[net-next-2.6.git] / drivers / isdn / hisax / avma1_cs.c

/*
 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
 *
 * Author       Carsten Paeth
 * Copyright    1998-2001 by Carsten Paeth <calle@calle.in-berlin.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/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/system.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include "hisax_cfg.h"

MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");


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

/* Parameters that can be set with 'insmod' */

static int isdnprot = 2;

module_param(isdnprot, int, 0);

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

/*
   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 int avma1cs_config(struct pcmcia_device *link) __devinit ;
static void avma1cs_release(struct pcmcia_device *link);

/*
   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 void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ;


/*
   A linked list of "instances" of the skeleton device.  Each actual
   PCMCIA card corresponds to one device instance, and is described
   by one struct pcmcia_device 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 struct pcmcia_device pointers, where minor
   device numbers are used to derive the corresponding array index.
*/

/*
   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 struct pcmcia_device
   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;

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

    avma1cs_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 int __devinit avma1cs_probe(struct pcmcia_device *p_dev)
{
    local_info_t *local;

    dev_dbg(&p_dev->dev, "avma1cs_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;

    /* The io structure describes IO port mapping */
    p_dev->io.NumPorts1 = 16;
    p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
    p_dev->io.NumPorts2 = 16;
    p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
    p_dev->io.IOAddrLines = 5;

    /* General socket configuration */
    p_dev->conf.Attributes = CONF_ENABLE_IRQ;
    p_dev->conf.IntType = INT_MEMORY_AND_IO;
    p_dev->conf.ConfigIndex = 1;
    p_dev->conf.Present = PRESENT_OPTION;

    return avma1cs_config(p_dev);
} /* avma1cs_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 __devexit avma1cs_detach(struct pcmcia_device *link)
{
	dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
	avma1cs_release(link);
	kfree(link->priv);
} /* avma1cs_detach */

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

    avma1cs_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 avma1cs_configcheck(struct pcmcia_device *p_dev,
			       cistpl_cftable_entry_t *cf,
			       cistpl_cftable_entry_t *dflt,
			       unsigned int vcc,
			       void *priv_data)
{
	if (cf->io.nwin <= 0)
		return -ENODEV;

	p_dev->io.BasePort1 = cf->io.win[0].base;
	p_dev->io.NumPorts1 = cf->io.win[0].len;
	p_dev->io.NumPorts2 = 0;
	printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
	       p_dev->io.BasePort1,
	       p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
	return pcmcia_request_io(p_dev, &p_dev->io);
}


static int __devinit avma1cs_config(struct pcmcia_device *link)
{
    local_info_t *dev;
    int i = -1;
    char devname[128];
    IsdnCard_t	icard;
    int busy = 0;

    dev = link->priv;

    dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);

    devname[0] = 0;
    if (link->prod_id[1])
	    strlcpy(devname, link->prod_id[1], sizeof(devname));

    if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
	    return -ENODEV;

    do {
	/*
	 * allocate an interrupt line
	 */
	if (!link->irq) {
	    /* undo */
	    pcmcia_disable_device(link);
	    break;
	}

	/*
	 * configure the PCMCIA socket
	 */
	i = pcmcia_request_configuration(link, &link->conf);
	if (i != 0) {
	    pcmcia_disable_device(link);
	    break;
	}

    } while (0);

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

    strcpy(dev->node.dev_name, "A1");
    dev->node.major = 45;
    dev->node.minor = 0;
    link->dev_node = &dev->node;

    /* If any step failed, release any partially configured state */
    if (i != 0) {
	avma1cs_release(link);
	return -ENODEV;
    }

    printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
				link->io.BasePort1, link->irq);

    icard.para[0] = link->irq;
    icard.para[1] = link->io.BasePort1;
    icard.protocol = isdnprot;
    icard.typ = ISDN_CTYPE_A1_PCMCIA;
    
    i = hisax_init_pcmcia(link, &busy, &icard);
    if (i < 0) {
    	printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
	avma1cs_release(link);
	return -ENODEV;
    }
    dev->node.minor = i;

    return 0;
} /* avma1cs_config */

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

    After a card is removed, avma1cs_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 avma1cs_release(struct pcmcia_device *link)
{
	local_info_t *local = link->priv;

	dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);

	/* now unregister function with hisax */
	HiSax_closecard(local->node.minor);

	pcmcia_disable_device(link);
} /* avma1cs_release */


static struct pcmcia_device_id avma1cs_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
	PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);

static struct pcmcia_driver avma1cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "avma1_cs",
	},
	.probe		= avma1cs_probe,
	.remove		= __devexit_p(avma1cs_detach),
	.id_table	= avma1cs_ids,
};

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

static int __init init_avma1_cs(void)
{
	return(pcmcia_register_driver(&avma1cs_driver));
}

static void __exit exit_avma1_cs(void)
{
	pcmcia_unregister_driver(&avma1cs_driver);
}

module_init(init_avma1_cs);
module_exit(exit_avma1_cs);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* PCMCIA client driver for AVM A1 / Fritz!PCMCIA
	3	*
	4	* Author Carsten Paeth
	5	* Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.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
	14
	15	#include <linux/kernel.h>
	16	#include <linux/init.h>
1da177e4 LT	17	#include <linux/ptrace.h>
	18	#include <linux/slab.h>
	19	#include <linux/string.h>
	20	#include <asm/io.h>
	21	#include <asm/system.h>
	22
1da177e4 LT	23	#include <pcmcia/cs_types.h>
	24	#include <pcmcia/cs.h>
	25	#include <pcmcia/cistpl.h>
	26	#include <pcmcia/ds.h>
	27	#include "hisax_cfg.h"
	28
	29	MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
	30	MODULE_AUTHOR("Carsten Paeth");
	31	MODULE_LICENSE("GPL");
	32
1da177e4 LT	33
	34	/====================================================================/
	35
	36	/* Parameters that can be set with 'insmod' */
	37
	38	static int isdnprot = 2;
	39
	40	module_param(isdnprot, int, 0);
	41
	42	/====================================================================/
	43
	44	/*
	45	The event() function is this driver's Card Services event handler.
	46	It will be called by Card Services when an appropriate card status
	47	event is received. The config() and release() entry points are
	48	used to configure or release a socket, in response to card insertion
	49	and ejection events. They are invoked from the skeleton event
	50	handler.
	51	*/
	52
a465870a	53	static int avma1cs_config(struct pcmcia_device *link) __devinit ;
fba395ee	54	static void avma1cs_release(struct pcmcia_device *link);
1da177e4 LT	55
	56	/*
	57	The attach() and detach() entry points are used to create and destroy
	58	"instances" of the driver, where each instance represents everything
	59	needed to manage one actual PCMCIA card.
	60	*/
	61
a465870a	62	static void avma1cs_detach(struct pcmcia_device *p_dev) __devexit ;
1da177e4	63
1da177e4 LT	64
	65	/*
	66	A linked list of "instances" of the skeleton device. Each actual
	67	PCMCIA card corresponds to one device instance, and is described
fba395ee	68	by one struct pcmcia_device structure (defined in ds.h).
1da177e4 LT	69
1da177e4 LT	70	You may not want to use a linked list for this -- for example, the
fba395ee	71	memory card driver uses an array of struct pcmcia_device pointers, where minor
1da177e4 LT	72	device numbers are used to derive the corresponding array index.
	73	*/
	74
1da177e4	75	/*
1da177e4 LT	76	A driver needs to provide a dev_node_t structure for each device
	77	on a card. In some cases, there is only one device per card (for
	78	example, ethernet cards, modems). In other cases, there may be
	79	many actual or logical devices (SCSI adapters, memory cards with
	80	multiple partitions). The dev_node_t structures need to be kept
fba395ee	81	in a linked list starting at the 'dev' field of a struct pcmcia_device
1da177e4 LT	82	structure. We allocate them in the card's private data structure,
	83	because they generally can't be allocated dynamically.
	84	*/
	85
	86	typedef struct local_info_t {
	87	dev_node_t node;
	88	} local_info_t;
	89
	90	/*======================================================================
	91
	92	avma1cs_attach() creates an "instance" of the driver, allocating
	93	local data structures for one device. The device is registered
	94	with Card Services.
	95
	96	The dev_link structure is initialized, but we don't actually
	97	configure the card at this point -- we wait until we receive a
	98	card insertion event.
	99
	100	======================================================================*/
	101
a465870a	102	static int __devinit avma1cs_probe(struct pcmcia_device *p_dev)
1da177e4	103	{
1da177e4	104	local_info_t *local;
f8cfa618	105
e773cfe1	106	dev_dbg(&p_dev->dev, "avma1cs_attach()\n");
1da177e4	107
1da177e4	108	/* Allocate space for private device-specific data */
41f96935	109	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
fd238232	110	if (!local)
f8cfa618	111	return -ENOMEM;
fd238232	112
fd238232	113	p_dev->priv = local;
1da177e4 LT	114
1da177e4 LT	115	/* The io structure describes IO port mapping */
fd238232 DB	116	p_dev->io.NumPorts1 = 16;
	117	p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	118	p_dev->io.NumPorts2 = 16;
	119	p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
	120	p_dev->io.IOAddrLines = 5;
1da177e4	121
1da177e4	122	/* General socket configuration */
fd238232 DB	123	p_dev->conf.Attributes = CONF_ENABLE_IRQ;
	124	p_dev->conf.IntType = INT_MEMORY_AND_IO;
	125	p_dev->conf.ConfigIndex = 1;
	126	p_dev->conf.Present = PRESENT_OPTION;
f8cfa618	127
15b99ac1	128	return avma1cs_config(p_dev);
1da177e4 LT	129	} /* avma1cs_attach */
	130
	131	/*======================================================================
	132
	133	This deletes a driver "instance". The device is de-registered
	134	with Card Services. If it has been released, all local data
	135	structures are freed. Otherwise, the structures will be freed
	136	when the device is released.
	137
	138	======================================================================*/
	139
a465870a	140	static void __devexit avma1cs_detach(struct pcmcia_device *link)
1da177e4	141	{
e773cfe1	142	dev_dbg(&link->dev, "avma1cs_detach(0x%p)\n", link);
e2d40963 DB	143	avma1cs_release(link);
e2d40963 DB	144	kfree(link->priv);
1da177e4 LT	145	} /* avma1cs_detach */
	146
	147	/*======================================================================
	148
	149	avma1cs_config() is scheduled to run after a CARD_INSERTION event
	150	is received, to configure the PCMCIA socket, and to make the
	151	ethernet device available to the system.
	152
	153	======================================================================*/
	154
5fcd4da0	155	static int avma1cs_configcheck(struct pcmcia_device *p_dev,
8e2fc39d DB	156	cistpl_cftable_entry_t *cf,
8e2fc39d DB	157	cistpl_cftable_entry_t *dflt,
ad913c11	158	unsigned int vcc,
8e2fc39d	159	void *priv_data)
1da177e4	160	{
5fcd4da0 DB	161	if (cf->io.nwin <= 0)
	162	return -ENODEV;
	163
5fcd4da0 DB	164	p_dev->io.BasePort1 = cf->io.win[0].base;
	165	p_dev->io.NumPorts1 = cf->io.win[0].len;
	166	p_dev->io.NumPorts2 = 0;
	167	printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
	168	p_dev->io.BasePort1,
	169	p_dev->io.BasePort1+p_dev->io.NumPorts1-1);
	170	return pcmcia_request_io(p_dev, &p_dev->io);
1da177e4 LT	171	}
1da177e4 LT	172
1da177e4	173
a465870a	174	static int __devinit avma1cs_config(struct pcmcia_device *link)
1da177e4	175	{
1da177e4	176	local_info_t *dev;
eb14120f	177	int i = -1;
1da177e4 LT	178	char devname[128];
	179	IsdnCard_t icard;
	180	int busy = 0;
fba395ee	181
1da177e4 LT	182	dev = link->priv;
1da177e4 LT	183
e773cfe1	184	dev_dbg(&link->dev, "avma1cs_config(0x%p)\n", link);
1da177e4	185
5fcd4da0 DB	186	devname[0] = 0;
	187	if (link->prod_id[1])
	188	strlcpy(devname, link->prod_id[1], sizeof(devname));
a9606fd3	189
5fcd4da0 DB	190	if (pcmcia_loop_config(link, avma1cs_configcheck, NULL))
5fcd4da0 DB	191	return -ENODEV;
1da177e4	192
5fcd4da0	193	do {
1da177e4 LT	194	/*
	195	* allocate an interrupt line
	196	*/
eb14120f	197	if (!link->irq) {
50db3fdb	198	/* undo */
fba395ee	199	pcmcia_disable_device(link);
1da177e4 LT	200	break;
1da177e4 LT	201	}
50db3fdb	202
1da177e4 LT	203	/*
	204	* configure the PCMCIA socket
	205	*/
fba395ee	206	i = pcmcia_request_configuration(link, &link->conf);
4c89e88b	207	if (i != 0) {
fba395ee	208	pcmcia_disable_device(link);
1da177e4 LT	209	break;
	210	}
	211
	212	} while (0);
	213
	214	/* At this point, the dev_node_t structure(s) should be
	215	initialized and arranged in a linked list at link->dev. */
	216
	217	strcpy(dev->node.dev_name, "A1");
	218	dev->node.major = 45;
	219	dev->node.minor = 0;
fd238232	220	link->dev_node = &dev->node;
e2d40963	221
1da177e4 LT	222	/* If any step failed, release any partially configured state */
	223	if (i != 0) {
	224	avma1cs_release(link);
15b99ac1	225	return -ENODEV;
1da177e4 LT	226	}
	227
	228	printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
eb14120f	229	link->io.BasePort1, link->irq);
1da177e4	230
eb14120f	231	icard.para[0] = link->irq;
1da177e4 LT	232	icard.para[1] = link->io.BasePort1;
	233	icard.protocol = isdnprot;
	234	icard.typ = ISDN_CTYPE_A1_PCMCIA;
	235
	236	i = hisax_init_pcmcia(link, &busy, &icard);
	237	if (i < 0) {
	238	printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
	239	avma1cs_release(link);
15b99ac1	240	return -ENODEV;
1da177e4 LT	241	}
	242	dev->node.minor = i;
	243
15b99ac1	244	return 0;
1da177e4 LT	245	} /* avma1cs_config */
	246
	247	/*======================================================================
	248
	249	After a card is removed, avma1cs_release() will unregister the net
	250	device, and release the PCMCIA configuration. If the device is
	251	still open, this will be postponed until it is closed.
	252
	253	======================================================================*/
	254
fba395ee	255	static void avma1cs_release(struct pcmcia_device *link)
1da177e4	256	{
5f2a71fc	257	local_info_t *local = link->priv;
1da177e4	258
e773cfe1	259	dev_dbg(&link->dev, "avma1cs_release(0x%p)\n", link);
1da177e4	260
5f2a71fc DB	261	/* now unregister function with hisax */
5f2a71fc DB	262	HiSax_closecard(local->node.minor);
1da177e4	263
fba395ee	264	pcmcia_disable_device(link);
1da177e4 LT	265	} /* avma1cs_release */
1da177e4 LT	266
1da177e4	267
c594c12c DB	268	static struct pcmcia_device_id avma1cs_ids[] = {
	269	PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
	270	PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
	271	PCMCIA_DEVICE_NULL
	272	};
	273	MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
	274
1da177e4 LT	275	static struct pcmcia_driver avma1cs_driver = {
	276	.owner = THIS_MODULE,
	277	.drv = {
	278	.name = "avma1_cs",
	279	},
15b99ac1	280	.probe = avma1cs_probe,
a465870a	281	.remove = __devexit_p(avma1cs_detach),
c594c12c	282	.id_table = avma1cs_ids,
1da177e4	283	};
8661bb5b	284
1da177e4 LT	285	/====================================================================/
	286
	287	static int __init init_avma1_cs(void)
	288	{
	289	return(pcmcia_register_driver(&avma1cs_driver));
	290	}
	291
	292	static void __exit exit_avma1_cs(void)
	293	{
	294	pcmcia_unregister_driver(&avma1cs_driver);
1da177e4 LT	295	}
	296
	297	module_init(init_avma1_cs);
	298	module_exit(exit_avma1_cs);