[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / parport / parport_cs.c

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

    A driver for PCMCIA parallel port adapters

    (specifically, for the Quatech SPP-100 EPP card: other cards will
    probably require driver tweaks)
    
    parport_cs.c 1.29 2002/10/11 06:57:41

    The contents of this file are subject to the Mozilla Public
    License Version 1.1 (the "License"); you may not use this file
    except in compliance with the License. You may obtain a copy of
    the License at http://www.mozilla.org/MPL/

    Software distributed under the License is distributed on an "AS
    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
    implied. See the License for the specific language governing
    rights and limitations under the License.

    The initial developer of the original code is David A. Hinds
    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.

    Alternatively, the contents of this file may be used under the
    terms of the GNU General Public License version 2 (the "GPL"), in
    which case the provisions of the GPL are applicable instead of the
    above.  If you wish to allow the use of your version of this file
    only under the terms of the GPL and not to allow others to use
    your version of this file under the MPL, indicate your decision
    by deleting the provisions above and replace them with the notice
    and other provisions required by the GPL.  If you do not delete
    the provisions above, a recipient may use your version of this
    file under either the MPL or the GPL.
    
======================================================================*/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/major.h>

#include <linux/parport.h>
#include <linux/parport_pc.h>

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

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

/* Module parameters */

MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
MODULE_DESCRIPTION("PCMCIA parallel port card driver");
MODULE_LICENSE("Dual MPL/GPL");

#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)

INT_MODULE_PARM(epp_mode, 1);

#ifdef PCMCIA_DEBUG
INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
static char *version =
"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
#else
#define DEBUG(n, args...)
#endif

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

#define FORCE_EPP_MODE	0x08

typedef struct parport_info_t {
	struct pcmcia_device	*p_dev;
    int			ndev;
    dev_node_t		node;
    struct parport	*port;
} parport_info_t;

static void parport_detach(struct pcmcia_device *p_dev);
static int parport_config(struct pcmcia_device *link);
static void parport_cs_release(struct pcmcia_device *);

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

    parport_attach() creates an "instance" of the driver, allocating
    local data structures for one device.  The device is registered
    with Card Services.

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

static int parport_probe(struct pcmcia_device *link)
{
    parport_info_t *info;

    DEBUG(0, "parport_attach()\n");

    /* Create new parport device */
    info = kmalloc(sizeof(*info), GFP_KERNEL);
    if (!info) return -ENOMEM;
    memset(info, 0, sizeof(*info));
    link->priv = info;
    info->p_dev = link;

    link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
    link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
    link->conf.Attributes = CONF_ENABLE_IRQ;
    link->conf.IntType = INT_MEMORY_AND_IO;

    link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
    return parport_config(link);
} /* parport_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 parport_detach(struct pcmcia_device *link)
{
    DEBUG(0, "parport_detach(0x%p)\n", link);

    if (link->state & DEV_CONFIG)
	parport_cs_release(link);

    kfree(link->priv);
} /* parport_detach */

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

    parport_config() is scheduled to run after a CARD_INSERTION event
    is received, to configure the PCMCIA socket, and to make the
    parport device available to the system.

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

#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

static int parport_config(struct pcmcia_device *link)
{
    parport_info_t *info = link->priv;
    tuple_t tuple;
    u_short buf[128];
    cisparse_t parse;
    cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
    cistpl_cftable_entry_t dflt = { 0 };
    struct parport *p;
    int last_ret, last_fn;
    
    DEBUG(0, "parport_config(0x%p)\n", link);
    
    tuple.TupleData = (cisdata_t *)buf;
    tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
    tuple.Attributes = 0;
    tuple.DesiredTuple = CISTPL_CONFIG;
    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
    CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
    CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
    link->conf.ConfigBase = parse.config.base;
    link->conf.Present = parse.config.rmask[0];
    
    /* Configure card */
    link->state |= DEV_CONFIG;

    tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
    tuple.Attributes = 0;
    CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
    while (1) {
	if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
		pcmcia_parse_tuple(link, &tuple, &parse) != 0)
	    goto next_entry;

	if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
	    cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
	    link->conf.ConfigIndex = cfg->index;
	    if (epp_mode)
		link->conf.ConfigIndex |= FORCE_EPP_MODE;
	    link->io.BasePort1 = io->win[0].base;
	    link->io.NumPorts1 = io->win[0].len;
	    link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
	    if (io->nwin == 2) {
		link->io.BasePort2 = io->win[1].base;
		link->io.NumPorts2 = io->win[1].len;
	    }
	    if (pcmcia_request_io(link, &link->io) != 0)
		goto next_entry;
	    /* If we've got this far, we're done */
	    break;
	}
	
    next_entry:
	if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
	CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
    }
    
    CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
    CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));

    p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
			      link->irq.AssignedIRQ, PARPORT_DMA_NONE,
			      NULL);
    if (p == NULL) {
	printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
	       "0x%3x, irq %u failed\n", link->io.BasePort1,
	       link->irq.AssignedIRQ);
	goto failed;
    }

    p->modes |= PARPORT_MODE_PCSPP;
    if (epp_mode)
	p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
    info->ndev = 1;
    info->node.major = LP_MAJOR;
    info->node.minor = p->number;
    info->port = p;
    strcpy(info->node.dev_name, p->name);
    link->dev_node = &info->node;

    link->state &= ~DEV_CONFIG_PENDING;
    return 0;

cs_failed:
    cs_error(link, last_fn, last_ret);
failed:
    parport_cs_release(link);
    link->state &= ~DEV_CONFIG_PENDING;
    return -ENODEV;
} /* parport_config */

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

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

void parport_cs_release(struct pcmcia_device *link)
{
	parport_info_t *info = link->priv;

	DEBUG(0, "parport_release(0x%p)\n", link);

	if (info->ndev) {
		struct parport *p = info->port;
		parport_pc_unregister_port(p);
	}
	info->ndev = 0;

	pcmcia_disable_device(link);
} /* parport_cs_release */


static struct pcmcia_device_id parport_ids[] = {
	PCMCIA_DEVICE_FUNC_ID(3),
	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, parport_ids);

static struct pcmcia_driver parport_cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "parport_cs",
	},
	.probe		= parport_probe,
	.remove		= parport_detach,
	.id_table	= parport_ids,
};

static int __init init_parport_cs(void)
{
	return pcmcia_register_driver(&parport_cs_driver);
}

static void __exit exit_parport_cs(void)
{
	pcmcia_unregister_driver(&parport_cs_driver);
}

module_init(init_parport_cs);
module_exit(exit_parport_cs);
Commit	Line	Data
1da177e4 LT	1	/*======================================================================
	2
	3	A driver for PCMCIA parallel port adapters
	4
	5	(specifically, for the Quatech SPP-100 EPP card: other cards will
	6	probably require driver tweaks)
	7
	8	parport_cs.c 1.29 2002/10/11 06:57:41
	9
	10	The contents of this file are subject to the Mozilla Public
	11	License Version 1.1 (the "License"); you may not use this file
	12	except in compliance with the License. You may obtain a copy of
	13	the License at http://www.mozilla.org/MPL/
	14
	15	Software distributed under the License is distributed on an "AS
	16	IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
	17	implied. See the License for the specific language governing
	18	rights and limitations under the License.
	19
	20	The initial developer of the original code is David A. Hinds
	21	<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	22	are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	23
	24	Alternatively, the contents of this file may be used under the
	25	terms of the GNU General Public License version 2 (the "GPL"), in
	26	which case the provisions of the GPL are applicable instead of the
	27	above. If you wish to allow the use of your version of this file
	28	only under the terms of the GPL and not to allow others to use
	29	your version of this file under the MPL, indicate your decision
	30	by deleting the provisions above and replace them with the notice
	31	and other provisions required by the GPL. If you do not delete
	32	the provisions above, a recipient may use your version of this
	33	file under either the MPL or the GPL.
	34
	35	======================================================================*/
	36
	37	#include <linux/kernel.h>
	38	#include <linux/module.h>
	39	#include <linux/init.h>
	40	#include <linux/sched.h>
	41	#include <linux/ptrace.h>
	42	#include <linux/slab.h>
	43	#include <linux/string.h>
	44	#include <linux/timer.h>
	45	#include <linux/ioport.h>
	46	#include <linux/major.h>
	47
	48	#include <linux/parport.h>
	49	#include <linux/parport_pc.h>
	50
1da177e4 LT	51	#include <pcmcia/cs_types.h>
	52	#include <pcmcia/cs.h>
	53	#include <pcmcia/cistpl.h>
	54	#include <pcmcia/ds.h>
	55	#include <pcmcia/cisreg.h>
	56	#include <pcmcia/ciscode.h>
	57
	58	/====================================================================/
	59
	60	/* Module parameters */
	61
	62	MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
	63	MODULE_DESCRIPTION("PCMCIA parallel port card driver");
	64	MODULE_LICENSE("Dual MPL/GPL");
	65
	66	#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
	67
	68	INT_MODULE_PARM(epp_mode, 1);
	69
	70	#ifdef PCMCIA_DEBUG
	71	INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
	72	#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
	73	static char *version =
	74	"parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
	75	#else
	76	#define DEBUG(n, args...)
	77	#endif
	78
	79	/====================================================================/
	80
	81	#define FORCE_EPP_MODE 0x08
	82
	83	typedef struct parport_info_t {
fd238232	84	struct pcmcia_device *p_dev;
1da177e4 LT	85	int ndev;
	86	dev_node_t node;
	87	struct parport *port;
	88	} parport_info_t;
	89
cc3b4866	90	static void parport_detach(struct pcmcia_device *p_dev);
15b99ac1	91	static int parport_config(struct pcmcia_device *link);
fba395ee	92	static void parport_cs_release(struct pcmcia_device *);
1da177e4 LT	93
	94	/*======================================================================
	95
	96	parport_attach() creates an "instance" of the driver, allocating
	97	local data structures for one device. The device is registered
	98	with Card Services.
	99
	100	======================================================================*/
	101
15b99ac1	102	static int parport_probe(struct pcmcia_device *link)
1da177e4 LT	103	{
1da177e4 LT	104	parport_info_t *info;
f8cfa618	105
1da177e4 LT	106	DEBUG(0, "parport_attach()\n");
	107
	108	/* Create new parport device */
	109	info = kmalloc(sizeof(*info), GFP_KERNEL);
f8cfa618	110	if (!info) return -ENOMEM;
1da177e4	111	memset(info, 0, sizeof(*info));
fd238232	112	link->priv = info;
fba395ee	113	info->p_dev = link;
1da177e4 LT	114
	115	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	116	link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
	117	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
	118	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
	119	link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4	120	link->conf.IntType = INT_MEMORY_AND_IO;
f8cfa618	121
f8cfa618	122	link->state \|= DEV_PRESENT \| DEV_CONFIG_PENDING;
15b99ac1	123	return parport_config(link);
1da177e4 LT	124	} /* parport_attach */
	125
	126	/*======================================================================
	127
	128	This deletes a driver "instance". The device is de-registered
	129	with Card Services. If it has been released, all local data
	130	structures are freed. Otherwise, the structures will be freed
	131	when the device is released.
	132
	133	======================================================================*/
	134
fba395ee	135	static void parport_detach(struct pcmcia_device *link)
1da177e4	136	{
1da177e4	137	DEBUG(0, "parport_detach(0x%p)\n", link);
cc3b4866	138
1da177e4 LT	139	if (link->state & DEV_CONFIG)
1da177e4 LT	140	parport_cs_release(link);
cc3b4866	141
1da177e4	142	kfree(link->priv);
1da177e4 LT	143	} /* parport_detach */
	144
	145	/*======================================================================
	146
	147	parport_config() is scheduled to run after a CARD_INSERTION event
	148	is received, to configure the PCMCIA socket, and to make the
	149	parport device available to the system.
	150
	151	======================================================================*/
	152
	153	#define CS_CHECK(fn, ret) \
	154	do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
	155
15b99ac1	156	static int parport_config(struct pcmcia_device *link)
1da177e4	157	{
1da177e4 LT	158	parport_info_t *info = link->priv;
	159	tuple_t tuple;
	160	u_short buf[128];
	161	cisparse_t parse;
1da177e4 LT	162	cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
	163	cistpl_cftable_entry_t dflt = { 0 };
	164	struct parport *p;
	165	int last_ret, last_fn;
	166
	167	DEBUG(0, "parport_config(0x%p)\n", link);
	168
	169	tuple.TupleData = (cisdata_t *)buf;
	170	tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
	171	tuple.Attributes = 0;
	172	tuple.DesiredTuple = CISTPL_CONFIG;
fba395ee DB	173	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
	174	CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
	175	CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
1da177e4 LT	176	link->conf.ConfigBase = parse.config.base;
	177	link->conf.Present = parse.config.rmask[0];
	178
	179	/* Configure card */
	180	link->state \|= DEV_CONFIG;
	181
1da177e4 LT	182	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1da177e4 LT	183	tuple.Attributes = 0;
fba395ee	184	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
1da177e4	185	while (1) {
fba395ee DB	186	if (pcmcia_get_tuple_data(link, &tuple) != 0 \|\|
fba395ee DB	187	pcmcia_parse_tuple(link, &tuple, &parse) != 0)
1da177e4 LT	188	goto next_entry;
	189
	190	if ((cfg->io.nwin > 0) \|\| (dflt.io.nwin > 0)) {
	191	cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
	192	link->conf.ConfigIndex = cfg->index;
	193	if (epp_mode)
	194	link->conf.ConfigIndex \|= FORCE_EPP_MODE;
	195	link->io.BasePort1 = io->win[0].base;
	196	link->io.NumPorts1 = io->win[0].len;
	197	link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
	198	if (io->nwin == 2) {
	199	link->io.BasePort2 = io->win[1].base;
	200	link->io.NumPorts2 = io->win[1].len;
	201	}
fba395ee	202	if (pcmcia_request_io(link, &link->io) != 0)
1da177e4 LT	203	goto next_entry;
	204	/* If we've got this far, we're done */
	205	break;
	206	}
	207
	208	next_entry:
	209	if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
fba395ee	210	CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
1da177e4 LT	211	}
1da177e4 LT	212
fba395ee DB	213	CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
fba395ee DB	214	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4	215
1da177e4 LT	216	p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
	217	link->irq.AssignedIRQ, PARPORT_DMA_NONE,
	218	NULL);
	219	if (p == NULL) {
	220	printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
	221	"0x%3x, irq %u failed\n", link->io.BasePort1,
	222	link->irq.AssignedIRQ);
	223	goto failed;
	224	}
	225
	226	p->modes \|= PARPORT_MODE_PCSPP;
	227	if (epp_mode)
	228	p->modes \|= PARPORT_MODE_TRISTATE \| PARPORT_MODE_EPP;
	229	info->ndev = 1;
	230	info->node.major = LP_MAJOR;
	231	info->node.minor = p->number;
	232	info->port = p;
	233	strcpy(info->node.dev_name, p->name);
fd238232	234	link->dev_node = &info->node;
1da177e4 LT	235
1da177e4 LT	236	link->state &= ~DEV_CONFIG_PENDING;
15b99ac1 DB	237	return 0;
15b99ac1 DB	238
1da177e4	239	cs_failed:
fba395ee	240	cs_error(link, last_fn, last_ret);
1da177e4 LT	241	failed:
	242	parport_cs_release(link);
	243	link->state &= ~DEV_CONFIG_PENDING;
15b99ac1	244	return -ENODEV;
1da177e4 LT	245	} /* parport_config */
	246
	247	/*======================================================================
	248
	249	After a card is removed, parport_cs_release() will unregister the
	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	void parport_cs_release(struct pcmcia_device *link)
1da177e4	256	{
5f2a71fc	257	parport_info_t *info = link->priv;
1da177e4	258
5f2a71fc DB	259	DEBUG(0, "parport_release(0x%p)\n", link);
	260
	261	if (info->ndev) {
	262	struct parport *p = info->port;
	263	parport_pc_unregister_port(p);
	264	}
	265	info->ndev = 0;
1da177e4	266
fba395ee	267	pcmcia_disable_device(link);
1da177e4 LT	268	} /* parport_cs_release */
1da177e4 LT	269
98e4c28b	270
476835af DB	271	static struct pcmcia_device_id parport_ids[] = {
	272	PCMCIA_DEVICE_FUNC_ID(3),
	273	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
	274	PCMCIA_DEVICE_NULL
	275	};
	276	MODULE_DEVICE_TABLE(pcmcia, parport_ids);
	277
1da177e4 LT	278	static struct pcmcia_driver parport_cs_driver = {
	279	.owner = THIS_MODULE,
	280	.drv = {
	281	.name = "parport_cs",
	282	},
15b99ac1	283	.probe = parport_probe,
cc3b4866	284	.remove = parport_detach,
476835af	285	.id_table = parport_ids,
1da177e4 LT	286	};
	287
	288	static int __init init_parport_cs(void)
	289	{
	290	return pcmcia_register_driver(&parport_cs_driver);
	291	}
	292
	293	static void __exit exit_parport_cs(void)
	294	{
	295	pcmcia_unregister_driver(&parport_cs_driver);
1da177e4 LT	296	}
	297
	298	module_init(init_parport_cs);
	299	module_exit(exit_parport_cs);