[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/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->config_flags |= CONF_ENABLE_IRQ;

    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,
				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_enable_device(link);
    if (i != 0)
      goto cs_failed;

    /* Finally, report what we've done */
    dev_info(&link->dev, "index 0x%02x:",
	    link->config_index);
    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/cistpl.h>
	31	#include <pcmcia/cisreg.h>
	32	#include <pcmcia/ds.h>
	33	#include "hisax_cfg.h"
	34
	35	MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
	36	MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
	37	MODULE_LICENSE("GPL");
	38
1da177e4 LT	39
	40	/====================================================================/
	41
	42	/* Parameters that can be set with 'insmod' */
	43
	44	static int protocol = 2; /* EURO-ISDN Default */
	45	module_param(protocol, int, 0);
	46
	47	/====================================================================/
	48
	49	/*
	50	The event() function is this driver's Card Services event handler.
	51	It will be called by Card Services when an appropriate card status
	52	event is received. The config() and release() entry points are
	53	used to configure or release a socket, in response to card insertion
	54	and ejection events. They are invoked from the teles_cs event
	55	handler.
	56	*/
	57
158e33d1	58	static int teles_cs_config(struct pcmcia_device *link) __devinit ;
fba395ee	59	static void teles_cs_release(struct pcmcia_device *link);
1da177e4 LT	60
	61	/*
	62	The attach() and detach() entry points are used to create and destroy
	63	"instances" of the driver, where each instance represents everything
	64	needed to manage one actual PCMCIA card.
	65	*/
	66
158e33d1	67	static void teles_detach(struct pcmcia_device *p_dev) __devexit ;
1da177e4	68
1da177e4	69	typedef struct local_info_t {
fd238232	70	struct pcmcia_device *p_dev;
1da177e4 LT	71	int busy;
	72	int cardnr;
	73	} local_info_t;
	74
	75	/*======================================================================
	76
	77	teles_attach() creates an "instance" of the driver, allocatingx
	78	local data structures for one device. The device is registered
	79	with Card Services.
	80
	81	The dev_link structure is initialized, but we don't actually
	82	configure the card at this point -- we wait until we receive a
	83	card insertion event.
	84
	85	======================================================================*/
	86
158e33d1	87	static int __devinit teles_probe(struct pcmcia_device *link)
1da177e4	88	{
1da177e4	89	local_info_t *local;
1da177e4	90
e773cfe1	91	dev_dbg(&link->dev, "teles_attach()\n");
1da177e4 LT	92
1da177e4 LT	93	/* Allocate space for private device-specific data */
41f96935	94	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
f8cfa618	95	if (!local) return -ENOMEM;
1da177e4	96	local->cardnr = -1;
fd238232	97
fba395ee	98	local->p_dev = link;
fd238232	99	link->priv = local;
1da177e4	100
1da177e4 LT	101	/*
	102	General socket configuration defaults can go here. In this
	103	client, we assume very little, and rely on the CIS for almost
	104	everything. In most clients, many details (i.e., number, sizes,
	105	and attributes of IO windows) are fixed by the nature of the
	106	device, and can be hard-wired here.
	107	*/
90abdc3b DB	108	link->resource[0]->end = 96;
90abdc3b DB	109	link->resource[0]->flags \|= IO_DATA_PATH_WIDTH_AUTO;
1da177e4	110
1ac71e5a	111	link->config_flags \|= CONF_ENABLE_IRQ;
1da177e4	112
15b99ac1	113	return teles_cs_config(link);
1da177e4 LT	114	} /* teles_attach */
	115
	116	/*======================================================================
	117
	118	This deletes a driver "instance". The device is de-registered
	119	with Card Services. If it has been released, all local data
	120	structures are freed. Otherwise, the structures will be freed
	121	when the device is released.
	122
	123	======================================================================*/
	124
158e33d1	125	static void __devexit teles_detach(struct pcmcia_device *link)
1da177e4	126	{
e2d40963	127	local_info_t *info = link->priv;
1da177e4	128
e773cfe1	129	dev_dbg(&link->dev, "teles_detach(0x%p)\n", link);
1da177e4	130
e2d40963 DB	131	info->busy = 1;
e2d40963 DB	132	teles_cs_release(link);
1da177e4	133
e2d40963	134	kfree(info);
1da177e4 LT	135	} /* teles_detach */
	136
	137	/*======================================================================
	138
	139	teles_cs_config() is scheduled to run after a CARD_INSERTION event
	140	is received, to configure the PCMCIA socket, and to make the
	141	device available to the system.
	142
	143	======================================================================*/
1da177e4	144
5fcd4da0 DB	145	static int teles_cs_configcheck(struct pcmcia_device *p_dev,
5fcd4da0 DB	146	cistpl_cftable_entry_t *cf,
8e2fc39d	147	cistpl_cftable_entry_t *dflt,
5fcd4da0	148	void *priv_data)
1da177e4	149	{
5fcd4da0 DB	150	int j;
5fcd4da0 DB	151
90abdc3b DB	152	p_dev->io_lines = 5;
90abdc3b DB	153
5fcd4da0 DB	154	if ((cf->io.nwin > 0) && cf->io.win[0].base) {
5fcd4da0 DB	155	printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
90abdc3b DB	156	p_dev->resource[0]->start = cf->io.win[0].base;
90abdc3b DB	157	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	158	return 0;
	159	} else {
	160	printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
5fcd4da0	161	for (j = 0x2f0; j > 0x100; j -= 0x10) {
90abdc3b DB	162	p_dev->resource[0]->start = j;
90abdc3b DB	163	if (!pcmcia_request_io(p_dev))
5fcd4da0 DB	164	return 0;
	165	}
	166	}
	167	return -ENODEV;
1da177e4 LT	168	}
1da177e4 LT	169
158e33d1	170	static int __devinit teles_cs_config(struct pcmcia_device *link)
1da177e4	171	{
1da177e4	172	local_info_t *dev;
e773cfe1	173	int i;
1da177e4 LT	174	IsdnCard_t icard;
1da177e4 LT	175
e773cfe1	176	dev_dbg(&link->dev, "teles_config(0x%p)\n", link);
1da177e4 LT	177	dev = link->priv;
1da177e4 LT	178
5fcd4da0	179	i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
e773cfe1	180	if (i != 0)
1da177e4	181	goto cs_failed;
1da177e4	182
eb14120f	183	if (!link->irq)
1da177e4	184	goto cs_failed;
1da177e4	185
1ac71e5a	186	i = pcmcia_enable_device(link);
e773cfe1	187	if (i != 0)
1da177e4	188	goto cs_failed;
1da177e4	189
1da177e4	190	/* Finally, report what we've done */
ded6a1a3	191	dev_info(&link->dev, "index 0x%02x:",
7feabb64	192	link->config_index);
1ac71e5a	193	printk(", irq %d", link->irq);
9a017a91 DB	194	if (link->resource[0])
	195	printk(" & %pR", link->resource[0]);
	196	if (link->resource[1])
	197	printk(" & %pR", link->resource[1]);
1da177e4 LT	198	printk("\n");
1da177e4 LT	199
eb14120f	200	icard.para[0] = link->irq;
9a017a91	201	icard.para[1] = link->resource[0]->start;
1da177e4 LT	202	icard.protocol = protocol;
	203	icard.typ = ISDN_CTYPE_TELESPCMCIA;
	204
	205	i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
	206	if (i < 0) {
	207	printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
9a017a91	208	i, (unsigned int) link->resource[0]->start);
1da177e4	209	teles_cs_release(link);
15b99ac1 DB	210	return -ENODEV;
	211	}
	212
	213	((local_info_t*)link->priv)->cardnr = i;
	214	return 0;
1da177e4	215
1da177e4	216	cs_failed:
1da177e4	217	teles_cs_release(link);
15b99ac1	218	return -ENODEV;
1da177e4 LT	219	} /* teles_cs_config */
	220
	221	/*======================================================================
	222
	223	After a card is removed, teles_cs_release() will unregister the net
	224	device, and release the PCMCIA configuration. If the device is
	225	still open, this will be postponed until it is closed.
	226
	227	======================================================================*/
	228
fba395ee	229	static void teles_cs_release(struct pcmcia_device *link)
1da177e4 LT	230	{
	231	local_info_t *local = link->priv;
	232
e773cfe1	233	dev_dbg(&link->dev, "teles_cs_release(0x%p)\n", link);
1da177e4 LT	234
	235	if (local) {
	236	if (local->cardnr >= 0) {
	237	/* no unregister function with hisax */
	238	HiSax_closecard(local->cardnr);
	239	}
	240	}
5f2a71fc	241
fba395ee	242	pcmcia_disable_device(link);
1da177e4 LT	243	} /* teles_cs_release */
1da177e4 LT	244
fba395ee	245	static int teles_suspend(struct pcmcia_device *link)
98e4c28b	246	{
98e4c28b DB	247	local_info_t *dev = link->priv;
98e4c28b DB	248
98e4c28b	249	dev->busy = 1;
98e4c28b DB	250
	251	return 0;
	252	}
	253
fba395ee	254	static int teles_resume(struct pcmcia_device *link)
98e4c28b	255	{
98e4c28b DB	256	local_info_t *dev = link->priv;
98e4c28b DB	257
98e4c28b DB	258	dev->busy = 0;
	259
	260	return 0;
	261	}
	262
1da177e4	263
0a10d73d DB	264	static struct pcmcia_device_id teles_ids[] = {
	265	PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
	266	PCMCIA_DEVICE_NULL,
	267	};
	268	MODULE_DEVICE_TABLE(pcmcia, teles_ids);
	269
1da177e4 LT	270	static struct pcmcia_driver teles_cs_driver = {
	271	.owner = THIS_MODULE,
	272	.drv = {
	273	.name = "teles_cs",
	274	},
15b99ac1	275	.probe = teles_probe,
158e33d1	276	.remove = __devexit_p(teles_detach),
0a10d73d	277	.id_table = teles_ids,
98e4c28b DB	278	.suspend = teles_suspend,
98e4c28b DB	279	.resume = teles_resume,
1da177e4 LT	280	};
	281
	282	static int __init init_teles_cs(void)
	283	{
	284	return pcmcia_register_driver(&teles_cs_driver);
	285	}
	286
	287	static void __exit exit_teles_cs(void)
	288	{
	289	pcmcia_unregister_driver(&teles_cs_driver);
1da177e4 LT	290	}
	291
	292	module_init(init_teles_cs);
	293	module_exit(exit_teles_cs);