drivers/net/wireless/atmel_cs.c - maze/linux - Git at Google

 /*** -*- linux-c -*- **********************************************************

      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.

         Copyright 2000-2001 ATMEL Corporation.
         Copyright 2003 Simon Kelley.

     This code was developed from version 2.1.1 of the Atmel drivers,
     released by Atmel corp. under the GPL in December 2002. It also
     includes code from the Linux aironet drivers (C) Benjamin Reed,
     and the Linux PCMCIA package, (C) David Hinds.

     For all queries about this code, please contact the current author,
     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.

     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.

     This software 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 Atmel wireless lan drivers; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 ******************************************************************************/

 #ifdef __IN_PCMCIA_PACKAGE__
 #include <pcmcia/k_compat.h>
 #endif
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/ptrace.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/netdevice.h>
 #include <linux/moduleparam.h>
 #include <linux/device.h>

 #include <pcmcia/cistpl.h>
 #include <pcmcia/cisreg.h>
 #include <pcmcia/ds.h>
 #include <pcmcia/ciscode.h>

 #include <asm/io.h>
 #include <linux/wireless.h>

 #include "atmel.h"


 /*====================================================================*/

 MODULE_AUTHOR("Simon Kelley");
 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");

 /*====================================================================*/

 static int atmel_config(struct pcmcia_device *link);
 static void atmel_release(struct pcmcia_device *link);

 static void atmel_detach(struct pcmcia_device *p_dev);

 typedef struct local_info_t {
 	struct net_device *eth_dev;
 } local_info_t;

 static int atmel_probe(struct pcmcia_device *p_dev)
 {
 	local_info_t *local;

 	dev_dbg(&p_dev->dev, "atmel_attach()\n");

 	/* Allocate space for private device-specific data */
 	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
 	if (!local)
 		return -ENOMEM;

 	p_dev->priv = local;

 	return atmel_config(p_dev);
 } /* atmel_attach */

 static void atmel_detach(struct pcmcia_device *link)
 {
 	dev_dbg(&link->dev, "atmel_detach\n");

 	atmel_release(link);

 	kfree(link->priv);
 }

 /* Call-back function to interrogate PCMCIA-specific information
    about the current existence of the card */
 static int card_present(void *arg)
 {
 	struct pcmcia_device *link = (struct pcmcia_device *)arg;

 	if (pcmcia_dev_present(link))
 		return 1;

 	return 0;
 }

 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 {
 	if (p_dev->config_index == 0)
 		return -EINVAL;

 	return pcmcia_request_io(p_dev);
 }

 static int atmel_config(struct pcmcia_device *link)
 {
 	local_info_t *dev;
 	int ret;
 	const struct pcmcia_device_id *did;

 	dev = link->priv;
 	did = dev_get_drvdata(&link->dev);

 	dev_dbg(&link->dev, "atmel_config\n");

 	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 		CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;

 	if (pcmcia_loop_config(link, atmel_config_check, NULL))
 		goto failed;

 	if (!link->irq) {
 		dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 		goto failed;
 	}

 	ret = pcmcia_enable_device(link);
 	if (ret)
 		goto failed;

 	((local_info_t*)link->priv)->eth_dev =
 		init_atmel_card(link->irq,
 				link->resource[0]->start,
 				did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 				&link->dev,
 				card_present,
 				link);
 	if (!((local_info_t*)link->priv)->eth_dev)
 			goto failed;


 	return 0;

  failed:
 	atmel_release(link);
 	return -ENODEV;
 }

 static void atmel_release(struct pcmcia_device *link)
 {
 	struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;

 	dev_dbg(&link->dev, "atmel_release\n");

 	if (dev)
 		stop_atmel_card(dev);
 	((local_info_t*)link->priv)->eth_dev = NULL;

 	pcmcia_disable_device(link);
 }

 static int atmel_suspend(struct pcmcia_device *link)
 {
 	local_info_t *local = link->priv;

 	netif_device_detach(local->eth_dev);

 	return 0;
 }

 static int atmel_resume(struct pcmcia_device *link)
 {
 	local_info_t *local = link->priv;

 	atmel_open(local->eth_dev);
 	netif_device_attach(local->eth_dev);

 	return 0;
 }

 /*====================================================================*/
 /* We use the driver_info field to store the correct firmware type for a card. */

 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 	.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 			PCMCIA_DEV_ID_MATCH_CARD_ID, \
 	.manf_id = (manf), \
 	.card_id = (card), \
         .driver_info = (kernel_ulong_t)(info), }

 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 	.match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 			PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 	.prod_id = { (v1), (v2), NULL, NULL }, \
 	.prod_id_hash = { (vh1), (vh2), 0, 0 }, \
         .driver_info = (kernel_ulong_t)(info), }

 static const struct pcmcia_device_id atmel_ids[] = {
 	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 	PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 	PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 	PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 	PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 	PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 	PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 	PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 	PCMCIA_DEVICE_NULL
 };

 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);

 static struct pcmcia_driver atmel_driver = {
 	.owner		= THIS_MODULE,
 	.name		= "atmel_cs",
 	.probe          = atmel_probe,
 	.remove		= atmel_detach,
 	.id_table	= atmel_ids,
 	.suspend	= atmel_suspend,
 	.resume		= atmel_resume,
 };
 module_pcmcia_driver(atmel_driver);

 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.

     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.

     In addition:

     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
     are met:

     1. Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.
     2. Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
     3. The name of the author may not be used to endorse or promote
        products derived from this software without specific prior written
        permission.

     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.
 */
	/*** -- linux-c -- **********************************************************

	Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.

	Copyright 2000-2001 ATMEL Corporation.
	Copyright 2003 Simon Kelley.

	This code was developed from version 2.1.1 of the Atmel drivers,
	released by Atmel corp. under the GPL in December 2002. It also
	includes code from the Linux aironet drivers (C) Benjamin Reed,
	and the Linux PCMCIA package, (C) David Hinds.

	For all queries about this code, please contact the current author,
	Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This software 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 Atmel wireless lan drivers; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	******************************************************************************/

	#ifdef __IN_PCMCIA_PACKAGE__
	#include <pcmcia/k_compat.h>
	#endif
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/ptrace.h>
	#include <linux/slab.h>
	#include <linux/string.h>
	#include <linux/netdevice.h>
	#include <linux/moduleparam.h>
	#include <linux/device.h>

	#include <pcmcia/cistpl.h>
	#include <pcmcia/cisreg.h>
	#include <pcmcia/ds.h>
	#include <pcmcia/ciscode.h>

	#include <asm/io.h>
	#include <linux/wireless.h>

	#include "atmel.h"


	/====================================================================/

	MODULE_AUTHOR("Simon Kelley");
	MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
	MODULE_LICENSE("GPL");
	MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");

	/====================================================================/

	static int atmel_config(struct pcmcia_device *link);
	static void atmel_release(struct pcmcia_device *link);

	static void atmel_detach(struct pcmcia_device *p_dev);

	typedef struct local_info_t {
	struct net_device *eth_dev;
	} local_info_t;

	static int atmel_probe(struct pcmcia_device *p_dev)
	{
	local_info_t *local;

	dev_dbg(&p_dev->dev, "atmel_attach()\n");

	/* Allocate space for private device-specific data */
	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
	if (!local)
	return -ENOMEM;

	p_dev->priv = local;

	return atmel_config(p_dev);
	} /* atmel_attach */

	static void atmel_detach(struct pcmcia_device *link)
	{
	dev_dbg(&link->dev, "atmel_detach\n");

	atmel_release(link);

	kfree(link->priv);
	}

	/* Call-back function to interrogate PCMCIA-specific information
	about the current existence of the card */
	static int card_present(void *arg)
	{
	struct pcmcia_device link = (struct pcmcia_device )arg;

	if (pcmcia_dev_present(link))
	return 1;

	return 0;
	}

	static int atmel_config_check(struct pcmcia_device p_dev, void priv_data)
	{
	if (p_dev->config_index == 0)
	return -EINVAL;

	return pcmcia_request_io(p_dev);
	}

	static int atmel_config(struct pcmcia_device *link)
	{
	local_info_t *dev;
	int ret;
	const struct pcmcia_device_id *did;

	dev = link->priv;
	did = dev_get_drvdata(&link->dev);

	dev_dbg(&link->dev, "atmel_config\n");

	link->config_flags \|= CONF_ENABLE_IRQ \| CONF_AUTO_SET_VPP \|
	CONF_AUTO_AUDIO \| CONF_AUTO_SET_IO;

	if (pcmcia_loop_config(link, atmel_config_check, NULL))
	goto failed;

	if (!link->irq) {
	dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
	goto failed;
	}

	ret = pcmcia_enable_device(link);
	if (ret)
	goto failed;

	((local_info_t*)link->priv)->eth_dev =
	init_atmel_card(link->irq,
	link->resource[0]->start,
	did ? did->driver_info : ATMEL_FW_TYPE_NONE,
	&link->dev,
	card_present,
	link);
	if (!((local_info_t*)link->priv)->eth_dev)
	goto failed;


	return 0;

	failed:
	atmel_release(link);
	return -ENODEV;
	}

	static void atmel_release(struct pcmcia_device *link)
	{
	struct net_device dev = ((local_info_t)link->priv)->eth_dev;

	dev_dbg(&link->dev, "atmel_release\n");

	if (dev)
	stop_atmel_card(dev);
	((local_info_t*)link->priv)->eth_dev = NULL;

	pcmcia_disable_device(link);
	}

	static int atmel_suspend(struct pcmcia_device *link)
	{
	local_info_t *local = link->priv;

	netif_device_detach(local->eth_dev);

	return 0;
	}

	static int atmel_resume(struct pcmcia_device *link)
	{
	local_info_t *local = link->priv;

	atmel_open(local->eth_dev);
	netif_device_attach(local->eth_dev);

	return 0;
	}

	/====================================================================/
	/* We use the driver_info field to store the correct firmware type for a card. */

	#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
	.match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID\| \
	PCMCIA_DEV_ID_MATCH_CARD_ID, \
	.manf_id = (manf), \
	.card_id = (card), \
	.driver_info = (kernel_ulong_t)(info), }

	#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
	.match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1\| \
	PCMCIA_DEV_ID_MATCH_PROD_ID2, \
	.prod_id = { (v1), (v2), NULL, NULL }, \
	.prod_id_hash = { (vh1), (vh2), 0, 0 }, \
	.driver_info = (kernel_ulong_t)(info), }

	static const struct pcmcia_device_id atmel_ids[] = {
	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
	PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
	PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
	PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
	PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
	PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
	PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
	PCMCIA_DEVICE_NULL
	};

	MODULE_DEVICE_TABLE(pcmcia, atmel_ids);

	static struct pcmcia_driver atmel_driver = {
	.owner = THIS_MODULE,
	.name = "atmel_cs",
	.probe = atmel_probe,
	.remove = atmel_detach,
	.id_table = atmel_ids,
	.suspend = atmel_suspend,
	.resume = atmel_resume,
	};
	module_pcmcia_driver(atmel_driver);

	/*
	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	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.

	In addition:

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:

	1. Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.
	2. Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.
	3. The name of the author may not be used to endorse or promote
	products derived from this software without specific prior written
	permission.

	THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
	INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.
	*/