[deliverable/linux.git] / drivers / ata / pata_platform.c

/*
 * Generic platform device PATA driver
 *
 * Copyright (C) 2006 - 2007  Paul Mundt
 *
 * Based on pata_pcmcia:
 *
 *   Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>

#define DRV_NAME "pata_platform"
#define DRV_VERSION "1.2"

static int pio_mask = 1;

/*
 * Provide our own set_mode() as we don't want to change anything that has
 * already been configured..
 */
static int pata_platform_set_mode(struct ata_link *link, struct ata_device **unused)
{
	struct ata_device *dev;

	ata_link_for_each_dev(dev, link) {
		if (ata_dev_enabled(dev)) {
			/* We don't really care */
			dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
			dev->xfer_shift = ATA_SHIFT_PIO;
			dev->flags |= ATA_DFLAG_PIO;
			ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
		}
	}
	return 0;
}

static struct scsi_host_template pata_platform_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
};

static struct ata_port_operations pata_platform_port_ops = {
	.set_mode		= pata_platform_set_mode,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= ata_bmdma_error_handler,
	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
	.cable_detect		= ata_cable_unknown,

	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,

	.data_xfer		= ata_data_xfer_noirq,

	.irq_clear		= ata_noop_irq_clear,
	.irq_on			= ata_irq_on,
};

static void pata_platform_setup_port(struct ata_ioports *ioaddr,
				     unsigned int shift)
{
	/* Fixup the port shift for platforms that need it */
	ioaddr->data_addr	= ioaddr->cmd_addr + (ATA_REG_DATA    << shift);
	ioaddr->error_addr	= ioaddr->cmd_addr + (ATA_REG_ERR     << shift);
	ioaddr->feature_addr	= ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
	ioaddr->nsect_addr	= ioaddr->cmd_addr + (ATA_REG_NSECT   << shift);
	ioaddr->lbal_addr	= ioaddr->cmd_addr + (ATA_REG_LBAL    << shift);
	ioaddr->lbam_addr	= ioaddr->cmd_addr + (ATA_REG_LBAM    << shift);
	ioaddr->lbah_addr	= ioaddr->cmd_addr + (ATA_REG_LBAH    << shift);
	ioaddr->device_addr	= ioaddr->cmd_addr + (ATA_REG_DEVICE  << shift);
	ioaddr->status_addr	= ioaddr->cmd_addr + (ATA_REG_STATUS  << shift);
	ioaddr->command_addr	= ioaddr->cmd_addr + (ATA_REG_CMD     << shift);
}

/**
 *	__pata_platform_probe		-	attach a platform interface
 *	@dev: device
 *	@io_res: Resource representing I/O base
 *	@ctl_res: Resource representing CTL base
 *	@irq_res: Resource representing IRQ and its flags
 *	@ioport_shift: I/O port shift
 *	@__pio_mask: PIO mask
 *
 *	Register a platform bus IDE interface. Such interfaces are PIO and we
 *	assume do not support IRQ sharing.
 *
 *	Platform devices are expected to contain at least 2 resources per port:
 *
 *		- I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
 *		- CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
 *
 *	and optionally:
 *
 *		- IRQ	   (IORESOURCE_IRQ)
 *
 *	If the base resources are both mem types, the ioremap() is handled
 *	here. For IORESOURCE_IO, it's assumed that there's no remapping
 *	necessary.
 *
 *	If no IRQ resource is present, PIO polling mode is used instead.
 */
int __devinit __pata_platform_probe(struct device *dev,
				    struct resource *io_res,
				    struct resource *ctl_res,
				    struct resource *irq_res,
				    unsigned int ioport_shift,
				    int __pio_mask)
{
	struct ata_host *host;
	struct ata_port *ap;
	unsigned int mmio;
	int irq = 0;
	int irq_flags = 0;

	/*
	 * Check for MMIO
	 */
	mmio = (( io_res->flags == IORESOURCE_MEM) &&
		(ctl_res->flags == IORESOURCE_MEM));

	/*
	 * And the IRQ
	 */
	if (irq_res && irq_res->start > 0) {
		irq = irq_res->start;
		irq_flags = irq_res->flags;
	}

	/*
	 * Now that that's out of the way, wire up the port..
	 */
	host = ata_host_alloc(dev, 1);
	if (!host)
		return -ENOMEM;
	ap = host->ports[0];

	ap->ops = &pata_platform_port_ops;
	ap->pio_mask = __pio_mask;
	ap->flags |= ATA_FLAG_SLAVE_POSS;

	/*
	 * Use polling mode if there's no IRQ
	 */
	if (!irq) {
		ap->flags |= ATA_FLAG_PIO_POLLING;
		ata_port_desc(ap, "no IRQ, using PIO polling");
	}

	/*
	 * Handle the MMIO case
	 */
	if (mmio) {
		ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
				io_res->end - io_res->start + 1);
		ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
				ctl_res->end - ctl_res->start + 1);
	} else {
		ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
				io_res->end - io_res->start + 1);
		ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
				ctl_res->end - ctl_res->start + 1);
	}
	if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
		dev_err(dev, "failed to map IO/CTL base\n");
		return -ENOMEM;
	}

	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;

	pata_platform_setup_port(&ap->ioaddr, ioport_shift);

	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
		      (unsigned long long)io_res->start,
		      (unsigned long long)ctl_res->start);

	/* activate */
	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
				 irq_flags, &pata_platform_sht);
}
EXPORT_SYMBOL_GPL(__pata_platform_probe);

/**
 *	__pata_platform_remove		-	unplug a platform interface
 *	@dev: device
 *
 *	A platform bus ATA device has been unplugged. Perform the needed
 *	cleanup. Also called on module unload for any active devices.
 */
int __devexit __pata_platform_remove(struct device *dev)
{
	struct ata_host *host = dev_get_drvdata(dev);

	ata_host_detach(host);

	return 0;
}
EXPORT_SYMBOL_GPL(__pata_platform_remove);

static int __devinit pata_platform_probe(struct platform_device *pdev)
{
	struct resource *io_res;
	struct resource *ctl_res;
	struct resource *irq_res;
	struct pata_platform_info *pp_info = pdev->dev.platform_data;

	/*
	 * Simple resource validation ..
	 */
	if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
		dev_err(&pdev->dev, "invalid number of resources\n");
		return -EINVAL;
	}

	/*
	 * Get the I/O base first
	 */
	io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	if (io_res == NULL) {
		io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (unlikely(io_res == NULL))
			return -EINVAL;
	}

	/*
	 * Then the CTL base
	 */
	ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
	if (ctl_res == NULL) {
		ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
		if (unlikely(ctl_res == NULL))
			return -EINVAL;
	}

	/*
	 * And the IRQ
	 */
	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (irq_res)
		irq_res->flags = pp_info ? pp_info->irq_flags : 0;

	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
				     pp_info ? pp_info->ioport_shift : 0,
				     pio_mask);
}

static int __devexit pata_platform_remove(struct platform_device *pdev)
{
	return __pata_platform_remove(&pdev->dev);
}

static struct platform_driver pata_platform_driver = {
	.probe		= pata_platform_probe,
	.remove		= __devexit_p(pata_platform_remove),
	.driver = {
		.name		= DRV_NAME,
		.owner		= THIS_MODULE,
	},
};

static int __init pata_platform_init(void)
{
	return platform_driver_register(&pata_platform_driver);
}

static void __exit pata_platform_exit(void)
{
	platform_driver_unregister(&pata_platform_driver);
}
module_init(pata_platform_init);
module_exit(pata_platform_exit);

module_param(pio_mask, int, 0);

MODULE_AUTHOR("Paul Mundt");
MODULE_DESCRIPTION("low-level driver for platform device ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
a20c9e82 PM	1	/*
	2	* Generic platform device PATA driver
	3	*
f7fc0ceb	4	* Copyright (C) 2006 - 2007 Paul Mundt
a20c9e82 PM	5	*
	6	* Based on pata_pcmcia:
	7	*
	8	* Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
	9	*
	10	* This file is subject to the terms and conditions of the GNU General Public
	11	* License. See the file "COPYING" in the main directory of this archive
	12	* for more details.
	13	*/
	14	#include <linux/kernel.h>
	15	#include <linux/module.h>
	16	#include <linux/init.h>
	17	#include <linux/blkdev.h>
	18	#include <scsi/scsi_host.h>
	19	#include <linux/ata.h>
	20	#include <linux/libata.h>
	21	#include <linux/platform_device.h>
0a87e3e9	22	#include <linux/ata_platform.h>
a20c9e82 PM	23
a20c9e82 PM	24	#define DRV_NAME "pata_platform"
f7fc0ceb	25	#define DRV_VERSION "1.2"
a20c9e82 PM	26
	27	static int pio_mask = 1;
	28
	29	/*
	30	* Provide our own set_mode() as we don't want to change anything that has
	31	* already been configured..
	32	*/
0260731f	33	static int pata_platform_set_mode(struct ata_link link, struct ata_device *unused)
a20c9e82	34	{
f58229f8	35	struct ata_device *dev;
a20c9e82	36
0260731f	37	ata_link_for_each_dev(dev, link) {
a20c9e82 PM	38	if (ata_dev_enabled(dev)) {
	39	/* We don't really care */
	40	dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
	41	dev->xfer_shift = ATA_SHIFT_PIO;
	42	dev->flags \|= ATA_DFLAG_PIO;
e852f705	43	ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
a20c9e82 PM	44	}
a20c9e82 PM	45	}
161c888b	46	return 0;
a20c9e82 PM	47	}
a20c9e82 PM	48
a20c9e82 PM	49	static struct scsi_host_template pata_platform_sht = {
	50	.module = THIS_MODULE,
	51	.name = DRV_NAME,
	52	.ioctl = ata_scsi_ioctl,
	53	.queuecommand = ata_scsi_queuecmd,
	54	.can_queue = ATA_DEF_QUEUE,
	55	.this_id = ATA_SHT_THIS_ID,
	56	.sg_tablesize = LIBATA_MAX_PRD,
a20c9e82 PM	57	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	58	.emulated = ATA_SHT_EMULATED,
	59	.use_clustering = ATA_SHT_USE_CLUSTERING,
	60	.proc_name = DRV_NAME,
	61	.dma_boundary = ATA_DMA_BOUNDARY,
	62	.slave_configure = ata_scsi_slave_config,
c972b60b	63	.slave_destroy = ata_scsi_slave_destroy,
a20c9e82 PM	64	.bios_param = ata_std_bios_param,
	65	};
	66
	67	static struct ata_port_operations pata_platform_port_ops = {
	68	.set_mode = pata_platform_set_mode,
	69
a20c9e82 PM	70	.tf_load = ata_tf_load,
	71	.tf_read = ata_tf_read,
	72	.check_status = ata_check_status,
	73	.exec_command = ata_exec_command,
	74	.dev_select = ata_std_dev_select,
	75
	76	.freeze = ata_bmdma_freeze,
	77	.thaw = ata_bmdma_thaw,
	78	.error_handler = ata_bmdma_error_handler,
	79	.post_internal_cmd = ata_bmdma_post_internal_cmd,
570cb62d	80	.cable_detect = ata_cable_unknown,
a20c9e82 PM	81
	82	.qc_prep = ata_qc_prep,
	83	.qc_issue = ata_qc_issue_prot,
	84
0d5ff566	85	.data_xfer = ata_data_xfer_noirq,
a20c9e82	86
358f9a77	87	.irq_clear = ata_noop_irq_clear,
246ce3b6	88	.irq_on = ata_irq_on,
a20c9e82 PM	89	};
	90
	91	static void pata_platform_setup_port(struct ata_ioports *ioaddr,
cf03613e	92	unsigned int shift)
a20c9e82	93	{
a20c9e82	94	/* Fixup the port shift for platforms that need it */
a20c9e82 PM	95	ioaddr->data_addr = ioaddr->cmd_addr + (ATA_REG_DATA << shift);
	96	ioaddr->error_addr = ioaddr->cmd_addr + (ATA_REG_ERR << shift);
	97	ioaddr->feature_addr = ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
	98	ioaddr->nsect_addr = ioaddr->cmd_addr + (ATA_REG_NSECT << shift);
	99	ioaddr->lbal_addr = ioaddr->cmd_addr + (ATA_REG_LBAL << shift);
	100	ioaddr->lbam_addr = ioaddr->cmd_addr + (ATA_REG_LBAM << shift);
	101	ioaddr->lbah_addr = ioaddr->cmd_addr + (ATA_REG_LBAH << shift);
	102	ioaddr->device_addr = ioaddr->cmd_addr + (ATA_REG_DEVICE << shift);
	103	ioaddr->status_addr = ioaddr->cmd_addr + (ATA_REG_STATUS << shift);
	104	ioaddr->command_addr = ioaddr->cmd_addr + (ATA_REG_CMD << shift);
	105	}
	106
	107	/**
cf03613e AV	108	* __pata_platform_probe - attach a platform interface
	109	* @dev: device
	110	* @io_res: Resource representing I/O base
	111	* @ctl_res: Resource representing CTL base
	112	* @irq_res: Resource representing IRQ and its flags
	113	* @ioport_shift: I/O port shift
	114	* @__pio_mask: PIO mask
a20c9e82 PM	115	*
	116	* Register a platform bus IDE interface. Such interfaces are PIO and we
	117	* assume do not support IRQ sharing.
	118	*
f7fc0ceb	119	* Platform devices are expected to contain at least 2 resources per port:
a20c9e82 PM	120	*
	121	* - I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
	122	* - CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
f7fc0ceb PM	123	*
	124	* and optionally:
	125	*
a20c9e82 PM	126	* - IRQ (IORESOURCE_IRQ)
	127	*
	128	* If the base resources are both mem types, the ioremap() is handled
	129	* here. For IORESOURCE_IO, it's assumed that there's no remapping
	130	* necessary.
f7fc0ceb PM	131	*
f7fc0ceb PM	132	* If no IRQ resource is present, PIO polling mode is used instead.
a20c9e82	133	*/
cf03613e AV	134	int __devinit __pata_platform_probe(struct device *dev,
	135	struct resource *io_res,
	136	struct resource *ctl_res,
	137	struct resource *irq_res,
	138	unsigned int ioport_shift,
	139	int __pio_mask)
a20c9e82	140	{
5d728824 TH	141	struct ata_host *host;
5d728824 TH	142	struct ata_port *ap;
a20c9e82	143	unsigned int mmio;
cf03613e AV	144	int irq = 0;
cf03613e AV	145	int irq_flags = 0;
a20c9e82 PM	146
	147	/*
	148	* Check for MMIO
	149	*/
	150	mmio = (( io_res->flags == IORESOURCE_MEM) &&
	151	(ctl_res->flags == IORESOURCE_MEM));
	152
f7fc0ceb PM	153	/*
	154	* And the IRQ
	155	*/
cf03613e AV	156	if (irq_res && irq_res->start > 0) {
	157	irq = irq_res->start;
	158	irq_flags = irq_res->flags;
	159	}
f7fc0ceb	160
a20c9e82 PM	161	/*
	162	* Now that that's out of the way, wire up the port..
	163	*/
cf03613e	164	host = ata_host_alloc(dev, 1);
5d728824 TH	165	if (!host)
	166	return -ENOMEM;
	167	ap = host->ports[0];
	168
	169	ap->ops = &pata_platform_port_ops;
cf03613e	170	ap->pio_mask = __pio_mask;
5d728824	171	ap->flags \|= ATA_FLAG_SLAVE_POSS;
a20c9e82	172
f7fc0ceb PM	173	/*
	174	* Use polling mode if there's no IRQ
	175	*/
	176	if (!irq) {
	177	ap->flags \|= ATA_FLAG_PIO_POLLING;
	178	ata_port_desc(ap, "no IRQ, using PIO polling");
	179	}
	180
a20c9e82 PM	181	/*
	182	* Handle the MMIO case
	183	*/
	184	if (mmio) {
cf03613e	185	ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
0d5ff566	186	io_res->end - io_res->start + 1);
cf03613e	187	ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
0d5ff566	188	ctl_res->end - ctl_res->start + 1);
a20c9e82	189	} else {
cf03613e	190	ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
0d5ff566	191	io_res->end - io_res->start + 1);
cf03613e	192	ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
0d5ff566 TH	193	ctl_res->end - ctl_res->start + 1);
0d5ff566 TH	194	}
5d728824	195	if (!ap->ioaddr.cmd_addr \|\| !ap->ioaddr.ctl_addr) {
cf03613e	196	dev_err(dev, "failed to map IO/CTL base\n");
0d5ff566	197	return -ENOMEM;
a20c9e82 PM	198	}
a20c9e82 PM	199
5d728824	200	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
a20c9e82	201
cf03613e	202	pata_platform_setup_port(&ap->ioaddr, ioport_shift);
a20c9e82	203
cbcdd875 TH	204	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
	205	(unsigned long long)io_res->start,
	206	(unsigned long long)ctl_res->start);
	207
5d728824	208	/* activate */
f7fc0ceb	209	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
cf03613e	210	irq_flags, &pata_platform_sht);
a20c9e82	211	}
cf03613e	212	EXPORT_SYMBOL_GPL(__pata_platform_probe);
a20c9e82 PM	213
a20c9e82 PM	214	/**
cf03613e AV	215	* __pata_platform_remove - unplug a platform interface
cf03613e AV	216	* @dev: device
a20c9e82 PM	217	*
	218	* A platform bus ATA device has been unplugged. Perform the needed
	219	* cleanup. Also called on module unload for any active devices.
	220	*/
cf03613e	221	int __devexit __pata_platform_remove(struct device *dev)
a20c9e82	222	{
a20c9e82 PM	223	struct ata_host *host = dev_get_drvdata(dev);
a20c9e82 PM	224
1a68ff13	225	ata_host_detach(host);
a20c9e82 PM	226
	227	return 0;
	228	}
cf03613e AV	229	EXPORT_SYMBOL_GPL(__pata_platform_remove);
	230
	231	static int __devinit pata_platform_probe(struct platform_device *pdev)
	232	{
	233	struct resource *io_res;
	234	struct resource *ctl_res;
	235	struct resource *irq_res;
	236	struct pata_platform_info *pp_info = pdev->dev.platform_data;
	237
	238	/*
	239	* Simple resource validation ..
	240	*/
	241	if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
	242	dev_err(&pdev->dev, "invalid number of resources\n");
	243	return -EINVAL;
	244	}
	245
	246	/*
	247	* Get the I/O base first
	248	*/
	249	io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
	250	if (io_res == NULL) {
	251	io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	252	if (unlikely(io_res == NULL))
	253	return -EINVAL;
	254	}
	255
	256	/*
	257	* Then the CTL base
	258	*/
	259	ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
	260	if (ctl_res == NULL) {
	261	ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	262	if (unlikely(ctl_res == NULL))
	263	return -EINVAL;
	264	}
	265
	266	/*
	267	* And the IRQ
	268	*/
	269	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	270	if (irq_res)
	271	irq_res->flags = pp_info ? pp_info->irq_flags : 0;
	272
	273	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
	274	pp_info ? pp_info->ioport_shift : 0,
	275	pio_mask);
	276	}
	277
	278	static int __devexit pata_platform_remove(struct platform_device *pdev)
	279	{
	280	return __pata_platform_remove(&pdev->dev);
	281	}
a20c9e82 PM	282
	283	static struct platform_driver pata_platform_driver = {
	284	.probe = pata_platform_probe,
	285	.remove = __devexit_p(pata_platform_remove),
	286	.driver = {
	287	.name = DRV_NAME,
	288	.owner = THIS_MODULE,
	289	},
	290	};
	291
	292	static int __init pata_platform_init(void)
	293	{
	294	return platform_driver_register(&pata_platform_driver);
	295	}
	296
	297	static void __exit pata_platform_exit(void)
	298	{
	299	platform_driver_unregister(&pata_platform_driver);
	300	}
	301	module_init(pata_platform_init);
	302	module_exit(pata_platform_exit);
	303
	304	module_param(pio_mask, int, 0);
	305
	306	MODULE_AUTHOR("Paul Mundt");
	307	MODULE_DESCRIPTION("low-level driver for platform device ATA");
	308	MODULE_LICENSE("GPL");
	309	MODULE_VERSION(DRV_VERSION);