Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 708 insertions, 0 deletions

diff --git a/drivers/net/wireless/atmel_cs.c b/drivers/net/wireless/atmel_cs.c
new file mode 100644
index 00000000000..a91b507e0a7
--- /dev/null
+++ b/drivers/net/wireless/atmel_cs.c
@@ -0,0 +1,708 @@
+/*** -*- 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
+
+******************************************************************************/
+
+#include <linux/config.h>
+#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/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/ciscode.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+#include <linux/wireless.h>
+
+#include "atmel.h"
+
+/*
+   All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If
+   you do not define PCMCIA_DEBUG at all, all the debug code will be
+   left out.  If you compile with PCMCIA_DEBUG=0, the debug code will
+   be present but disabled -- but it can then be enabled for specific
+   modules at load time with a 'pc_debug=#' option to insmod.
+*/
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0);
+static char *version = "$Revision: 1.2 $";
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+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");
+
+/*====================================================================*/
+
+/*
+   The event() function is this driver's Card Services event handler.
+   It will be called by Card Services when an appropriate card status
+   event is received.  The config() and release() entry points are
+   used to configure or release a socket, in response to card
+   insertion and ejection events.  They are invoked from the atmel_cs
+   event handler. 
+*/
+
+static void atmel_config(dev_link_t *link);
+static void atmel_release(dev_link_t *link);
+static int atmel_event(event_t event, int priority,
+		       event_callback_args_t *args);
+
+/*
+   The attach() and detach() entry points are used to create and destroy
+   "instances" of the driver, where each instance represents everything
+   needed to manage one actual PCMCIA card.
+*/
+
+static dev_link_t *atmel_attach(void);
+static void atmel_detach(dev_link_t *);
+
+/*
+   You'll also need to prototype all the functions that will actually
+   be used to talk to your device.  See 'pcmem_cs' for a good example
+   of a fully self-sufficient driver; the other drivers rely more or
+   less on other parts of the kernel.
+*/
+
+/*
+   The dev_info variable is the "key" that is used to match up this
+   device driver with appropriate cards, through the card configuration
+   database.
+*/
+
+static dev_info_t dev_info = "atmel_cs";
+
+/*
+   A linked list of "instances" of the  atmelnet device.  Each actual
+   PCMCIA card corresponds to one device instance, and is described
+   by one dev_link_t structure (defined in ds.h).
+
+   You may not want to use a linked list for this -- for example, the
+   memory card driver uses an array of dev_link_t pointers, where minor
+   device numbers are used to derive the corresponding array index.
+*/
+
+static dev_link_t *dev_list = NULL;
+
+/*
+   A dev_link_t structure has fields for most things that are needed
+   to keep track of a socket, but there will usually be some device
+   specific information that also needs to be kept track of.  The
+   'priv' pointer in a dev_link_t structure can be used to point to
+   a device-specific private data structure, like this.
+
+   A driver needs to provide a dev_node_t structure for each device
+   on a card.  In some cases, there is only one device per card (for
+   example, ethernet cards, modems).  In other cases, there may be
+   many actual or logical devices (SCSI adapters, memory cards with
+   multiple partitions).  The dev_node_t structures need to be kept
+   in a linked list starting at the 'dev' field of a dev_link_t
+   structure.  We allocate them in the card's private data structure,
+   because they generally shouldn't be allocated dynamically.
+
+   In this case, we also provide a flag to indicate if a device is
+   "stopped" due to a power management event, or card ejection.  The
+   device IO routines can use a flag like this to throttle IO to a
+   card that is not ready to accept it.
+*/
+   
+typedef struct local_info_t {
+	dev_node_t	node;
+	struct net_device *eth_dev;
+} local_info_t;
+
+/*======================================================================
+  
+  atmel_attach() creates an "instance" of the driver, allocating
+  local data structures for one device.  The device is registered
+  with Card Services.
+  
+  The dev_link structure is initialized, but we don't actually
+  configure the card at this point -- we wait until we receive a
+  card insertion event.
+  
+  ======================================================================*/
+
+static dev_link_t *atmel_attach(void)
+{
+	client_reg_t client_reg;
+	dev_link_t *link;
+	local_info_t *local;
+	int ret;
+	
+	DEBUG(0, "atmel_attach()\n");
+
+	/* Initialize the dev_link_t structure */
+	link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+	if (!link) {
+		printk(KERN_ERR "atmel_cs: no memory for new device\n");
+		return NULL;
+	}
+	memset(link, 0, sizeof(struct dev_link_t));
+	
+	/* Interrupt setup */
+	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+	link->irq.Handler = NULL;
+	
+	/*
+	  General socket configuration defaults can go here.  In this
+	  client, we assume very little, and rely on the CIS for almost
+	  everything.  In most clients, many details (i.e., number, sizes,
+	  and attributes of IO windows) are fixed by the nature of the
+	  device, and can be hard-wired here.
+	*/
+	link->conf.Attributes = 0;
+	link->conf.Vcc = 50;
+	link->conf.IntType = INT_MEMORY_AND_IO;
+	
+	/* Allocate space for private device-specific data */
+	local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
+	if (!local) {
+		printk(KERN_ERR "atmel_cs: no memory for new device\n");
+		kfree (link);
+		return NULL;
+	}
+	memset(local, 0, sizeof(local_info_t));
+	link->priv = local;
+	
+	/* Register with Card Services */
+	link->next = dev_list;
+	dev_list = link;
+	client_reg.dev_info = &dev_info;
+	client_reg.EventMask =
+		CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+		CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+		CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+	client_reg.event_handler = &atmel_event;
+	client_reg.Version = 0x0210;
+	client_reg.event_callback_args.client_data = link;
+	ret = pcmcia_register_client(&link->handle, &client_reg);
+	if (ret != 0) {
+		cs_error(link->handle, RegisterClient, ret);
+		atmel_detach(link);
+		return NULL;
+	}
+	
+	return link;
+} /* atmel_attach */
+
+/*======================================================================
+  
+  This deletes a driver "instance".  The device is de-registered
+  with Card Services.  If it has been released, all local data
+  structures are freed.  Otherwise, the structures will be freed
+  when the device is released.
+  
+  ======================================================================*/
+
+static void atmel_detach(dev_link_t *link)
+{
+	dev_link_t **linkp;
+	
+	DEBUG(0, "atmel_detach(0x%p)\n", link);
+	
+	/* Locate device structure */
+	for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+		if (*linkp == link) break;
+	if (*linkp == NULL)
+		return;
+
+	if (link->state & DEV_CONFIG)
+		atmel_release(link);
+		
+	/* Break the link with Card Services */
+	if (link->handle)
+		pcmcia_deregister_client(link->handle);
+
+	/* Unlink device structure, free pieces */
+	*linkp = link->next;
+	if (link->priv)
+		kfree(link->priv);
+	kfree(link);
+}
+
+/*======================================================================
+  
+  atmel_config() is scheduled to run after a CARD_INSERTION event
+  is received, to configure the PCMCIA socket, and to make the
+  device available to the system.
+  
+  ======================================================================*/
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+/* Call-back function to interrogate PCMCIA-specific information
+   about the current existance of the card */
+static int card_present(void *arg)
+{ 
+	dev_link_t *link = (dev_link_t *)arg;
+	if (link->state & DEV_SUSPEND)
+		return 0;
+	else if (link->state & DEV_PRESENT)
+		return 1;
+	
+	return 0;
+}
+
+/* list of cards we know about and their firmware requirements.
+   Go either by Manfid or version strings.
+   Cards not in this list will need a firmware parameter to the module
+   in all probability. Note that the SMC 2632 V2 and V3 have the same
+   manfids, so we ignore those and use the version1 strings. */
+
+static struct { 
+	int manf, card;
+	char *ver1;
+	AtmelFWType firmware;
+	char *name;
+} card_table[] = {
+	{ 0, 0, "WLAN/802.11b PC CARD", ATMEL_FW_TYPE_502D, "Actiontec 802CAT1" },  
+	{ 0, 0, "ATMEL/AT76C502AR", ATMEL_FW_TYPE_502, "NoName-RFMD" }, 
+	{ 0, 0, "ATMEL/AT76C502AR_D", ATMEL_FW_TYPE_502D, "NoName-revD" }, 
+	{ 0, 0, "ATMEL/AT76C502AR_E", ATMEL_FW_TYPE_502E, "NoName-revE" },
+	{ 0, 0, "ATMEL/AT76C504", ATMEL_FW_TYPE_504, "NoName-504" },
+	{ 0, 0, "ATMEL/AT76C504A", ATMEL_FW_TYPE_504A_2958, "NoName-504a-2958" },
+	{ 0, 0, "ATMEL/AT76C504_R", ATMEL_FW_TYPE_504_2958, "NoName-504-2958" },
+	{ MANFID_3COM, 0x0620, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRWE62092B" }, 
+	{ MANFID_3COM, 0x0696, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRSHPW196" }, 
+	{ 0, 0, "SMC/2632W-V2", ATMEL_FW_TYPE_502, "SMC 2632W-V2" },
+	{ 0, 0, "SMC/2632W", ATMEL_FW_TYPE_502D, "SMC 2632W-V3" },
+	{ 0xd601, 0x0007, NULL, ATMEL_FW_TYPE_502, "Sitecom WLAN-011" }, 
+	{ 0x01bf, 0x3302, NULL, ATMEL_FW_TYPE_502E, "Belkin F5D6020-V2" }, 
+	{ 0, 0, "BT/Voyager 1020 Laptop Adapter", ATMEL_FW_TYPE_502, "BT Voyager 1020" },
+	{ 0, 0, "IEEE 802.11b/Wireless LAN PC Card", ATMEL_FW_TYPE_502, "Siemens Gigaset PC Card II" },
+	{ 0, 0, "CNet/CNWLC 11Mbps Wireless PC Card V-5", ATMEL_FW_TYPE_502E, "CNet CNWLC-811ARL" },
+	{ 0, 0, "Wireless/PC_CARD", ATMEL_FW_TYPE_502D, "Planet WL-3552" },
+	{ 0, 0, "OEM/11Mbps Wireless LAN PC Card V-3", ATMEL_FW_TYPE_502, "OEM 11Mbps WLAN PCMCIA Card" },
+	{ 0, 0, "11WAVE/11WP611AL-E", ATMEL_FW_TYPE_502E, "11WAVE WaveBuddy" },
+	{ 0, 0, "LG/LW2100N", ATMEL_FW_TYPE_502E, "LG LW2100N 11Mbps WLAN PCMCIA Card" },
+};
+
+static void atmel_config(dev_link_t *link)
+{
+	client_handle_t handle;
+	tuple_t tuple;
+	cisparse_t parse;
+	local_info_t *dev;
+	int last_fn, last_ret;
+	u_char buf[64];
+	int card_index = -1, done = 0;
+	
+	handle = link->handle;
+	dev = link->priv;
+
+	DEBUG(0, "atmel_config(0x%p)\n", link);
+	
+	tuple.Attributes = 0;
+	tuple.TupleData = buf;
+	tuple.TupleDataMax = sizeof(buf);
+	tuple.TupleOffset = 0;
+	
+	tuple.DesiredTuple = CISTPL_MANFID;
+	if (pcmcia_get_first_tuple(handle, &tuple) == 0) {
+		int i;
+		cistpl_manfid_t *manfid;
+		CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+		CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+		manfid = &(parse.manfid);
+		for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
+			if (!card_table[i].ver1 &&
+			    manfid->manf == card_table[i].manf &&
+			    manfid->card == card_table[i].card) {
+				card_index = i;
+				done = 1;
+			}
+		}
+	}
+
+	tuple.DesiredTuple = CISTPL_VERS_1;
+	if (!done && (pcmcia_get_first_tuple(handle, &tuple) == 0)) {
+		int i, j, k;
+		cistpl_vers_1_t *ver1;
+		CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+		CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+		ver1 = &(parse.version_1);
+		
+		for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
+			for (j = 0; j < ver1->ns; j++) {
+				char *p = card_table[i].ver1;
+				char *q = &ver1->str[ver1->ofs[j]];
+				if (!p)
+					goto mismatch;
+				for (k = 0; k < j; k++) {
+					while ((*p != '\0') && (*p != '/')) p++;
+					if (*p == '\0') {
+						if (*q != '\0')
+							goto mismatch;
+					} else {
+						p++;
+					}
+				}
+				while((*q != '\0') && (*p != '\0') && 
+				      (*p != '/') && (*p == *q)) p++, q++;
+				if (((*p != '\0') && *p != '/') || *q != '\0')
+					goto mismatch;
+			}
+			card_index = i;
+			break;	/* done */
+			
+		mismatch:
+			j = 0; /* dummy stmt to shut up compiler */
+		}
+	}		
+
+	/*
+	  This reads the card's CONFIG tuple to find its configuration
+	  registers.
+	*/
+	tuple.DesiredTuple = CISTPL_CONFIG;
+	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+	CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+	CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+	link->conf.ConfigBase = parse.config.base;
+	link->conf.Present = parse.config.rmask[0];
+	
+	/* Configure card */
+	link->state |= DEV_CONFIG;
+	
+	/*
+	  In this loop, we scan the CIS for configuration table entries,
+	  each of which describes a valid card configuration, including
+	  voltage, IO window, memory window, and interrupt settings.
+	  
+	  We make no assumptions about the card to be configured: we use
+	  just the information available in the CIS.  In an ideal world,
+	  this would work for any PCMCIA card, but it requires a complete
+	  and accurate CIS.  In practice, a driver usually "knows" most of
+	  these things without consulting the CIS, and most client drivers
+	  will only use the CIS to fill in implementation-defined details.
+	*/
+	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+	while (1) {
+		cistpl_cftable_entry_t dflt = { 0 };
+		cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+		if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
+				pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
+			goto next_entry;
+		
+		if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
+		if (cfg->index == 0) goto next_entry;
+		link->conf.ConfigIndex = cfg->index;
+		
+		/* Does this card need audio output? */
+		if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+			link->conf.Attributes |= CONF_ENABLE_SPKR;
+			link->conf.Status = CCSR_AUDIO_ENA;
+		}
+		
+		/* Use power settings for Vcc and Vpp if present */
+		/*  Note that the CIS values need to be rescaled */
+		if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
+			link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
+		else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
+			link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
+		
+		if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
+			link->conf.Vpp1 = link->conf.Vpp2 =
+				cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
+		else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
+			link->conf.Vpp1 = link->conf.Vpp2 =
+				dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
+		
+		/* Do we need to allocate an interrupt? */
+		if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
+			link->conf.Attributes |= CONF_ENABLE_IRQ;
+		
+		/* IO window settings */
+		link->io.NumPorts1 = link->io.NumPorts2 = 0;
+		if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+			cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+			link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+			if (!(io->flags & CISTPL_IO_8BIT))
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+			if (!(io->flags & CISTPL_IO_16BIT))
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+			link->io.BasePort1 = io->win[0].base;
+			link->io.NumPorts1 = io->win[0].len;
+			if (io->nwin > 1) {
+				link->io.Attributes2 = link->io.Attributes1;
+				link->io.BasePort2 = io->win[1].base;
+				link->io.NumPorts2 = io->win[1].len;
+			}
+		}
+		
+		/* This reserves IO space but doesn't actually enable it */
+		if (pcmcia_request_io(link->handle, &link->io) != 0)
+			goto next_entry;
+
+		/* If we got this far, we're cool! */
+		break;
+		
+	next_entry:
+		CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
+	}
+	
+	/*
+	  Allocate an interrupt line.  Note that this does not assign a
+	  handler to the interrupt, unless the 'Handler' member of the
+	  irq structure is initialized.
+	*/
+	if (link->conf.Attributes & CONF_ENABLE_IRQ)
+		CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+	
+	/*
+	  This actually configures the PCMCIA socket -- setting up
+	  the I/O windows and the interrupt mapping, and putting the
+	  card and host interface into "Memory and IO" mode.
+	*/
+	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+	
+	if (link->irq.AssignedIRQ == 0) {
+		printk(KERN_ALERT 
+		       "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
+		goto cs_failed;
+	}
+       
+	((local_info_t*)link->priv)->eth_dev = 
+		init_atmel_card(link->irq.AssignedIRQ,
+				link->io.BasePort1,
+				card_index == -1 ? ATMEL_FW_TYPE_NONE :  card_table[card_index].firmware,
+				&handle_to_dev(handle),
+				card_present, 
+				link);
+	if (!((local_info_t*)link->priv)->eth_dev) 
+		goto cs_failed;
+	
+	/*
+	  At this point, the dev_node_t structure(s) need to be
+	  initialized and arranged in a linked list at link->dev.
+	*/
+	strcpy(dev->node.dev_name, ((local_info_t*)link->priv)->eth_dev->name );
+	dev->node.major = dev->node.minor = 0;
+	link->dev = &dev->node;
+	
+	/* Finally, report what we've done */
+	printk(KERN_INFO "%s: %s%sindex 0x%02x: Vcc %d.%d",
+	       dev->node.dev_name,
+	       card_index == -1 ? "" :  card_table[card_index].name,
+	       card_index == -1 ? "" : " ",
+	       link->conf.ConfigIndex,
+	       link->conf.Vcc/10, link->conf.Vcc%10);
+	if (link->conf.Vpp1)
+		printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
+	if (link->conf.Attributes & CONF_ENABLE_IRQ)
+		printk(", irq %d", link->irq.AssignedIRQ);
+	if (link->io.NumPorts1)
+		printk(", io 0x%04x-0x%04x", link->io.BasePort1,
+		       link->io.BasePort1+link->io.NumPorts1-1);
+	if (link->io.NumPorts2)
+		printk(" & 0x%04x-0x%04x", link->io.BasePort2,
+		       link->io.BasePort2+link->io.NumPorts2-1);
+	printk("\n");
+	
+	link->state &= ~DEV_CONFIG_PENDING;
+	return;
+	
+ cs_failed:
+	cs_error(link->handle, last_fn, last_ret);
+	atmel_release(link);
+}
+
+/*======================================================================
+  
+  After a card is removed, atmel_release() will unregister the
+  device, and release the PCMCIA configuration.  If the device is
+  still open, this will be postponed until it is closed.
+  
+  ======================================================================*/
+
+static void atmel_release(dev_link_t *link)
+{
+	struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
+		
+	DEBUG(0, "atmel_release(0x%p)\n", link);
+	
+	/* Unlink the device chain */
+	link->dev = NULL;
+	
+	if (dev) 
+		stop_atmel_card(dev, 0);
+	((local_info_t*)link->priv)->eth_dev = NULL; 
+	
+	/* Don't bother checking to see if these succeed or not */
+	pcmcia_release_configuration(link->handle);
+	if (link->io.NumPorts1)
+		pcmcia_release_io(link->handle, &link->io);
+	if (link->irq.AssignedIRQ)
+		pcmcia_release_irq(link->handle, &link->irq);
+	link->state &= ~DEV_CONFIG;
+}
+
+/*======================================================================
+  
+  The card status event handler.  Mostly, this schedules other
+  stuff to run after an event is received.
+
+  When a CARD_REMOVAL event is received, we immediately set a
+  private flag to block future accesses to this device.  All the
+  functions that actually access the device should check this flag
+  to make sure the card is still present.
+  
+  ======================================================================*/
+
+static int atmel_event(event_t event, int priority,
+		      event_callback_args_t *args)
+{
+	dev_link_t *link = args->client_data;
+	local_info_t *local = link->priv;
+	
+	DEBUG(1, "atmel_event(0x%06x)\n", event);
+	
+	switch (event) {
+	case CS_EVENT_CARD_REMOVAL:
+		link->state &= ~DEV_PRESENT;
+		if (link->state & DEV_CONFIG) {
+			netif_device_detach(local->eth_dev);
+			atmel_release(link);
+		}
+		break;
+	case CS_EVENT_CARD_INSERTION:
+		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+		atmel_config(link);
+		break;
+	case CS_EVENT_PM_SUSPEND:
+		link->state |= DEV_SUSPEND;
+		/* Fall through... */
+	case CS_EVENT_RESET_PHYSICAL:
+		if (link->state & DEV_CONFIG) {
+			netif_device_detach(local->eth_dev);
+			pcmcia_release_configuration(link->handle);
+		}
+		break;
+	case CS_EVENT_PM_RESUME:
+		link->state &= ~DEV_SUSPEND;
+		/* Fall through... */
+	case CS_EVENT_CARD_RESET:
+		if (link->state & DEV_CONFIG) {
+			pcmcia_request_configuration(link->handle, &link->conf);
+			atmel_open(local->eth_dev);
+			netif_device_attach(local->eth_dev);
+		}
+		break;
+	}
+	return 0;
+} /* atmel_event */
+
+/*====================================================================*/
+static struct pcmcia_driver atmel_driver = {
+        .owner          = THIS_MODULE,
+        .drv            = {
+                .name   = "atmel_cs",
+        },
+        .attach         = atmel_attach,
+        .detach         = atmel_detach,
+};
+
+static int atmel_cs_init(void)
+{
+        return pcmcia_register_driver(&atmel_driver);
+}
+
+static void atmel_cs_cleanup(void)
+{
+        pcmcia_unregister_driver(&atmel_driver);
+	BUG_ON(dev_list != NULL);
+}
+
+/*
+    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.    
+*/
+
+module_init(atmel_cs_init);
+module_exit(atmel_cs_cleanup);