[deliverable/linux.git] / drivers / isdn / hardware / avm / avm_cs.c

/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
 *
 * A PCMCIA client driver for AVM B1/M1/M2
 *
 * Copyright 1999 by Carsten Paeth <calle@calle.de>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/major.h>
#include <asm/io.h>
#include <asm/system.h>

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

#include <linux/skbuff.h>
#include <linux/capi.h>
#include <linux/b1lli.h>
#include <linux/b1pcmcia.h>

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

MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");

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

/*
   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 skeleton event
   handler.
*/

static void avmcs_config(dev_link_t *link);
static void avmcs_release(dev_link_t *link);
static int avmcs_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 *avmcs_attach(void);
static void avmcs_detach(dev_link_t *);

/*
   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 = "avm_cs";

/*
   A linked list of "instances" of the skeleton 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 can't be allocated dynamically.
*/
   
typedef struct local_info_t {
    dev_node_t	node;
} local_info_t;

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

    avmcs_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 *avmcs_attach(void)
{
    client_reg_t client_reg;
    dev_link_t *link;
    local_info_t *local;
    int ret;
    
    /* Initialize the dev_link_t structure */
    link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
    if (!link)
        goto err;
    memset(link, 0, sizeof(struct dev_link_t));

    /* The io structure describes IO port mapping */
    link->io.NumPorts1 = 16;
    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
    link->io.NumPorts2 = 0;

    /* Interrupt setup */
    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
    link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;

    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
    
    /* General socket configuration */
    link->conf.Attributes = CONF_ENABLE_IRQ;
    link->conf.Vcc = 50;
    link->conf.IntType = INT_MEMORY_AND_IO;
    link->conf.ConfigIndex = 1;
    link->conf.Present = PRESENT_OPTION;

    /* Allocate space for private device-specific data */
    local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
    if (!local)
        goto err_kfree;
    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.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);
	avmcs_detach(link);
	goto err;
    }
    return link;

 err_kfree:
    kfree(link);
 err:
    return NULL;
} /* avmcs_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 avmcs_detach(dev_link_t *link)
{
    dev_link_t **linkp;

    /* Locate device structure */
    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
	if (*linkp == link) break;
    if (*linkp == NULL)
	return;

    /*
       If the device is currently configured and active, we won't
       actually delete it yet.  Instead, it is marked so that when
       the release() function is called, that will trigger a proper
       detach().
    */
    if (link->state & DEV_CONFIG) {
	link->state |= DEV_STALE_LINK;
	return;
    }

    /* Break the link with Card Services */
    if (link->handle)
	pcmcia_deregister_client(link->handle);
    
    /* Unlink device structure, free pieces */
    *linkp = link->next;
    kfree(link->priv);
    kfree(link);
} /* avmcs_detach */

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

    avmcs_config() is scheduled to run after a CARD_INSERTION event
    is received, to configure the PCMCIA socket, and to make the
    ethernet device available to the system.
    
======================================================================*/

static int get_tuple(client_handle_t handle, tuple_t *tuple,
		     cisparse_t *parse)
{
    int i = pcmcia_get_tuple_data(handle, tuple);
    if (i != CS_SUCCESS) return i;
    return pcmcia_parse_tuple(handle, tuple, parse);
}

static int first_tuple(client_handle_t handle, tuple_t *tuple,
		     cisparse_t *parse)
{
    int i = pcmcia_get_first_tuple(handle, tuple);
    if (i != CS_SUCCESS) return i;
    return get_tuple(handle, tuple, parse);
}

static int next_tuple(client_handle_t handle, tuple_t *tuple,
		     cisparse_t *parse)
{
    int i = pcmcia_get_next_tuple(handle, tuple);
    if (i != CS_SUCCESS) return i;
    return get_tuple(handle, tuple, parse);
}

static void avmcs_config(dev_link_t *link)
{
    client_handle_t handle;
    tuple_t tuple;
    cisparse_t parse;
    cistpl_cftable_entry_t *cf = &parse.cftable_entry;
    local_info_t *dev;
    int i;
    u_char buf[64];
    char devname[128];
    int cardtype;
    int (*addcard)(unsigned int port, unsigned irq);
    
    handle = link->handle;
    dev = link->priv;

    /*
       This reads the card's CONFIG tuple to find its configuration
       registers.
    */
    do {
	tuple.DesiredTuple = CISTPL_CONFIG;
	i = pcmcia_get_first_tuple(handle, &tuple);
	if (i != CS_SUCCESS) break;
	tuple.TupleData = buf;
	tuple.TupleDataMax = 64;
	tuple.TupleOffset = 0;
	i = pcmcia_get_tuple_data(handle, &tuple);
	if (i != CS_SUCCESS) break;
	i = pcmcia_parse_tuple(handle, &tuple, &parse);
	if (i != CS_SUCCESS) break;
	link->conf.ConfigBase = parse.config.base;
    } while (0);
    if (i != CS_SUCCESS) {
	cs_error(link->handle, ParseTuple, i);
	link->state &= ~DEV_CONFIG_PENDING;
	return;
    }
    
    /* Configure card */
    link->state |= DEV_CONFIG;

    do {

	tuple.Attributes = 0;
	tuple.TupleData = buf;
	tuple.TupleDataMax = 254;
	tuple.TupleOffset = 0;
	tuple.DesiredTuple = CISTPL_VERS_1;

	devname[0] = 0;
	if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
	    strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1], 
			sizeof(devname));
	}
	/*
         * find IO port
         */
	tuple.TupleData = (cisdata_t *)buf;
	tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
	tuple.Attributes = 0;
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	i = first_tuple(handle, &tuple, &parse);
	while (i == CS_SUCCESS) {
	    if (cf->io.nwin > 0) {
		link->conf.ConfigIndex = cf->index;
		link->io.BasePort1 = cf->io.win[0].base;
		link->io.NumPorts1 = cf->io.win[0].len;
		link->io.NumPorts2 = 0;
                printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
			link->io.BasePort1,
		        link->io.BasePort1+link->io.NumPorts1-1);
		i = pcmcia_request_io(link->handle, &link->io);
		if (i == CS_SUCCESS) goto found_port;
	    }
	    i = next_tuple(handle, &tuple, &parse);
	}

found_port:
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestIO, i);
	    break;
	}
	
	/*
	 * allocate an interrupt line
	 */
	i = pcmcia_request_irq(link->handle, &link->irq);
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestIRQ, i);
	    pcmcia_release_io(link->handle, &link->io);
	    break;
	}
	
	/*
         * configure the PCMCIA socket
	  */
	i = pcmcia_request_configuration(link->handle, &link->conf);
	if (i != CS_SUCCESS) {
	    cs_error(link->handle, RequestConfiguration, i);
	    pcmcia_release_io(link->handle, &link->io);
	    pcmcia_release_irq(link->handle, &link->irq);
	    break;
	}

    } while (0);

    /* At this point, the dev_node_t structure(s) should be
       initialized and arranged in a linked list at link->dev. */

    if (devname[0]) {
	char *s = strrchr(devname, ' ');
	if (!s)
	   s = devname;
	else s++;
	strcpy(dev->node.dev_name, s);
        if (strcmp("M1", s) == 0) {
           cardtype = AVM_CARDTYPE_M1;
        } else if (strcmp("M2", s) == 0) {
           cardtype = AVM_CARDTYPE_M2;
	} else {
           cardtype = AVM_CARDTYPE_B1;
	}
    } else {
        strcpy(dev->node.dev_name, "b1");
        cardtype = AVM_CARDTYPE_B1;
    }

    dev->node.major = 64;
    dev->node.minor = 0;
    link->dev = &dev->node;
    
    link->state &= ~DEV_CONFIG_PENDING;
    /* If any step failed, release any partially configured state */
    if (i != 0) {
	avmcs_release(link);
	return;
    }


    switch (cardtype) {
        case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
        case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
	default:
        case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
    }
    if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
        printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
		dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
	avmcs_release(link);
	return;
    }
    dev->node.minor = i;

} /* avmcs_config */

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

    After a card is removed, avmcs_release() will unregister the net
    device, and release the PCMCIA configuration.  If the device is
    still open, this will be postponed until it is closed.
    
======================================================================*/

static void avmcs_release(dev_link_t *link)
{
    b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);

    /* Unlink the device chain */
    link->dev = NULL;
    
    /* Don't bother checking to see if these succeed or not */
    pcmcia_release_configuration(link->handle);
    pcmcia_release_io(link->handle, &link->io);
    pcmcia_release_irq(link->handle, &link->irq);
    link->state &= ~DEV_CONFIG;
    
    if (link->state & DEV_STALE_LINK)
	avmcs_detach(link);
    
} /* avmcs_release */

static int avmcs_suspend(struct pcmcia_device *dev)
{
	dev_link_t *link = dev_to_instance(dev);

	link->state |= DEV_SUSPEND;
	if (link->state & DEV_CONFIG)
		pcmcia_release_configuration(link->handle);

	return 0;
}

static int avmcs_resume(struct pcmcia_device *dev)
{
	dev_link_t *link = dev_to_instance(dev);

	link->state &= ~DEV_SUSPEND;
	if (link->state & DEV_CONFIG)
		pcmcia_request_configuration(link->handle, &link->conf);

	return 0;
}

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

    The card status event handler.  Mostly, this schedules other
    stuff to run after an event is received.  A CARD_REMOVAL event
    also sets some flags to discourage the net drivers from trying
    to talk to the card any more.

    When a CARD_REMOVAL event is received, we immediately set a 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 avmcs_event(event_t event, int priority,
			  event_callback_args_t *args)
{
    dev_link_t *link = args->client_data;

    switch (event) {
    case CS_EVENT_CARD_REMOVAL:
	link->state &= ~DEV_PRESENT;
	if (link->state & DEV_CONFIG)
		avmcs_release(link);
	break;
    case CS_EVENT_CARD_INSERTION:
	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
	avmcs_config(link);
	break;
    }
    return 0;
} /* avmcs_event */

static struct pcmcia_device_id avmcs_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
	PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
	PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);

static struct pcmcia_driver avmcs_driver = {
	.owner	= THIS_MODULE,
	.drv	= {
		.name	= "avm_cs",
	},
	.attach	= avmcs_attach,
	.event	= avmcs_event,
	.detach	= avmcs_detach,
	.id_table = avmcs_ids,
	.suspend= avmcs_suspend,
	.resume = avmcs_resume,
};

static int __init avmcs_init(void)
{
	return pcmcia_register_driver(&avmcs_driver);
}

static void __exit avmcs_exit(void)
{
	pcmcia_unregister_driver(&avmcs_driver);
	BUG_ON(dev_list != NULL);
}

module_init(avmcs_init);
module_exit(avmcs_exit);
Commit	Line	Data
1da177e4 LT	1	/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
	2	*
	3	* A PCMCIA client driver for AVM B1/M1/M2
	4	*
	5	* Copyright 1999 by Carsten Paeth <calle@calle.de>
	6	*
	7	* This software may be used and distributed according to the terms
	8	* of the GNU General Public License, incorporated herein by reference.
	9	*
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/kernel.h>
	14	#include <linux/init.h>
	15	#include <linux/sched.h>
	16	#include <linux/ptrace.h>
	17	#include <linux/slab.h>
	18	#include <linux/string.h>
	19	#include <linux/tty.h>
	20	#include <linux/serial.h>
	21	#include <linux/major.h>
	22	#include <asm/io.h>
	23	#include <asm/system.h>
	24
1da177e4 LT	25	#include <pcmcia/cs_types.h>
	26	#include <pcmcia/cs.h>
	27	#include <pcmcia/cistpl.h>
	28	#include <pcmcia/ciscode.h>
	29	#include <pcmcia/ds.h>
	30	#include <pcmcia/cisreg.h>
	31
	32	#include <linux/skbuff.h>
	33	#include <linux/capi.h>
	34	#include <linux/b1lli.h>
	35	#include <linux/b1pcmcia.h>
	36
	37	/====================================================================/
	38
	39	MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
	40	MODULE_AUTHOR("Carsten Paeth");
	41	MODULE_LICENSE("GPL");
	42
	43	/====================================================================/
	44
	45	/*
	46	The event() function is this driver's Card Services event handler.
	47	It will be called by Card Services when an appropriate card status
	48	event is received. The config() and release() entry points are
	49	used to configure or release a socket, in response to card insertion
	50	and ejection events. They are invoked from the skeleton event
	51	handler.
	52	*/
	53
	54	static void avmcs_config(dev_link_t *link);
	55	static void avmcs_release(dev_link_t *link);
	56	static int avmcs_event(event_t event, int priority,
	57	event_callback_args_t *args);
	58
	59	/*
	60	The attach() and detach() entry points are used to create and destroy
	61	"instances" of the driver, where each instance represents everything
	62	needed to manage one actual PCMCIA card.
	63	*/
	64
	65	static dev_link_t *avmcs_attach(void);
	66	static void avmcs_detach(dev_link_t *);
	67
	68	/*
	69	The dev_info variable is the "key" that is used to match up this
	70	device driver with appropriate cards, through the card configuration
	71	database.
	72	*/
	73
	74	static dev_info_t dev_info = "avm_cs";
	75
	76	/*
	77	A linked list of "instances" of the skeleton device. Each actual
	78	PCMCIA card corresponds to one device instance, and is described
	79	by one dev_link_t structure (defined in ds.h).
	80
	81	You may not want to use a linked list for this -- for example, the
	82	memory card driver uses an array of dev_link_t pointers, where minor
	83	device numbers are used to derive the corresponding array index.
	84	*/
	85
	86	static dev_link_t *dev_list = NULL;
	87
	88	/*
89	A dev_link_t structure has fields for most things that are needed
90	to keep track of a socket, but there will usually be some device
91	specific information that also needs to be kept track of. The
92	'priv' pointer in a dev_link_t structure can be used to point to
93	a device-specific private data structure, like this.
94
95	A driver needs to provide a dev_node_t structure for each device
96	on a card. In some cases, there is only one device per card (for
97	example, ethernet cards, modems). In other cases, there may be
98	many actual or logical devices (SCSI adapters, memory cards with
99	multiple partitions). The dev_node_t structures need to be kept
100	in a linked list starting at the 'dev' field of a dev_link_t
101	structure. We allocate them in the card's private data structure,
102	because they generally can't be allocated dynamically.
103	*/
104
105	typedef struct local_info_t {
106	dev_node_t node;
107	} local_info_t;
108
109	/*======================================================================
110
111	avmcs_attach() creates an "instance" of the driver, allocating
112	local data structures for one device. The device is registered
113	with Card Services.
114
115	The dev_link structure is initialized, but we don't actually
116	configure the card at this point -- we wait until we receive a
117	card insertion event.
118
119	======================================================================*/
120
121	static dev_link_t *avmcs_attach(void)
122	{
123	client_reg_t client_reg;
124	dev_link_t *link;
125	local_info_t *local;
126	int ret;
127
128	/* Initialize the dev_link_t structure */
129	link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
130	if (!link)
131	goto err;
132	memset(link, 0, sizeof(struct dev_link_t));
133
134	/* The io structure describes IO port mapping */
135	link->io.NumPorts1 = 16;
136	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
137	link->io.NumPorts2 = 0;
138
139	/* Interrupt setup */
140	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
141	link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING\|IRQ_FIRST_SHARED;
142
143	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
144
145	/* General socket configuration */
146	link->conf.Attributes = CONF_ENABLE_IRQ;
147	link->conf.Vcc = 50;
148	link->conf.IntType = INT_MEMORY_AND_IO;
149	link->conf.ConfigIndex = 1;
150	link->conf.Present = PRESENT_OPTION;
151
152	/* Allocate space for private device-specific data */
153	local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
154	if (!local)
155	goto err_kfree;
156	memset(local, 0, sizeof(local_info_t));
157	link->priv = local;
158
159	/* Register with Card Services */
160	link->next = dev_list;
161	dev_list = link;
162	client_reg.dev_info = &dev_info;
1da177e4 LT	163	client_reg.Version = 0x0210;
	164	client_reg.event_callback_args.client_data = link;
	165	ret = pcmcia_register_client(&link->handle, &client_reg);
	166	if (ret != 0) {
	167	cs_error(link->handle, RegisterClient, ret);
	168	avmcs_detach(link);
	169	goto err;
	170	}
	171	return link;
	172
	173	err_kfree:
	174	kfree(link);
	175	err:
	176	return NULL;
	177	} /* avmcs_attach */
	178
	179	/*======================================================================
	180
	181	This deletes a driver "instance". The device is de-registered
	182	with Card Services. If it has been released, all local data
	183	structures are freed. Otherwise, the structures will be freed
	184	when the device is released.
	185
	186	======================================================================*/
	187
	188	static void avmcs_detach(dev_link_t *link)
	189	{
	190	dev_link_t **linkp;
	191
	192	/* Locate device structure */
	193	for (linkp = &dev_list; linkp; linkp = &(linkp)->next)
	194	if (*linkp == link) break;
	195	if (*linkp == NULL)
	196	return;
	197
	198	/*
	199	If the device is currently configured and active, we won't
	200	actually delete it yet. Instead, it is marked so that when
	201	the release() function is called, that will trigger a proper
	202	detach().
	203	*/
	204	if (link->state & DEV_CONFIG) {
	205	link->state \|= DEV_STALE_LINK;
	206	return;
	207	}
	208
	209	/* Break the link with Card Services */
	210	if (link->handle)
	211	pcmcia_deregister_client(link->handle);
	212
	213	/* Unlink device structure, free pieces */
	214	*linkp = link->next;
3c7208f2	215	kfree(link->priv);
1da177e4	216	kfree(link);
1da177e4 LT	217	} /* avmcs_detach */
	218
	219	/*======================================================================
	220
	221	avmcs_config() is scheduled to run after a CARD_INSERTION event
	222	is received, to configure the PCMCIA socket, and to make the
	223	ethernet device available to the system.
	224
	225	======================================================================*/
	226
	227	static int get_tuple(client_handle_t handle, tuple_t *tuple,
	228	cisparse_t *parse)
	229	{
	230	int i = pcmcia_get_tuple_data(handle, tuple);
	231	if (i != CS_SUCCESS) return i;
	232	return pcmcia_parse_tuple(handle, tuple, parse);
	233	}
	234
	235	static int first_tuple(client_handle_t handle, tuple_t *tuple,
	236	cisparse_t *parse)
	237	{
	238	int i = pcmcia_get_first_tuple(handle, tuple);
	239	if (i != CS_SUCCESS) return i;
	240	return get_tuple(handle, tuple, parse);
	241	}
	242
	243	static int next_tuple(client_handle_t handle, tuple_t *tuple,
	244	cisparse_t *parse)
	245	{
	246	int i = pcmcia_get_next_tuple(handle, tuple);
	247	if (i != CS_SUCCESS) return i;
	248	return get_tuple(handle, tuple, parse);
	249	}
	250
	251	static void avmcs_config(dev_link_t *link)
	252	{
	253	client_handle_t handle;
	254	tuple_t tuple;
	255	cisparse_t parse;
	256	cistpl_cftable_entry_t *cf = &parse.cftable_entry;
	257	local_info_t *dev;
	258	int i;
	259	u_char buf[64];
	260	char devname[128];
	261	int cardtype;
	262	int (*addcard)(unsigned int port, unsigned irq);
	263
	264	handle = link->handle;
	265	dev = link->priv;
	266
	267	/*
	268	This reads the card's CONFIG tuple to find its configuration
	269	registers.
	270	*/
	271	do {
	272	tuple.DesiredTuple = CISTPL_CONFIG;
	273	i = pcmcia_get_first_tuple(handle, &tuple);
	274	if (i != CS_SUCCESS) break;
	275	tuple.TupleData = buf;
	276	tuple.TupleDataMax = 64;
	277	tuple.TupleOffset = 0;
	278	i = pcmcia_get_tuple_data(handle, &tuple);
	279	if (i != CS_SUCCESS) break;
	280	i = pcmcia_parse_tuple(handle, &tuple, &parse);
281	if (i != CS_SUCCESS) break;
282	link->conf.ConfigBase = parse.config.base;
283	} while (0);
284	if (i != CS_SUCCESS) {
285	cs_error(link->handle, ParseTuple, i);
286	link->state &= ~DEV_CONFIG_PENDING;
287	return;
288	}
289
290	/* Configure card */
291	link->state \|= DEV_CONFIG;
292
293	do {
294
295	tuple.Attributes = 0;
296	tuple.TupleData = buf;
297	tuple.TupleDataMax = 254;
298	tuple.TupleOffset = 0;
299	tuple.DesiredTuple = CISTPL_VERS_1;
300
301	devname[0] = 0;
302	if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
303	strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
304	sizeof(devname));
305	}
306	/*
307	* find IO port
308	*/
309	tuple.TupleData = (cisdata_t *)buf;
310	tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
311	tuple.Attributes = 0;
312	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
313	i = first_tuple(handle, &tuple, &parse);
314	while (i == CS_SUCCESS) {
315	if (cf->io.nwin > 0) {
316	link->conf.ConfigIndex = cf->index;
317	link->io.BasePort1 = cf->io.win[0].base;
318	link->io.NumPorts1 = cf->io.win[0].len;
319	link->io.NumPorts2 = 0;
320	printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
321	link->io.BasePort1,
322	link->io.BasePort1+link->io.NumPorts1-1);
323	i = pcmcia_request_io(link->handle, &link->io);
324	if (i == CS_SUCCESS) goto found_port;
325	}
326	i = next_tuple(handle, &tuple, &parse);
327	}
328
329	found_port:
330	if (i != CS_SUCCESS) {
331	cs_error(link->handle, RequestIO, i);
332	break;
333	}
334
335	/*
336	* allocate an interrupt line
337	*/
338	i = pcmcia_request_irq(link->handle, &link->irq);
339	if (i != CS_SUCCESS) {
340	cs_error(link->handle, RequestIRQ, i);
341	pcmcia_release_io(link->handle, &link->io);
342	break;
343	}
344
345	/*
346	* configure the PCMCIA socket
347	*/
348	i = pcmcia_request_configuration(link->handle, &link->conf);
349	if (i != CS_SUCCESS) {
350	cs_error(link->handle, RequestConfiguration, i);
351	pcmcia_release_io(link->handle, &link->io);
352	pcmcia_release_irq(link->handle, &link->irq);
353	break;
354	}
355
356	} while (0);
357
358	/* At this point, the dev_node_t structure(s) should be
359	initialized and arranged in a linked list at link->dev. */
360
361	if (devname[0]) {
362	char *s = strrchr(devname, ' ');
363	if (!s)
364	s = devname;
365	else s++;
366	strcpy(dev->node.dev_name, s);
367	if (strcmp("M1", s) == 0) {
368	cardtype = AVM_CARDTYPE_M1;
369	} else if (strcmp("M2", s) == 0) {
370	cardtype = AVM_CARDTYPE_M2;
371	} else {
372	cardtype = AVM_CARDTYPE_B1;
373	}
374	} else {
375	strcpy(dev->node.dev_name, "b1");
376	cardtype = AVM_CARDTYPE_B1;
377	}
378
379	dev->node.major = 64;
380	dev->node.minor = 0;
381	link->dev = &dev->node;
382
383	link->state &= ~DEV_CONFIG_PENDING;
384	/* If any step failed, release any partially configured state */
385	if (i != 0) {
386	avmcs_release(link);
387	return;
388	}
389
390
391	switch (cardtype) {
392	case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
393	case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
394	default:
395	case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
396	}
397	if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
398	printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
399	dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
400	avmcs_release(link);
401	return;
402	}
403	dev->node.minor = i;
404
405	} /* avmcs_config */
406
407	/*======================================================================
408
409	After a card is removed, avmcs_release() will unregister the net
410	device, and release the PCMCIA configuration. If the device is
411	still open, this will be postponed until it is closed.
412
413	======================================================================*/
414
415	static void avmcs_release(dev_link_t *link)
416	{
417	b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
418
419	/* Unlink the device chain */
420	link->dev = NULL;
421
422	/* Don't bother checking to see if these succeed or not */
423	pcmcia_release_configuration(link->handle);
424	pcmcia_release_io(link->handle, &link->io);
425	pcmcia_release_irq(link->handle, &link->irq);
426	link->state &= ~DEV_CONFIG;
427
428	if (link->state & DEV_STALE_LINK)
429	avmcs_detach(link);
430
431	} /* avmcs_release */
432
98e4c28b DB	433	static int avmcs_suspend(struct pcmcia_device *dev)
	434	{
	435	dev_link_t *link = dev_to_instance(dev);
	436
	437	link->state \|= DEV_SUSPEND;
	438	if (link->state & DEV_CONFIG)
	439	pcmcia_release_configuration(link->handle);
	440
	441	return 0;
	442	}
	443
	444	static int avmcs_resume(struct pcmcia_device *dev)
	445	{
	446	dev_link_t *link = dev_to_instance(dev);
	447
	448	link->state &= ~DEV_SUSPEND;
	449	if (link->state & DEV_CONFIG)
	450	pcmcia_request_configuration(link->handle, &link->conf);
	451
	452	return 0;
	453	}
	454
1da177e4 LT	455	/*======================================================================
	456
	457	The card status event handler. Mostly, this schedules other
	458	stuff to run after an event is received. A CARD_REMOVAL event
	459	also sets some flags to discourage the net drivers from trying
	460	to talk to the card any more.
	461
	462	When a CARD_REMOVAL event is received, we immediately set a flag
	463	to block future accesses to this device. All the functions that
	464	actually access the device should check this flag to make sure
	465	the card is still present.
	466
	467	======================================================================*/
	468
	469	static int avmcs_event(event_t event, int priority,
	470	event_callback_args_t *args)
	471	{
	472	dev_link_t *link = args->client_data;
	473
	474	switch (event) {
	475	case CS_EVENT_CARD_REMOVAL:
	476	link->state &= ~DEV_PRESENT;
	477	if (link->state & DEV_CONFIG)
	478	avmcs_release(link);
	479	break;
	480	case CS_EVENT_CARD_INSERTION:
	481	link->state \|= DEV_PRESENT \| DEV_CONFIG_PENDING;
	482	avmcs_config(link);
	483	break;
1da177e4 LT	484	}
	485	return 0;
	486	} /* avmcs_event */
	487
a13bcf0d DB	488	static struct pcmcia_device_id avmcs_ids[] = {
	489	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
	490	PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
	491	PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
	492	PCMCIA_DEVICE_NULL
	493	};
	494	MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
	495
1da177e4 LT	496	static struct pcmcia_driver avmcs_driver = {
	497	.owner = THIS_MODULE,
	498	.drv = {
	499	.name = "avm_cs",
	500	},
	501	.attach = avmcs_attach,
1e212f36	502	.event = avmcs_event,
1da177e4	503	.detach = avmcs_detach,
a13bcf0d	504	.id_table = avmcs_ids,
98e4c28b DB	505	.suspend= avmcs_suspend,
98e4c28b DB	506	.resume = avmcs_resume,
1da177e4 LT	507	};
	508
	509	static int __init avmcs_init(void)
	510	{
	511	return pcmcia_register_driver(&avmcs_driver);
	512	}
	513
	514	static void __exit avmcs_exit(void)
	515	{
	516	pcmcia_unregister_driver(&avmcs_driver);
	517	BUG_ON(dev_list != NULL);
	518	}
	519
	520	module_init(avmcs_init);
	521	module_exit(avmcs_exit);