[deliverable/linux.git] / drivers / isdn / hisax / teles_cs.c

/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
/*======================================================================

    A teles S0 PCMCIA client driver

    Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
    Written by Christof Petig, christof.petig@wtal.de
    
    Also inspired by ELSA PCMCIA driver 
    by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
    
    Extentions to new hisax_pcmcia by Karsten Keil

    minor changes to be compatible with kernel 2.4.x
    by Jan.Schubert@GMX.li

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

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/system.h>

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

MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
MODULE_LICENSE("GPL");


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

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

static int protocol = 2;        /* EURO-ISDN Default */
module_param(protocol, 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 teles_cs event
   handler.
*/

static int teles_cs_config(struct pcmcia_device *link) __devinit ;
static void teles_cs_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 teles_detach(struct pcmcia_device *p_dev) __devexit ;

typedef struct local_info_t {
	struct pcmcia_device	*p_dev;
    int                 busy;
    int			cardnr;
} local_info_t;

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

    teles_attach() creates an "instance" of the driver, allocatingx
    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 teles_probe(struct pcmcia_device *link)
{
    local_info_t *local;

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

    /* Allocate space for private device-specific data */
    local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
    if (!local) return -ENOMEM;
    local->cardnr = -1;

    local->p_dev = link;
    link->priv = local;

    /*
      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->resource[0]->end = 96;
    link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;

    link->conf.Attributes = CONF_ENABLE_IRQ;
    link->conf.IntType = INT_MEMORY_AND_IO;

    return teles_cs_config(link);
} /* teles_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 teles_detach(struct pcmcia_device *link)
{
	local_info_t *info = link->priv;

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

	info->busy = 1;
	teles_cs_release(link);

	kfree(info);
} /* teles_detach */

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

    teles_cs_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.

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

static int teles_cs_configcheck(struct pcmcia_device *p_dev,
				cistpl_cftable_entry_t *cf,
				cistpl_cftable_entry_t *dflt,
				unsigned int vcc,
				void *priv_data)
{
	int j;

	p_dev->io_lines = 5;

	if ((cf->io.nwin > 0) && cf->io.win[0].base) {
		printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
		p_dev->resource[0]->start = cf->io.win[0].base;
		if (!pcmcia_request_io(p_dev))
			return 0;
	} else {
		printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
		for (j = 0x2f0; j > 0x100; j -= 0x10) {
			p_dev->resource[0]->start = j;
			if (!pcmcia_request_io(p_dev))
				return 0;
		}
	}
	return -ENODEV;
}

static int __devinit teles_cs_config(struct pcmcia_device *link)
{
    local_info_t *dev;
    int i;
    IsdnCard_t icard;

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

    i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
    if (i != 0)
	goto cs_failed;

    if (!link->irq)
        goto cs_failed;

    i = pcmcia_request_configuration(link, &link->conf);
    if (i != 0)
      goto cs_failed;

    /* Finally, report what we've done */
    dev_info(&link->dev, "index 0x%02x:",
	    link->conf.ConfigIndex);
    if (link->conf.Attributes & CONF_ENABLE_IRQ)
	    printk(", irq %d", link->irq);
    if (link->resource[0])
	printk(" & %pR", link->resource[0]);
    if (link->resource[1])
	printk(" & %pR", link->resource[1]);
    printk("\n");

    icard.para[0] = link->irq;
    icard.para[1] = link->resource[0]->start;
    icard.protocol = protocol;
    icard.typ = ISDN_CTYPE_TELESPCMCIA;
    
    i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
    if (i < 0) {
    	printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
			i, (unsigned int) link->resource[0]->start);
    	teles_cs_release(link);
	return -ENODEV;
    }

    ((local_info_t*)link->priv)->cardnr = i;
    return 0;

cs_failed:
    teles_cs_release(link);
    return -ENODEV;
} /* teles_cs_config */

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

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

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

    if (local) {
    	if (local->cardnr >= 0) {
    	    /* no unregister function with hisax */
	    HiSax_closecard(local->cardnr);
	}
    }

    pcmcia_disable_device(link);
} /* teles_cs_release */

static int teles_suspend(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

        dev->busy = 1;

	return 0;
}

static int teles_resume(struct pcmcia_device *link)
{
	local_info_t *dev = link->priv;

        dev->busy = 0;

	return 0;
}


static struct pcmcia_device_id teles_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
	PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, teles_ids);

static struct pcmcia_driver teles_cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "teles_cs",
	},
	.probe		= teles_probe,
	.remove		= __devexit_p(teles_detach),
	.id_table       = teles_ids,
	.suspend	= teles_suspend,
	.resume		= teles_resume,
};

static int __init init_teles_cs(void)
{
	return pcmcia_register_driver(&teles_cs_driver);
}

static void __exit exit_teles_cs(void)
{
	pcmcia_unregister_driver(&teles_cs_driver);
}

module_init(init_teles_cs);
module_exit(exit_teles_cs);
Commit	Line	Data
1da177e4 LT	1	/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
	2	/*======================================================================
	3
	4	A teles S0 PCMCIA client driver
	5
	6	Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
	7	Written by Christof Petig, christof.petig@wtal.de
	8
	9	Also inspired by ELSA PCMCIA driver
	10	by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
	11
	12	Extentions to new hisax_pcmcia by Karsten Keil
	13
	14	minor changes to be compatible with kernel 2.4.x
	15	by Jan.Schubert@GMX.li
	16
	17	======================================================================*/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/module.h>
	21	#include <linux/init.h>
1da177e4 LT	22	#include <linux/ptrace.h>
	23	#include <linux/slab.h>
	24	#include <linux/string.h>
	25	#include <linux/timer.h>
	26	#include <linux/ioport.h>
	27	#include <asm/io.h>
	28	#include <asm/system.h>
	29
1da177e4 LT	30	#include <pcmcia/cs.h>
	31	#include <pcmcia/cistpl.h>
	32	#include <pcmcia/cisreg.h>
	33	#include <pcmcia/ds.h>
	34	#include "hisax_cfg.h"
	35
	36	MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
	37	MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
	38	MODULE_LICENSE("GPL");
	39
1da177e4 LT	40
	41	/====================================================================/
	42
	43	/* Parameters that can be set with 'insmod' */
	44
	45	static int protocol = 2; /* EURO-ISDN Default */
	46	module_param(protocol, int, 0);
	47
	48	/====================================================================/
	49
	50	/*
	51	The event() function is this driver's Card Services event handler.
	52	It will be called by Card Services when an appropriate card status
	53	event is received. The config() and release() entry points are
	54	used to configure or release a socket, in response to card insertion
	55	and ejection events. They are invoked from the teles_cs event
	56	handler.
	57	*/
	58
158e33d1	59	static int teles_cs_config(struct pcmcia_device *link) __devinit ;
fba395ee	60	static void teles_cs_release(struct pcmcia_device *link);
1da177e4 LT	61
	62	/*
	63	The attach() and detach() entry points are used to create and destroy
	64	"instances" of the driver, where each instance represents everything
	65	needed to manage one actual PCMCIA card.
	66	*/
	67
158e33d1	68	static void teles_detach(struct pcmcia_device *p_dev) __devexit ;
1da177e4	69
1da177e4	70	typedef struct local_info_t {
fd238232	71	struct pcmcia_device *p_dev;
1da177e4 LT	72	int busy;
	73	int cardnr;
	74	} local_info_t;
	75
	76	/*======================================================================
	77
	78	teles_attach() creates an "instance" of the driver, allocatingx
	79	local data structures for one device. The device is registered
	80	with Card Services.
	81
	82	The dev_link structure is initialized, but we don't actually
	83	configure the card at this point -- we wait until we receive a
	84	card insertion event.
	85
	86	======================================================================*/
	87
158e33d1	88	static int __devinit teles_probe(struct pcmcia_device *link)
1da177e4	89	{
1da177e4	90	local_info_t *local;
1da177e4	91
e773cfe1	92	dev_dbg(&link->dev, "teles_attach()\n");
1da177e4 LT	93
1da177e4 LT	94	/* Allocate space for private device-specific data */
41f96935	95	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
f8cfa618	96	if (!local) return -ENOMEM;
1da177e4	97	local->cardnr = -1;
fd238232	98
fba395ee	99	local->p_dev = link;
fd238232	100	link->priv = local;
1da177e4	101
1da177e4 LT	102	/*
	103	General socket configuration defaults can go here. In this
	104	client, we assume very little, and rely on the CIS for almost
	105	everything. In most clients, many details (i.e., number, sizes,
	106	and attributes of IO windows) are fixed by the nature of the
	107	device, and can be hard-wired here.
	108	*/
90abdc3b DB	109	link->resource[0]->end = 96;
90abdc3b DB	110	link->resource[0]->flags \|= IO_DATA_PATH_WIDTH_AUTO;
1da177e4 LT	111
1da177e4 LT	112	link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4 LT	113	link->conf.IntType = INT_MEMORY_AND_IO;
1da177e4 LT	114
15b99ac1	115	return teles_cs_config(link);
1da177e4 LT	116	} /* teles_attach */
	117
	118	/*======================================================================
	119
	120	This deletes a driver "instance". The device is de-registered
	121	with Card Services. If it has been released, all local data
	122	structures are freed. Otherwise, the structures will be freed
	123	when the device is released.
	124
	125	======================================================================*/
	126
158e33d1	127	static void __devexit teles_detach(struct pcmcia_device *link)
1da177e4	128	{
e2d40963	129	local_info_t *info = link->priv;
1da177e4	130
e773cfe1	131	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
1da177e4	132
e2d40963 DB	133	info->busy = 1;
e2d40963 DB	134	teles_cs_release(link);
1da177e4	135
e2d40963	136	kfree(info);
1da177e4 LT	137	} /* teles_detach */
	138
	139	/*======================================================================
	140
	141	teles_cs_config() is scheduled to run after a CARD_INSERTION event
	142	is received, to configure the PCMCIA socket, and to make the
	143	device available to the system.
	144
	145	======================================================================*/
1da177e4	146
5fcd4da0 DB	147	static int teles_cs_configcheck(struct pcmcia_device *p_dev,
5fcd4da0 DB	148	cistpl_cftable_entry_t *cf,
8e2fc39d	149	cistpl_cftable_entry_t *dflt,
ad913c11	150	unsigned int vcc,
5fcd4da0	151	void *priv_data)
1da177e4	152	{
5fcd4da0 DB	153	int j;
5fcd4da0 DB	154
90abdc3b DB	155	p_dev->io_lines = 5;
90abdc3b DB	156
5fcd4da0 DB	157	if ((cf->io.nwin > 0) && cf->io.win[0].base) {
5fcd4da0 DB	158	printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
90abdc3b DB	159	p_dev->resource[0]->start = cf->io.win[0].base;
90abdc3b DB	160	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	161	return 0;
	162	} else {
	163	printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
5fcd4da0	164	for (j = 0x2f0; j > 0x100; j -= 0x10) {
90abdc3b DB	165	p_dev->resource[0]->start = j;
90abdc3b DB	166	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	167	return 0;
	168	}
	169	}
	170	return -ENODEV;
1da177e4 LT	171	}
1da177e4 LT	172
158e33d1	173	static int __devinit teles_cs_config(struct pcmcia_device *link)
1da177e4	174	{
1da177e4	175	local_info_t *dev;
e773cfe1	176	int i;
1da177e4 LT	177	IsdnCard_t icard;
1da177e4 LT	178
e773cfe1	179	dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
1da177e4 LT	180	dev = link->priv;
1da177e4 LT	181
5fcd4da0	182	i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
e773cfe1	183	if (i != 0)
1da177e4	184	goto cs_failed;
1da177e4	185
eb14120f	186	if (!link->irq)
1da177e4	187	goto cs_failed;
1da177e4	188
fba395ee	189	i = pcmcia_request_configuration(link, &link->conf);
e773cfe1	190	if (i != 0)
1da177e4	191	goto cs_failed;
1da177e4	192
1da177e4	193	/* Finally, report what we've done */
ded6a1a3 DB	194	dev_info(&link->dev, "index 0x%02x:",
ded6a1a3 DB	195	link->conf.ConfigIndex);
1da177e4	196	if (link->conf.Attributes & CONF_ENABLE_IRQ)
eb14120f	197	printk(", irq %d", link->irq);
9a017a91 DB	198	if (link->resource[0])
	199	printk(" & %pR", link->resource[0]);
	200	if (link->resource[1])
	201	printk(" & %pR", link->resource[1]);
1da177e4 LT	202	printk("\n");
1da177e4 LT	203
eb14120f	204	icard.para[0] = link->irq;
9a017a91	205	icard.para[1] = link->resource[0]->start;
1da177e4 LT	206	icard.protocol = protocol;
	207	icard.typ = ISDN_CTYPE_TELESPCMCIA;
	208
	209	i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
	210	if (i < 0) {
	211	printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
9a017a91	212	i, (unsigned int) link->resource[0]->start);
1da177e4	213	teles_cs_release(link);
15b99ac1 DB	214	return -ENODEV;
	215	}
	216
	217	((local_info_t*)link->priv)->cardnr = i;
	218	return 0;
1da177e4	219
1da177e4	220	cs_failed:
1da177e4	221	teles_cs_release(link);
15b99ac1	222	return -ENODEV;
1da177e4 LT	223	} /* teles_cs_config */
	224
	225	/*======================================================================
	226
	227	After a card is removed, teles_cs_release() will unregister the net
	228	device, and release the PCMCIA configuration. If the device is
	229	still open, this will be postponed until it is closed.
	230
	231	======================================================================*/
	232
fba395ee	233	static void teles_cs_release(struct pcmcia_device *link)
1da177e4 LT	234	{
	235	local_info_t *local = link->priv;
	236
e773cfe1	237	dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
1da177e4 LT	238
	239	if (local) {
	240	if (local->cardnr >= 0) {
	241	/* no unregister function with hisax */
	242	HiSax_closecard(local->cardnr);
	243	}
	244	}
5f2a71fc	245
fba395ee	246	pcmcia_disable_device(link);
1da177e4 LT	247	} /* teles_cs_release */
1da177e4 LT	248
fba395ee	249	static int teles_suspend(struct pcmcia_device *link)
98e4c28b	250	{
98e4c28b DB	251	local_info_t *dev = link->priv;
98e4c28b DB	252
98e4c28b	253	dev->busy = 1;
98e4c28b DB	254
	255	return 0;
	256	}
	257
fba395ee	258	static int teles_resume(struct pcmcia_device *link)
98e4c28b	259	{
98e4c28b DB	260	local_info_t *dev = link->priv;
98e4c28b DB	261
98e4c28b DB	262	dev->busy = 0;
	263
	264	return 0;
	265	}
	266
1da177e4	267
0a10d73d DB	268	static struct pcmcia_device_id teles_ids[] = {
	269	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
	270	PCMCIA_DEVICE_NULL,
	271	};
	272	MODULE_DEVICE_TABLE(pcmcia, teles_ids);
	273
1da177e4 LT	274	static struct pcmcia_driver teles_cs_driver = {
	275	.owner = THIS_MODULE,
	276	.drv = {
	277	.name = "teles_cs",
	278	},
15b99ac1	279	.probe = teles_probe,
158e33d1	280	.remove = __devexit_p(teles_detach),
0a10d73d	281	.id_table = teles_ids,
98e4c28b DB	282	.suspend = teles_suspend,
98e4c28b DB	283	.resume = teles_resume,
1da177e4 LT	284	};
	285
	286	static int __init init_teles_cs(void)
	287	{
	288	return pcmcia_register_driver(&teles_cs_driver);
	289	}
	290
	291	static void __exit exit_teles_cs(void)
	292	{
	293	pcmcia_unregister_driver(&teles_cs_driver);
1da177e4 LT	294	}
	295
	296	module_init(init_teles_cs);
	297	module_exit(exit_teles_cs);