iwl3945-base.c 232.6 KB
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/******************************************************************************
 *
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 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
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 *
 * Portions of this file are derived from the ipw3945 project, as well
 * as portions of the ieee80211 subsystem header files.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * 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 */
int iwl3945_param_queues_num = IWL_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 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
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{
	u16 fc = le16_to_cpu(hdr->frame_control);
	int hdr_len = ieee80211_get_hdrlen(fc);

	if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
		return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
	return NULL;
}

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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);
}

C
Christoph Hellwig 已提交
540
static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
541 542 543 544
{
	return test_bit(STATUS_ALIVE, &priv->status);
}

C
Christoph Hellwig 已提交
545
static inline int iwl3945_is_init(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
546 547 548 549
{
	return test_bit(STATUS_INIT, &priv->status);
}

C
Christoph Hellwig 已提交
550
static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
551 552 553 554 555
{
	return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
	       test_bit(STATUS_RF_KILL_SW, &priv->status);
}

C
Christoph Hellwig 已提交
556
static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
557 558
{

C
Christoph Hellwig 已提交
559
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
560 561
		return 0;

C
Christoph Hellwig 已提交
562
	return iwl3945_is_ready(priv);
Z
Zhu Yi 已提交
563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620
}

/*************** 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
621
 * iwl3945_enqueue_hcmd - enqueue a uCode command
Z
Zhu Yi 已提交
622 623 624 625 626 627 628
 * @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
629
static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
630
{
C
Christoph Hellwig 已提交
631 632 633
	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
634
	u32 *control_flags;
C
Christoph Hellwig 已提交
635
	struct iwl3945_cmd *out_cmd;
Z
Zhu Yi 已提交
636 637 638 639 640 641 642 643 644 645 646 647 648 649
	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));

650 651 652 653 654 655

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

C
Christoph Hellwig 已提交
656
	if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
Z
Zhu Yi 已提交
657 658 659 660 661 662
		IWL_ERROR("No space for Tx\n");
		return -ENOSPC;
	}

	spin_lock_irqsave(&priv->hcmd_lock, flags);

663
	tfd = &txq->bd[q->write_ptr];
Z
Zhu Yi 已提交
664 665 666 667
	memset(tfd, 0, sizeof(*tfd));

	control_flags = (u32 *) tfd;

668
	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
Z
Zhu Yi 已提交
669 670 671 672 673 674 675 676 677 678 679
	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) |
680
			INDEX_TO_SEQ(q->write_ptr));
Z
Zhu Yi 已提交
681 682 683 684
	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
685 686
			offsetof(struct iwl3945_cmd, hdr);
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
Z
Zhu Yi 已提交
687 688 689 690 691 692 693 694 695

	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),
696
		     fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Z
Zhu Yi 已提交
697 698

	txq->need_update = 1;
699 700

	/* Increment and update queue's write index */
T
Tomas Winkler 已提交
701
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
702
	ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
703 704 705 706 707

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

C
Christoph Hellwig 已提交
708
static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
709 710 711 712 713 714 715 716 717 718 719 720 721 722
{
	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
723
	ret = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
724
	if (ret < 0) {
C
Christoph Hellwig 已提交
725
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
726 727 728 729 730 731
			  get_cmd_string(cmd->id), ret);
		return ret;
	}
	return 0;
}

C
Christoph Hellwig 已提交
732
static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753
{
	int cmd_idx;
	int ret;
	static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */

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

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

	if (atomic_xchg(&entry, 1)) {
		IWL_ERROR("Error sending %s: Already sending a host command\n",
			  get_cmd_string(cmd->id));
		return -EBUSY;
	}

	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
754
	cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Z
Zhu Yi 已提交
755 756
	if (cmd_idx < 0) {
		ret = cmd_idx;
C
Christoph Hellwig 已提交
757
		IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Z
Zhu Yi 已提交
758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800
			  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
801
		struct iwl3945_cmd *qcmd;
Z
Zhu Yi 已提交
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819

		/* 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:
	atomic_set(&entry, 0);
	return ret;
}

C
Christoph Hellwig 已提交
820
int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
Z
Zhu Yi 已提交
821 822
{
	if (cmd->meta.flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
823
		return iwl3945_send_cmd_async(priv, cmd);
Z
Zhu Yi 已提交
824

C
Christoph Hellwig 已提交
825
	return iwl3945_send_cmd_sync(priv, cmd);
Z
Zhu Yi 已提交
826 827
}

C
Christoph Hellwig 已提交
828
int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
Z
Zhu Yi 已提交
829
{
C
Christoph Hellwig 已提交
830
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
831 832 833 834 835
		.id = id,
		.len = len,
		.data = data,
	};

C
Christoph Hellwig 已提交
836
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
837 838
}

C
Christoph Hellwig 已提交
839
static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
Z
Zhu Yi 已提交
840
{
C
Christoph Hellwig 已提交
841
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
842 843 844 845 846
		.id = id,
		.len = sizeof(val),
		.data = &val,
	};

C
Christoph Hellwig 已提交
847
	return iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
848 849
}

C
Christoph Hellwig 已提交
850
int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
851
{
C
Christoph Hellwig 已提交
852
	return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Z
Zhu Yi 已提交
853 854 855
}

/**
C
Christoph Hellwig 已提交
856
 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
857 858
 * @band: 2.4 or 5 GHz band
 * @channel: Any channel valid for the requested band
Z
Zhu Yi 已提交
859

860
 * In addition to setting the staging RXON, priv->band is also set.
Z
Zhu Yi 已提交
861 862
 *
 * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
863
 * in the staging RXON flag structure based on the band
Z
Zhu Yi 已提交
864
 */
865 866 867
static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
				    enum ieee80211_band band,
				    u16 channel)
Z
Zhu Yi 已提交
868
{
869
	if (!iwl3945_get_channel_info(priv, band, channel)) {
Z
Zhu Yi 已提交
870
		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
871
			       channel, band);
Z
Zhu Yi 已提交
872 873 874 875
		return -EINVAL;
	}

	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
876
	    (priv->band == band))
Z
Zhu Yi 已提交
877 878 879
		return 0;

	priv->staging_rxon.channel = cpu_to_le16(channel);
880
	if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
881 882 883 884
		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
	else
		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;

885
	priv->band = band;
Z
Zhu Yi 已提交
886

887
	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Z
Zhu Yi 已提交
888 889 890 891 892

	return 0;
}

/**
C
Christoph Hellwig 已提交
893
 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Z
Zhu Yi 已提交
894 895 896 897 898
 *
 * 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
899
static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964
{
	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
965
		IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
Z
Zhu Yi 已提交
966 967 968 969 970 971
		return -1;
	}
	return 0;
}

/**
972
 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
973
 * @priv: staging_rxon is compared to active_rxon
Z
Zhu Yi 已提交
974
 *
975 976 977
 * 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
978
 */
C
Christoph Hellwig 已提交
979
static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
{

	/* 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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static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
Z
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{
	int rc = 0;
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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;
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	if ((rxon1->flags == rxon2->flags) &&
	    (rxon1->filter_flags == rxon2->filter_flags) &&
	    (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
	    (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
		IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
		return 0;
	}

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

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

C
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	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
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	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
		rc = -EIO;
	}

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

	return rc;
}

/**
C
Christoph Hellwig 已提交
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 * iwl3945_commit_rxon - commit staging_rxon to hardware
Z
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 *
1061
 * 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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{
	/* cast away the const for active_rxon in this function */
C
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	struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
Z
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	int rc = 0;
1071
	DECLARE_MAC_BUF(mac);
Z
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C
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	if (!iwl3945_is_alive(priv))
Z
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		return -1;

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

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

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	rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
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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
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	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
Z
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	 * and other flags for the current radio configuration. */
C
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	if (!iwl3945_full_rxon_required(priv)) {
		rc = iwl3945_send_rxon_assoc(priv);
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		if (rc) {
			IWL_ERROR("Error setting RXON_ASSOC "
				  "configuration (%d).\n", rc);
			return rc;
		}

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

		return 0;
	}

	/* If we are currently associated and the new config requires
	 * an RXON_ASSOC and the new config wants the associated mask enabled,
	 * we must clear the associated from the active configuration
	 * before we apply the new config */
C
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	if (iwl3945_is_associated(priv) &&
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	    (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
		IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;

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

		/* If the mask clearing failed then we set
		 * active_rxon back to what it was previously */
		if (rc) {
			active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
			IWL_ERROR("Error clearing ASSOC_MSK on current "
				  "configuration (%d).\n", rc);
			return rc;
		}
	}

	IWL_DEBUG_INFO("Sending RXON\n"
		       "* with%s RXON_FILTER_ASSOC_MSK\n"
		       "* channel = %d\n"
1132
		       "* bssid = %s\n",
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		       ((priv->staging_rxon.filter_flags &
			 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
		       le16_to_cpu(priv->staging_rxon.channel),
1136
		       print_mac(mac, priv->staging_rxon.bssid_addr));
Z
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1137 1138

	/* Apply the new configuration */
C
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	rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
			      sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
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	if (rc) {
		IWL_ERROR("Error setting new configuration (%d).\n", rc);
		return rc;
	}

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

C
Christoph Hellwig 已提交
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	iwl3945_clear_stations_table(priv);
1149

Z
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	/* If we issue a new RXON command which required a tune then we must
	 * send a new TXPOWER command or we won't be able to Tx any frames */
C
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	rc = iwl3945_hw_reg_send_txpower(priv);
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	if (rc) {
		IWL_ERROR("Error setting Tx power (%d).\n", rc);
		return rc;
	}

	/* Add the broadcast address so we can send broadcast frames */
C
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	if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
Z
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	    IWL_INVALID_STATION) {
		IWL_ERROR("Error adding BROADCAST address for transmit.\n");
		return -EIO;
	}

	/* If we have set the ASSOC_MSK and we are in BSS mode then
	 * add the IWL_AP_ID to the station rate table */
C
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	if (iwl3945_is_associated(priv) &&
Z
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	    (priv->iw_mode == IEEE80211_IF_TYPE_STA))
C
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		if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
Z
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		    == IWL_INVALID_STATION) {
			IWL_ERROR("Error adding AP address for transmit.\n");
			return -EIO;
		}

1175
	/* Init the hardware's rate fallback order based on the band */
Z
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	rc = iwl3945_init_hw_rate_table(priv);
	if (rc) {
		IWL_ERROR("Error setting HW rate table: %02X\n", rc);
		return -EIO;
	}

	return 0;
}

C
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1185
static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
Z
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1186
{
C
Christoph Hellwig 已提交
1187
	struct iwl3945_bt_cmd bt_cmd = {
Z
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		.flags = 3,
		.lead_time = 0xAA,
		.max_kill = 1,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

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

C
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1199
static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
Z
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{
	int rc = 0;
C
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	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
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		.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
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	rc = iwl3945_send_cmd_sync(priv, &cmd);
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	if (rc) {
		clear_bit(STATUS_SCAN_ABORTING, &priv->status);
		return rc;
	}

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->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
1240 1241
static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
					struct iwl3945_cmd *cmd,
Z
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1242 1243 1244 1245 1246 1247 1248 1249
					struct sk_buff *skb)
{
	return 1;
}

/*
 * CARD_STATE_CMD
 *
1250
 * Use: Sets the device's internal card state to enable, disable, or halt
Z
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1251 1252 1253 1254 1255 1256
 *
 * When in the 'enable' state the card operates as normal.
 * When in the 'disable' state, the card enters into a low power mode.
 * When in the 'halt' state, the card is shut down and must be fully
 * restarted to come back on.
 */
C
Christoph Hellwig 已提交
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static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
Z
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1258
{
C
Christoph Hellwig 已提交
1259
	struct iwl3945_host_cmd cmd = {
Z
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1260 1261 1262 1263 1264 1265 1266
		.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
1267
		cmd.meta.u.callback = iwl3945_card_state_sync_callback;
Z
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1268

C
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1269
	return iwl3945_send_cmd(priv, &cmd);
Z
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1270 1271
}

C
Christoph Hellwig 已提交
1272 1273
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
1274
{
C
Christoph Hellwig 已提交
1275
	struct iwl3945_rx_packet *res = NULL;
Z
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1276 1277 1278 1279 1280 1281

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

C
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	res = (struct iwl3945_rx_packet *)skb->data;
Z
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	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
			  res->hdr.flags);
		return 1;
	}

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

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

C
Christoph Hellwig 已提交
1300 1301
int iwl3945_send_add_station(struct iwl3945_priv *priv,
			 struct iwl3945_addsta_cmd *sta, u8 flags)
Z
Zhu Yi 已提交
1302
{
C
Christoph Hellwig 已提交
1303
	struct iwl3945_rx_packet *res = NULL;
Z
Zhu Yi 已提交
1304
	int rc = 0;
C
Christoph Hellwig 已提交
1305
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
1306
		.id = REPLY_ADD_STA,
C
Christoph Hellwig 已提交
1307
		.len = sizeof(struct iwl3945_addsta_cmd),
Z
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1308 1309 1310 1311 1312
		.meta.flags = flags,
		.data = sta,
	};

	if (flags & CMD_ASYNC)
C
Christoph Hellwig 已提交
1313
		cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Z
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1314 1315 1316
	else
		cmd.meta.flags |= CMD_WANT_SKB;

C
Christoph Hellwig 已提交
1317
	rc = iwl3945_send_cmd(priv, &cmd);
Z
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1318 1319 1320 1321

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

C
Christoph Hellwig 已提交
1322
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
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1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
	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
1347
static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
Z
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1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
				   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
1381
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1382 1383 1384
	return 0;
}

C
Christoph Hellwig 已提交
1385
static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
Z
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1386 1387 1388 1389
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
C
Christoph Hellwig 已提交
1390 1391
	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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	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
1398
	iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
Z
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1399 1400 1401
	return 0;
}

C
Christoph Hellwig 已提交
1402
static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
Z
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1403 1404 1405 1406 1407 1408 1409 1410 1411
{
	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
1412
		kfree(list_entry(element, struct iwl3945_frame, list));
Z
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1413 1414 1415 1416 1417 1418 1419 1420 1421 1422
		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
1423
static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1424
{
C
Christoph Hellwig 已提交
1425
	struct iwl3945_frame *frame;
Z
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1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
	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
1440
	return list_entry(element, struct iwl3945_frame, list);
Z
Zhu Yi 已提交
1441 1442
}

C
Christoph Hellwig 已提交
1443
static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
Z
Zhu Yi 已提交
1444 1445 1446 1447 1448
{
	memset(frame, 0, sizeof(*frame));
	list_add(&frame->list, &priv->free_frames);
}

C
Christoph Hellwig 已提交
1449
unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
Z
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1450 1451 1452 1453
				struct ieee80211_hdr *hdr,
				const u8 *dest, int left)
{

C
Christoph Hellwig 已提交
1454
	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
Z
Zhu Yi 已提交
1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466
	    ((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
1467
static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
Z
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1468 1469 1470 1471
{
	u8 i;

	for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
C
Christoph Hellwig 已提交
1472
	     i = iwl3945_rates[i].next_ieee) {
Z
Zhu Yi 已提交
1473
		if (rate_mask & (1 << i))
C
Christoph Hellwig 已提交
1474
			return iwl3945_rates[i].plcp;
Z
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1475 1476 1477 1478 1479
	}

	return IWL_RATE_INVALID;
}

C
Christoph Hellwig 已提交
1480
static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1481
{
C
Christoph Hellwig 已提交
1482
	struct iwl3945_frame *frame;
Z
Zhu Yi 已提交
1483 1484 1485 1486
	unsigned int frame_size;
	int rc;
	u8 rate;

C
Christoph Hellwig 已提交
1487
	frame = iwl3945_get_free_frame(priv);
Z
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1488 1489 1490 1491 1492 1493 1494 1495

	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
1496
		rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
Z
Zhu Yi 已提交
1497 1498 1499 1500
						0xFF0);
		if (rate == IWL_INVALID_RATE)
			rate = IWL_RATE_6M_PLCP;
	} else {
C
Christoph Hellwig 已提交
1501
		rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
Z
Zhu Yi 已提交
1502 1503 1504 1505
		if (rate == IWL_INVALID_RATE)
			rate = IWL_RATE_1M_PLCP;
	}

C
Christoph Hellwig 已提交
1506
	frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Z
Zhu Yi 已提交
1507

C
Christoph Hellwig 已提交
1508
	rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Z
Zhu Yi 已提交
1509 1510
			      &frame->u.cmd[0]);

C
Christoph Hellwig 已提交
1511
	iwl3945_free_frame(priv, frame);
Z
Zhu Yi 已提交
1512 1513 1514 1515 1516 1517 1518 1519 1520 1521

	return rc;
}

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

C
Christoph Hellwig 已提交
1522
static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
Z
Zhu Yi 已提交
1523 1524 1525 1526
{
	memcpy(mac, priv->eeprom.mac_address, 6);
}

1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
/*
 * 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
1541
/**
C
Christoph Hellwig 已提交
1542
 * iwl3945_eeprom_init - read EEPROM contents
Z
Zhu Yi 已提交
1543
 *
1544
 * Load the EEPROM contents from adapter into priv->eeprom
Z
Zhu Yi 已提交
1545 1546 1547
 *
 * NOTE:  This routine uses the non-debug IO access functions.
 */
C
Christoph Hellwig 已提交
1548
int iwl3945_eeprom_init(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1549
{
1550
	u16 *e = (u16 *)&priv->eeprom;
C
Christoph Hellwig 已提交
1551
	u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
Z
Zhu Yi 已提交
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568
	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;
	}

1569
	/* Make sure driver (instead of uCode) is allowed to read EEPROM */
C
Christoph Hellwig 已提交
1570
	rc = iwl3945_eeprom_acquire_semaphore(priv);
Z
Zhu Yi 已提交
1571
	if (rc < 0) {
1572
		IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
Z
Zhu Yi 已提交
1573 1574 1575 1576 1577
		return -ENOENT;
	}

	/* eeprom is an array of 16bit values */
	for (addr = 0; addr < sz; addr += sizeof(u16)) {
C
Christoph Hellwig 已提交
1578 1579
		_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
1580 1581 1582

		for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
					i += IWL_EEPROM_ACCESS_DELAY) {
C
Christoph Hellwig 已提交
1583
			r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
Z
Zhu Yi 已提交
1584 1585 1586 1587 1588 1589 1590 1591 1592
			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;
		}
1593
		e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
Z
Zhu Yi 已提交
1594 1595 1596 1597 1598
	}

	return 0;
}

C
Christoph Hellwig 已提交
1599
static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1600 1601 1602
{
	if (priv->hw_setting.shared_virt)
		pci_free_consistent(priv->pci_dev,
C
Christoph Hellwig 已提交
1603
				    sizeof(struct iwl3945_shared),
Z
Zhu Yi 已提交
1604 1605 1606 1607 1608
				    priv->hw_setting.shared_virt,
				    priv->hw_setting.shared_phys);
}

/**
C
Christoph Hellwig 已提交
1609
 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Z
Zhu Yi 已提交
1610 1611 1612
 *
 * return : set the bit for each supported rate insert in ie
 */
C
Christoph Hellwig 已提交
1613
static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1614
				    u16 basic_rate, int *left)
Z
Zhu Yi 已提交
1615 1616 1617
{
	u16 ret_rates = 0, bit;
	int i;
1618 1619
	u8 *cnt = ie;
	u8 *rates = ie + 1;
Z
Zhu Yi 已提交
1620 1621 1622 1623

	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
1624
			rates[*cnt] = iwl3945_rates[i].ieee |
1625 1626 1627 1628 1629
				((bit & basic_rate) ? 0x80 : 0x00);
			(*cnt)++;
			(*left)--;
			if ((*left <= 0) ||
			    (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
Z
Zhu Yi 已提交
1630 1631 1632 1633 1634 1635 1636 1637
				break;
		}
	}

	return ret_rates;
}

/**
C
Christoph Hellwig 已提交
1638
 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Z
Zhu Yi 已提交
1639
 */
C
Christoph Hellwig 已提交
1640
static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
1641 1642 1643 1644 1645
			      struct ieee80211_mgmt *frame,
			      int left, int is_direct)
{
	int len = 0;
	u8 *pos = NULL;
1646
	u16 active_rates, ret_rates, cck_rates;
Z
Zhu Yi 已提交
1647 1648 1649 1650 1651 1652 1653 1654 1655

	/* 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
1656
	memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
Z
Zhu Yi 已提交
1657
	memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
C
Christoph Hellwig 已提交
1658
	memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
Z
Zhu Yi 已提交
1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
	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;
1691

Z
Zhu Yi 已提交
1692 1693 1694
	/* ... fill it in... */
	*pos++ = WLAN_EID_SUPP_RATES;
	*pos = 0;
1695 1696 1697

	priv->active_rate = priv->rates_mask;
	active_rates = priv->active_rate;
Z
Zhu Yi 已提交
1698 1699
	priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;

1700
	cck_rates = IWL_CCK_RATES_MASK & active_rates;
C
Christoph Hellwig 已提交
1701
	ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1702 1703 1704
			priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

C
Christoph Hellwig 已提交
1705
	ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1706 1707 1708
				 priv->active_rate_basic, &left);
	active_rates &= ~ret_rates;

Z
Zhu Yi 已提交
1709 1710
	len += 2 + *pos;
	pos += (*pos) + 1;
1711
	if (active_rates == 0)
Z
Zhu Yi 已提交
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721
		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
1722
	iwl3945_supported_rate_to_ie(pos, active_rates,
1723
				 priv->active_rate_basic, &left);
Z
Zhu Yi 已提交
1724 1725 1726 1727 1728 1729 1730 1731 1732 1733
	if (*pos > 0)
		len += 2 + *pos;

 fill_end:
	return (u16)len;
}

/*
 * QoS  support
*/
C
Christoph Hellwig 已提交
1734 1735
static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
				       struct iwl3945_qosparam_cmd *qos)
Z
Zhu Yi 已提交
1736 1737
{

C
Christoph Hellwig 已提交
1738 1739
	return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
				sizeof(struct iwl3945_qosparam_cmd), qos);
Z
Zhu Yi 已提交
1740 1741
}

C
Christoph Hellwig 已提交
1742
static void iwl3945_reset_qos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
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 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
{
	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
1829
static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
Z
Zhu Yi 已提交
1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852
{
	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
1853
	if (force || iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
1854 1855 1856
		IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
			      priv->qos_data.qos_active);

C
Christoph Hellwig 已提交
1857
		iwl3945_send_qos_params_command(priv,
Z
Zhu Yi 已提交
1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
				&(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
1879
static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1880 1881 1882 1883 1884 1885 1886 1887 1888
	{{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
1889
static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
Z
Zhu Yi 已提交
1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901
	{{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
1902
int iwl3945_power_init_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
1903 1904
{
	int rc = 0, i;
C
Christoph Hellwig 已提交
1905 1906
	struct iwl3945_power_mgr *pow_data;
	int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
Z
Zhu Yi 已提交
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
	u16 pci_pm;

	IWL_DEBUG_POWER("Initialize power \n");

	pow_data = &(priv->power_data);

	memset(pow_data, 0, sizeof(*pow_data));

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

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

	rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
	if (rc != 0)
		return 0;
	else {
C
Christoph Hellwig 已提交
1925
		struct iwl3945_powertable_cmd *cmd;
Z
Zhu Yi 已提交
1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940

		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
1941 1942
static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
				struct iwl3945_powertable_cmd *cmd, u32 mode)
Z
Zhu Yi 已提交
1943 1944 1945 1946
{
	int rc = 0, i;
	u8 skip;
	u32 max_sleep = 0;
C
Christoph Hellwig 已提交
1947
	struct iwl3945_power_vec_entry *range;
Z
Zhu Yi 已提交
1948
	u8 period = 0;
C
Christoph Hellwig 已提交
1949
	struct iwl3945_power_mgr *pow_data;
Z
Zhu Yi 已提交
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961

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

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

C
Christoph Hellwig 已提交
1962
	memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
Z
Zhu Yi 已提交
1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

#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
2005
static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
Z
Zhu Yi 已提交
2006
{
2007
	u32 uninitialized_var(final_mode);
Z
Zhu Yi 已提交
2008
	int rc;
C
Christoph Hellwig 已提交
2009
	struct iwl3945_powertable_cmd cmd;
Z
Zhu Yi 已提交
2010 2011

	/* If on battery, set to 3,
2012
	 * if plugged into AC power, set to CAM ("continuously aware mode"),
Z
Zhu Yi 已提交
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
	 * 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
2026
	iwl3945_update_power_cmd(priv, &cmd, final_mode);
Z
Zhu Yi 已提交
2027

C
Christoph Hellwig 已提交
2028
	rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
Z
Zhu Yi 已提交
2029 2030 2031 2032 2033 2034 2035 2036 2037

	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
2038
int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
Z
Zhu Yi 已提交
2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066
{
	/* 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);
	}

	return 1;
}

/**
C
Christoph Hellwig 已提交
2067
 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
2068 2069 2070
 *
 * NOTE: priv->mutex is not required before calling this function
 */
C
Christoph Hellwig 已提交
2071
static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093
{
	if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
		clear_bit(STATUS_SCANNING, &priv->status);
		return 0;
	}

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

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

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

	return 0;
}

/**
C
Christoph Hellwig 已提交
2094
 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Z
Zhu Yi 已提交
2095 2096 2097 2098
 * @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
2099
static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
Z
Zhu Yi 已提交
2100 2101 2102 2103
{
	unsigned long now = jiffies;
	int ret;

C
Christoph Hellwig 已提交
2104
	ret = iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117
	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
2118
static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2119 2120 2121 2122 2123 2124 2125 2126 2127 2128
{
	/* 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;

C
Christoph Hellwig 已提交
2129
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2130 2131 2132 2133 2134
}

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

C
Christoph Hellwig 已提交
2135
static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
Z
Zhu Yi 已提交
2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147
{
	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
2148
static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177
{
	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
2178
			    iwl3945_adjust_beacon_interval(
Z
Zhu Yi 已提交
2179 2180 2181 2182 2183 2184
				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
2185
			iwl3945_adjust_beacon_interval(conf->beacon_int);
Z
Zhu Yi 已提交
2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
		/* 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
2204
static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2205 2206 2207 2208 2209 2210
{
	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		IWL_ERROR("APs don't scan.\n");
		return 0;
	}

C
Christoph Hellwig 已提交
2211
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237
		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");
	priv->scan_bands = 2;
	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
2238
static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
Z
Zhu Yi 已提交
2239
{
C
Christoph Hellwig 已提交
2240
	struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
Z
Zhu Yi 已提交
2241 2242 2243 2244 2245 2246 2247 2248 2249

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

	return 0;
}

2250 2251
static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
2252
{
2253
	if (band == IEEE80211_BAND_5GHZ) {
Z
Zhu Yi 已提交
2254 2255 2256 2257 2258
		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
2259
		/* Copied from iwl3945_bg_post_associate() */
Z
Zhu Yi 已提交
2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274
		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;
	}
}

/*
2275
 * initialize rxon structure with default values from eeprom
Z
Zhu Yi 已提交
2276
 */
C
Christoph Hellwig 已提交
2277
static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2278
{
C
Christoph Hellwig 已提交
2279
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315

	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;
	}

#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

2316
	ch_info = iwl3945_get_channel_info(priv, priv->band,
Z
Zhu Yi 已提交
2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331
				       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))
2332
		priv->band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
2333
	else
2334
		priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
2335

2336
	iwl3945_set_flags_for_phymode(priv, priv->band);
Z
Zhu Yi 已提交
2337 2338 2339 2340 2341 2342 2343

	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
2344
static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
Z
Zhu Yi 已提交
2345 2346
{
	if (mode == IEEE80211_IF_TYPE_IBSS) {
C
Christoph Hellwig 已提交
2347
		const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
2348

C
Christoph Hellwig 已提交
2349
		ch_info = iwl3945_get_channel_info(priv,
2350
			priv->band,
Z
Zhu Yi 已提交
2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361
			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
2362
	iwl3945_connection_init_rx_config(priv);
Z
Zhu Yi 已提交
2363 2364
	memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);

C
Christoph Hellwig 已提交
2365
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
2366

2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377
	/* 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
2378
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
2379 2380 2381 2382

	return 0;
}

C
Christoph Hellwig 已提交
2383
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
2384
				      struct ieee80211_tx_control *ctl,
C
Christoph Hellwig 已提交
2385
				      struct iwl3945_cmd *cmd,
Z
Zhu Yi 已提交
2386 2387 2388
				      struct sk_buff *skb_frag,
				      int last_frag)
{
C
Christoph Hellwig 已提交
2389
	struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
Z
Zhu Yi 已提交
2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431

	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 |
		    (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;

		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 "
			     "with key %d\n", ctl->key_idx);
		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
2432 2433
static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
				  struct iwl3945_cmd *cmd,
Z
Zhu Yi 已提交
2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480
				  struct ieee80211_tx_control *ctrl,
				  struct ieee80211_hdr *hdr,
				  int is_unicast, u8 std_id)
{
	__le16 *qc;
	u16 fc = le16_to_cpu(hdr->frame_control);
	__le32 tx_flags = cmd->cmd.tx.tx_flags;

	cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
	if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
		tx_flags |= TX_CMD_FLG_ACK_MSK;
		if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
			tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
		if (ieee80211_is_probe_response(fc) &&
		    !(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;
	if (ieee80211_get_morefrag(hdr))
		tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;

	qc = ieee80211_get_qos_ctrl(hdr);
	if (qc) {
		cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
		tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
	} else
		tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;

	if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
		tx_flags |= TX_CMD_FLG_RTS_MSK;
		tx_flags &= ~TX_CMD_FLG_CTS_MSK;
	} else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
		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);
	if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
		if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
		    (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2481
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
Z
Zhu Yi 已提交
2482
		else
2483
			cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
M
Mohamed Abbas 已提交
2484
	} else {
Z
Zhu Yi 已提交
2485
		cmd->cmd.tx.timeout.pm_frame_timeout = 0;
M
Mohamed Abbas 已提交
2486 2487 2488 2489
#ifdef CONFIG_IWL3945_LEDS
		priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
#endif
	}
Z
Zhu Yi 已提交
2490 2491 2492 2493 2494 2495

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

2496 2497 2498
/**
 * iwl3945_get_sta_id - Find station's index within station table
 */
C
Christoph Hellwig 已提交
2499
static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
Z
Zhu Yi 已提交
2500 2501 2502 2503
{
	int sta_id;
	u16 fc = le16_to_cpu(hdr->frame_control);

2504
	/* If this frame is broadcast or management, use broadcast station id */
Z
Zhu Yi 已提交
2505 2506 2507 2508 2509 2510
	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) {

2511 2512
	/* 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
2513 2514 2515 2516 2517
	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
2518
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2519 2520 2521 2522
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
		return priv->hw_setting.bcast_sta_id;

2523 2524
	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
2525 2526 2527
	case IEEE80211_IF_TYPE_IBSS: {
		DECLARE_MAC_BUF(mac);

2528
		/* Create new station table entry */
C
Christoph Hellwig 已提交
2529
		sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Z
Zhu Yi 已提交
2530 2531 2532
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

C
Christoph Hellwig 已提交
2533
		sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Z
Zhu Yi 已提交
2534 2535 2536 2537

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

2538
		IWL_DEBUG_DROP("Station %s not in station map. "
Z
Zhu Yi 已提交
2539
			       "Defaulting to broadcast...\n",
2540
			       print_mac(mac, hdr->addr1));
C
Christoph Hellwig 已提交
2541
		iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Z
Zhu Yi 已提交
2542
		return priv->hw_setting.bcast_sta_id;
2543
	}
Z
Zhu Yi 已提交
2544
	default:
2545
		IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
Z
Zhu Yi 已提交
2546 2547 2548 2549 2550 2551 2552
		return priv->hw_setting.bcast_sta_id;
	}
}

/*
 * start REPLY_TX command process
 */
C
Christoph Hellwig 已提交
2553
static int iwl3945_tx_skb(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
2554 2555 2556
		      struct sk_buff *skb, struct ieee80211_tx_control *ctl)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
C
Christoph Hellwig 已提交
2557
	struct iwl3945_tfd_frame *tfd;
Z
Zhu Yi 已提交
2558 2559
	u32 *control_flags;
	int txq_id = ctl->queue;
C
Christoph Hellwig 已提交
2560 2561
	struct iwl3945_tx_queue *txq = NULL;
	struct iwl3945_queue *q = NULL;
Z
Zhu Yi 已提交
2562 2563
	dma_addr_t phys_addr;
	dma_addr_t txcmd_phys;
C
Christoph Hellwig 已提交
2564
	struct iwl3945_cmd *out_cmd = NULL;
Z
Zhu Yi 已提交
2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575
	u16 len, idx, len_org;
	u8 id, hdr_len, unicast;
	u8 sta_id;
	u16 seq_number = 0;
	u16 fc;
	__le16 *qc;
	u8 wait_write_ptr = 0;
	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 ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
Z
Zhu Yi 已提交
2587 2588 2589 2590 2591 2592 2593 2594 2595
		IWL_ERROR("ERROR: No TX rate available.\n");
		goto drop_unlock;
	}

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

	fc = le16_to_cpu(hdr->frame_control);

2596
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
2597 2598 2599 2600 2601 2602 2603 2604
	if (ieee80211_is_auth(fc))
		IWL_DEBUG_TX("Sending AUTH frame\n");
	else if (ieee80211_is_assoc_request(fc))
		IWL_DEBUG_TX("Sending ASSOC frame\n");
	else if (ieee80211_is_reassoc_request(fc))
		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)) &&
Z
Zhu Yi 已提交
2608
	    ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
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 2615
		goto drop_unlock;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

	hdr_len = ieee80211_get_hdrlen(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 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638
		goto drop;
	}

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

	qc = ieee80211_get_qos_ctrl(hdr);
	if (qc) {
		u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
		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 2655
	txq->txb[q->write_ptr].skb[0] = skb;
	memcpy(&(txq->txb[q->write_ptr].status.control),
Z
Zhu Yi 已提交
2656
	       ctl, sizeof(struct ieee80211_tx_control));
2657 2658

	/* Init first empty entry in queue's array of Tx/cmd buffers */
Z
Zhu Yi 已提交
2659 2660 2661
	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));
2662 2663 2664 2665 2666 2667 2668

	/*
	 * 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
2669 2670
	out_cmd->hdr.cmd = REPLY_TX;
	out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2671
				INDEX_TO_SEQ(q->write_ptr)));
2672 2673

	/* Copy MAC header from skb into command buffer */
Z
Zhu Yi 已提交
2674 2675
	memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);

2676 2677 2678 2679 2680 2681 2682 2683 2684
	/*
	 * 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
2685
	len = priv->hw_setting.tx_cmd_len +
C
Christoph Hellwig 已提交
2686
		sizeof(struct iwl3945_cmd_header) + hdr_len;
Z
Zhu Yi 已提交
2687 2688 2689 2690 2691 2692 2693 2694 2695

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

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

2696 2697
	/* Physical address of this Tx command's header (not MAC header!),
	 * within command buffer array. */
C
Christoph Hellwig 已提交
2698 2699
	txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
		     offsetof(struct iwl3945_cmd, hdr);
Z
Zhu Yi 已提交
2700

2701 2702
	/* Add buffer containing Tx command and MAC(!) header to TFD's
	 * first entry */
C
Christoph Hellwig 已提交
2703
	iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Z
Zhu Yi 已提交
2704 2705

	if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
C
Christoph Hellwig 已提交
2706
		iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
Z
Zhu Yi 已提交
2707

2708 2709
	/* 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
2710 2711 2712 2713
	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
2714
		iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Z
Zhu Yi 已提交
2715 2716 2717
	}

	if (!len)
2718
		/* If there is no payload, then we use only one Tx buffer */
Z
Zhu Yi 已提交
2719 2720
		*control_flags = TFD_CTL_COUNT_SET(1);
	else
2721 2722
		/* Else use 2 buffers.
		 * Tell 3945 about any padding after MAC header */
Z
Zhu Yi 已提交
2723 2724 2725
		*control_flags = TFD_CTL_COUNT_SET(2) |
			TFD_CTL_PAD_SET(U32_PAD(len));

2726
	/* Total # bytes to be transmitted */
Z
Zhu Yi 已提交
2727 2728 2729 2730
	len = (u16)skb->len;
	out_cmd->cmd.tx.len = cpu_to_le16(len);

	/* TODO need this for burst mode later on */
C
Christoph Hellwig 已提交
2731
	iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
Z
Zhu Yi 已提交
2732 2733

	/* set is_hcca to 0; it probably will never be implemented */
C
Christoph Hellwig 已提交
2734
	iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
Z
Zhu Yi 已提交
2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749

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

	if (!ieee80211_get_morefrag(hdr)) {
		txq->need_update = 1;
		if (qc) {
			u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
			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
2750
	iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
Z
Zhu Yi 已提交
2751 2752
			   sizeof(out_cmd->cmd.tx));

C
Christoph Hellwig 已提交
2753
	iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
Z
Zhu Yi 已提交
2754 2755
			   ieee80211_get_hdrlen(fc));

2756
	/* Tell device the write index *just past* this latest filled TFD */
T
Tomas Winkler 已提交
2757
	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
C
Christoph Hellwig 已提交
2758
	rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2759 2760 2761 2762 2763
	spin_unlock_irqrestore(&priv->lock, flags);

	if (rc)
		return rc;

C
Christoph Hellwig 已提交
2764
	if ((iwl3945_queue_space(q) < q->high_mark)
Z
Zhu Yi 已提交
2765 2766 2767 2768
	    && priv->mac80211_registered) {
		if (wait_write_ptr) {
			spin_lock_irqsave(&priv->lock, flags);
			txq->need_update = 1;
C
Christoph Hellwig 已提交
2769
			iwl3945_tx_queue_update_write_ptr(priv, txq);
Z
Zhu Yi 已提交
2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783
			spin_unlock_irqrestore(&priv->lock, flags);
		}

		ieee80211_stop_queue(priv->hw, ctl->queue);
	}

	return 0;

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

C
Christoph Hellwig 已提交
2784
static void iwl3945_set_rate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
2785
{
2786
	const struct ieee80211_supported_band *sband = NULL;
Z
Zhu Yi 已提交
2787 2788 2789
	struct ieee80211_rate *rate;
	int i;

2790 2791
	sband = iwl3945_get_band(priv, priv->band);
	if (!sband) {
2792 2793 2794
		IWL_ERROR("Failed to set rate: unable to get hw mode\n");
		return;
	}
Z
Zhu Yi 已提交
2795 2796 2797 2798

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

2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809
	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
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 2835 2836 2837
	}

	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
2838
static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
Z
Zhu Yi 已提交
2839 2840 2841 2842 2843 2844 2845 2846 2847 2848
{
	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
2849
		iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
2850 2851 2852
		/* 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
2853
			iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
2854 2855
				    CSR_UCODE_SW_BIT_RFKILL);
			spin_unlock_irqrestore(&priv->lock, flags);
C
Christoph Hellwig 已提交
2856
			iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Z
Zhu Yi 已提交
2857 2858 2859 2860 2861 2862
			set_bit(STATUS_RF_KILL_SW, &priv->status);
		}
		return;
	}

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
2863
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Z
Zhu Yi 已提交
2864 2865 2866 2867 2868 2869 2870 2871

	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
2872 2873 2874
	iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
	if (!iwl3945_grab_nic_access(priv))
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886
	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;
	}

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

C
Christoph Hellwig 已提交
2887
void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
Z
Zhu Yi 已提交
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 2919 2920
			    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
2921
int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
Z
Zhu Yi 已提交
2922 2923 2924 2925 2926 2927 2928 2929 2930 2931
{
	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
2932
		struct iwl3945_ibss_seq *entry = NULL;
Z
Zhu Yi 已提交
2933 2934 2935 2936
		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
2937
			entry = list_entry(p, struct iwl3945_ibss_seq, list);
Z
Zhu Yi 已提交
2938 2939 2940 2941 2942 2943
			if (!compare_ether_addr(entry->mac, mac))
				break;
		}
		if (p == &priv->ibss_mac_hash[index]) {
			entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
			if (!entry) {
2944
				IWL_ERROR("Cannot malloc new mac entry\n");
Z
Zhu Yi 已提交
2945 2946 2947 2948 2949 2950
				return 0;
			}
			memcpy(entry->mac, mac, ETH_ALEN);
			entry->seq_num = seq;
			entry->frag_num = frag;
			entry->packet_time = jiffies;
2951
			list_add(&entry->list, &priv->ibss_mac_hash[index]);
Z
Zhu Yi 已提交
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 2983 2984
			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;
}

2985
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999

#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
3000
static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Z
Zhu Yi 已提交
3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018
{
	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
3019
static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Z
Zhu Yi 已提交
3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037
{
	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
3038
static int iwl3945_get_measurement(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3039 3040 3041
			       struct ieee80211_measurement_params *params,
			       u8 type)
{
C
Christoph Hellwig 已提交
3042 3043 3044
	struct iwl3945_spectrum_cmd spectrum;
	struct iwl3945_rx_packet *res;
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
3045 3046 3047 3048 3049 3050 3051 3052 3053
		.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
3054
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
3055
		add_time =
C
Christoph Hellwig 已提交
3056
		    iwl3945_usecs_to_beacons(
Z
Zhu Yi 已提交
3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068
			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
3069
	if (iwl3945_is_associated(priv))
Z
Zhu Yi 已提交
3070
		spectrum.start_time =
C
Christoph Hellwig 已提交
3071
		    iwl3945_add_beacon_time(priv->last_beacon_time,
Z
Zhu Yi 已提交
3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083
				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
3084
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
3085 3086 3087
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
3088
	res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
Z
Zhu Yi 已提交
3089 3090 3091 3092 3093 3094 3095 3096 3097
	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) {
3098 3099
			IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
						res->u.spectrum.id);
Z
Zhu Yi 已提交
3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116
			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
3117 3118
static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3119
{
C
Christoph Hellwig 已提交
3120 3121
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_alive_resp *palive;
Z
Zhu Yi 已提交
3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134
	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
3135
		       sizeof(struct iwl3945_init_alive_resp));
Z
Zhu Yi 已提交
3136 3137 3138 3139
		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
3140
		       sizeof(struct iwl3945_alive_resp));
Z
Zhu Yi 已提交
3141
		pwork = &priv->alive_start;
C
Christoph Hellwig 已提交
3142
		iwl3945_disable_events(priv);
Z
Zhu Yi 已提交
3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153
	}

	/* 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
3154 3155
static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
				 struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3156
{
C
Christoph Hellwig 已提交
3157
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3158 3159 3160 3161 3162

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

C
Christoph Hellwig 已提交
3163 3164
static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
			       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3165
{
C
Christoph Hellwig 已提交
3166
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178

	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
3179
static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3180
{
C
Christoph Hellwig 已提交
3181 3182 3183
	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
3184 3185 3186 3187 3188 3189
	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
3190 3191
static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
					  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3192
{
3193
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
C
Christoph Hellwig 已提交
3194 3195
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
Z
Zhu Yi 已提交
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207

	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
3208 3209
static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
				  struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3210
{
3211
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3212 3213
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
Z
Zhu Yi 已提交
3214 3215 3216 3217 3218
	IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
#endif
}

C
Christoph Hellwig 已提交
3219 3220
static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
					     struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3221
{
C
Christoph Hellwig 已提交
3222
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3223 3224 3225
	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
3226
	iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
Z
Zhu Yi 已提交
3227 3228
}

C
Christoph Hellwig 已提交
3229
static void iwl3945_bg_beacon_update(struct work_struct *work)
Z
Zhu Yi 已提交
3230
{
C
Christoph Hellwig 已提交
3231 3232
	struct iwl3945_priv *priv =
		container_of(work, struct iwl3945_priv, beacon_update);
Z
Zhu Yi 已提交
3233 3234 3235
	struct sk_buff *beacon;

	/* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3236
	beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
Z
Zhu Yi 已提交
3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250

	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
3251
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
3252 3253
}

C
Christoph Hellwig 已提交
3254 3255
static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3256
{
3257
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3258 3259
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
	struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Z
Zhu Yi 已提交
3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276
	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
3277 3278
static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
			      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3279
{
3280
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
3281 3282 3283
	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
3284 3285 3286 3287 3288 3289

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

/* Service SCAN_START_NOTIFICATION (0x82) */
C
Christoph Hellwig 已提交
3290 3291
static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3292
{
C
Christoph Hellwig 已提交
3293 3294 3295
	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
3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306
	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
3307 3308
static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
				      struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3309
{
C
Christoph Hellwig 已提交
3310 3311 3312
	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
3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327

	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;
3328
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3329 3330 3331
}

/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
C
Christoph Hellwig 已提交
3332 3333
static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
				       struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3334
{
C
Christoph Hellwig 已提交
3335 3336
	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
3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370

	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",
		       (priv->scan_bands == 2) ? "2.4" : "5.2",
		       jiffies_to_msecs(elapsed_jiffies
					(priv->scan_pass_start, jiffies)));

	/* Remove this scanned band from the list
	 * of pending bands to scan */
	priv->scan_bands--;

	/* 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;
3371
	priv->next_scan_jiffies = 0;
Z
Zhu Yi 已提交
3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389
	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
3390 3391
static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
				    struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3392
{
C
Christoph Hellwig 已提交
3393
	struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
Z
Zhu Yi 已提交
3394 3395 3396 3397 3398 3399 3400
	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
3401
	iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
Z
Zhu Yi 已提交
3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414
		    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
3415
	iwl3945_scan_cancel(priv);
Z
Zhu Yi 已提交
3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426

	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
3427
 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Z
Zhu Yi 已提交
3428 3429 3430 3431 3432 3433 3434
 *
 * 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
3435
static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3436
{
C
Christoph Hellwig 已提交
3437 3438 3439 3440
	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
3441
	priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3442 3443
	    iwl3945_rx_spectrum_measure_notif;
	priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Z
Zhu Yi 已提交
3444
	priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
C
Christoph Hellwig 已提交
3445 3446
	    iwl3945_rx_pm_debug_statistics_notif;
	priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Z
Zhu Yi 已提交
3447

3448 3449 3450 3451
	/*
	 * 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
3452
	 */
C
Christoph Hellwig 已提交
3453 3454
	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
3455

C
Christoph Hellwig 已提交
3456 3457
	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
3458
	priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
C
Christoph Hellwig 已提交
3459
	    iwl3945_rx_scan_results_notif;
Z
Zhu Yi 已提交
3460
	priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
C
Christoph Hellwig 已提交
3461 3462
	    iwl3945_rx_scan_complete_notif;
	priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Z
Zhu Yi 已提交
3463

3464
	/* Set up hardware specific Rx handlers */
C
Christoph Hellwig 已提交
3465
	iwl3945_hw_rx_handler_setup(priv);
Z
Zhu Yi 已提交
3466 3467
}

3468 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
/**
 * 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
3500
/**
C
Christoph Hellwig 已提交
3501
 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Z
Zhu Yi 已提交
3502 3503 3504 3505 3506 3507
 * @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
3508 3509
static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
				struct iwl3945_rx_mem_buffer *rxb)
Z
Zhu Yi 已提交
3510
{
C
Christoph Hellwig 已提交
3511
	struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
3512 3513 3514 3515 3516
	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
3517
	struct iwl3945_cmd *cmd;
Z
Zhu Yi 已提交
3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531

	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;

3532
	iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Z
Zhu Yi 已提交
3533 3534 3535 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

	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.
 *
3562
 * During initialization, the host sets up the READ queue position to the first
Z
Zhu Yi 已提交
3563 3564
 * INDEX position, and WRITE to the last (READ - 1 wrapped)
 *
3565
 * When the firmware places a packet in a buffer, it will advance the READ index
Z
Zhu Yi 已提交
3566 3567 3568 3569 3570 3571 3572
 * 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
3573
 *   to replenish the iwl->rxq->rx_free.
C
Christoph Hellwig 已提交
3574
 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Z
Zhu Yi 已提交
3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586
 *   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:
 *
3587 3588
 * 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
3589
 *                            iwl3945_rx_queue_restock
3590
 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Z
Zhu Yi 已提交
3591 3592
 *                            queue, updates firmware pointers, and updates
 *                            the WRITE index.  If insufficient rx_free buffers
C
Christoph Hellwig 已提交
3593
 *                            are available, schedules iwl3945_rx_replenish
Z
Zhu Yi 已提交
3594 3595
 *
 * -- enable interrupts --
3596
 * ISR - iwl3945_rx()         Detach iwl3945_rx_mem_buffers from pool up to the
Z
Zhu Yi 已提交
3597 3598
 *                            READ INDEX, detaching the SKB from the pool.
 *                            Moves the packet buffer from queue to rx_used.
C
Christoph Hellwig 已提交
3599
 *                            Calls iwl3945_rx_queue_restock to refill any empty
Z
Zhu Yi 已提交
3600 3601 3602 3603 3604 3605
 *                            slots.
 * ...
 *
 */

/**
C
Christoph Hellwig 已提交
3606
 * iwl3945_rx_queue_space - Return number of free slots available in queue.
Z
Zhu Yi 已提交
3607
 */
C
Christoph Hellwig 已提交
3608
static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620
{
	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
3621
 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
Z
Zhu Yi 已提交
3622
 */
C
Christoph Hellwig 已提交
3623
int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
Z
Zhu Yi 已提交
3624 3625 3626 3627 3628 3629 3630 3631 3632 3633
{
	u32 reg = 0;
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&q->lock, flags);

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

3634
	/* If power-saving is in use, make sure device is awake */
Z
Zhu Yi 已提交
3635
	if (test_bit(STATUS_POWER_PMI, &priv->status)) {
C
Christoph Hellwig 已提交
3636
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
3637 3638

		if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
C
Christoph Hellwig 已提交
3639
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
3640 3641 3642 3643
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			goto exit_unlock;
		}

C
Christoph Hellwig 已提交
3644
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
3645 3646 3647
		if (rc)
			goto exit_unlock;

3648
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3649
		iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
Z
Zhu Yi 已提交
3650
				     q->write & ~0x7);
C
Christoph Hellwig 已提交
3651
		iwl3945_release_nic_access(priv);
3652 3653

	/* Else device is assumed to be awake */
Z
Zhu Yi 已提交
3654
	} else
3655
		/* Device expects a multiple of 8 */
C
Christoph Hellwig 已提交
3656
		iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
Z
Zhu Yi 已提交
3657 3658 3659 3660 3661 3662 3663 3664 3665 3666


	q->need_update = 0;

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

/**
3667
 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Z
Zhu Yi 已提交
3668
 */
C
Christoph Hellwig 已提交
3669
static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
3670 3671 3672 3673 3674 3675
					  dma_addr_t dma_addr)
{
	return cpu_to_le32((u32)dma_addr);
}

/**
C
Christoph Hellwig 已提交
3676
 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Z
Zhu Yi 已提交
3677
 *
3678
 * If there are slots in the RX queue that need to be restocked,
Z
Zhu Yi 已提交
3679
 * and we have free pre-allocated buffers, fill the ranks as much
3680
 * as we can, pulling from rx_free.
Z
Zhu Yi 已提交
3681 3682 3683 3684 3685
 *
 * 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
3686
static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3687
{
C
Christoph Hellwig 已提交
3688
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3689
	struct list_head *element;
C
Christoph Hellwig 已提交
3690
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3691 3692 3693 3694 3695
	unsigned long flags;
	int write, rc;

	spin_lock_irqsave(&rxq->lock, flags);
	write = rxq->write & ~0x7;
C
Christoph Hellwig 已提交
3696
	while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3697
		/* Get next free Rx buffer, remove from free list */
Z
Zhu Yi 已提交
3698
		element = rxq->rx_free.next;
C
Christoph Hellwig 已提交
3699
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
Z
Zhu Yi 已提交
3700
		list_del(element);
3701 3702

		/* Point to Rx buffer via next RBD in circular buffer */
C
Christoph Hellwig 已提交
3703
		rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
Z
Zhu Yi 已提交
3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714
		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);


3715 3716
	/* 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
3717 3718 3719 3720 3721
	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
3722
		rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
Z
Zhu Yi 已提交
3723 3724 3725 3726 3727 3728 3729 3730
		if (rc)
			return rc;
	}

	return 0;
}

/**
C
Christoph Hellwig 已提交
3731
 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Z
Zhu Yi 已提交
3732 3733 3734
 *
 * When moving to rx_free an SKB is allocated for the slot.
 *
C
Christoph Hellwig 已提交
3735
 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3736
 * This is called as a scheduled work item (except for during initialization)
Z
Zhu Yi 已提交
3737
 */
3738
static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3739
{
C
Christoph Hellwig 已提交
3740
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3741
	struct list_head *element;
C
Christoph Hellwig 已提交
3742
	struct iwl3945_rx_mem_buffer *rxb;
Z
Zhu Yi 已提交
3743 3744 3745 3746
	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
3747
		rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3748 3749

		/* Alloc a new receive buffer */
Z
Zhu Yi 已提交
3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760
		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
3761 3762 3763 3764 3765 3766 3767 3768 3769

		/* 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
3770 3771
		priv->alloc_rxb_skb++;
		list_del(element);
3772 3773

		/* Get physical address of RB/SKB */
Z
Zhu Yi 已提交
3774 3775 3776 3777 3778 3779 3780
		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);
3781 3782 3783 3784 3785
}

/*
 * this should be called while priv->lock is locked
 */
3786
static void __iwl3945_rx_replenish(void *data)
3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800
{
	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
3801 3802

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
3803
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
3804 3805 3806 3807
	spin_unlock_irqrestore(&priv->lock, flags);
}

/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3808
 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
Z
Zhu Yi 已提交
3809 3810 3811
 * 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
3812
static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828
{
	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
3829
int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3830
{
C
Christoph Hellwig 已提交
3831
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3832 3833 3834 3835 3836 3837
	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);
3838 3839

	/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
Z
Zhu Yi 已提交
3840 3841 3842
	rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
	if (!rxq->bd)
		return -ENOMEM;
3843

Z
Zhu Yi 已提交
3844 3845 3846
	/* 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);
3847

Z
Zhu Yi 已提交
3848 3849 3850 3851 3852 3853 3854 3855
	/* 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
3856
void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
Z
Zhu Yi 已提交
3857 3858 3859 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
{
	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
3903
int iwl3945_calc_db_from_ratio(int sig_ratio)
Z
Zhu Yi 已提交
3904
{
3905 3906
	/* 1000:1 or higher just report as 60 dB */
	if (sig_ratio >= 1000)
Z
Zhu Yi 已提交
3907 3908
		return 60;

3909
	/* 100:1 or higher, divide by 10 and use table,
Z
Zhu Yi 已提交
3910
	 *   add 20 dB to make up for divide by 10 */
3911
	if (sig_ratio >= 100)
Z
Zhu Yi 已提交
3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928
		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
3929
int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Z
Zhu Yi 已提交
3930 3931 3932 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
{
	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;
}

/**
3964
 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Z
Zhu Yi 已提交
3965 3966 3967 3968 3969
 *
 * 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
3970
static void iwl3945_rx_handle(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
3971
{
C
Christoph Hellwig 已提交
3972 3973 3974
	struct iwl3945_rx_mem_buffer *rxb;
	struct iwl3945_rx_packet *pkt;
	struct iwl3945_rx_queue *rxq = &priv->rxq;
Z
Zhu Yi 已提交
3975 3976 3977
	u32 r, i;
	int reclaim;
	unsigned long flags;
3978
	u8 fill_rx = 0;
M
Mohamed Abbas 已提交
3979
	u32 count = 8;
Z
Zhu Yi 已提交
3980

3981 3982
	/* 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
3983
	r = iwl3945_hw_get_rx_read(priv);
Z
Zhu Yi 已提交
3984 3985
	i = rxq->read;

3986 3987
	if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
		fill_rx = 1;
Z
Zhu Yi 已提交
3988 3989 3990 3991 3992 3993 3994
	/* 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];

3995
		/* If an RXB doesn't have a Rx queue slot associated with it,
Z
Zhu Yi 已提交
3996 3997 3998 3999 4000 4001 4002 4003 4004
		 * 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
4005
		pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
Z
Zhu Yi 已提交
4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018

		/* 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
4019
		 *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
Z
Zhu Yi 已提交
4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033
		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) {
4034 4035
			/* Invoke any callbacks, transfer the skb to caller, and
			 * fire off the (possibly) blocking iwl3945_send_cmd()
Z
Zhu Yi 已提交
4036 4037
			 * as we reclaim the driver command queue */
			if (rxb && rxb->skb)
C
Christoph Hellwig 已提交
4038
				iwl3945_tx_cmd_complete(priv, rxb);
Z
Zhu Yi 已提交
4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057
			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;
4058 4059 4060 4061 4062 4063 4064 4065 4066 4067
		/* 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
4068 4069 4070 4071
	}

	/* Backtrack one entry */
	priv->rxq.read = i;
C
Christoph Hellwig 已提交
4072
	iwl3945_rx_queue_restock(priv);
Z
Zhu Yi 已提交
4073 4074
}

4075 4076 4077
/**
 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
 */
C
Christoph Hellwig 已提交
4078 4079
static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
				  struct iwl3945_tx_queue *txq)
Z
Zhu Yi 已提交
4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092
{
	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
4093
		reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
Z
Zhu Yi 已提交
4094 4095 4096

		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
4097
			iwl3945_set_bit(priv, CSR_GP_CNTRL,
Z
Zhu Yi 已提交
4098 4099 4100 4101 4102
				    CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
			return rc;
		}

		/* restore this queue's parameters in nic hardware. */
C
Christoph Hellwig 已提交
4103
		rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4104 4105
		if (rc)
			return rc;
C
Christoph Hellwig 已提交
4106
		iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4107
				     txq->q.write_ptr | (txq_id << 8));
C
Christoph Hellwig 已提交
4108
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4109 4110 4111 4112

	/* 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
4113
		iwl3945_write32(priv, HBUS_TARG_WRPTR,
4114
			    txq->q.write_ptr | (txq_id << 8));
Z
Zhu Yi 已提交
4115 4116 4117 4118 4119 4120

	txq->need_update = 0;

	return rc;
}

4121
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4122
static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
Z
Zhu Yi 已提交
4123
{
4124 4125
	DECLARE_MAC_BUF(mac);

Z
Zhu Yi 已提交
4126
	IWL_DEBUG_RADIO("RX CONFIG:\n");
C
Christoph Hellwig 已提交
4127
	iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Z
Zhu Yi 已提交
4128 4129 4130 4131 4132 4133 4134 4135
	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);
4136 4137 4138 4139
	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
4140 4141 4142 4143
	IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

C
Christoph Hellwig 已提交
4144
static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4145 4146 4147
{
	IWL_DEBUG_ISR("Enabling interrupts\n");
	set_bit(STATUS_INT_ENABLED, &priv->status);
C
Christoph Hellwig 已提交
4148
	iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Z
Zhu Yi 已提交
4149 4150
}

C
Christoph Hellwig 已提交
4151
static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4152 4153 4154 4155
{
	clear_bit(STATUS_INT_ENABLED, &priv->status);

	/* disable interrupts from uCode/NIC to host */
C
Christoph Hellwig 已提交
4156
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4157 4158 4159

	/* acknowledge/clear/reset any interrupts still pending
	 * from uCode or flow handler (Rx/Tx DMA) */
C
Christoph Hellwig 已提交
4160 4161
	iwl3945_write32(priv, CSR_INT, 0xffffffff);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Z
Zhu Yi 已提交
4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187
	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
4188
static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4189 4190 4191 4192 4193 4194 4195 4196
{
	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
4197
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4198 4199 4200 4201
		IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4202
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4203 4204 4205 4206 4207
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

C
Christoph Hellwig 已提交
4208
	count = iwl3945_read_targ_mem(priv, base);
Z
Zhu Yi 已提交
4209 4210 4211

	if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
		IWL_ERROR("Start IWL Error Log Dump:\n");
4212
		IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
Z
Zhu Yi 已提交
4213 4214 4215 4216 4217 4218 4219
	}

	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
4220
		desc = iwl3945_read_targ_mem(priv, base + i);
Z
Zhu Yi 已提交
4221
		time =
C
Christoph Hellwig 已提交
4222
		    iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Z
Zhu Yi 已提交
4223
		blink1 =
C
Christoph Hellwig 已提交
4224
		    iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Z
Zhu Yi 已提交
4225
		blink2 =
C
Christoph Hellwig 已提交
4226
		    iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Z
Zhu Yi 已提交
4227
		ilink1 =
C
Christoph Hellwig 已提交
4228
		    iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Z
Zhu Yi 已提交
4229
		ilink2 =
C
Christoph Hellwig 已提交
4230
		    iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Z
Zhu Yi 已提交
4231
		data1 =
C
Christoph Hellwig 已提交
4232
		    iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Z
Zhu Yi 已提交
4233 4234 4235 4236 4237 4238 4239

		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
4240
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4241 4242 4243

}

4244
#define EVENT_START_OFFSET  (6 * sizeof(u32))
Z
Zhu Yi 已提交
4245 4246

/**
C
Christoph Hellwig 已提交
4247
 * iwl3945_print_event_log - Dump error event log to syslog
Z
Zhu Yi 已提交
4248
 *
C
Christoph Hellwig 已提交
4249
 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
Z
Zhu Yi 已提交
4250
 */
C
Christoph Hellwig 已提交
4251
static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
Z
Zhu Yi 已提交
4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274
				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
4275
		ev = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4276
		ptr += sizeof(u32);
C
Christoph Hellwig 已提交
4277
		time = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4278 4279 4280 4281
		ptr += sizeof(u32);
		if (mode == 0)
			IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
		else {
C
Christoph Hellwig 已提交
4282
			data = iwl3945_read_targ_mem(priv, ptr);
Z
Zhu Yi 已提交
4283 4284 4285 4286 4287 4288
			ptr += sizeof(u32);
			IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
		}
	}
}

C
Christoph Hellwig 已提交
4289
static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4290 4291 4292 4293 4294 4295 4296 4297 4298 4299
{
	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
4300
	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Z
Zhu Yi 已提交
4301 4302 4303 4304
		IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
		return;
	}

C
Christoph Hellwig 已提交
4305
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
4306 4307 4308 4309 4310 4311
	if (rc) {
		IWL_WARNING("Can not read from adapter at this time.\n");
		return;
	}

	/* event log header */
C
Christoph Hellwig 已提交
4312 4313 4314 4315
	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
4316 4317 4318 4319 4320

	size = num_wraps ? capacity : next_entry;

	/* bail out if nothing in log */
	if (size == 0) {
4321
		IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
C
Christoph Hellwig 已提交
4322
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4323 4324 4325
		return;
	}

4326
	IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
Z
Zhu Yi 已提交
4327 4328 4329 4330 4331
		  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
4332
		iwl3945_print_event_log(priv, next_entry,
Z
Zhu Yi 已提交
4333 4334 4335
				    capacity - next_entry, mode);

	/* (then/else) start at top of log */
C
Christoph Hellwig 已提交
4336
	iwl3945_print_event_log(priv, 0, next_entry, mode);
Z
Zhu Yi 已提交
4337

C
Christoph Hellwig 已提交
4338
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4339 4340 4341
}

/**
C
Christoph Hellwig 已提交
4342
 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Z
Zhu Yi 已提交
4343
 */
C
Christoph Hellwig 已提交
4344
static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4345
{
C
Christoph Hellwig 已提交
4346
	/* Set the FW error flag -- cleared on iwl3945_down */
Z
Zhu Yi 已提交
4347 4348 4349 4350 4351
	set_bit(STATUS_FW_ERROR, &priv->status);

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

4352
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4353 4354 4355 4356
	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
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369
	}
#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
4370
		if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4371 4372 4373 4374 4375 4376 4377 4378
			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
4379
static void iwl3945_error_recovery(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4380 4381 4382 4383 4384 4385
{
	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
4386
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
4387

C
Christoph Hellwig 已提交
4388
	iwl3945_add_station(priv, priv->bssid, 1, 0);
Z
Zhu Yi 已提交
4389 4390 4391 4392 4393 4394 4395

	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
4396
static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4397 4398 4399 4400
{
	u32 inta, handled = 0;
	u32 inta_fh;
	unsigned long flags;
4401
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
4402 4403 4404 4405 4406 4407 4408 4409
	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
4410 4411
	inta = iwl3945_read32(priv, CSR_INT);
	iwl3945_write32(priv, CSR_INT, inta);
Z
Zhu Yi 已提交
4412 4413 4414 4415

	/* 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
4416 4417
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
	iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Z
Zhu Yi 已提交
4418

4419
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4420
	if (iwl3945_debug_level & IWL_DL_ISR) {
4421 4422
		/* just for debug */
		inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
Z
Zhu Yi 已提交
4423 4424 4425 4426 4427 4428 4429 4430 4431
		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
4432
	if (inta_fh & CSR39_FH_INT_RX_MASK)
Z
Zhu Yi 已提交
4433
		inta |= CSR_INT_BIT_FH_RX;
T
Tomas Winkler 已提交
4434
	if (inta_fh & CSR39_FH_INT_TX_MASK)
Z
Zhu Yi 已提交
4435 4436 4437 4438 4439 4440 4441
		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
4442
		iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
4443

C
Christoph Hellwig 已提交
4444
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4445 4446 4447 4448 4449 4450 4451 4452

		handled |= CSR_INT_BIT_HW_ERR;

		spin_unlock_irqrestore(&priv->lock, flags);

		return;
	}

4453
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4454
	if (iwl3945_debug_level & (IWL_DL_ISR)) {
Z
Zhu Yi 已提交
4455
		/* NIC fires this, but we don't use it, redundant with WAKEUP */
4456 4457 4458
		if (inta & CSR_INT_BIT_SCD)
			IWL_DEBUG_ISR("Scheduler finished to transmit "
				      "the frame/frames.\n");
Z
Zhu Yi 已提交
4459 4460 4461 4462 4463 4464 4465

		/* 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 */
4466
	inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Z
Zhu Yi 已提交
4467 4468 4469 4470

	/* 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
4471
		if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
Z
Zhu Yi 已提交
4472 4473 4474 4475 4476 4477 4478 4479 4480 4481
				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
4482
		 *   iwl3945_rx_card_state_notif() */
4483 4484
		if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
			clear_bit(STATUS_RF_KILL_HW, &priv->status);
Z
Zhu Yi 已提交
4485
			queue_work(priv->workqueue, &priv->restart);
4486
		}
Z
Zhu Yi 已提交
4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500

		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
4501
		iwl3945_irq_handle_error(priv);
Z
Zhu Yi 已提交
4502 4503 4504 4505 4506 4507
		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
4508 4509 4510 4511 4512 4513 4514
		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
4515 4516 4517 4518 4519 4520 4521 4522

		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
4523
		iwl3945_rx_handle(priv);
Z
Zhu Yi 已提交
4524 4525 4526 4527 4528 4529
		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
4530 4531 4532
		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
4533 4534
					     FH_TCSR_CREDIT
					     (ALM_FH_SRVC_CHNL), 0x0);
C
Christoph Hellwig 已提交
4535
			iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549
		}
		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 */
C
Christoph Hellwig 已提交
4550
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
4551

4552
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
4553 4554 4555 4556
	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
4557 4558 4559 4560 4561 4562 4563
		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
4564
static irqreturn_t iwl3945_isr(int irq, void *data)
Z
Zhu Yi 已提交
4565
{
C
Christoph Hellwig 已提交
4566
	struct iwl3945_priv *priv = data;
Z
Zhu Yi 已提交
4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577
	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
4578 4579
	inta_mask = iwl3945_read32(priv, CSR_INT_MASK);  /* just for debug */
	iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
Z
Zhu Yi 已提交
4580 4581

	/* Discover which interrupts are active/pending */
C
Christoph Hellwig 已提交
4582 4583
	inta = iwl3945_read32(priv, CSR_INT);
	inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
Z
Zhu Yi 已提交
4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595

	/* 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);
4596
		goto unplugged;
Z
Zhu Yi 已提交
4597 4598 4599 4600 4601
	}

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

4602 4603
	inta &= ~CSR_INT_BIT_SCD;

C
Christoph Hellwig 已提交
4604
	/* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4605 4606
	if (likely(inta || inta_fh))
		tasklet_schedule(&priv->irq_tasklet);
4607
unplugged:
Z
Zhu Yi 已提交
4608 4609 4610 4611 4612 4613
	spin_unlock(&priv->lock);

	return IRQ_HANDLED;

 none:
	/* re-enable interrupts here since we don't have anything to service. */
C
Christoph Hellwig 已提交
4614
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
4615 4616 4617 4618 4619 4620
	spin_unlock(&priv->lock);
	return IRQ_NONE;
}

/************************** EEPROM BANDS ****************************
 *
C
Christoph Hellwig 已提交
4621
 * The iwl3945_eeprom_band definitions below provide the mapping from the
Z
Zhu Yi 已提交
4622 4623 4624
 * EEPROM contents to the specific channel number supported for each
 * band.
 *
C
Christoph Hellwig 已提交
4625
 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
Z
Zhu Yi 已提交
4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650
 * 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
4651
static const u8 iwl3945_eeprom_band_1[14] = {
Z
Zhu Yi 已提交
4652 4653 4654 4655
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
};

/* 5.2 GHz bands */
4656
static const u8 iwl3945_eeprom_band_2[] = {	/* 4915-5080MHz */
Z
Zhu Yi 已提交
4657 4658 4659
	183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
};

4660
static const u8 iwl3945_eeprom_band_3[] = {	/* 5170-5320MHz */
Z
Zhu Yi 已提交
4661 4662 4663
	34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
};

C
Christoph Hellwig 已提交
4664
static const u8 iwl3945_eeprom_band_4[] = {	/* 5500-5700MHz */
Z
Zhu Yi 已提交
4665 4666 4667
	100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
};

C
Christoph Hellwig 已提交
4668
static const u8 iwl3945_eeprom_band_5[] = {	/* 5725-5825MHz */
Z
Zhu Yi 已提交
4669 4670 4671
	145, 149, 153, 157, 161, 165
};

C
Christoph Hellwig 已提交
4672
static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
Z
Zhu Yi 已提交
4673
				    int *eeprom_ch_count,
C
Christoph Hellwig 已提交
4674
				    const struct iwl3945_eeprom_channel
Z
Zhu Yi 已提交
4675 4676 4677 4678 4679
				    **eeprom_ch_info,
				    const u8 **eeprom_ch_index)
{
	switch (band) {
	case 1:		/* 2.4GHz band */
C
Christoph Hellwig 已提交
4680
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
Z
Zhu Yi 已提交
4681
		*eeprom_ch_info = priv->eeprom.band_1_channels;
C
Christoph Hellwig 已提交
4682
		*eeprom_ch_index = iwl3945_eeprom_band_1;
Z
Zhu Yi 已提交
4683
		break;
4684
	case 2:		/* 4.9GHz band */
C
Christoph Hellwig 已提交
4685
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
Z
Zhu Yi 已提交
4686
		*eeprom_ch_info = priv->eeprom.band_2_channels;
C
Christoph Hellwig 已提交
4687
		*eeprom_ch_index = iwl3945_eeprom_band_2;
Z
Zhu Yi 已提交
4688 4689
		break;
	case 3:		/* 5.2GHz band */
C
Christoph Hellwig 已提交
4690
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
Z
Zhu Yi 已提交
4691
		*eeprom_ch_info = priv->eeprom.band_3_channels;
C
Christoph Hellwig 已提交
4692
		*eeprom_ch_index = iwl3945_eeprom_band_3;
Z
Zhu Yi 已提交
4693
		break;
4694
	case 4:		/* 5.5GHz band */
C
Christoph Hellwig 已提交
4695
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
Z
Zhu Yi 已提交
4696
		*eeprom_ch_info = priv->eeprom.band_4_channels;
C
Christoph Hellwig 已提交
4697
		*eeprom_ch_index = iwl3945_eeprom_band_4;
Z
Zhu Yi 已提交
4698
		break;
4699
	case 5:		/* 5.7GHz band */
C
Christoph Hellwig 已提交
4700
		*eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
Z
Zhu Yi 已提交
4701
		*eeprom_ch_info = priv->eeprom.band_5_channels;
C
Christoph Hellwig 已提交
4702
		*eeprom_ch_index = iwl3945_eeprom_band_5;
Z
Zhu Yi 已提交
4703 4704 4705 4706 4707 4708 4709
		break;
	default:
		BUG();
		return;
	}
}

4710 4711 4712 4713 4714
/**
 * iwl3945_get_channel_info - Find driver's private channel info
 *
 * Based on band and channel number.
 */
C
Christoph Hellwig 已提交
4715
const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4716
						    enum ieee80211_band band, u16 channel)
Z
Zhu Yi 已提交
4717 4718 4719
{
	int i;

4720 4721
	switch (band) {
	case IEEE80211_BAND_5GHZ:
Z
Zhu Yi 已提交
4722 4723 4724 4725 4726 4727
		for (i = 14; i < priv->channel_count; i++) {
			if (priv->channel_info[i].channel == channel)
				return &priv->channel_info[i];
		}
		break;

4728
	case IEEE80211_BAND_2GHZ:
Z
Zhu Yi 已提交
4729 4730 4731
		if (channel >= 1 && channel <= 14)
			return &priv->channel_info[channel - 1];
		break;
4732 4733
	case IEEE80211_NUM_BANDS:
		WARN_ON(1);
Z
Zhu Yi 已提交
4734 4735 4736 4737 4738 4739 4740 4741
	}

	return NULL;
}

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

4742 4743 4744
/**
 * iwl3945_init_channel_map - Set up driver's info for all possible channels
 */
C
Christoph Hellwig 已提交
4745
static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
4746 4747 4748
{
	int eeprom_ch_count = 0;
	const u8 *eeprom_ch_index = NULL;
C
Christoph Hellwig 已提交
4749
	const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
Z
Zhu Yi 已提交
4750
	int band, ch;
C
Christoph Hellwig 已提交
4751
	struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766

	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
4767 4768 4769 4770 4771
	    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
4772 4773 4774

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

C
Christoph Hellwig 已提交
4775
	priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
Z
Zhu Yi 已提交
4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789
				     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
4790
		iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Z
Zhu Yi 已提交
4791 4792 4793 4794 4795
					&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];
4796 4797
			ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
			    IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823

			/* 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;

4824
			IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
Z
Zhu Yi 已提交
4825 4826 4827 4828
				       " %ddBm): Ad-Hoc %ssupported\n",
				       ch_info->channel,
				       is_channel_a_band(ch_info) ?
				       "5.2" : "2.4",
4829
				       CHECK_AND_PRINT(VALID),
Z
Zhu Yi 已提交
4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854
				       CHECK_AND_PRINT(IBSS),
				       CHECK_AND_PRINT(ACTIVE),
				       CHECK_AND_PRINT(RADAR),
				       CHECK_AND_PRINT(WIDE),
				       CHECK_AND_PRINT(NARROW),
				       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++;
		}
	}

4855
	/* Set up txpower settings in driver for all channels */
Z
Zhu Yi 已提交
4856 4857 4858 4859 4860 4861
	if (iwl3945_txpower_set_from_eeprom(priv))
		return -EIO;

	return 0;
}

4862 4863 4864 4865 4866 4867 4868 4869 4870
/*
 * 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
4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893
/* 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

4894 4895
static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
						enum ieee80211_band band)
Z
Zhu Yi 已提交
4896
{
4897
	if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4898 4899 4900 4901 4902
		return IWL_ACTIVE_DWELL_TIME_52;
	else
		return IWL_ACTIVE_DWELL_TIME_24;
}

4903 4904
static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
					  enum ieee80211_band band)
Z
Zhu Yi 已提交
4905
{
4906 4907
	u16 active = iwl3945_get_active_dwell_time(priv, band);
	u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Z
Zhu Yi 已提交
4908 4909 4910
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
	    IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;

C
Christoph Hellwig 已提交
4911
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926
		/* 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;
}

4927 4928
static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
					 enum ieee80211_band band,
Z
Zhu Yi 已提交
4929
				     u8 is_active, u8 direct_mask,
C
Christoph Hellwig 已提交
4930
				     struct iwl3945_scan_channel *scan_ch)
Z
Zhu Yi 已提交
4931 4932
{
	const struct ieee80211_channel *channels = NULL;
4933
	const struct ieee80211_supported_band *sband;
C
Christoph Hellwig 已提交
4934
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
4935 4936 4937 4938
	u16 passive_dwell = 0;
	u16 active_dwell = 0;
	int added, i;

4939 4940
	sband = iwl3945_get_band(priv, band);
	if (!sband)
Z
Zhu Yi 已提交
4941 4942
		return 0;

4943
	channels = sband->channels;
Z
Zhu Yi 已提交
4944

4945 4946
	active_dwell = iwl3945_get_active_dwell_time(priv, band);
	passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Z
Zhu Yi 已提交
4947

4948 4949
	for (i = 0, added = 0; i < sband->n_channels; i++) {
		if (channels[i].hw_value ==
Z
Zhu Yi 已提交
4950
		    le16_to_cpu(priv->active_rxon.channel)) {
C
Christoph Hellwig 已提交
4951
			if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
4952 4953 4954 4955 4956 4957 4958 4959
				IWL_DEBUG_SCAN
				    ("Skipping current channel %d\n",
				     le16_to_cpu(priv->active_rxon.channel));
				continue;
			}
		} else if (priv->only_active_channel)
			continue;

4960
		scan_ch->channel = channels[i].hw_value;
Z
Zhu Yi 已提交
4961

4962
		ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Z
Zhu Yi 已提交
4963 4964 4965 4966 4967 4968 4969
		if (!is_channel_valid(ch_info)) {
			IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
				       scan_ch->channel);
			continue;
		}

		if (!is_active || is_channel_passive(ch_info) ||
4970
		    (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
Z
Zhu Yi 已提交
4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983
			scan_ch->type = 0;	/* passive */
		else
			scan_ch->type = 1;	/* active */

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

		if (is_channel_narrow(ch_info))
			scan_ch->type |= (1 << 7);

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

4984
		/* Set txpower levels to defaults */
Z
Zhu Yi 已提交
4985 4986 4987 4988
		scan_ch->tpc.dsp_atten = 110;
		/* scan_pwr_info->tpc.dsp_atten; */

		/*scan_pwr_info->tpc.tx_gain; */
4989
		if (band == IEEE80211_BAND_5GHZ)
Z
Zhu Yi 已提交
4990 4991 4992 4993
			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
4994
			 * power level:
4995
			 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Z
Zhu Yi 已提交
4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012
			 */
		}

		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
5013
static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
Z
Zhu Yi 已提交
5014 5015 5016 5017 5018
			      struct ieee80211_rate *rates)
{
	int i;

	for (i = 0; i < IWL_RATE_COUNT; i++) {
5019 5020 5021 5022 5023
		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
5024
			/*
5025
			 * If CCK != 1M then set short preamble rate flag.
Z
Zhu Yi 已提交
5026
			 */
C
Christoph Hellwig 已提交
5027
			rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5028
				0 : IEEE80211_RATE_SHORT_PREAMBLE;
Z
Zhu Yi 已提交
5029 5030 5031 5032 5033
		}
	}
}

/**
C
Christoph Hellwig 已提交
5034
 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Z
Zhu Yi 已提交
5035
 */
C
Christoph Hellwig 已提交
5036
static int iwl3945_init_geos(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5037
{
C
Christoph Hellwig 已提交
5038
	struct iwl3945_channel_info *ch;
5039
	struct ieee80211_supported_band *sband;
Z
Zhu Yi 已提交
5040 5041 5042 5043 5044
	struct ieee80211_channel *channels;
	struct ieee80211_channel *geo_ch;
	struct ieee80211_rate *rates;
	int i = 0;

5045 5046
	if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
	    priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Z
Zhu Yi 已提交
5047 5048 5049 5050 5051 5052 5053
		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);
5054
	if (!channels)
Z
Zhu Yi 已提交
5055 5056
		return -ENOMEM;

5057
	rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Z
Zhu Yi 已提交
5058 5059 5060 5061 5062 5063 5064
			GFP_KERNEL);
	if (!rates) {
		kfree(channels);
		return -ENOMEM;
	}

	/* 5.2GHz channels start after the 2.4GHz channels */
5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075
	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
5076 5077 5078 5079

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

C
Christoph Hellwig 已提交
5080
	iwl3945_init_hw_rates(priv, rates);
Z
Zhu Yi 已提交
5081

5082
	for (i = 0;  i < priv->channel_count; i++) {
Z
Zhu Yi 已提交
5083 5084
		ch = &priv->channel_info[i];

5085 5086
		/* FIXME: might be removed if scan is OK*/
		if (!is_channel_valid(ch))
Z
Zhu Yi 已提交
5087 5088 5089
			continue;

		if (is_channel_a_band(ch))
5090
			sband =  &priv->bands[IEEE80211_BAND_5GHZ];
5091
		else
5092
			sband =  &priv->bands[IEEE80211_BAND_2GHZ];
Z
Zhu Yi 已提交
5093

5094 5095 5096
		geo_ch = &sband->channels[sband->n_channels++];

		geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5097 5098
		geo_ch->max_power = ch->max_power_avg;
		geo_ch->max_antenna_gain = 0xff;
5099
		geo_ch->hw_value = ch->channel;
Z
Zhu Yi 已提交
5100 5101

		if (is_channel_valid(ch)) {
5102 5103
			if (!(ch->flags & EEPROM_CHANNEL_IBSS))
				geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Z
Zhu Yi 已提交
5104

5105 5106
			if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
				geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Z
Zhu Yi 已提交
5107 5108

			if (ch->flags & EEPROM_CHANNEL_RADAR)
5109
				geo_ch->flags |= IEEE80211_CHAN_RADAR;
Z
Zhu Yi 已提交
5110 5111 5112 5113

			if (ch->max_power_avg > priv->max_channel_txpower_limit)
				priv->max_channel_txpower_limit =
				    ch->max_power_avg;
5114
		} else {
5115
			geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126
		}

		/* 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
5127 5128
	}

T
Tomas Winkler 已提交
5129 5130
	if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
	     priv->cfg->sku & IWL_SKU_A) {
Z
Zhu Yi 已提交
5131 5132 5133 5134
		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
5135
		 priv->cfg->sku &= ~IWL_SKU_A;
Z
Zhu Yi 已提交
5136 5137 5138 5139
	}

	printk(KERN_INFO DRV_NAME
	       ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5140 5141
	       priv->bands[IEEE80211_BAND_2GHZ].n_channels,
	       priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Z
Zhu Yi 已提交
5142

5143 5144 5145 5146 5147 5148
	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
5149 5150 5151 5152 5153 5154

	set_bit(STATUS_GEO_CONFIGURED, &priv->status);

	return 0;
}

5155 5156 5157 5158 5159 5160 5161 5162 5163 5164
/*
 * 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
5165 5166 5167 5168 5169 5170
/******************************************************************************
 *
 * uCode download functions
 *
 ******************************************************************************/

C
Christoph Hellwig 已提交
5171
static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5172
{
5173 5174 5175 5176 5177 5178
	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
5179 5180 5181
}

/**
C
Christoph Hellwig 已提交
5182
 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5183 5184
 *     looking at all data.
 */
C
Christoph Hellwig 已提交
5185
static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
Z
Zhu Yi 已提交
5186 5187 5188 5189 5190 5191 5192 5193
{
	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
5194
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5195 5196 5197
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5198
	iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
Z
Zhu Yi 已提交
5199 5200 5201 5202 5203 5204

	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
5205
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216
		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
5217
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5218 5219

	if (!errcnt)
5220
		IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Z
Zhu Yi 已提交
5221 5222 5223 5224 5225 5226

	return rc;
}


/**
C
Christoph Hellwig 已提交
5227
 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Z
Zhu Yi 已提交
5228 5229 5230
 *   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
5231
static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
Z
Zhu Yi 已提交
5232 5233 5234 5235 5236 5237 5238 5239
{
	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
5240
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5241 5242 5243 5244 5245 5246 5247
	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
5248
		iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Z
Zhu Yi 已提交
5249
			i + RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5250
		val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Z
Zhu Yi 已提交
5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263
		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
5264
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5265 5266 5267 5268 5269 5270

	return rc;
}


/**
C
Christoph Hellwig 已提交
5271
 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Z
Zhu Yi 已提交
5272 5273
 *    and verify its contents
 */
C
Christoph Hellwig 已提交
5274
static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5275 5276 5277 5278 5279 5280 5281 5282
{
	__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
5283
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5284 5285 5286 5287 5288 5289 5290 5291
	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
5292
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5293 5294 5295 5296 5297 5298 5299 5300
	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
5301
	rc = iwl3945_verify_inst_sparse(priv, image, len);
Z
Zhu Yi 已提交
5302 5303 5304 5305 5306 5307 5308
	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");

5309 5310 5311
	/* 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
5312 5313
	image = (__le32 *)priv->ucode_boot.v_addr;
	len = priv->ucode_boot.len;
C
Christoph Hellwig 已提交
5314
	rc = iwl3945_verify_inst_full(priv, image, len);
Z
Zhu Yi 已提交
5315 5316 5317 5318 5319 5320

	return rc;
}


/* check contents of special bootstrap uCode SRAM */
C
Christoph Hellwig 已提交
5321
static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5322 5323 5324 5325 5326 5327 5328 5329 5330
{
	__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
5331
	val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
Z
Zhu Yi 已提交
5332 5333 5334
	for (reg = BSM_SRAM_LOWER_BOUND;
	     reg < BSM_SRAM_LOWER_BOUND + len;
	     reg += sizeof(u32), image ++) {
C
Christoph Hellwig 已提交
5335
		val = iwl3945_read_prph(priv, reg);
Z
Zhu Yi 已提交
5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351
		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
5352
 * iwl3945_load_bsm - Load bootstrap instructions
Z
Zhu Yi 已提交
5353 5354 5355 5356 5357 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
 *
 * 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
5383
static int iwl3945_load_bsm(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402
{
	__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
5403
	 *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
C
Christoph Hellwig 已提交
5404
	 * NOTE:  iwl3945_initialize_alive_start() will replace these values,
Z
Zhu Yi 已提交
5405 5406 5407 5408 5409 5410 5411
	 *        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
5412
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5413 5414 5415
	if (rc)
		return rc;

C
Christoph Hellwig 已提交
5416 5417 5418 5419
	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
5420 5421 5422 5423 5424

	/* 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
5425
		_iwl3945_write_prph(priv, reg_offset,
Z
Zhu Yi 已提交
5426 5427
					  le32_to_cpu(*image));

C
Christoph Hellwig 已提交
5428
	rc = iwl3945_verify_bsm(priv);
Z
Zhu Yi 已提交
5429
	if (rc) {
C
Christoph Hellwig 已提交
5430
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5431 5432 5433 5434
		return rc;
	}

	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
C
Christoph Hellwig 已提交
5435 5436
	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
5437
				 RTC_INST_LOWER_BOUND);
C
Christoph Hellwig 已提交
5438
	iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Z
Zhu Yi 已提交
5439 5440 5441

	/* Load bootstrap code into instruction SRAM now,
	 *   to prepare to load "initialize" uCode */
C
Christoph Hellwig 已提交
5442
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5443 5444 5445 5446
		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
5447
		done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
Z
Zhu Yi 已提交
5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460
		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
5461
	iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
Z
Zhu Yi 已提交
5462 5463
		BSM_WR_CTRL_REG_BIT_START_EN);

C
Christoph Hellwig 已提交
5464
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5465 5466 5467 5468

	return 0;
}

C
Christoph Hellwig 已提交
5469
static void iwl3945_nic_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5470 5471
{
	/* Remove all resets to allow NIC to operate */
C
Christoph Hellwig 已提交
5472
	iwl3945_write32(priv, CSR_RESET, 0);
Z
Zhu Yi 已提交
5473 5474 5475
}

/**
C
Christoph Hellwig 已提交
5476
 * iwl3945_read_ucode - Read uCode images from disk file.
Z
Zhu Yi 已提交
5477 5478 5479
 *
 * Copy into buffers for card to fetch via bus-mastering
 */
C
Christoph Hellwig 已提交
5480
static int iwl3945_read_ucode(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5481
{
C
Christoph Hellwig 已提交
5482
	struct iwl3945_ucode *ucode;
5483
	int ret = 0;
Z
Zhu Yi 已提交
5484 5485
	const struct firmware *ucode_raw;
	/* firmware file name contains uCode/driver compatibility version */
5486
	const char *name = priv->cfg->fw_name;
Z
Zhu Yi 已提交
5487 5488 5489 5490 5491 5492
	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. */
5493 5494 5495 5496
	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
5497 5498 5499 5500 5501 5502 5503 5504 5505
		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");
5506
		ret = -EINVAL;
Z
Zhu Yi 已提交
5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520
		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);
5521 5522 5523 5524 5525
	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
5526 5527 5528 5529 5530 5531 5532 5533

	/* 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);
5534
		ret = -EINVAL;
Z
Zhu Yi 已提交
5535 5536 5537 5538 5539
		goto err_release;
	}

	/* Verify that uCode images will fit in card's SRAM */
	if (inst_size > IWL_MAX_INST_SIZE) {
5540 5541 5542
		IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
			       inst_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5543 5544 5545 5546
		goto err_release;
	}

	if (data_size > IWL_MAX_DATA_SIZE) {
5547 5548 5549
		IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
			       data_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5550 5551 5552
		goto err_release;
	}
	if (init_size > IWL_MAX_INST_SIZE) {
5553 5554 5555
		IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
				init_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5556 5557 5558
		goto err_release;
	}
	if (init_data_size > IWL_MAX_DATA_SIZE) {
5559 5560 5561
		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
5562 5563 5564
		goto err_release;
	}
	if (boot_size > IWL_MAX_BSM_SIZE) {
5565 5566 5567
		IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
				boot_size);
		ret = -EINVAL;
Z
Zhu Yi 已提交
5568 5569 5570 5571 5572 5573 5574 5575 5576
		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;
5577
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Z
Zhu Yi 已提交
5578 5579

	priv->ucode_data.len = data_size;
5580
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Z
Zhu Yi 已提交
5581 5582

	priv->ucode_data_backup.len = data_size;
5583
	iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Z
Zhu Yi 已提交
5584

5585 5586 5587
	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
5588 5589

	/* Initialization instructions and data */
5590 5591
	if (init_size && init_data_size) {
		priv->ucode_init.len = init_size;
5592
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5593 5594

		priv->ucode_init_data.len = init_data_size;
5595
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5596 5597 5598 5599

		if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5600 5601

	/* Bootstrap (instructions only, no data) */
5602 5603
	if (boot_size) {
		priv->ucode_boot.len = boot_size;
5604
		iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Z
Zhu Yi 已提交
5605

5606 5607 5608
		if (!priv->ucode_boot.v_addr)
			goto err_pci_alloc;
	}
Z
Zhu Yi 已提交
5609 5610 5611 5612 5613 5614

	/* 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;
5615
	IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Z
Zhu Yi 已提交
5616 5617 5618 5619 5620
	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
5621
	 * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
Z
Zhu Yi 已提交
5622 5623
	src = &ucode->data[inst_size];
	len = priv->ucode_data.len;
5624
	IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Z
Zhu Yi 已提交
5625 5626 5627 5628 5629 5630 5631
	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;
5632 5633
		IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
			       len);
Z
Zhu Yi 已提交
5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658
		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");
5659
	ret = -ENOMEM;
C
Christoph Hellwig 已提交
5660
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
5661 5662 5663 5664 5665

 err_release:
	release_firmware(ucode_raw);

 error:
5666
	return ret;
Z
Zhu Yi 已提交
5667 5668 5669 5670
}


/**
C
Christoph Hellwig 已提交
5671
 * iwl3945_set_ucode_ptrs - Set uCode address location
Z
Zhu Yi 已提交
5672 5673 5674 5675 5676 5677 5678
 *
 * 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
5679
static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690
{
	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
5691
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5692 5693 5694 5695 5696 5697
	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
5698 5699 5700
	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
5701 5702 5703 5704
				 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
5705
	iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Z
Zhu Yi 已提交
5706 5707
				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);

C
Christoph Hellwig 已提交
5708
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5709 5710 5711 5712 5713 5714 5715 5716 5717

	spin_unlock_irqrestore(&priv->lock, flags);

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

	return rc;
}

/**
C
Christoph Hellwig 已提交
5718
 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5719 5720 5721 5722
 *
 * Called after REPLY_ALIVE notification received from "initialize" uCode.
 *
 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5723
 */
C
Christoph Hellwig 已提交
5724
static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736
{
	/* 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
5737
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5738 5739 5740 5741 5742 5743 5744 5745 5746 5747
		/* 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
5748
	if (iwl3945_set_ucode_ptrs(priv)) {
Z
Zhu Yi 已提交
5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761
		/* 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
5762
 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Z
Zhu Yi 已提交
5763
 *                   from protocol/runtime uCode (initialization uCode's
C
Christoph Hellwig 已提交
5764
 *                   Alive gets handled by iwl3945_init_alive_start()).
Z
Zhu Yi 已提交
5765
 */
C
Christoph Hellwig 已提交
5766
static void iwl3945_alive_start(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783
{
	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
5784
	if (iwl3945_verify_ucode(priv)) {
Z
Zhu Yi 已提交
5785 5786 5787 5788 5789 5790
		/* 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
5791
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5792

C
Christoph Hellwig 已提交
5793
	rc = iwl3945_grab_nic_access(priv);
Z
Zhu Yi 已提交
5794 5795 5796 5797 5798
	if (rc) {
		IWL_WARNING("Can not read rfkill status from adapter\n");
		return;
	}

C
Christoph Hellwig 已提交
5799
	rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
Z
Zhu Yi 已提交
5800
	IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
C
Christoph Hellwig 已提交
5801
	iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5802 5803 5804 5805 5806

	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
5807
		while (iwl3945_hw_get_temperature(priv) == 0) {
Z
Zhu Yi 已提交
5808 5809 5810 5811 5812 5813 5814 5815 5816 5817
			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);

5818
	/* After the ALIVE response, we can send commands to 3945 uCode */
Z
Zhu Yi 已提交
5819 5820 5821 5822 5823
	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
5824
	if (iwl3945_is_rfkill(priv))
Z
Zhu Yi 已提交
5825 5826
		return;

5827
	ieee80211_start_queues(priv->hw);
Z
Zhu Yi 已提交
5828 5829 5830 5831

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

C
Christoph Hellwig 已提交
5832
	iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Z
Zhu Yi 已提交
5833

C
Christoph Hellwig 已提交
5834 5835 5836
	if (iwl3945_is_associated(priv)) {
		struct iwl3945_rxon_cmd *active_rxon =
				(struct iwl3945_rxon_cmd *)(&priv->active_rxon);
Z
Zhu Yi 已提交
5837 5838 5839 5840 5841 5842

		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
5843
		iwl3945_connection_init_rx_config(priv);
Z
Zhu Yi 已提交
5844 5845 5846
		memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
	}

5847
	/* Configure Bluetooth device coexistence support */
C
Christoph Hellwig 已提交
5848
	iwl3945_send_bt_config(priv);
Z
Zhu Yi 已提交
5849 5850

	/* Configure the adapter for unassociated operation */
C
Christoph Hellwig 已提交
5851
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
5852 5853 5854 5855 5856 5857 5858 5859

	/* At this point, the NIC is initialized and operational */
	priv->notif_missed_beacons = 0;
	set_bit(STATUS_READY, &priv->status);

	iwl3945_reg_txpower_periodic(priv);

	IWL_DEBUG_INFO("ALIVE processing complete.\n");
5860
	wake_up_interruptible(&priv->wait_command_queue);
Z
Zhu Yi 已提交
5861

M
Mohamed Abbas 已提交
5862 5863
	iwl3945_led_register(priv);

Z
Zhu Yi 已提交
5864
	if (priv->error_recovering)
C
Christoph Hellwig 已提交
5865
		iwl3945_error_recovery(priv);
Z
Zhu Yi 已提交
5866 5867 5868 5869 5870 5871 5872

	return;

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

C
Christoph Hellwig 已提交
5873
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
Z
Zhu Yi 已提交
5874

C
Christoph Hellwig 已提交
5875
static void __iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887
{
	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
5888
	iwl3945_led_unregister(priv);
C
Christoph Hellwig 已提交
5889
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
5890 5891 5892 5893 5894 5895 5896 5897 5898 5899

	/* 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
5900
	iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Z
Zhu Yi 已提交
5901 5902

	/* tell the device to stop sending interrupts */
C
Christoph Hellwig 已提交
5903
	iwl3945_disable_interrupts(priv);
Z
Zhu Yi 已提交
5904 5905 5906 5907

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

C
Christoph Hellwig 已提交
5908
	/* If we have not previously called iwl3945_init() then
Z
Zhu Yi 已提交
5909
	 * clear all bits but the RF Kill and SUSPEND bits and return */
C
Christoph Hellwig 已提交
5910
	if (!iwl3945_is_init(priv)) {
Z
Zhu Yi 已提交
5911 5912 5913 5914
		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 |
5915 5916
			       test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
					STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927
			       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 |
5928 5929
			test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
				STATUS_GEO_CONFIGURED |
Z
Zhu Yi 已提交
5930 5931 5932 5933 5934 5935
			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
5936
	iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Z
Zhu Yi 已提交
5937 5938
	spin_unlock_irqrestore(&priv->lock, flags);

C
Christoph Hellwig 已提交
5939 5940
	iwl3945_hw_txq_ctx_stop(priv);
	iwl3945_hw_rxq_stop(priv);
Z
Zhu Yi 已提交
5941 5942

	spin_lock_irqsave(&priv->lock, flags);
C
Christoph Hellwig 已提交
5943 5944
	if (!iwl3945_grab_nic_access(priv)) {
		iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
Z
Zhu Yi 已提交
5945
					 APMG_CLK_VAL_DMA_CLK_RQT);
C
Christoph Hellwig 已提交
5946
		iwl3945_release_nic_access(priv);
Z
Zhu Yi 已提交
5947 5948 5949 5950 5951
	}
	spin_unlock_irqrestore(&priv->lock, flags);

	udelay(5);

C
Christoph Hellwig 已提交
5952 5953 5954
	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
5955 5956

 exit:
C
Christoph Hellwig 已提交
5957
	memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
Z
Zhu Yi 已提交
5958 5959 5960 5961 5962 5963

	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
5964
	iwl3945_clear_free_frames(priv);
Z
Zhu Yi 已提交
5965 5966
}

C
Christoph Hellwig 已提交
5967
static void iwl3945_down(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5968 5969
{
	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
5970
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
5971
	mutex_unlock(&priv->mutex);
5972

C
Christoph Hellwig 已提交
5973
	iwl3945_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
5974 5975 5976 5977
}

#define MAX_HW_RESTARTS 5

C
Christoph Hellwig 已提交
5978
static int __iwl3945_up(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989
{
	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");
5990 5991 5992
		return -ENODEV;
	}

5993 5994 5995 5996 5997
	if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
		IWL_ERROR("ucode not available for device bringup\n");
		return -EIO;
	}

5998 5999 6000 6001 6002 6003 6004 6005 6006 6007
	/* 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
6008 6009
	}

C
Christoph Hellwig 已提交
6010
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
Z
Zhu Yi 已提交
6011

C
Christoph Hellwig 已提交
6012
	rc = iwl3945_hw_nic_init(priv);
Z
Zhu Yi 已提交
6013 6014 6015 6016 6017 6018
	if (rc) {
		IWL_ERROR("Unable to int nic\n");
		return rc;
	}

	/* make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
6019 6020
	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
6021 6022 6023
		    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);

	/* clear (again), then enable host interrupts */
C
Christoph Hellwig 已提交
6024 6025
	iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
	iwl3945_enable_interrupts(priv);
Z
Zhu Yi 已提交
6026 6027

	/* really make sure rfkill handshake bits are cleared */
C
Christoph Hellwig 已提交
6028 6029
	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
6030 6031 6032 6033 6034

	/* 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,
6035
	       priv->ucode_data.len);
Z
Zhu Yi 已提交
6036

6037 6038 6039 6040
	/* 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
6041 6042
	for (i = 0; i < MAX_HW_RESTARTS; i++) {

C
Christoph Hellwig 已提交
6043
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
6044 6045 6046 6047

		/* load bootstrap state machine,
		 * load bootstrap program into processor's memory,
		 * prepare to load the "initialize" uCode */
C
Christoph Hellwig 已提交
6048
		rc = iwl3945_load_bsm(priv);
Z
Zhu Yi 已提交
6049 6050 6051 6052 6053 6054 6055

		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
6056
		iwl3945_nic_start(priv);
Z
Zhu Yi 已提交
6057 6058 6059 6060 6061 6062 6063

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

		return 0;
	}

	set_bit(STATUS_EXIT_PENDING, &priv->status);
C
Christoph Hellwig 已提交
6064
	__iwl3945_down(priv);
Z
Zhu Yi 已提交
6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078

	/* 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
6079
static void iwl3945_bg_init_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
6080
{
C
Christoph Hellwig 已提交
6081 6082
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, init_alive_start.work);
Z
Zhu Yi 已提交
6083 6084 6085 6086 6087

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6088
	iwl3945_init_alive_start(priv);
Z
Zhu Yi 已提交
6089 6090 6091
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6092
static void iwl3945_bg_alive_start(struct work_struct *data)
Z
Zhu Yi 已提交
6093
{
C
Christoph Hellwig 已提交
6094 6095
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, alive_start.work);
Z
Zhu Yi 已提交
6096 6097 6098 6099 6100

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6101
	iwl3945_alive_start(priv);
Z
Zhu Yi 已提交
6102 6103 6104
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6105
static void iwl3945_bg_rf_kill(struct work_struct *work)
Z
Zhu Yi 已提交
6106
{
C
Christoph Hellwig 已提交
6107
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
Z
Zhu Yi 已提交
6108 6109 6110 6111 6112 6113 6114 6115

	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
6116
	if (!iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136
		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);
}

#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)

C
Christoph Hellwig 已提交
6137
static void iwl3945_bg_scan_check(struct work_struct *data)
Z
Zhu Yi 已提交
6138
{
C
Christoph Hellwig 已提交
6139 6140
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, scan_check.work);
Z
Zhu Yi 已提交
6141 6142 6143 6144 6145 6146 6147 6148 6149 6150

	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));
6151

Z
Zhu Yi 已提交
6152
		if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
C
Christoph Hellwig 已提交
6153
			iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6154 6155 6156 6157
	}
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6158
static void iwl3945_bg_request_scan(struct work_struct *data)
Z
Zhu Yi 已提交
6159
{
C
Christoph Hellwig 已提交
6160 6161 6162
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, request_scan);
	struct iwl3945_host_cmd cmd = {
Z
Zhu Yi 已提交
6163
		.id = REPLY_SCAN_CMD,
C
Christoph Hellwig 已提交
6164
		.len = sizeof(struct iwl3945_scan_cmd),
Z
Zhu Yi 已提交
6165 6166 6167
		.meta.flags = CMD_SIZE_HUGE,
	};
	int rc = 0;
C
Christoph Hellwig 已提交
6168
	struct iwl3945_scan_cmd *scan;
Z
Zhu Yi 已提交
6169 6170
	struct ieee80211_conf *conf = NULL;
	u8 direct_mask;
6171
	enum ieee80211_band band;
Z
Zhu Yi 已提交
6172 6173 6174 6175 6176

	conf = ieee80211_get_hw_conf(priv->hw);

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
6177
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205
		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
6206
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221
		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
6222
		priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Z
Zhu Yi 已提交
6223 6224 6225 6226 6227 6228 6229
				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
		if (!priv->scan) {
			rc = -ENOMEM;
			goto done;
		}
	}
	scan = priv->scan;
C
Christoph Hellwig 已提交
6230
	memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Z
Zhu Yi 已提交
6231 6232 6233 6234

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

C
Christoph Hellwig 已提交
6235
	if (iwl3945_is_associated(priv)) {
Z
Zhu Yi 已提交
6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248
		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;
6249
		scan->max_out_time = cpu_to_le32(200 * 1024);
Z
Zhu Yi 已提交
6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271
		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
6272
		     iwl3945_escape_essid(priv->direct_ssid,
Z
Zhu Yi 已提交
6273 6274 6275 6276 6277 6278
				      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
6279
	} else if (!iwl3945_is_associated(priv) && priv->essid_len) {
Z
Zhu Yi 已提交
6280 6281 6282 6283 6284 6285 6286 6287 6288 6289
		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;
	} else
		direct_mask = 0;

	/* 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
6290
		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6291
			IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
Z
Zhu Yi 已提交
6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302
	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 */

	switch (priv->scan_bands) {
	case 2:
		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;
6303
		band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
6304 6305 6306 6307 6308
		break;

	case 1:
		scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
		scan->good_CRC_th = IWL_GOOD_CRC_TH;
6309
		band = IEEE80211_BAND_5GHZ;
Z
Zhu Yi 已提交
6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322
		break;

	default:
		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;

6323
	if (direct_mask) {
Z
Zhu Yi 已提交
6324 6325
		IWL_DEBUG_SCAN
		    ("Initiating direct scan for %s.\n",
C
Christoph Hellwig 已提交
6326
		     iwl3945_escape_essid(priv->essid, priv->essid_len));
6327 6328 6329 6330 6331 6332
		scan->channel_count =
			iwl3945_get_channels_for_scan(
				priv, band, 1, /* active */
				direct_mask,
				(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
	} else {
Z
Zhu Yi 已提交
6333
		IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6334 6335 6336 6337 6338 6339
		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
6340 6341

	cmd.len += le16_to_cpu(scan->tx_cmd.len) +
C
Christoph Hellwig 已提交
6342
	    scan->channel_count * sizeof(struct iwl3945_scan_channel);
Z
Zhu Yi 已提交
6343 6344 6345 6346
	cmd.data = scan;
	scan->len = cpu_to_le16(cmd.len);

	set_bit(STATUS_SCAN_HW, &priv->status);
C
Christoph Hellwig 已提交
6347
	rc = iwl3945_send_cmd_sync(priv, &cmd);
Z
Zhu Yi 已提交
6348 6349 6350 6351 6352 6353 6354 6355 6356 6357
	if (rc)
		goto done;

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

	mutex_unlock(&priv->mutex);
	return;

 done:
6358
	/* inform mac80211 scan aborted */
Z
Zhu Yi 已提交
6359 6360 6361 6362
	queue_work(priv->workqueue, &priv->scan_completed);
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6363
static void iwl3945_bg_up(struct work_struct *data)
Z
Zhu Yi 已提交
6364
{
C
Christoph Hellwig 已提交
6365
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
Z
Zhu Yi 已提交
6366 6367 6368 6369 6370

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6371
	__iwl3945_up(priv);
Z
Zhu Yi 已提交
6372 6373 6374
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6375
static void iwl3945_bg_restart(struct work_struct *data)
Z
Zhu Yi 已提交
6376
{
C
Christoph Hellwig 已提交
6377
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
Z
Zhu Yi 已提交
6378 6379 6380 6381

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

C
Christoph Hellwig 已提交
6382
	iwl3945_down(priv);
Z
Zhu Yi 已提交
6383 6384 6385
	queue_work(priv->workqueue, &priv->up);
}

C
Christoph Hellwig 已提交
6386
static void iwl3945_bg_rx_replenish(struct work_struct *data)
Z
Zhu Yi 已提交
6387
{
C
Christoph Hellwig 已提交
6388 6389
	struct iwl3945_priv *priv =
	    container_of(data, struct iwl3945_priv, rx_replenish);
Z
Zhu Yi 已提交
6390 6391 6392 6393 6394

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

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
6395
	iwl3945_rx_replenish(priv);
Z
Zhu Yi 已提交
6396 6397 6398
	mutex_unlock(&priv->mutex);
}

6399 6400
#define IWL_DELAY_NEXT_SCAN (HZ*2)

C
Christoph Hellwig 已提交
6401
static void iwl3945_bg_post_associate(struct work_struct *data)
Z
Zhu Yi 已提交
6402
{
C
Christoph Hellwig 已提交
6403
	struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
Z
Zhu Yi 已提交
6404 6405 6406 6407
					     post_associate.work);

	int rc = 0;
	struct ieee80211_conf *conf = NULL;
6408
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6409 6410 6411 6412 6413 6414 6415

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


6416 6417 6418
	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
6419 6420 6421 6422 6423 6424

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

	mutex_lock(&priv->mutex);

6425
	if (!priv->vif || !priv->is_open) {
6426 6427 6428
		mutex_unlock(&priv->mutex);
		return;
	}
C
Christoph Hellwig 已提交
6429
	iwl3945_scan_cancel_timeout(priv, 200);
6430

Z
Zhu Yi 已提交
6431 6432 6433
	conf = ieee80211_get_hw_conf(priv->hw);

	priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6434
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6435

C
Christoph Hellwig 已提交
6436 6437 6438
	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
6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466
			      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
6467
	iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6468 6469 6470

	switch (priv->iw_mode) {
	case IEEE80211_IF_TYPE_STA:
C
Christoph Hellwig 已提交
6471
		iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Z
Zhu Yi 已提交
6472 6473 6474 6475 6476
		break;

	case IEEE80211_IF_TYPE_IBSS:

		/* clear out the station table */
C
Christoph Hellwig 已提交
6477
		iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
6478

C
Christoph Hellwig 已提交
6479 6480
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
		iwl3945_add_station(priv, priv->bssid, 0, 0);
Z
Zhu Yi 已提交
6481
		iwl3945_sync_sta(priv, IWL_STA_ID,
6482
				 (priv->band == IEEE80211_BAND_5GHZ) ?
Z
Zhu Yi 已提交
6483 6484
				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
				 CMD_ASYNC);
C
Christoph Hellwig 已提交
6485 6486
		iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
		iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6487 6488 6489 6490 6491

		break;

	default:
		 IWL_ERROR("%s Should not be called in %d mode\n",
6492
			   __FUNCTION__, priv->iw_mode);
Z
Zhu Yi 已提交
6493 6494 6495
		break;
	}

C
Christoph Hellwig 已提交
6496
	iwl3945_sequence_reset(priv);
Z
Zhu Yi 已提交
6497

C
Christoph Hellwig 已提交
6498
	iwl3945_activate_qos(priv, 0);
6499

6500 6501
	/* 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
6502 6503 6504
	mutex_unlock(&priv->mutex);
}

C
Christoph Hellwig 已提交
6505
static void iwl3945_bg_abort_scan(struct work_struct *work)
Z
Zhu Yi 已提交
6506
{
C
Christoph Hellwig 已提交
6507
	struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
Z
Zhu Yi 已提交
6508

C
Christoph Hellwig 已提交
6509
	if (!iwl3945_is_ready(priv))
Z
Zhu Yi 已提交
6510 6511 6512 6513 6514
		return;

	mutex_lock(&priv->mutex);

	set_bit(STATUS_SCAN_ABORTING, &priv->status);
C
Christoph Hellwig 已提交
6515
	iwl3945_send_scan_abort(priv);
Z
Zhu Yi 已提交
6516 6517 6518 6519

	mutex_unlock(&priv->mutex);
}

6520 6521
static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);

C
Christoph Hellwig 已提交
6522
static void iwl3945_bg_scan_completed(struct work_struct *work)
Z
Zhu Yi 已提交
6523
{
C
Christoph Hellwig 已提交
6524 6525
	struct iwl3945_priv *priv =
	    container_of(work, struct iwl3945_priv, scan_completed);
Z
Zhu Yi 已提交
6526 6527 6528 6529 6530 6531

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

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

6532 6533
	if (test_bit(STATUS_CONF_PENDING, &priv->status))
		iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6534

Z
Zhu Yi 已提交
6535 6536 6537 6538 6539
	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
6540
	iwl3945_hw_reg_send_txpower(priv);
Z
Zhu Yi 已提交
6541 6542 6543 6544 6545 6546 6547 6548 6549
	mutex_unlock(&priv->mutex);
}

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

6550 6551
#define UCODE_READY_TIMEOUT	(2 * HZ)

C
Christoph Hellwig 已提交
6552
static int iwl3945_mac_start(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6553
{
C
Christoph Hellwig 已提交
6554
	struct iwl3945_priv *priv = hw->priv;
6555
	int ret;
Z
Zhu Yi 已提交
6556 6557 6558

	IWL_DEBUG_MAC80211("enter\n");

6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572
	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
6573 6574 6575
	/* we should be verifying the device is ready to be opened */
	mutex_lock(&priv->mutex);

6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587
	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
6588

6589
	ret = __iwl3945_up(priv);
Z
Zhu Yi 已提交
6590 6591

	mutex_unlock(&priv->mutex);
6592

6593 6594 6595 6596 6597 6598 6599 6600
	if (ret)
		goto out_release_irq;

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

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

6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614
	/* 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;
		}
	}

6615
	priv->is_open = 1;
Z
Zhu Yi 已提交
6616 6617
	IWL_DEBUG_MAC80211("leave\n");
	return 0;
6618 6619 6620 6621 6622

out_release_irq:
	free_irq(priv->pci_dev->irq, priv);
out_disable_msi:
	pci_disable_msi(priv->pci_dev);
6623 6624 6625
	pci_disable_device(priv->pci_dev);
	priv->is_open = 0;
	IWL_DEBUG_MAC80211("leave - failed\n");
6626
	return ret;
Z
Zhu Yi 已提交
6627 6628
}

C
Christoph Hellwig 已提交
6629
static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
6630
{
C
Christoph Hellwig 已提交
6631
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6632 6633

	IWL_DEBUG_MAC80211("enter\n");
6634

6635 6636 6637 6638 6639
	if (!priv->is_open) {
		IWL_DEBUG_MAC80211("leave - skip\n");
		return;
	}

Z
Zhu Yi 已提交
6640
	priv->is_open = 0;
6641 6642

	if (iwl3945_is_ready_rf(priv)) {
6643 6644 6645
		/* stop mac, cancel any scan request and clear
		 * RXON_FILTER_ASSOC_MSK BIT
		 */
6646 6647 6648
		mutex_lock(&priv->mutex);
		iwl3945_scan_cancel_timeout(priv, 100);
		cancel_delayed_work(&priv->post_associate);
6649 6650 6651
		mutex_unlock(&priv->mutex);
	}

6652 6653 6654 6655 6656 6657 6658
	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);
6659

Z
Zhu Yi 已提交
6660 6661 6662
	IWL_DEBUG_MAC80211("leave\n");
}

C
Christoph Hellwig 已提交
6663
static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
Z
Zhu Yi 已提交
6664 6665
		      struct ieee80211_tx_control *ctl)
{
C
Christoph Hellwig 已提交
6666
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6667 6668 6669 6670 6671 6672 6673 6674 6675

	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,
6676
		     ctl->tx_rate->bitrate);
Z
Zhu Yi 已提交
6677

C
Christoph Hellwig 已提交
6678
	if (iwl3945_tx_skb(priv, skb, ctl))
Z
Zhu Yi 已提交
6679 6680 6681 6682 6683 6684
		dev_kfree_skb_any(skb);

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

C
Christoph Hellwig 已提交
6685
static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6686 6687
				 struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6688
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6689
	unsigned long flags;
6690
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6691

6692
	IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Z
Zhu Yi 已提交
6693

6694 6695
	if (priv->vif) {
		IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6696
		return -EOPNOTSUPP;
Z
Zhu Yi 已提交
6697 6698 6699
	}

	spin_lock_irqsave(&priv->lock, flags);
6700
	priv->vif = conf->vif;
Z
Zhu Yi 已提交
6701 6702 6703 6704

	spin_unlock_irqrestore(&priv->lock, flags);

	mutex_lock(&priv->mutex);
6705 6706 6707 6708 6709 6710

	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);
	}

6711 6712
	if (iwl3945_is_ready(priv))
		iwl3945_set_mode(priv, conf->type);
Z
Zhu Yi 已提交
6713 6714 6715

	mutex_unlock(&priv->mutex);

6716
	IWL_DEBUG_MAC80211("leave\n");
Z
Zhu Yi 已提交
6717 6718 6719 6720
	return 0;
}

/**
C
Christoph Hellwig 已提交
6721
 * iwl3945_mac_config - mac80211 config callback
Z
Zhu Yi 已提交
6722 6723 6724 6725 6726
 *
 * 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
6727
static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
Z
Zhu Yi 已提交
6728
{
C
Christoph Hellwig 已提交
6729 6730
	struct iwl3945_priv *priv = hw->priv;
	const struct iwl3945_channel_info *ch_info;
Z
Zhu Yi 已提交
6731
	unsigned long flags;
6732
	int ret = 0;
Z
Zhu Yi 已提交
6733 6734

	mutex_lock(&priv->mutex);
6735
	IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Z
Zhu Yi 已提交
6736

Z
Zhu Yi 已提交
6737 6738
	priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);

C
Christoph Hellwig 已提交
6739
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
6740
		IWL_DEBUG_MAC80211("leave - not ready\n");
6741 6742
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6743 6744
	}

C
Christoph Hellwig 已提交
6745
	if (unlikely(!iwl3945_param_disable_hw_scan &&
Z
Zhu Yi 已提交
6746
		     test_bit(STATUS_SCANNING, &priv->status))) {
6747 6748
		IWL_DEBUG_MAC80211("leave - scanning\n");
		set_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6749
		mutex_unlock(&priv->mutex);
6750
		return 0;
Z
Zhu Yi 已提交
6751 6752 6753 6754
	}

	spin_lock_irqsave(&priv->lock, flags);

6755 6756
	ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
					   conf->channel->hw_value);
Z
Zhu Yi 已提交
6757 6758
	if (!is_channel_valid(ch_info)) {
		IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
6759
			       conf->channel->hw_value, conf->channel->band);
Z
Zhu Yi 已提交
6760 6761
		IWL_DEBUG_MAC80211("leave - invalid channel\n");
		spin_unlock_irqrestore(&priv->lock, flags);
6762 6763
		ret = -EINVAL;
		goto out;
Z
Zhu Yi 已提交
6764 6765
	}

6766
	iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Z
Zhu Yi 已提交
6767

6768
	iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Z
Zhu Yi 已提交
6769 6770 6771 6772

	/* 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
6773
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6774 6775 6776 6777 6778

	spin_unlock_irqrestore(&priv->lock, flags);

#ifdef IEEE80211_CONF_CHANNEL_SWITCH
	if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
C
Christoph Hellwig 已提交
6779
		iwl3945_hw_channel_switch(priv, conf->channel);
6780
		goto out;
Z
Zhu Yi 已提交
6781 6782 6783
	}
#endif

C
Christoph Hellwig 已提交
6784
	iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Z
Zhu Yi 已提交
6785 6786 6787

	if (!conf->radio_enabled) {
		IWL_DEBUG_MAC80211("leave - radio disabled\n");
6788
		goto out;
Z
Zhu Yi 已提交
6789 6790
	}

C
Christoph Hellwig 已提交
6791
	if (iwl3945_is_rfkill(priv)) {
Z
Zhu Yi 已提交
6792
		IWL_DEBUG_MAC80211("leave - RF kill\n");
6793 6794
		ret = -EIO;
		goto out;
Z
Zhu Yi 已提交
6795 6796
	}

C
Christoph Hellwig 已提交
6797
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
6798 6799 6800

	if (memcmp(&priv->active_rxon,
		   &priv->staging_rxon, sizeof(priv->staging_rxon)))
C
Christoph Hellwig 已提交
6801
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6802 6803 6804 6805 6806
	else
		IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");

	IWL_DEBUG_MAC80211("leave\n");

6807
out:
6808
	clear_bit(STATUS_CONF_PENDING, &priv->status);
Z
Zhu Yi 已提交
6809
	mutex_unlock(&priv->mutex);
6810
	return ret;
Z
Zhu Yi 已提交
6811 6812
}

C
Christoph Hellwig 已提交
6813
static void iwl3945_config_ap(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
6814 6815 6816
{
	int rc = 0;

6817
	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Z
Zhu Yi 已提交
6818 6819 6820 6821 6822 6823 6824
		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
6825
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6826 6827

		/* RXON Timing */
C
Christoph Hellwig 已提交
6828 6829 6830
		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
6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859
				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
6860 6861
		iwl3945_commit_rxon(priv);
		iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6862
	}
C
Christoph Hellwig 已提交
6863
	iwl3945_send_beacon_cmd(priv);
Z
Zhu Yi 已提交
6864 6865 6866 6867 6868 6869

	/* 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... */
}

6870 6871
static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
Z
Zhu Yi 已提交
6872 6873
				    struct ieee80211_if_conf *conf)
{
C
Christoph Hellwig 已提交
6874
	struct iwl3945_priv *priv = hw->priv;
6875
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
6876 6877 6878 6879 6880 6881
	unsigned long flags;
	int rc;

	if (conf == NULL)
		return -EIO;

6882 6883 6884 6885 6886 6887
	if (priv->vif != vif) {
		IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
		mutex_unlock(&priv->mutex);
		return 0;
	}

6888 6889
	/* XXX: this MUST use conf->mac_addr */

Z
Zhu Yi 已提交
6890 6891 6892 6893 6894 6895 6896
	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;
	}

6897 6898 6899
	if (!iwl3945_is_alive(priv))
		return -EAGAIN;

Z
Zhu Yi 已提交
6900 6901 6902
	mutex_lock(&priv->mutex);

	if (conf->bssid)
6903 6904
		IWL_DEBUG_MAC80211("bssid: %s\n",
				   print_mac(mac, conf->bssid));
Z
Zhu Yi 已提交
6905

6906 6907 6908
/*
 * very dubious code was here; the probe filtering flag is never set:
 *
Z
Zhu Yi 已提交
6909 6910
	if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
	    !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
6911
 */
Z
Zhu Yi 已提交
6912 6913 6914 6915 6916

	if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
		if (!conf->bssid) {
			conf->bssid = priv->mac_addr;
			memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
6917 6918
			IWL_DEBUG_MAC80211("bssid was set to: %s\n",
					   print_mac(mac, conf->bssid));
Z
Zhu Yi 已提交
6919 6920 6921 6922 6923 6924 6925
		}
		if (priv->ibss_beacon)
			dev_kfree_skb(priv->ibss_beacon);

		priv->ibss_beacon = conf->beacon;
	}

6926 6927 6928
	if (iwl3945_is_rfkill(priv))
		goto done;

Z
Zhu Yi 已提交
6929 6930 6931 6932
	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
6933
		if (iwl3945_scan_cancel_timeout(priv, 100)) {
Z
Zhu Yi 已提交
6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948
			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
6949
			iwl3945_config_ap(priv);
Z
Zhu Yi 已提交
6950
		else {
C
Christoph Hellwig 已提交
6951
			rc = iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6952
			if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
C
Christoph Hellwig 已提交
6953
				iwl3945_add_station(priv,
6954
					priv->active_rxon.bssid_addr, 1, 0);
Z
Zhu Yi 已提交
6955 6956 6957
		}

	} else {
C
Christoph Hellwig 已提交
6958
		iwl3945_scan_cancel_timeout(priv, 100);
Z
Zhu Yi 已提交
6959
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
6960
		iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
6961 6962
	}

6963
 done:
Z
Zhu Yi 已提交
6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978
	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
6979
static void iwl3945_configure_filter(struct ieee80211_hw *hw,
6980 6981 6982 6983 6984 6985
				 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
6986
	 * see also iwl3945_connection_init_rx_config
6987 6988 6989 6990
	 */
	*total_flags = 0;
}

C
Christoph Hellwig 已提交
6991
static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
6992 6993
				     struct ieee80211_if_init_conf *conf)
{
C
Christoph Hellwig 已提交
6994
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
6995 6996 6997 6998

	IWL_DEBUG_MAC80211("enter\n");

	mutex_lock(&priv->mutex);
6999

7000 7001 7002 7003 7004 7005
	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);
	}
7006 7007
	if (priv->vif == conf->vif) {
		priv->vif = NULL;
Z
Zhu Yi 已提交
7008 7009 7010 7011 7012 7013 7014 7015 7016
		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
7017
static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Z
Zhu Yi 已提交
7018 7019 7020
{
	int rc = 0;
	unsigned long flags;
C
Christoph Hellwig 已提交
7021
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7022 7023 7024

	IWL_DEBUG_MAC80211("enter\n");

7025
	mutex_lock(&priv->mutex);
Z
Zhu Yi 已提交
7026 7027
	spin_lock_irqsave(&priv->lock, flags);

C
Christoph Hellwig 已提交
7028
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039
		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;
	}

7040 7041 7042 7043 7044 7045
	/* 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;
	}
Z
Zhu Yi 已提交
7046
	/* if we just finished scan ask for delay */
7047 7048
	if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
				IWL_DELAY_NEXT_SCAN, jiffies)) {
Z
Zhu Yi 已提交
7049 7050 7051 7052
		rc = -EAGAIN;
		goto out_unlock;
	}
	if (len) {
7053
		IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
C
Christoph Hellwig 已提交
7054
			       iwl3945_escape_essid(ssid, len), (int)len);
Z
Zhu Yi 已提交
7055 7056 7057 7058 7059

		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);
7060 7061
	} else
		priv->one_direct_scan = 0;
Z
Zhu Yi 已提交
7062

C
Christoph Hellwig 已提交
7063
	rc = iwl3945_scan_initiate(priv);
Z
Zhu Yi 已提交
7064 7065 7066 7067 7068

	IWL_DEBUG_MAC80211("leave\n");

out_unlock:
	spin_unlock_irqrestore(&priv->lock, flags);
7069
	mutex_unlock(&priv->mutex);
Z
Zhu Yi 已提交
7070 7071 7072 7073

	return rc;
}

C
Christoph Hellwig 已提交
7074
static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Z
Zhu Yi 已提交
7075 7076 7077
			   const u8 *local_addr, const u8 *addr,
			   struct ieee80211_key_conf *key)
{
C
Christoph Hellwig 已提交
7078
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7079 7080 7081 7082 7083
	int rc = 0;
	u8 sta_id;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7084
	if (!iwl3945_param_hwcrypto) {
Z
Zhu Yi 已提交
7085 7086 7087 7088 7089 7090 7091 7092
		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
7093
	sta_id = iwl3945_hw_find_station(priv, addr);
Z
Zhu Yi 已提交
7094
	if (sta_id == IWL_INVALID_STATION) {
7095 7096 7097 7098
		DECLARE_MAC_BUF(mac);

		IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
				   print_mac(mac, addr));
Z
Zhu Yi 已提交
7099 7100 7101 7102 7103
		return -EINVAL;
	}

	mutex_lock(&priv->mutex);

C
Christoph Hellwig 已提交
7104
	iwl3945_scan_cancel_timeout(priv, 100);
7105

Z
Zhu Yi 已提交
7106 7107
	switch (cmd) {
	case  SET_KEY:
C
Christoph Hellwig 已提交
7108
		rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Z
Zhu Yi 已提交
7109
		if (!rc) {
C
Christoph Hellwig 已提交
7110 7111
			iwl3945_set_rxon_hwcrypto(priv, 1);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7112 7113 7114 7115 7116 7117
			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
7118
		rc = iwl3945_clear_sta_key_info(priv, sta_id);
Z
Zhu Yi 已提交
7119
		if (!rc) {
C
Christoph Hellwig 已提交
7120 7121
			iwl3945_set_rxon_hwcrypto(priv, 0);
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134
			IWL_DEBUG_MAC80211("disable hwcrypto key\n");
		}
		break;
	default:
		rc = -EINVAL;
	}

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

	return rc;
}

C
Christoph Hellwig 已提交
7135
static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
Z
Zhu Yi 已提交
7136 7137
			   const struct ieee80211_tx_queue_params *params)
{
C
Christoph Hellwig 已提交
7138
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7139 7140 7141 7142 7143
	unsigned long flags;
	int q;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7144
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166
		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 =
7167
			cpu_to_le16((params->txop * 32));
Z
Zhu Yi 已提交
7168 7169 7170 7171 7172 7173 7174 7175

	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
7176 7177 7178
		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
7179 7180 7181 7182 7183 7184 7185

	mutex_unlock(&priv->mutex);

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

C
Christoph Hellwig 已提交
7186
static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7187 7188
				struct ieee80211_tx_queue_stats *stats)
{
C
Christoph Hellwig 已提交
7189
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7190
	int i, avail;
C
Christoph Hellwig 已提交
7191 7192
	struct iwl3945_tx_queue *txq;
	struct iwl3945_queue *q;
Z
Zhu Yi 已提交
7193 7194 7195 7196
	unsigned long flags;

	IWL_DEBUG_MAC80211("enter\n");

C
Christoph Hellwig 已提交
7197
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7198 7199 7200 7201 7202 7203 7204 7205 7206
		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
7207
		avail = iwl3945_queue_space(q);
Z
Zhu Yi 已提交
7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220

		stats->data[i].len = q->n_window - avail;
		stats->data[i].limit = q->n_window - q->high_mark;
		stats->data[i].count = q->n_window;

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

	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7221
static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
Z
Zhu Yi 已提交
7222 7223 7224 7225 7226 7227 7228 7229
			     struct ieee80211_low_level_stats *stats)
{
	IWL_DEBUG_MAC80211("enter\n");
	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7230
static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7231 7232 7233 7234 7235 7236 7237
{
	IWL_DEBUG_MAC80211("enter\n");
	IWL_DEBUG_MAC80211("leave\n");

	return 0;
}

C
Christoph Hellwig 已提交
7238
static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Z
Zhu Yi 已提交
7239
{
C
Christoph Hellwig 已提交
7240
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7241 7242 7243 7244 7245
	unsigned long flags;

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

C
Christoph Hellwig 已提交
7246
	iwl3945_reset_qos(priv);
7247

Z
Zhu Yi 已提交
7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268
	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);

7269 7270 7271 7272 7273 7274
	if (!iwl3945_is_ready_rf(priv)) {
		IWL_DEBUG_MAC80211("leave - not ready\n");
		mutex_unlock(&priv->mutex);
		return;
	}

7275 7276 7277 7278
	/* 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
7279
		iwl3945_scan_cancel_timeout(priv, 100);
7280
		priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
C
Christoph Hellwig 已提交
7281
		iwl3945_commit_rxon(priv);
7282 7283
	}

Z
Zhu Yi 已提交
7284 7285
	/* Per mac80211.h: This is only used in IBSS mode... */
	if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7286

Z
Zhu Yi 已提交
7287 7288 7289 7290 7291 7292 7293
		IWL_DEBUG_MAC80211("leave - not in IBSS\n");
		mutex_unlock(&priv->mutex);
		return;
	}

	priv->only_active_channel = 0;

C
Christoph Hellwig 已提交
7294
	iwl3945_set_rate(priv);
Z
Zhu Yi 已提交
7295 7296 7297 7298 7299 7300 7301

	mutex_unlock(&priv->mutex);

	IWL_DEBUG_MAC80211("leave\n");

}

C
Christoph Hellwig 已提交
7302
static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
Z
Zhu Yi 已提交
7303 7304
				 struct ieee80211_tx_control *control)
{
C
Christoph Hellwig 已提交
7305
	struct iwl3945_priv *priv = hw->priv;
Z
Zhu Yi 已提交
7306 7307 7308 7309 7310
	unsigned long flags;

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

C
Christoph Hellwig 已提交
7311
	if (!iwl3945_is_ready_rf(priv)) {
Z
Zhu Yi 已提交
7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334
		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
7335
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349

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

	mutex_unlock(&priv->mutex);

	return 0;
}

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

7350
#ifdef CONFIG_IWL3945_DEBUG
Z
Zhu Yi 已提交
7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361

/*
 * 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
7362
	return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
Z
Zhu Yi 已提交
7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374
}
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
7375
		iwl3945_debug_level = val;
Z
Zhu Yi 已提交
7376 7377 7378 7379 7380 7381 7382

	return strnlen(buf, count);
}

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

7383
#endif /* CONFIG_IWL3945_DEBUG */
Z
Zhu Yi 已提交
7384 7385 7386 7387 7388 7389 7390 7391 7392 7393

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
7394
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7395 7396 7397 7398 7399 7400 7401 7402 7403 7404
	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
7405
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7406 7407

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7408
	iwl3945_radio_kill_sw(priv, buf[0] == '1');
Z
Zhu Yi 已提交
7409 7410 7411 7412 7413 7414 7415 7416 7417 7418
	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
7419
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7420

C
Christoph Hellwig 已提交
7421
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7422 7423
		return -EAGAIN;

C
Christoph Hellwig 已提交
7424
	return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Z
Zhu Yi 已提交
7425 7426 7427 7428 7429 7430 7431 7432
}

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
7433 7434
	struct iwl3945_priv *priv = d->driver_data;
	return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
Z
Zhu Yi 已提交
7435 7436 7437 7438 7439 7440
}
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
7441
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7442 7443 7444 7445 7446 7447 7448
	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
7449
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7450 7451 7452 7453 7454 7455 7456 7457
	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
7458
		iwl3945_hw_reg_set_txpower(priv, val);
Z
Zhu Yi 已提交
7459 7460 7461 7462 7463 7464 7465 7466 7467

	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
7468
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7469 7470 7471 7472 7473 7474 7475 7476

	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
7477
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7478 7479 7480 7481 7482
	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
7483
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7484 7485 7486 7487 7488
			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
7489
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501
		}
	}
	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
7502
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7503 7504 7505 7506 7507 7508 7509 7510 7511

	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
7512
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
Z
Zhu Yi 已提交
7513 7514 7515 7516 7517
	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
7518
		if (iwl3945_scan_cancel_timeout(priv, 100))
Z
Zhu Yi 已提交
7519 7520 7521 7522 7523 7524
			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
7525
			iwl3945_commit_rxon(priv);
Z
Zhu Yi 已提交
7526 7527 7528 7529 7530 7531 7532 7533 7534 7535
		}
	}
	mutex_unlock(&priv->mutex);

	return count;
}

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

7536
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7537 7538 7539 7540

static ssize_t show_measurement(struct device *d,
				struct device_attribute *attr, char *buf)
{
C
Christoph Hellwig 已提交
7541 7542
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	struct iwl3945_spectrum_notification measure_report;
Z
Zhu Yi 已提交
7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573
	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
7574
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
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
	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
7600
	iwl3945_get_measurement(priv, &params, type);
Z
Zhu Yi 已提交
7601 7602 7603 7604 7605 7606

	return count;
}

static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
		   show_measurement, store_measurement);
7607
#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Z
Zhu Yi 已提交
7608 7609 7610 7611 7612

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
7613
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624

	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
7625
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7626 7627 7628 7629 7630 7631 7632 7633 7634 7635
	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
7636
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7637 7638 7639 7640 7641 7642
	int rc;
	int mode;

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

C
Christoph Hellwig 已提交
7643
	if (!iwl3945_is_ready(priv)) {
Z
Zhu Yi 已提交
7644 7645 7646 7647 7648 7649 7650 7651 7652 7653
		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
7654
		rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Z
Zhu Yi 已提交
7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689
		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
7690
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
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 7720 7721 7722 7723 7724
	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)
{
7725 7726
	/* all this shit doesn't belong into sysfs anyway */
	return 0;
Z
Zhu Yi 已提交
7727 7728 7729 7730 7731 7732 7733
}

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
7734 7735
	struct iwl3945_priv *priv = dev_get_drvdata(d);
	u32 size = sizeof(struct iwl3945_notif_statistics);
Z
Zhu Yi 已提交
7736 7737 7738 7739
	u32 len = 0, ofs = 0;
	u8 *data = (u8 *) & priv->statistics;
	int rc = 0;

C
Christoph Hellwig 已提交
7740
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7741 7742 7743
		return -EAGAIN;

	mutex_lock(&priv->mutex);
C
Christoph Hellwig 已提交
7744
	rc = iwl3945_send_statistics_request(priv);
Z
Zhu Yi 已提交
7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771
	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
7772
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7773

C
Christoph Hellwig 已提交
7774
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7775 7776 7777 7778 7779 7780 7781 7782 7783 7784
		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
7785
	struct iwl3945_priv *priv = dev_get_drvdata(d);
Z
Zhu Yi 已提交
7786 7787 7788 7789 7790 7791 7792 7793 7794 7795 7796

	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
7797
		priv->antenna = (enum iwl3945_antenna)ant;
Z
Zhu Yi 已提交
7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809
	} 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
7810 7811
	struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
	if (!iwl3945_is_alive(priv))
Z
Zhu Yi 已提交
7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824
		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
7825
		iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838

	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
7839
		iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
Z
Zhu Yi 已提交
7840 7841 7842 7843 7844 7845 7846 7847 7848 7849 7850 7851

	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
7852
static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7853 7854 7855 7856 7857
{
	priv->workqueue = create_workqueue(DRV_NAME);

	init_waitqueue_head(&priv->wait_command_queue);

C
Christoph Hellwig 已提交
7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871
	INIT_WORK(&priv->up, iwl3945_bg_up);
	INIT_WORK(&priv->restart, iwl3945_bg_restart);
	INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
	INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
	INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
	INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
	INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
	INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
	INIT_DELAYED_WORK(&priv->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
7872 7873

	tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
C
Christoph Hellwig 已提交
7874
		     iwl3945_irq_tasklet, (unsigned long)priv);
Z
Zhu Yi 已提交
7875 7876
}

C
Christoph Hellwig 已提交
7877
static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
Z
Zhu Yi 已提交
7878
{
C
Christoph Hellwig 已提交
7879
	iwl3945_hw_cancel_deferred_work(priv);
Z
Zhu Yi 已提交
7880

7881
	cancel_delayed_work_sync(&priv->init_alive_start);
Z
Zhu Yi 已提交
7882 7883 7884 7885 7886 7887
	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
7888
static struct attribute *iwl3945_sysfs_entries[] = {
Z
Zhu Yi 已提交
7889 7890 7891 7892 7893 7894
	&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,
7895
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Z
Zhu Yi 已提交
7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908 7909
	&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
7910
static struct attribute_group iwl3945_attribute_group = {
Z
Zhu Yi 已提交
7911
	.name = NULL,		/* put in device directory */
C
Christoph Hellwig 已提交
7912
	.attrs = iwl3945_sysfs_entries,
Z
Zhu Yi 已提交
7913 7914
};

C
Christoph Hellwig 已提交
7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931
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
7932 7933
};

C
Christoph Hellwig 已提交
7934
static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Z
Zhu Yi 已提交
7935 7936
{
	int err = 0;
C
Christoph Hellwig 已提交
7937
	struct iwl3945_priv *priv;
Z
Zhu Yi 已提交
7938
	struct ieee80211_hw *hw;
T
Tomas Winkler 已提交
7939
	struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
Z
Zhu Yi 已提交
7940
	int i;
7941
	DECLARE_MAC_BUF(mac);
Z
Zhu Yi 已提交
7942

7943 7944
	/* Disabling hardware scan means that mac80211 will perform scans
	 * "the hard way", rather than using device's scan. */
C
Christoph Hellwig 已提交
7945
	if (iwl3945_param_disable_hw_scan) {
Z
Zhu Yi 已提交
7946
		IWL_DEBUG_INFO("Disabling hw_scan\n");
C
Christoph Hellwig 已提交
7947
		iwl3945_hw_ops.hw_scan = NULL;
Z
Zhu Yi 已提交
7948 7949
	}

C
Christoph Hellwig 已提交
7950 7951
	if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
	    (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
Z
Zhu Yi 已提交
7952 7953 7954 7955 7956 7957 7958 7959
		IWL_ERROR("invalid queues_num, should be between %d and %d\n",
			  IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
		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
7960
	hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
Z
Zhu Yi 已提交
7961 7962 7963 7964 7965 7966 7967
	if (hw == NULL) {
		IWL_ERROR("Can not allocate network device\n");
		err = -ENOMEM;
		goto out;
	}
	SET_IEEE80211_DEV(hw, &pdev->dev);

7968 7969
	hw->rate_control_algorithm = "iwl-3945-rs";

Z
Zhu Yi 已提交
7970 7971 7972 7973 7974
	IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
	priv = hw->priv;
	priv->hw = hw;

	priv->pci_dev = pdev;
T
Tomas Winkler 已提交
7975
	priv->cfg = cfg;
7976 7977

	/* Select antenna (may be helpful if only one antenna is connected) */
C
Christoph Hellwig 已提交
7978
	priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
7979
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
7980
	iwl3945_debug_level = iwl3945_param_debug;
Z
Zhu Yi 已提交
7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998
	atomic_set(&priv->restrict_refcnt, 0);
#endif
	priv->retry_rate = 1;

	priv->ibss_beacon = NULL;

	/* Tell mac80211 and its clients (e.g. Wireless Extensions)
	 *   the range of signal quality values that we'll provide.
	 * Negative values for level/noise indicate that we'll provide dBm.
	 * For WE, at least, non-0 values here *enable* display of values
	 *   in app (iwconfig). */
	hw->max_rssi = -20;	/* signal level, negative indicates dBm */
	hw->max_noise = -20;	/* noise level, negative indicates dBm */
	hw->max_signal = 100;	/* link quality indication (%) */

	/* Tell mac80211 our Tx characteristics */
	hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;

7999
	/* 4 EDCA QOS priorities */
Z
Zhu Yi 已提交
8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019
	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);

8020
	/* Clear the driver's (not device's) station table */
C
Christoph Hellwig 已提交
8021
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8022 8023 8024 8025

	priv->data_retry_limit = -1;
	priv->ieee_channels = NULL;
	priv->ieee_rates = NULL;
8026
	priv->band = IEEE80211_BAND_2GHZ;
Z
Zhu Yi 已提交
8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039

	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;
8040

Z
Zhu Yi 已提交
8041 8042 8043
	/* 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);
8044

Z
Zhu Yi 已提交
8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056
	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 */

8057
	/* Disable radio (SW RF KILL) via parameter when loading driver */
C
Christoph Hellwig 已提交
8058
	if (iwl3945_param_disable) {
Z
Zhu Yi 已提交
8059 8060 8061 8062 8063 8064 8065
		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
8066
		": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
Z
Zhu Yi 已提交
8067 8068

	/* Device-specific setup */
C
Christoph Hellwig 已提交
8069
	if (iwl3945_hw_set_hw_setting(priv)) {
Z
Zhu Yi 已提交
8070 8071 8072 8073
		IWL_ERROR("failed to set hw settings\n");
		goto out_iounmap;
	}

C
Christoph Hellwig 已提交
8074
	if (iwl3945_param_qos_enable)
Z
Zhu Yi 已提交
8075 8076
		priv->qos_data.qos_enable = 1;

C
Christoph Hellwig 已提交
8077
	iwl3945_reset_qos(priv);
Z
Zhu Yi 已提交
8078 8079 8080 8081

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

8082
	iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
C
Christoph Hellwig 已提交
8083 8084
	iwl3945_setup_deferred_work(priv);
	iwl3945_setup_rx_handlers(priv);
Z
Zhu Yi 已提交
8085 8086 8087 8088 8089 8090

	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;

C
Christoph Hellwig 已提交
8091
	iwl3945_disable_interrupts(priv);
8092

C
Christoph Hellwig 已提交
8093
	err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8094 8095 8096 8097 8098
	if (err) {
		IWL_ERROR("failed to create sysfs device attributes\n");
		goto out_release_irq;
	}

8099 8100 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112
	/* 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
8113
	if (err) {
8114 8115
		IWL_ERROR("Unable to init EEPROM\n");
		goto out_remove_sysfs;
Z
Zhu Yi 已提交
8116
	}
8117 8118 8119 8120
	/* 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
8121

8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133
	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;
	}

8134 8135 8136 8137
	iwl3945_rate_control_register(priv->hw);
	err = ieee80211_register_hw(priv->hw);
	if (err) {
		IWL_ERROR("Failed to register network device (error %d)\n", err);
8138
		goto out_free_geos;
8139
	}
Z
Zhu Yi 已提交
8140

8141 8142 8143 8144
	priv->hw->conf.beacon_int = 100;
	priv->mac80211_registered = 1;
	pci_save_state(pdev);
	pci_disable_device(pdev);
Z
Zhu Yi 已提交
8145 8146 8147

	return 0;

8148 8149 8150 8151
 out_free_geos:
	iwl3945_free_geos(priv);
 out_free_channel_map:
	iwl3945_free_channel_map(priv);
8152
 out_remove_sysfs:
C
Christoph Hellwig 已提交
8153
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8154 8155 8156 8157

 out_release_irq:
	destroy_workqueue(priv->workqueue);
	priv->workqueue = NULL;
C
Christoph Hellwig 已提交
8158
	iwl3945_unset_hw_setting(priv);
Z
Zhu Yi 已提交
8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172

 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;
}

C
Christoph Hellwig 已提交
8173
static void iwl3945_pci_remove(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8174
{
C
Christoph Hellwig 已提交
8175
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8176 8177 8178 8179 8180 8181 8182 8183 8184
	struct list_head *p, *q;
	int i;

	if (!priv)
		return;

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

	set_bit(STATUS_EXIT_PENDING, &priv->status);
8185

C
Christoph Hellwig 已提交
8186
	iwl3945_down(priv);
Z
Zhu Yi 已提交
8187 8188 8189 8190 8191

	/* 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
8192
			kfree(list_entry(p, struct iwl3945_ibss_seq, list));
Z
Zhu Yi 已提交
8193 8194 8195
		}
	}

C
Christoph Hellwig 已提交
8196
	sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Z
Zhu Yi 已提交
8197

C
Christoph Hellwig 已提交
8198
	iwl3945_dealloc_ucode_pci(priv);
Z
Zhu Yi 已提交
8199 8200

	if (priv->rxq.bd)
C
Christoph Hellwig 已提交
8201 8202
		iwl3945_rx_queue_free(priv, &priv->rxq);
	iwl3945_hw_txq_ctx_free(priv);
Z
Zhu Yi 已提交
8203

C
Christoph Hellwig 已提交
8204 8205
	iwl3945_unset_hw_setting(priv);
	iwl3945_clear_stations_table(priv);
Z
Zhu Yi 已提交
8206 8207 8208

	if (priv->mac80211_registered) {
		ieee80211_unregister_hw(priv->hw);
C
Christoph Hellwig 已提交
8209
		iwl3945_rate_control_unregister(priv->hw);
Z
Zhu Yi 已提交
8210 8211
	}

8212 8213 8214
	/*netif_stop_queue(dev); */
	flush_workqueue(priv->workqueue);

C
Christoph Hellwig 已提交
8215
	/* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Z
Zhu Yi 已提交
8216 8217 8218 8219 8220 8221 8222 8223 8224 8225
	 * 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);

8226 8227
	iwl3945_free_channel_map(priv);
	iwl3945_free_geos(priv);
Z
Zhu Yi 已提交
8228 8229 8230 8231 8232 8233 8234 8235 8236

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

	ieee80211_free_hw(priv->hw);
}

#ifdef CONFIG_PM

C
Christoph Hellwig 已提交
8237
static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Z
Zhu Yi 已提交
8238
{
C
Christoph Hellwig 已提交
8239
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8240

8241 8242 8243 8244 8245
	if (priv->is_open) {
		set_bit(STATUS_IN_SUSPEND, &priv->status);
		iwl3945_mac_stop(priv->hw);
		priv->is_open = 1;
	}
Z
Zhu Yi 已提交
8246 8247 8248 8249 8250 8251

	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

C
Christoph Hellwig 已提交
8252
static int iwl3945_pci_resume(struct pci_dev *pdev)
Z
Zhu Yi 已提交
8253
{
C
Christoph Hellwig 已提交
8254
	struct iwl3945_priv *priv = pci_get_drvdata(pdev);
Z
Zhu Yi 已提交
8255 8256 8257

	pci_set_power_state(pdev, PCI_D0);

8258 8259
	if (priv->is_open)
		iwl3945_mac_start(priv->hw);
Z
Zhu Yi 已提交
8260

8261
	clear_bit(STATUS_IN_SUSPEND, &priv->status);
Z
Zhu Yi 已提交
8262 8263 8264 8265 8266 8267 8268 8269 8270 8271 8272
	return 0;
}

#endif /* CONFIG_PM */

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

C
Christoph Hellwig 已提交
8273
static struct pci_driver iwl3945_driver = {
Z
Zhu Yi 已提交
8274
	.name = DRV_NAME,
C
Christoph Hellwig 已提交
8275 8276 8277
	.id_table = iwl3945_hw_card_ids,
	.probe = iwl3945_pci_probe,
	.remove = __devexit_p(iwl3945_pci_remove),
Z
Zhu Yi 已提交
8278
#ifdef CONFIG_PM
C
Christoph Hellwig 已提交
8279 8280
	.suspend = iwl3945_pci_suspend,
	.resume = iwl3945_pci_resume,
Z
Zhu Yi 已提交
8281 8282 8283
#endif
};

C
Christoph Hellwig 已提交
8284
static int __init iwl3945_init(void)
Z
Zhu Yi 已提交
8285 8286 8287 8288 8289
{

	int ret;
	printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
	printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
C
Christoph Hellwig 已提交
8290
	ret = pci_register_driver(&iwl3945_driver);
Z
Zhu Yi 已提交
8291 8292 8293 8294
	if (ret) {
		IWL_ERROR("Unable to initialize PCI module\n");
		return ret;
	}
8295
#ifdef CONFIG_IWL3945_DEBUG
C
Christoph Hellwig 已提交
8296
	ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
Z
Zhu Yi 已提交
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	if (ret) {
		IWL_ERROR("Unable to create driver sysfs file\n");
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		pci_unregister_driver(&iwl3945_driver);
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		return ret;
	}
#endif

	return ret;
}

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static void __exit iwl3945_exit(void)
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{
8309
#ifdef CONFIG_IWL3945_DEBUG
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	driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
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#endif
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	pci_unregister_driver(&iwl3945_driver);
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}

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module_param_named(antenna, iwl3945_param_antenna, int, 0444);
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MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
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module_param_named(disable, iwl3945_param_disable, int, 0444);
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MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
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module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
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MODULE_PARM_DESC(hwcrypto,
		 "using hardware crypto engine (default 0 [software])\n");
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module_param_named(debug, iwl3945_param_debug, int, 0444);
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MODULE_PARM_DESC(debug, "debug output mask");
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module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
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MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");

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module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
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MODULE_PARM_DESC(queues_num, "number of hw queues.");

/* QoS */
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module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
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MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");

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module_exit(iwl3945_exit);
module_init(iwl3945_init);