586 5587

	priv->ucode_data_backup.len = data_size;
5588
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
5589

5590 5591 5592
	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
5593 5594

	/* Initialization instructions and data */
5595 5596
	if (init_size && init_data_size) {
		priv->ucode_init.len = init_size;
5597
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5598 5599

		priv->ucode_init_data.len = init_data_size;
5600
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5601 5602 5603 5604

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5605 5606

	/* Bootstrap (instructions only, no data) */
5607 5608
	if (boot_size) {
		priv->ucode_boot.len = boot_size;
5609
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
5610

5611 5612 5613
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5614 5615 5616 5617 5618 5619

	/* 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;
5620
	IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Z
Zhu Yi 已提交
5621 5622 5623 5624 5625
	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
5626
	 * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
Z
Zhu Yi 已提交
5627 5628
	src = &ucode->data[inst_size];
	len = priv->ucode_data.len;
5629
	IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Z
Zhu Yi 已提交
5630 5631 5632 5633 5634 5635 5636
	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;
5637 5638
		IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
			       len);
Z
Zhu Yi 已提交
5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663
		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");
5664
	ret = -ENOMEM;
C
Christoph Hellwig 已提交
5665
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
5666 5667 5668 5669 5670

 err_release:
	release_firmware(ucode_raw);

 error:
5671
	return ret;
Z
Zhu Yi 已提交
5672 5673 5674 5675
}


/**
C
Christoph Hellwig 已提交
5676
 * iwl3945_set_ucode_ptrs - Set uCode address location
Z
Zhu Yi 已提交
5677 5678 5679 5680 5681 5682 5683
 *
 * 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
5684
static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695
{
	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
5696
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5697 5698 5699 5700 5701 5702
	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
5703 5704 5705
	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
5706 5707 5708 5709
				 priv->ucode_data.len);

	/* Inst bytecount must be last to set up, bit 31 signals uCode
	 *   that all new ptr/size info is in place */
C
Christoph Hellwig 已提交
5710
	iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5711 5712
				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);

C
Christoph Hellwig 已提交
5713
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5714 5715 5716 5717 5718 5719 5720 5721 5722

	spin_unlock_irqrestore(&priv->lock, flags);

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

	return rc;
}

/**
C
Christoph Hellwig 已提交
5723
 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5724 5725 5726 5727
 *
 * Called after REPLY_ALIVE notification received from "initialize" uCode.
 *
 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5728
 */
C
Christoph Hellwig 已提交
5729
static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741
{
	/* 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
5742
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5743 5744 5745 5746 5747 5748 5749 5750 5751 5752
		/* 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
5753
	if (iwl3945_set_ucode_ptrs(priv)) {
Z
Zhu Yi 已提交
5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766
		/* 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);
}


/**
C
Christoph Hellwig 已提交
5767
 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5768
 *                   from protocol/runtime uCode (initialization uCode's
C
Christoph Hellwig 已提交
5769
 *                   Alive gets handled by iwl3945_init_alive_start()).
Z
Zhu Yi 已提交
5770
 */
C
Christoph Hellwig 已提交
5771
static void iwl3945_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788
{
	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
5789
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5790 5791 5792 5793 5794 5795
		/* 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
5796
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5797

C
Christoph Hellwig 已提交
5798
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5799 5800 5801 5802 5803
	if (rc) {
		IWL_WARNING("Can not read rfkill status from adapter\n");
		return;
	}

C
Christoph Hellwig 已提交
5804
	rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
Z
Zhu Yi 已提交
5805
	IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
C
Christoph Hellwig 已提交
5806
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5807 5808 5809 5810 5811

	if (rfkill & 0x1) {
		clear_bit(STATUS_RF_KILL_HW, &priv->status);
		/* if rfkill is not on, then wait for thermal
		 * sensor in adapter to kick in */
C
Christoph Hellwig 已提交
5812
		while (iwl3945_hw_get_temperature(priv) == 0) {
Z
Zhu Yi 已提交
5813 5814 5815 5816 5817 5818 5819 5820 5821 5822
			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);

5823
	/* After the ALIVE response, we can send commands to 3945 uCode */
Z
Zhu Yi 已提交
5824 5825 5826 5827 5828
	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
5829
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
5830 5831
		return;

5832
	ieee80211_wake_queues(priv->hw);
Z
Zhu Yi 已提交
5833 5834 5835 5836

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

C
Christoph Hellwig 已提交
5837
	iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Z
Zhu Yi 已提交
5838

C
Christoph Hellwig 已提交
5839 5840 5841
	if (iwl3945_is_associated(priv)) {
		struct iwl3945_rxon_cmd *active_rxon =
				(struct iwl3945_rxon_cmd *)(&priv->active_rxon);
Z
Zhu Yi 已提交
5842 5843 5844 5845 5846 5847

		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 */
C
Christoph Hellwig 已提交
5848
		iwl3945_connection_init_rx_config(priv);
Z
Zhu Yi 已提交
5849 5850 5851
		memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	}

5852
	/* Configure Bluetooth device coexistence support */
C
Christoph Hellwig 已提交
5853
	iwl3945_send_bt_config(priv);
Z
Zhu Yi 已提交
5854 5855

	/* Configure the adapter for unassociated operation */
C
Christoph Hellwig 已提交
5856
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5857 5858 5859

	iwl3945_reg_txpower_periodic(priv);

5860 5861
	iwl3945_led_register(priv);

Z
Zhu Yi 已提交
5862
	IWL_DEBUG_INFO("ALIVE processing complete.\n");
5863
	set_bit(STATUS_READY, &priv->status);
5864
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
5865 5866

	if (priv->error_recovering)
C
Christoph Hellwig 已提交
5867
		iwl3945_error_recovery(priv);
Z
Zhu Yi 已提交
5868

5869
	ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
Z
Zhu Yi 已提交
5870 5871 5872 5873 5874 5875
	return;

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

C
Christoph Hellwig 已提交
5876
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
Z
Zhu Yi 已提交
5877

C
Christoph Hellwig 已提交
5878
static void __iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890
{
	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
5891
	iwl3945_led_unregister(priv);
C
Christoph Hellwig 已提交
5892
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5893 5894 5895 5896 5897 5898 5899 5900 5901 5902

	/* 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
5903
	iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
5904 5905

	/* tell the device to stop sending interrupts */
5906
	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5907
	iwl3945_disable_interrupts(priv);
5908 5909
	spin_unlock_irqrestore(&priv->lock, flags);
	iwl_synchronize_irq(priv);
Z
Zhu Yi 已提交
5910 5911 5912 5913

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

C
Christoph Hellwig 已提交
5914
	/* If we have not previously called iwl3945_init() then
Z
Zhu Yi 已提交
5915
	 * clear all bits but the RF Kill and SUSPEND bits and return */
C
Christoph Hellwig 已提交
5916
	if (!iwl3945_is_init(priv)) {
Z
Zhu Yi 已提交
5917 5918 5919 5920
		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 |
5921 5922
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933
			       test_bit(STATUS_IN_SUSPEND, &priv->status) <<
					STATUS_IN_SUSPEND;
		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 |
5934 5935
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5936 5937 5938 5939 5940 5941
			test_bit(STATUS_IN_SUSPEND, &priv->status) <<
				STATUS_IN_SUSPEND |
			test_bit(STATUS_FW_ERROR, &priv->status) <<
				STATUS_FW_ERROR;

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5942
	iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Z
Zhu Yi 已提交
5943 5944
	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
5945 5946
	iwl3945_hw_txq_ctx_stop(priv);
	iwl3945_hw_rxq_stop(priv);
Z
Zhu Yi 已提交
5947 5948

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5949 5950
	if (!iwl3945_grab_nic_access(priv)) {
		iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
Z
Zhu Yi 已提交
5951
					 APMG_CLK_VAL_DMA_CLK_RQT);
C
Christoph Hellwig 已提交
5952
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5953 5954 5955 5956 5957
	}
	spin_unlock_irqrestore(&priv->lock, flags);

	udelay(5);

C
Christoph Hellwig 已提交
5958 5959 5960
	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
5961 5962

 exit:
C
Christoph Hellwig 已提交
5963
	memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
Z
Zhu Yi 已提交
5964 5965 5966 5967 5968 5969

	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
5970
	iwl3945_clear_free_frames(priv);
Z
Zhu Yi 已提交
5971 5972
}

C
Christoph Hellwig 已提交
5973
static void iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5974 5975
{
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5976
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
5977
	mutex_unlock(&priv->mutex);
5978

C
Christoph Hellwig 已提交
5979
	iwl3945_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
5980 5981 5982 5983
}

#define MAX_HW_RESTARTS 5

C
Christoph Hellwig 已提交
5984
static int __iwl3945_up(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995
{
	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");
5996 5997 5998
		return -ENODEV;
	}

5999 6000 6001 6002 6003
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
		IWL_ERROR("ucode not available for device bringup\n");
		return -EIO;
	}

6004 6005 6006 6007 6008 6009 6010 6011 6012 6013
	/* 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
6014 6015
	}

C
Christoph Hellwig 已提交
6016
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
6017

C
Christoph Hellwig 已提交
6018
	rc = iwl3945_hw_nic_init(priv);
Z
Zhu Yi 已提交
6019 6020 6021 6022 6023 6024
	if (rc) {
		IWL_ERROR("Unable to int nic\n");
		return rc;
	}

	/* make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
6025 6026
	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
6027 6028 6029
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
C
Christoph Hellwig 已提交
6030 6031
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
6032 6033

	/* really make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
6034 6035
	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
6036 6037 6038 6039 6040

	/* 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,
6041
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
6042

6043 6044 6045 6046
	/* 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
6047 6048
	for (i = 0; i < MAX_HW_RESTARTS; i++) {

C
Christoph Hellwig 已提交
6049
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
6050 6051 6052 6053

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
C
Christoph Hellwig 已提交
6054
		rc = iwl3945_load_bsm(priv);
Z
Zhu Yi 已提交
6055 6056 6057 6058 6059 6060 6061

		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
6062
		iwl3945_nic_start(priv);
Z
Zhu Yi 已提交
6063 6064 6065 6066 6067 6068 6069

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

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
C
Christoph Hellwig 已提交
6070
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084

	/* 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
6085
static void iwl3945_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
6086
{
C
Christoph Hellwig 已提交
6087 6088
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, init_alive_start.work);
Z
Zhu Yi 已提交
6089 6090 6091 6092 6093

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6094
	iwl3945_init_alive_start(priv);
Z
Zhu Yi 已提交
6095 6096 6097
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6098
static void iwl3945_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
6099
{
C
Christoph Hellwig 已提交
6100 6101
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, alive_start.work);
Z
Zhu Yi 已提交
6102 6103 6104 6105 6106

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6107
	iwl3945_alive_start(priv);
Z
Zhu Yi 已提交
6108 6109 6110
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6111
static void iwl3945_bg_rf_kill(struct work_struct *work)
Z
Zhu Yi 已提交
6112
{
C
Christoph Hellwig 已提交
6113
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
Z
Zhu Yi 已提交
6114 6115 6116 6117 6118 6119 6120 6121

	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
6122
	if (!iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140
		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");
	}
	mutex_unlock(&priv->mutex);
}

6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158
static void iwl3945_bg_set_monitor(struct work_struct *work)
{
	struct iwl3945_priv *priv = container_of(work,
				struct iwl3945_priv, set_monitor);

	IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");

	mutex_lock(&priv->mutex);

	if (!iwl3945_is_ready(priv))
		IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
	else
		if (iwl3945_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
			IWL_ERROR("iwl3945_set_mode() failed\n");

	mutex_unlock(&priv->mutex);
}

Z
Zhu Yi 已提交
6159 6160
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)

C
Christoph Hellwig 已提交
6161
static void iwl3945_bg_scan_check(struct work_struct *data)
Z
Zhu Yi 已提交
6162
{
C
Christoph Hellwig 已提交
6163 6164
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, scan_check.work);
Z
Zhu Yi 已提交
6165 6166 6167 6168 6169 6170 6171 6172 6173 6174

	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));
6175

Z
Zhu Yi 已提交
6176
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
C
Christoph Hellwig 已提交
6177
			iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6178 6179 6180 6181
	}
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6182
static void iwl3945_bg_request_scan(struct work_struct *data)
Z
Zhu Yi 已提交
6183
{
C
Christoph Hellwig 已提交
6184 6185 6186
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, request_scan);
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
6187
		.id = REPLY_SCAN_CMD,
C
Christoph Hellwig 已提交
6188
		.len = sizeof(struct iwl3945_scan_cmd),
Z
Zhu Yi 已提交
6189 6190 6191
		.meta.flags = CMD_SIZE_HUGE,
	};
	int rc = 0;
C
Christoph Hellwig 已提交
6192
	struct iwl3945_scan_cmd *scan;
Z
Zhu Yi 已提交
6193 6194
	struct ieee80211_conf *conf = NULL;
	u8 direct_mask;
6195
	enum ieee80211_band band;
Z
Zhu Yi 已提交
6196 6197 6198 6199 6200

	conf = ieee80211_get_hw_conf(priv->hw);

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
6201
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229
		IWL_WARNING("request scan called when driver not ready.\n");
		goto done;
	}

	/* Make sure the scan wasn't cancelled before this queued work
	 * 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
6230
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245
		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
6246
		priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Z
Zhu Yi 已提交
6247 6248 6249 6250 6251 6252 6253
				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
		if (!priv->scan) {
			rc = -ENOMEM;
			goto done;
		}
	}
	scan = priv->scan;
C
Christoph Hellwig 已提交
6254
	memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Z
Zhu Yi 已提交
6255 6256 6257 6258

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

C
Christoph Hellwig 已提交
6259
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272
		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;
6273
		scan->max_out_time = cpu_to_le32(200 * 1024);
Z
Zhu Yi 已提交
6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295
		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",
C
Christoph Hellwig 已提交
6296
		     iwl3945_escape_essid(priv->direct_ssid,
Z
Zhu Yi 已提交
6297 6298 6299 6300 6301 6302
				      priv->direct_ssid_len));
		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);
		direct_mask = 1;
C
Christoph Hellwig 已提交
6303
	} else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6304 6305 6306
		IWL_DEBUG_SCAN
		  ("Kicking off one direct scan for '%s' when not associated\n",
		   iwl3945_escape_essid(priv->essid, priv->essid_len));
Z
Zhu Yi 已提交
6307 6308 6309 6310
		scan->direct_scan[0].id = WLAN_EID_SSID;
		scan->direct_scan[0].len = priv->essid_len;
		memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
		direct_mask = 1;
6311 6312
	} else {
		IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
Z
Zhu Yi 已提交
6313
		direct_mask = 0;
6314
	}
Z
Zhu Yi 已提交
6315 6316 6317 6318

	/* 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
6319
		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6320
			IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
Z
Zhu Yi 已提交
6321 6322 6323 6324 6325 6326
	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 */

6327
	if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
Z
Zhu Yi 已提交
6328 6329 6330
		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;
6331
		band = IEEE80211_BAND_2GHZ;
6332
	} else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
Z
Zhu Yi 已提交
6333 6334
		scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
		scan->good_CRC_th = IWL_GOOD_CRC_TH;
6335
		band = IEEE80211_BAND_5GHZ;
6336
	} else {
Z
Zhu Yi 已提交
6337 6338 6339 6340 6341 6342 6343 6344 6345 6346
		IWL_WARNING("Invalid scan band count\n");
		goto done;
	}

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

	if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
		scan->filter_flags = RXON_FILTER_PROMISC_MSK;

6347
	if (direct_mask)
6348 6349 6350 6351 6352
		scan->channel_count =
			iwl3945_get_channels_for_scan(
				priv, band, 1, /* active */
				direct_mask,
				(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6353
	else
6354 6355 6356 6357 6358
		scan->channel_count =
			iwl3945_get_channels_for_scan(
				priv, band, 0, /* passive */
				direct_mask,
				(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
Z
Zhu Yi 已提交
6359 6360

	cmd.len += le16_to_cpu(scan->tx_cmd.len) +
C
Christoph Hellwig 已提交
6361
	    scan->channel_count * sizeof(struct iwl3945_scan_channel);
Z
Zhu Yi 已提交
6362 6363 6364 6365
	cmd.data = scan;
	scan->len = cpu_to_le16(cmd.len);

	set_bit(STATUS_SCAN_HW, &priv->status);
C
Christoph Hellwig 已提交
6366
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
6367 6368 6369 6370 6371 6372 6373 6374 6375 6376
	if (rc)
		goto done;

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

	mutex_unlock(&priv->mutex);
	return;

 done:
6377
	/* inform mac80211 scan aborted */
Z
Zhu Yi 已提交
6378 6379 6380 6381
	queue_work(priv->workqueue, &priv->scan_completed);
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6382
static void iwl3945_bg_up(struct work_struct *data)
Z
Zhu Yi 已提交
6383
{
C
Christoph Hellwig 已提交
6384
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
Z
Zhu Yi 已提交
6385 6386 6387 6388 6389

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6390
	__iwl3945_up(priv);
Z
Zhu Yi 已提交
6391 6392 6393
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6394
static void iwl3945_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
6395
{
C
Christoph Hellwig 已提交
6396
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
Z
Zhu Yi 已提交
6397 6398 6399 6400

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

C
Christoph Hellwig 已提交
6401
	iwl3945_down(priv);
Z
Zhu Yi 已提交
6402 6403 6404
	queue_work(priv->workqueue, &priv->up);
}

C
Christoph Hellwig 已提交
6405
static void iwl3945_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
6406
{
C
Christoph Hellwig 已提交
6407 6408
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, rx_replenish);
Z
Zhu Yi 已提交
6409 6410 6411 6412 6413

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6414
	iwl3945_rx_replenish(priv);
Z
Zhu Yi 已提交
6415 6416 6417
	mutex_unlock(&priv->mutex);
}

6418 6419
#define IWL_DELAY_NEXT_SCAN (HZ*2)

C
Christoph Hellwig 已提交
6420
static void iwl3945_bg_post_associate(struct work_struct *data)
Z
Zhu Yi 已提交
6421
{
C
Christoph Hellwig 已提交
6422
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
Z
Zhu Yi 已提交
6423 6424 6425 6426
					     post_associate.work);

	int rc = 0;
	struct ieee80211_conf *conf = NULL;
6427
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6428 6429 6430 6431 6432 6433 6434

	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
		return;
	}


6435 6436 6437
	IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
			priv->assoc_id,
			print_mac(mac, priv->active_rxon.bssid_addr));
Z
Zhu Yi 已提交
6438 6439 6440 6441 6442 6443

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

	mutex_lock(&priv->mutex);

6444
	if (!priv->vif || !priv->is_open) {
6445 6446 6447
		mutex_unlock(&priv->mutex);
		return;
	}
C
Christoph Hellwig 已提交
6448
	iwl3945_scan_cancel_timeout(priv, 200);
6449

Z
Zhu Yi 已提交
6450 6451 6452
	conf = ieee80211_get_hw_conf(priv->hw);

	priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6453
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6454

C
Christoph Hellwig 已提交
6455 6456 6457
	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
6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485
			      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;

		if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
			priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;

	}

C
Christoph Hellwig 已提交
6486
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6487 6488 6489

	switch (priv->iw_mode) {
	case IEEE80211_IF_TYPE_STA:
C
Christoph Hellwig 已提交
6490
		iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Z
Zhu Yi 已提交
6491 6492 6493 6494 6495
		break;

	case IEEE80211_IF_TYPE_IBSS:

		/* clear out the station table */
C
Christoph Hellwig 已提交
6496
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
6497

C
Christoph Hellwig 已提交
6498 6499
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
		iwl3945_add_station(priv, priv->bssid, 0, 0);
Z
Zhu Yi 已提交
6500
		iwl3945_sync_sta(priv, IWL_STA_ID,
6501
				 (priv->band == IEEE80211_BAND_5GHZ) ?
Z
Zhu Yi 已提交
6502 6503
				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
				 CMD_ASYNC);
C
Christoph Hellwig 已提交
6504 6505
		iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
		iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6506 6507 6508 6509 6510

		break;

	default:
		 IWL_ERROR("%s Should not be called in %d mode\n",
6511
			   __FUNCTION__, priv->iw_mode);
Z
Zhu Yi 已提交
6512 6513 6514
		break;
	}

C
Christoph Hellwig 已提交
6515
	iwl3945_sequence_reset(priv);
Z
Zhu Yi 已提交
6516

C
Christoph Hellwig 已提交
6517
	iwl3945_activate_qos(priv, 0);
6518

6519 6520
	/* we have just associated, don't start scan too early */
	priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
Z
Zhu Yi 已提交
6521 6522 6523
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6524
static void iwl3945_bg_abort_scan(struct work_struct *work)
Z
Zhu Yi 已提交
6525
{
C
Christoph Hellwig 已提交
6526
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
Z
Zhu Yi 已提交
6527

C
Christoph Hellwig 已提交
6528
	if (!iwl3945_is_ready(priv))
Z
Zhu Yi 已提交
6529 6530 6531 6532 6533
		return;

	mutex_lock(&priv->mutex);

	set_bit(STATUS_SCAN_ABORTING, &priv->status);
C
Christoph Hellwig 已提交
6534
	iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6535 6536 6537 6538

	mutex_unlock(&priv->mutex);
}

6539 6540
static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);

C
Christoph Hellwig 已提交
6541
static void iwl3945_bg_scan_completed(struct work_struct *work)
Z
Zhu Yi 已提交
6542
{
C
Christoph Hellwig 已提交
6543 6544
	struct iwl3945_priv *priv =
	    container_of(work, struct iwl3945_priv, scan_completed);
Z
Zhu Yi 已提交
6545 6546 6547 6548 6549 6550

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

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

6551 6552
	if (test_bit(STATUS_CONF_PENDING, &priv->status))
		iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6553

Z
Zhu Yi 已提交
6554 6555 6556 6557 6558
	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
6559
	iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
6560 6561 6562 6563 6564 6565 6566 6567 6568
	mutex_unlock(&priv->mutex);
}

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

6569 6570
#define UCODE_READY_TIMEOUT	(2 * HZ)

C
Christoph Hellwig 已提交
6571
static int iwl3945_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6572
{
C
Christoph Hellwig 已提交
6573
	struct iwl3945_priv *priv = hw->priv;
6574
	int ret;
Z
Zhu Yi 已提交
6575 6576 6577

	IWL_DEBUG_MAC80211("enter\n");

6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591
	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
6592 6593 6594
	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);

6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606
	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
6607

6608
	ret = __iwl3945_up(priv);
Z
Zhu Yi 已提交
6609 6610

	mutex_unlock(&priv->mutex);
6611

6612 6613 6614 6615 6616 6617 6618 6619
	if (ret)
		goto out_release_irq;

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

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

6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633
	/* 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;
		}
	}

6634
	priv->is_open = 1;
Z
Zhu Yi 已提交
6635 6636
	IWL_DEBUG_MAC80211("leave\n");
	return 0;
6637 6638 6639 6640 6641

out_release_irq:
	free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
	pci_disable_msi(priv->pci_dev);
6642 6643 6644
	pci_disable_device(priv->pci_dev);
	priv->is_open = 0;
	IWL_DEBUG_MAC80211("leave - failed\n");
6645
	return ret;
Z
Zhu Yi 已提交
6646 6647
}

C
Christoph Hellwig 已提交
6648
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6649
{
C
Christoph Hellwig 已提交
6650
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6651 6652

	IWL_DEBUG_MAC80211("enter\n");
6653

6654 6655 6656 6657 6658
	if (!priv->is_open) {
		IWL_DEBUG_MAC80211("leave - skip\n");
		return;
	}

Z
Zhu Yi 已提交
6659
	priv->is_open = 0;
6660 6661

	if (iwl3945_is_ready_rf(priv)) {
6662 6663 6664
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
6665 6666 6667
		mutex_lock(&priv->mutex);
		iwl3945_scan_cancel_timeout(priv, 100);
		cancel_delayed_work(&priv->post_associate);
6668 6669 6670
		mutex_unlock(&priv->mutex);
	}

6671 6672 6673 6674 6675 6676 6677
	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);
6678

Z
Zhu Yi 已提交
6679 6680 6681
	IWL_DEBUG_MAC80211("leave\n");
}

6682
static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
6683
{
C
Christoph Hellwig 已提交
6684
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6685 6686 6687 6688 6689 6690 6691 6692 6693

	IWL_DEBUG_MAC80211("enter\n");

	if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
		IWL_DEBUG_MAC80211("leave - monitor\n");
		return -1;
	}

	IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6694
		     ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Z
Zhu Yi 已提交
6695

6696
	if (iwl3945_tx_skb(priv, skb))
Z
Zhu Yi 已提交
6697 6698 6699 6700 6701 6702
		dev_kfree_skb_any(skb);

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

C
Christoph Hellwig 已提交
6703
static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6704 6705
				 struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6706
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6707
	unsigned long flags;
6708
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6709

6710
	IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Z
Zhu Yi 已提交
6711

6712 6713
	if (priv->vif) {
		IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6714
		return -EOPNOTSUPP;
Z
Zhu Yi 已提交
6715 6716 6717
	}

	spin_lock_irqsave(&priv->lock, flags);
6718
	priv->vif = conf->vif;
Z
Zhu Yi 已提交
6719 6720 6721 6722

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6723 6724 6725 6726 6727 6728

	if (conf->mac_addr) {
		IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
		memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
	}

6729 6730
	if (iwl3945_is_ready(priv))
		iwl3945_set_mode(priv, conf->type);
Z
Zhu Yi 已提交
6731 6732 6733

	mutex_unlock(&priv->mutex);

6734
	IWL_DEBUG_MAC80211("leave\n");
Z
Zhu Yi 已提交
6735 6736 6737 6738
	return 0;
}

/**
C
Christoph Hellwig 已提交
6739
 * iwl3945_mac_config - mac80211 config callback
Z
Zhu Yi 已提交
6740 6741 6742 6743 6744
 *
 * 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.
 */
C
Christoph Hellwig 已提交
6745
static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
Z
Zhu Yi 已提交
6746
{
C
Christoph Hellwig 已提交
6747 6748
	struct iwl3945_priv *priv = hw->priv;
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
6749
	unsigned long flags;
6750
	int ret = 0;
Z
Zhu Yi 已提交
6751 6752

	mutex_lock(&priv->mutex);
6753
	IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Z
Zhu Yi 已提交
6754

Z
Zhu Yi 已提交
6755 6756
	priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);

C
Christoph Hellwig 已提交
6757
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6758
		IWL_DEBUG_MAC80211("leave - not ready\n");
6759 6760
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6761 6762
	}

C
Christoph Hellwig 已提交
6763
	if (unlikely(!iwl3945_param_disable_hw_scan &&
Z
Zhu Yi 已提交
6764
		     test_bit(STATUS_SCANNING, &priv->status))) {
6765 6766
		IWL_DEBUG_MAC80211("leave - scanning\n");
		set_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6767
		mutex_unlock(&priv->mutex);
6768
		return 0;
Z
Zhu Yi 已提交
6769 6770 6771 6772
	}

	spin_lock_irqsave(&priv->lock, flags);

6773 6774
	ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
					   conf->channel->hw_value);
Z
Zhu Yi 已提交
6775
	if (!is_channel_valid(ch_info)) {
6776
		IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
6777
			       conf->channel->hw_value, conf->channel->band);
Z
Zhu Yi 已提交
6778 6779
		IWL_DEBUG_MAC80211("leave - invalid channel\n");
		spin_unlock_irqrestore(&priv->lock, flags);
6780 6781
		ret = -EINVAL;
		goto out;
Z
Zhu Yi 已提交
6782 6783
	}

6784
	iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Z
Zhu Yi 已提交
6785

6786
	iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Z
Zhu Yi 已提交
6787 6788 6789 6790

	/* 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
6791
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6792 6793 6794 6795 6796

	spin_unlock_irqrestore(&priv->lock, flags);

#ifdef IEEE80211_CONF_CHANNEL_SWITCH
	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
C
Christoph Hellwig 已提交
6797
		iwl3945_hw_channel_switch(priv, conf->channel);
6798
		goto out;
Z
Zhu Yi 已提交
6799 6800 6801
	}
#endif

C
Christoph Hellwig 已提交
6802
	iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Z
Zhu Yi 已提交
6803 6804 6805

	if (!conf->radio_enabled) {
		IWL_DEBUG_MAC80211("leave - radio disabled\n");
6806
		goto out;
Z
Zhu Yi 已提交
6807 6808
	}

C
Christoph Hellwig 已提交
6809
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6810
		IWL_DEBUG_MAC80211("leave - RF kill\n");
6811 6812
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6813 6814
	}

C
Christoph Hellwig 已提交
6815
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6816 6817 6818

	if (memcmp(&priv->active_rxon,
		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
C
Christoph Hellwig 已提交
6819
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6820 6821 6822 6823 6824
	else
		IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");

	IWL_DEBUG_MAC80211("leave\n");

6825
out:
6826
	clear_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6827
	mutex_unlock(&priv->mutex);
6828
	return ret;
Z
Zhu Yi 已提交
6829 6830
}

C
Christoph Hellwig 已提交
6831
static void iwl3945_config_ap(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6832 6833 6834
{
	int rc = 0;

6835
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
6836 6837 6838 6839 6840 6841 6842
		return;

	/* The following should be done only at AP bring up */
	if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {

		/* RXON - unassoc (to set timing command) */
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6843
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6844 6845

		/* RXON Timing */
C
Christoph Hellwig 已提交
6846 6847 6848
		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
6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877
				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;

			if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
				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
6878 6879
		iwl3945_commit_rxon(priv);
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6880
	}
C
Christoph Hellwig 已提交
6881
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6882 6883 6884 6885 6886 6887

	/* 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... */
}

6888 6889
static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
Z
Zhu Yi 已提交
6890 6891
				    struct ieee80211_if_conf *conf)
{
C
Christoph Hellwig 已提交
6892
	struct iwl3945_priv *priv = hw->priv;
6893
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6894 6895 6896 6897 6898 6899
	unsigned long flags;
	int rc;

	if (conf == NULL)
		return -EIO;

6900 6901 6902 6903 6904
	if (priv->vif != vif) {
		IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
		return 0;
	}

6905 6906
	/* XXX: this MUST use conf->mac_addr */

Z
Zhu Yi 已提交
6907 6908 6909 6910 6911 6912 6913
	if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
	    (!conf->beacon || !conf->ssid_len)) {
		IWL_DEBUG_MAC80211
		    ("Leaving in AP mode because HostAPD is not ready.\n");
		return 0;
	}

6914 6915 6916
	if (!iwl3945_is_alive(priv))
		return -EAGAIN;

Z
Zhu Yi 已提交
6917 6918 6919
	mutex_lock(&priv->mutex);

	if (conf->bssid)
6920 6921
		IWL_DEBUG_MAC80211("bssid: %s\n",
				   print_mac(mac, conf->bssid));
Z
Zhu Yi 已提交
6922

6923 6924 6925
/*
 * very dubious code was here; the probe filtering flag is never set:
 *
Z
Zhu Yi 已提交
6926 6927
	if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
	    !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6928
 */
Z
Zhu Yi 已提交
6929 6930 6931 6932 6933

	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		if (!conf->bssid) {
			conf->bssid = priv->mac_addr;
			memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6934 6935
			IWL_DEBUG_MAC80211("bssid was set to: %s\n",
					   print_mac(mac, conf->bssid));
Z
Zhu Yi 已提交
6936 6937 6938 6939 6940 6941 6942
		}
		if (priv->ibss_beacon)
			dev_kfree_skb(priv->ibss_beacon);

		priv->ibss_beacon = conf->beacon;
	}

6943 6944 6945
	if (iwl3945_is_rfkill(priv))
		goto done;

Z
Zhu Yi 已提交
6946 6947 6948 6949
	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
6950
		if (iwl3945_scan_cancel_timeout(priv, 100)) {
Z
Zhu Yi 已提交
6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964 6965
			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);

		if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
C
Christoph Hellwig 已提交
6966
			iwl3945_config_ap(priv);
Z
Zhu Yi 已提交
6967
		else {
C
Christoph Hellwig 已提交
6968
			rc = iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6969
			if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
C
Christoph Hellwig 已提交
6970
				iwl3945_add_station(priv,
6971
					priv->active_rxon.bssid_addr, 1, 0);
Z
Zhu Yi 已提交
6972 6973 6974
		}

	} else {
C
Christoph Hellwig 已提交
6975
		iwl3945_scan_cancel_timeout(priv, 100);
Z
Zhu Yi 已提交
6976
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6977
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6978 6979
	}

6980
 done:
Z
Zhu Yi 已提交
6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995
	spin_lock_irqsave(&priv->lock, flags);
	if (!conf->ssid_len)
		memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
	else
		memcpy(priv->essid, conf->ssid, conf->ssid_len);

	priv->essid_len = conf->ssid_len;
	spin_unlock_irqrestore(&priv->lock, flags);

	IWL_DEBUG_MAC80211("leave\n");
	mutex_unlock(&priv->mutex);

	return 0;
}

C
Christoph Hellwig 已提交
6996
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6997 6998 6999 7000 7001 7002
				 unsigned int changed_flags,
				 unsigned int *total_flags,
				 int mc_count, struct dev_addr_list *mc_list)
{
	/*
	 * XXX: dummy
C
Christoph Hellwig 已提交
7003
	 * see also iwl3945_connection_init_rx_config
7004
	 */
7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020
	struct iwl3945_priv *priv = hw->priv;
	int new_flags = 0;
	if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
		if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
			IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
					   IEEE80211_IF_TYPE_MNTR,
					   changed_flags, *total_flags);
			/* queue work 'cuz mac80211 is holding a lock which
			 * prevents us from issuing (synchronous) f/w cmds */
			queue_work(priv->workqueue, &priv->set_monitor);
			new_flags &= FIF_PROMISC_IN_BSS |
				     FIF_OTHER_BSS |
				     FIF_ALLMULTI;
		}
	}
	*total_flags = new_flags;
7021 7022
}

C
Christoph Hellwig 已提交
7023
static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7024 7025
				     struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
7026
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7027 7028 7029 7030

	IWL_DEBUG_MAC80211("enter\n");

	mutex_lock(&priv->mutex);
7031

7032 7033 7034 7035 7036 7037
	if (iwl3945_is_ready_rf(priv)) {
		iwl3945_scan_cancel_timeout(priv, 100);
		cancel_delayed_work(&priv->post_associate);
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
		iwl3945_commit_rxon(priv);
	}
7038 7039
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
Z
Zhu Yi 已提交
7040 7041 7042 7043 7044 7045 7046 7047 7048
		memset(priv->bssid, 0, ETH_ALEN);
		memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
		priv->essid_len = 0;
	}
	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");
}

C
Christoph Hellwig 已提交
7049
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Z
Zhu Yi 已提交
7050 7051 7052
{
	int rc = 0;
	unsigned long flags;
C
Christoph Hellwig 已提交
7053
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7054 7055 7056

	IWL_DEBUG_MAC80211("enter\n");

7057
	mutex_lock(&priv->mutex);
Z
Zhu Yi 已提交
7058 7059
	spin_lock_irqsave(&priv->lock, flags);

C
Christoph Hellwig 已提交
7060
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071
		rc = -EIO;
		IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
		goto out_unlock;
	}

	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {	/* APs don't scan */
		rc = -EIO;
		IWL_ERROR("ERROR: APs don't scan\n");
		goto out_unlock;
	}

7072 7073 7074 7075 7076 7077
	/* 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;
	}
7078 7079 7080 7081
	/* 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
7082 7083 7084 7085
		rc = -EAGAIN;
		goto out_unlock;
	}
	if (len) {
7086
		IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
C
Christoph Hellwig 已提交
7087
			       iwl3945_escape_essid(ssid, len), (int)len);
Z
Zhu Yi 已提交
7088 7089 7090 7091 7092

		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);
7093 7094
	} else
		priv->one_direct_scan = 0;
Z
Zhu Yi 已提交
7095

C
Christoph Hellwig 已提交
7096
	rc = iwl3945_scan_initiate(priv);
Z
Zhu Yi 已提交
7097 7098 7099 7100 7101

	IWL_DEBUG_MAC80211("leave\n");

out_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
7102
	mutex_unlock(&priv->mutex);
Z
Zhu Yi 已提交
7103 7104 7105 7106

	return rc;
}

C
Christoph Hellwig 已提交
7107
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Z
Zhu Yi 已提交
7108 7109 7110
			   const u8 *local_addr, const u8 *addr,
			   struct ieee80211_key_conf *key)
{
C
Christoph Hellwig 已提交
7111
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7112 7113 7114 7115 7116
	int rc = 0;
	u8 sta_id;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7117
	if (!iwl3945_param_hwcrypto) {
Z
Zhu Yi 已提交
7118 7119 7120 7121 7122 7123 7124 7125
		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
7126
	sta_id = iwl3945_hw_find_station(priv, addr);
Z
Zhu Yi 已提交
7127
	if (sta_id == IWL_INVALID_STATION) {
7128 7129 7130 7131
		DECLARE_MAC_BUF(mac);

		IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
				   print_mac(mac, addr));
Z
Zhu Yi 已提交
7132 7133 7134 7135 7136
		return -EINVAL;
	}

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
7137
	iwl3945_scan_cancel_timeout(priv, 100);
7138

Z
Zhu Yi 已提交
7139 7140
	switch (cmd) {
	case  SET_KEY:
C
Christoph Hellwig 已提交
7141
		rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Z
Zhu Yi 已提交
7142
		if (!rc) {
C
Christoph Hellwig 已提交
7143 7144
			iwl3945_set_rxon_hwcrypto(priv, 1);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7145 7146 7147 7148 7149 7150
			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
7151
		rc = iwl3945_clear_sta_key_info(priv, sta_id);
Z
Zhu Yi 已提交
7152
		if (!rc) {
C
Christoph Hellwig 已提交
7153 7154
			iwl3945_set_rxon_hwcrypto(priv, 0);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7155 7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167
			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
7168
static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
Z
Zhu Yi 已提交
7169 7170
			   const struct ieee80211_tx_queue_params *params)
{
C
Christoph Hellwig 已提交
7171
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7172 7173 7174 7175 7176
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7177
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199
		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;
	}

	if (!priv->qos_data.qos_enable) {
		priv->qos_data.qos_active = 0;
		IWL_DEBUG_MAC80211("leave - qos not enabled\n");
		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 =
7200
			cpu_to_le16((params->txop * 32));
Z
Zhu Yi 已提交
7201 7202 7203 7204 7205 7206 7207 7208

	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);
	if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
C
Christoph Hellwig 已提交
7209 7210 7211
		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
7212 7213 7214 7215 7216 7217 7218

	mutex_unlock(&priv->mutex);

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

C
Christoph Hellwig 已提交
7219
static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7220 7221
				struct ieee80211_tx_queue_stats *stats)
{
C
Christoph Hellwig 已提交
7222
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7223
	int i, avail;
C
Christoph Hellwig 已提交
7224 7225
	struct iwl3945_tx_queue *txq;
	struct iwl3945_queue *q;
Z
Zhu Yi 已提交
7226 7227 7228 7229
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7230
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7231 7232 7233 7234 7235 7236 7237 7238 7239
		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
7240
		avail = iwl3945_queue_space(q);
Z
Zhu Yi 已提交
7241

7242 7243 7244
		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
7245 7246 7247 7248 7249 7250 7251 7252 7253

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

	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7254
static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7255 7256 7257 7258 7259 7260 7261 7262
			     struct ieee80211_low_level_stats *stats)
{
	IWL_DEBUG_MAC80211("enter\n");
	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7263
static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7264 7265 7266 7267 7268 7269 7270
{
	IWL_DEBUG_MAC80211("enter\n");
	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7271
static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7272
{
C
Christoph Hellwig 已提交
7273
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7274 7275 7276 7277 7278
	unsigned long flags;

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

C
Christoph Hellwig 已提交
7279
	iwl3945_reset_qos(priv);
7280

Z
Zhu Yi 已提交
7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301
	cancel_delayed_work(&priv->post_associate);

	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;
	if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
		priv->beacon_int = 0;

	spin_unlock_irqrestore(&priv->lock, flags);

7302 7303 7304 7305 7306 7307
	if (!iwl3945_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211("leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

7308 7309 7310 7311
	/* we are restarting association process
	 * clear RXON_FILTER_ASSOC_MSK bit
	*/
	if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
C
Christoph Hellwig 已提交
7312
		iwl3945_scan_cancel_timeout(priv, 100);
7313
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
7314
		iwl3945_commit_rxon(priv);
7315 7316
	}

Z
Zhu Yi 已提交
7317 7318
	/* Per mac80211.h: This is only used in IBSS mode... */
	if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7319

Z
Zhu Yi 已提交
7320 7321 7322 7323 7324
		IWL_DEBUG_MAC80211("leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

C
Christoph Hellwig 已提交
7325
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
7326 7327 7328 7329 7330 7331 7332

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");

}

7333
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
Z
Zhu Yi 已提交
7334
{
C
Christoph Hellwig 已提交
7335
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7336 7337 7338 7339 7340
	unsigned long flags;

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

C
Christoph Hellwig 已提交
7341
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364
		IWL_DEBUG_MAC80211("leave - RF not ready\n");
		mutex_unlock(&priv->mutex);
		return -EIO;
	}

	if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
		IWL_DEBUG_MAC80211("leave - not IBSS\n");
		mutex_unlock(&priv->mutex);
		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
7365
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379

	queue_work(priv->workqueue, &priv->post_associate.work);

	mutex_unlock(&priv->mutex);

	return 0;
}

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

7380
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391

/*
 * 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
7392
	return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
Z
Zhu Yi 已提交
7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404
}
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
7405
		iwl3945_debug_level = val;
Z
Zhu Yi 已提交
7406 7407 7408 7409 7410 7411 7412

	return strnlen(buf, count);
}

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

7413
#endif /* CONFIG_IWL3945_DEBUG */
Z
Zhu Yi 已提交
7414 7415 7416 7417 7418 7419 7420 7421 7422 7423

static ssize_t show_rf_kill(struct device *d,
			    struct device_attribute *attr, char *buf)
{
	/*
	 * 0 - RF kill not enabled
	 * 1 - SW based RF kill active (sysfs)
	 * 2 - HW based RF kill active
	 * 3 - Both HW and SW based RF kill active
	 */
C
Christoph Hellwig 已提交
7424
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7425 7426 7427 7428 7429 7430 7431 7432 7433 7434
	int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
		  (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);

	return sprintf(buf, "%i\n", val);
}

static ssize_t store_rf_kill(struct device *d,
			     struct device_attribute *attr,
			     const char *buf, size_t count)
{
C
Christoph Hellwig 已提交
7435
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7436 7437

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7438
	iwl3945_radio_kill_sw(priv, buf[0] == '1');
Z
Zhu Yi 已提交
7439 7440 7441 7442 7443 7444 7445 7446 7447 7448
	mutex_unlock(&priv->mutex);

	return count;
}

static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);

static ssize_t show_temperature(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7449
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7450

C
Christoph Hellwig 已提交
7451
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7452 7453
		return -EAGAIN;

C
Christoph Hellwig 已提交
7454
	return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Z
Zhu Yi 已提交
7455 7456 7457 7458 7459 7460 7461 7462
}

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

static ssize_t show_rs_window(struct device *d,
			      struct device_attribute *attr,
			      char *buf)
{
C
Christoph Hellwig 已提交
7463 7464
	struct iwl3945_priv *priv = d->driver_data;
	return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
Z
Zhu Yi 已提交
7465 7466 7467 7468 7469 7470
}
static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);

static ssize_t show_tx_power(struct device *d,
			     struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7471
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7472 7473 7474 7475 7476 7477 7478
	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
7479
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7480 7481 7482 7483 7484 7485 7486 7487
	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
7488
		iwl3945_hw_reg_set_txpower(priv, val);
Z
Zhu Yi 已提交
7489 7490 7491 7492 7493 7494 7495 7496 7497

	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
7498
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7499 7500 7501 7502 7503 7504 7505 7506

	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
7507
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7508 7509 7510 7511 7512
	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
7513
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7514 7515 7516 7517 7518
			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
7519
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531
		}
	}
	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
7532
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7533 7534 7535 7536 7537 7538 7539 7540 7541

	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
7542
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7543 7544 7545 7546 7547
	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
7548
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7549 7550 7551 7552 7553 7554
			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
7555
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7556 7557 7558 7559 7560 7561 7562 7563 7564 7565
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

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

7566
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7567 7568 7569 7570

static ssize_t show_measurement(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7571 7572
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	struct iwl3945_spectrum_notification measure_report;
Z
Zhu Yi 已提交
7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603
	u32 size = sizeof(measure_report), len = 0, ofs = 0;
	u8 *data = (u8 *) & measure_report;
	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
7604
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7605 7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629
	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
7630
	iwl3945_get_measurement(priv, &params, type);
Z
Zhu Yi 已提交
7631 7632 7633 7634 7635 7636

	return count;
}

static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
		   show_measurement, store_measurement);
7637
#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Z
Zhu Yi 已提交
7638 7639 7640 7641 7642

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
7643
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654

	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
7655
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7656 7657 7658 7659 7660 7661 7662 7663 7664 7665
	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
7666
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7667 7668 7669 7670 7671 7672
	int rc;
	int mode;

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

C
Christoph Hellwig 已提交
7673
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
7674 7675 7676 7677 7678 7679 7680 7681 7682 7683
		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
7684
		rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Z
Zhu Yi 已提交
7685 7686 7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719
		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
7720
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754
	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");

	return (p - buf + 1);

}

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)
{
7755 7756
	/* all this shit doesn't belong into sysfs anyway */
	return 0;
Z
Zhu Yi 已提交
7757 7758 7759 7760 7761 7762 7763
}

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
7764 7765
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	u32 size = sizeof(struct iwl3945_notif_statistics);
Z
Zhu Yi 已提交
7766 7767 7768 7769
	u32 len = 0, ofs = 0;
	u8 *data = (u8 *) & priv->statistics;
	int rc = 0;

C
Christoph Hellwig 已提交
7770
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7771 7772 7773
		return -EAGAIN;

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7774
	rc = iwl3945_send_statistics_request(priv);
Z
Zhu Yi 已提交
7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793 7794 7795 7796 7797 7798 7799 7800 7801
	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
7802
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7803

C
Christoph Hellwig 已提交
7804
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7805 7806 7807 7808 7809 7810 7811 7812 7813 7814
		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
7815
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826

	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
7827
		priv->antenna = (enum iwl3945_antenna)ant;
Z
Zhu Yi 已提交
7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838 7839
	} 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
7840 7841
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7842 7843 7844 7845 7846 7847 7848 7849 7850 7851 7852 7853 7854
		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
7855
		iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868

	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
7869
		iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881

	return strnlen(buf, count);
}

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

/*****************************************************************************
 *
 * driver setup and teardown
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
7882
static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7883 7884 7885 7886 7887
{
	priv->workqueue = create_workqueue(DRV_NAME);

	init_waitqueue_head(&priv->wait_command_queue);

C
Christoph Hellwig 已提交
7888 7889 7890 7891 7892 7893 7894 7895
	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);
7896
	INIT_WORK(&priv->set_monitor, iwl3945_bg_set_monitor);
C
Christoph Hellwig 已提交
7897 7898 7899 7900 7901 7902
	INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
	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
7903 7904

	tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
C
Christoph Hellwig 已提交
7905
		     iwl3945_irq_tasklet, (unsigned long)priv);
Z
Zhu Yi 已提交
7906 7907
}

C
Christoph Hellwig 已提交
7908
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7909
{
C
Christoph Hellwig 已提交
7910
	iwl3945_hw_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
7911

7912
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
7913 7914 7915 7916 7917 7918
	cancel_delayed_work(&priv->scan_check);
	cancel_delayed_work(&priv->alive_start);
	cancel_delayed_work(&priv->post_associate);
	cancel_work_sync(&priv->beacon_update);
}

C
Christoph Hellwig 已提交
7919
static struct attribute *iwl3945_sysfs_entries[] = {
Z
Zhu Yi 已提交
7920 7921 7922 7923 7924 7925
	&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,
7926
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937 7938 7939 7940
	&dev_attr_measurement.attr,
#endif
	&dev_attr_power_level.attr,
	&dev_attr_retry_rate.attr,
	&dev_attr_rf_kill.attr,
	&dev_attr_rs_window.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
7941
static struct attribute_group iwl3945_attribute_group = {
Z
Zhu Yi 已提交
7942
	.name = NULL,		/* put in device directory */
C
Christoph Hellwig 已提交
7943
	.attrs = iwl3945_sysfs_entries,
Z
Zhu Yi 已提交
7944 7945
};

C
Christoph Hellwig 已提交
7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962
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,
	.get_tsf = iwl3945_mac_get_tsf,
	.reset_tsf = iwl3945_mac_reset_tsf,
	.beacon_update = iwl3945_mac_beacon_update,
	.hw_scan = iwl3945_mac_hw_scan
Z
Zhu Yi 已提交
7963 7964
};

C
Christoph Hellwig 已提交
7965
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
7966 7967
{
	int err = 0;
C
Christoph Hellwig 已提交
7968
	struct iwl3945_priv *priv;
Z
Zhu Yi 已提交
7969
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
7970
	struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
Z
Zhu Yi 已提交
7971
	int i;
7972
	unsigned long flags;
7973
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
7974

7975 7976
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
C
Christoph Hellwig 已提交
7977
	if (iwl3945_param_disable_hw_scan) {
Z
Zhu Yi 已提交
7978
		IWL_DEBUG_INFO("Disabling hw_scan\n");
C
Christoph Hellwig 已提交
7979
		iwl3945_hw_ops.hw_scan = NULL;
Z
Zhu Yi 已提交
7980 7981
	}

7982
	if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
C
Christoph Hellwig 已提交
7983
	    (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
Z
Zhu Yi 已提交
7984
		IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7985
			  IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
Z
Zhu Yi 已提交
7986 7987 7988 7989 7990 7991
		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
7992
	hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
Z
Zhu Yi 已提交
7993 7994 7995 7996 7997 7998 7999
	if (hw == NULL) {
		IWL_ERROR("Can not allocate network device\n");
		err = -ENOMEM;
		goto out;
	}
	SET_IEEE80211_DEV(hw, &pdev->dev);

8000 8001
	hw->rate_control_algorithm = "iwl-3945-rs";

Z
Zhu Yi 已提交
8002 8003 8004 8005 8006
	IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
	priv = hw->priv;
	priv->hw = hw;

	priv->pci_dev = pdev;
T
Tomas Winkler 已提交
8007
	priv->cfg = cfg;
8008 8009

	/* Select antenna (may be helpful if only one antenna is connected) */
C
Christoph Hellwig 已提交
8010
	priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8011
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8012
	iwl3945_debug_level = iwl3945_param_debug;
Z
Zhu Yi 已提交
8013 8014 8015 8016 8017 8018
	atomic_set(&priv->restrict_refcnt, 0);
#endif
	priv->retry_rate = 1;

	priv->ibss_beacon = NULL;

8019 8020 8021 8022
	/* Tell mac80211 our characteristics */
	hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
		    IEEE80211_HW_SIGNAL_DBM |
		    IEEE80211_HW_NOISE_DBM;
Z
Zhu Yi 已提交
8023

8024
	/* 4 EDCA QOS priorities */
Z
Zhu Yi 已提交
8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044
	hw->queues = 4;

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

	for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
		INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);

	INIT_LIST_HEAD(&priv->free_frames);

	mutex_init(&priv->mutex);
	if (pci_enable_device(pdev)) {
		err = -ENODEV;
		goto out_ieee80211_free_hw;
	}

	pci_set_master(pdev);

8045
	/* Clear the driver's (not device's) station table */
C
Christoph Hellwig 已提交
8046
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8047 8048 8049 8050

	priv->data_retry_limit = -1;
	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
8051
	priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064

	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;
8065

Z
Zhu Yi 已提交
8066 8067 8068
	/* 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);
8069

Z
Zhu Yi 已提交
8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080 8081
	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);

	/* Initialize module parameter values here */

8082
	/* Disable radio (SW RF KILL) via parameter when loading driver */
C
Christoph Hellwig 已提交
8083
	if (iwl3945_param_disable) {
Z
Zhu Yi 已提交
8084 8085 8086 8087 8088 8089 8090
		set_bit(STATUS_RF_KILL_SW, &priv->status);
		IWL_DEBUG_INFO("Radio disabled.\n");
	}

	priv->iw_mode = IEEE80211_IF_TYPE_STA;

	printk(KERN_INFO DRV_NAME
T
Tomas Winkler 已提交
8091
		": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
Z
Zhu Yi 已提交
8092 8093

	/* Device-specific setup */
C
Christoph Hellwig 已提交
8094
	if (iwl3945_hw_set_hw_setting(priv)) {
Z
Zhu Yi 已提交
8095 8096 8097 8098
		IWL_ERROR("failed to set hw settings\n");
		goto out_iounmap;
	}

C
Christoph Hellwig 已提交
8099
	if (iwl3945_param_qos_enable)
Z
Zhu Yi 已提交
8100 8101
		priv->qos_data.qos_enable = 1;

C
Christoph Hellwig 已提交
8102
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
8103 8104 8105 8106

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

8107
	iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
C
Christoph Hellwig 已提交
8108 8109
	iwl3945_setup_deferred_work(priv);
	iwl3945_setup_rx_handlers(priv);
Z
Zhu Yi 已提交
8110 8111 8112 8113 8114 8115

	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;

8116
	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
8117
	iwl3945_disable_interrupts(priv);
8118
	spin_unlock_irqrestore(&priv->lock, flags);
8119

C
Christoph Hellwig 已提交
8120
	err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8121 8122 8123 8124 8125
	if (err) {
		IWL_ERROR("failed to create sysfs device attributes\n");
		goto out_release_irq;
	}

8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139
	/* nic init */
	iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
                    CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);

        iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
        err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
        if (err < 0) {
                IWL_DEBUG_INFO("Failed to init the card\n");
		goto out_remove_sysfs;
        }
	/* Read the EEPROM */
	err = iwl3945_eeprom_init(priv);
Z
Zhu Yi 已提交
8140
	if (err) {
8141 8142
		IWL_ERROR("Unable to init EEPROM\n");
		goto out_remove_sysfs;
Z
Zhu Yi 已提交
8143
	}
8144 8145 8146 8147
	/* MAC Address location in EEPROM same for 3945/4965 */
	get_eeprom_mac(priv, priv->mac_addr);
	IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
	SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
Z
Zhu Yi 已提交
8148

8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159 8160
	err = iwl3945_init_channel_map(priv);
	if (err) {
		IWL_ERROR("initializing regulatory failed: %d\n", err);
		goto out_remove_sysfs;
	}

	err = iwl3945_init_geos(priv);
	if (err) {
		IWL_ERROR("initializing geos failed: %d\n", err);
		goto out_free_channel_map;
	}

8161 8162 8163
	err = ieee80211_register_hw(priv->hw);
	if (err) {
		IWL_ERROR("Failed to register network device (error %d)\n", err);
8164
		goto out_free_geos;
8165
	}
Z
Zhu Yi 已提交
8166

8167 8168 8169 8170
	priv->hw->conf.beacon_int = 100;
	priv->mac80211_registered = 1;
	pci_save_state(pdev);
	pci_disable_device(pdev);
Z
Zhu Yi 已提交
8171 8172 8173

	return 0;

8174 8175 8176 8177
 out_free_geos:
	iwl3945_free_geos(priv);
 out_free_channel_map:
	iwl3945_free_channel_map(priv);
8178
 out_remove_sysfs:
C
Christoph Hellwig 已提交
8179
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8180 8181 8182 8183

 out_release_irq:
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
C
Christoph Hellwig 已提交
8184
	iwl3945_unset_hw_setting(priv);
Z
Zhu Yi 已提交
8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198

 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;
}

8199
static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8200
{
C
Christoph Hellwig 已提交
8201
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8202 8203
	struct list_head *p, *q;
	int i;
8204
	unsigned long flags;
Z
Zhu Yi 已提交
8205 8206 8207 8208 8209 8210 8211

	if (!priv)
		return;

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

	set_bit(STATUS_EXIT_PENDING, &priv->status);
8212

C
Christoph Hellwig 已提交
8213
	iwl3945_down(priv);
Z
Zhu Yi 已提交
8214

8215 8216 8217 8218 8219 8220 8221 8222 8223
	/* 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);

Z
Zhu Yi 已提交
8224 8225 8226 8227
	/* Free MAC hash list for ADHOC */
	for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
		list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
			list_del(p);
C
Christoph Hellwig 已提交
8228
			kfree(list_entry(p, struct iwl3945_ibss_seq, list));
Z
Zhu Yi 已提交
8229 8230 8231
		}
	}

C
Christoph Hellwig 已提交
8232
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8233

C
Christoph Hellwig 已提交
8234
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
8235 8236

	if (priv->rxq.bd)
C
Christoph Hellwig 已提交
8237 8238
		iwl3945_rx_queue_free(priv, &priv->rxq);
	iwl3945_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
8239

C
Christoph Hellwig 已提交
8240 8241
	iwl3945_unset_hw_setting(priv);
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8242 8243 8244 8245 8246

	if (priv->mac80211_registered) {
		ieee80211_unregister_hw(priv->hw);
	}

8247 8248 8249
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

C
Christoph Hellwig 已提交
8250
	/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Z
Zhu Yi 已提交
8251 8252 8253 8254 8255 8256 8257 8258 8259 8260
	 * 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);

8261 8262
	iwl3945_free_channel_map(priv);
	iwl3945_free_geos(priv);
8263
	kfree(priv->scan);
Z
Zhu Yi 已提交
8264 8265 8266 8267 8268 8269 8270 8271
	if (priv->ibss_beacon)
		dev_kfree_skb(priv->ibss_beacon);

	ieee80211_free_hw(priv->hw);
}

#ifdef CONFIG_PM

C
Christoph Hellwig 已提交
8272
static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Z
Zhu Yi 已提交
8273
{
C
Christoph Hellwig 已提交
8274
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8275

8276 8277 8278 8279 8280
	if (priv->is_open) {
		set_bit(STATUS_IN_SUSPEND, &priv->status);
		iwl3945_mac_stop(priv->hw);
		priv->is_open = 1;
	}
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Zhu Yi 已提交
8281 8282 8283 8284 8285 8286

	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

C
Christoph Hellwig 已提交
8287
static int iwl3945_pci_resume(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8288
{
C
Christoph Hellwig 已提交
8289
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8290 8291 8292

	pci_set_power_state(pdev, PCI_D0);

8293 8294
	if (priv->is_open)
		iwl3945_mac_start(priv->hw);
Z
Zhu Yi 已提交
8295

8296
	clear_bit(STATUS_IN_SUSPEND, &priv->status);
Z
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8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307
	return 0;
}

#endif /* CONFIG_PM */

/*****************************************************************************
 *
 * driver and module entry point
 *
 *****************************************************************************/

C
Christoph Hellwig 已提交
8308
static struct pci_driver iwl3945_driver = {
Z
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8309
	.name = DRV_NAME,
C
Christoph Hellwig 已提交
8310 8311 8312
	.id_table = iwl3945_hw_card_ids,
	.probe = iwl3945_pci_probe,
	.remove = __devexit_p(iwl3945_pci_remove),
Z
Zhu Yi 已提交
8313
#ifdef CONFIG_PM
C
Christoph Hellwig 已提交
8314 8315
	.suspend = iwl3945_pci_suspend,
	.resume = iwl3945_pci_resume,
Z
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8316 8317 8318
#endif
};

C
Christoph Hellwig 已提交
8319
static int __init iwl3945_init(void)
Z
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8320 8321 8322 8323 8324
{

	int ret;
	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8325 8326 8327 8328 8329 8330 8331

	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
8332
	ret = pci_register_driver(&iwl3945_driver);
Z
Zhu Yi 已提交
8333 8334
	if (ret) {
		IWL_ERROR("Unable to initialize PCI module\n");
8335
		goto error_register;
Z
Zhu Yi 已提交
8336
	}
8337
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8338
	ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
Z
Zhu Yi 已提交
8339 8340
	if (ret) {
		IWL_ERROR("Unable to create driver sysfs file\n");
8341
		goto error_debug;
Z
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8342 8343 8344 8345
	}
#endif

	return ret;
8346 8347 8348 8349 8350 8351 8352 8353

#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
8354 8355
}

C
Christoph Hellwig 已提交
8356
static void __exit iwl3945_exit(void)
Z
Zhu Yi 已提交
8357
{
8358
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8359
	driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
Z
Zhu Yi 已提交
8360
#endif
C
Christoph Hellwig 已提交
8361
	pci_unregister_driver(&iwl3945_driver);
8362
	iwl3945_rate_control_unregister();
Z
Zhu Yi 已提交
8363 8364
}

C
Christoph Hellwig 已提交
8365
module_param_named(antenna, iwl3945_param_antenna, int, 0444);
Z
Zhu Yi 已提交
8366
MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
C
Christoph Hellwig 已提交
8367
module_param_named(disable, iwl3945_param_disable, int, 0444);
Z
Zhu Yi 已提交
8368
MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
C
Christoph Hellwig 已提交
8369
module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
Z
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8370 8371
MODULE_PARM_DESC(hwcrypto,
		 "using hardware crypto engine (default 0 [software])\n");
C
Christoph Hellwig 已提交
8372
module_param_named(debug, iwl3945_param_debug, int, 0444);
Z
Zhu Yi 已提交
8373
MODULE_PARM_DESC(debug, "debug output mask");
C
Christoph Hellwig 已提交
8374
module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
Z
Zhu Yi 已提交
8375 8376
MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");

C
Christoph Hellwig 已提交
8377
module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
Z
Zhu Yi 已提交
8378 8379 8380
MODULE_PARM_DESC(queues_num, "number of hw queues.");

/* QoS */
C
Christoph Hellwig 已提交
8381
module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
Z
Zhu Yi 已提交
8382 8383
MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");

C
Christoph Hellwig 已提交
8384 8385
module_exit(iwl3945_exit);
module_init(iwl3945_init);