[linux.git] / drivers / ata / pata_isapnp.c


/*
 *   pata-isapnp.c - ISA PnP PATA controller driver.
 *   Copyright 2005/2006 Red Hat Inc, all rights reserved.
 *
 *   Based in part on ide-pnp.c by Andrey Panin <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/isapnp.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>

#define DRV_NAME "pata_isapnp"
#define DRV_VERSION "0.2.5"

static struct scsi_host_template isapnp_sht = {
	ATA_PIO_SHT(DRV_NAME),
};

static struct ata_port_operations isapnp_port_ops = {
	.inherits	= &ata_sff_port_ops,
	.cable_detect	= ata_cable_40wire,
};

static struct ata_port_operations isapnp_noalt_port_ops = {
	.inherits	= &ata_sff_port_ops,
	.cable_detect	= ata_cable_40wire,
	/* No altstatus so we don't want to use the lost interrupt poll */
	.lost_interrupt = ATA_OP_NULL,
};

/**
 *	isapnp_init_one		-	attach an isapnp interface
 *	@idev: PnP device
 *	@dev_id: matching detect line
 *
 *	Register an ISA bus IDE interface. Such interfaces are PIO 0 and
 *	non shared IRQ.
 */

static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
{
	struct ata_host *host;
	struct ata_port *ap;
	void __iomem *cmd_addr, *ctl_addr;
	int irq = 0;
	irq_handler_t handler = NULL;

	if (pnp_port_valid(idev, 0) == 0)
		return -ENODEV;

	if (pnp_irq_valid(idev, 0)) {
		irq = pnp_irq(idev, 0);
		handler = ata_sff_interrupt;
	}

	/* allocate host */
	host = ata_host_alloc(&idev->dev, 1);
	if (!host)
		return -ENOMEM;

	/* acquire resources and fill host */
	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	if (!cmd_addr)
		return -ENOMEM;

	ap = host->ports[0];

	ap->ops = &isapnp_noalt_port_ops;
	ap->pio_mask = ATA_PIO0;
	ap->flags |= ATA_FLAG_SLAVE_POSS;

	ap->ioaddr.cmd_addr = cmd_addr;

	if (pnp_port_valid(idev, 1) == 0) {
		ctl_addr = devm_ioport_map(&idev->dev,
					   pnp_port_start(idev, 1), 1);
		ap->ioaddr.altstatus_addr = ctl_addr;
		ap->ioaddr.ctl_addr = ctl_addr;
		ap->ops = &isapnp_port_ops;
	}

	ata_sff_std_ports(&ap->ioaddr);

	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
		      (unsigned long long)pnp_port_start(idev, 0),
		      (unsigned long long)pnp_port_start(idev, 1));

	/* activate */
	return ata_host_activate(host, irq, handler, 0,
				 &isapnp_sht);
}

/**
 *	isapnp_remove_one	-	unplug an isapnp interface
 *	@idev: PnP device
 *
 *	Remove a previously configured PnP ATA port. Called only on module
 *	unload events as the core does not currently deal with ISAPnP docking.
 */

static void isapnp_remove_one(struct pnp_dev *idev)
{
	struct device *dev = &idev->dev;
	struct ata_host *host = dev_get_drvdata(dev);

	ata_host_detach(host);
}

static struct pnp_device_id isapnp_devices[] = {
  	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	{.id = "PNP0600", .driver_data = 0},
	{.id = ""}
};

MODULE_DEVICE_TABLE(pnp, isapnp_devices);

static struct pnp_driver isapnp_driver = {
	.name		= DRV_NAME,
	.id_table	= isapnp_devices,
	.probe		= isapnp_init_one,
	.remove		= isapnp_remove_one,
};

static int __init isapnp_init(void)
{
	return pnp_register_driver(&isapnp_driver);
}

static void __exit isapnp_exit(void)
{
	pnp_unregister_driver(&isapnp_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

module_init(isapnp_init);
module_exit(isapnp_exit);
Commit	Line	Data
669a5db4 JG	1
	2	/*
	3	* pata-isapnp.c - ISA PnP PATA controller driver.
ab771630	4	* Copyright 2005/2006 Red Hat Inc, all rights reserved.
669a5db4 JG	5	*
	6	* Based in part on ide-pnp.c by Andrey Panin <[email protected]>
	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/module.h>
	11	#include <linux/isapnp.h>
	12	#include <linux/init.h>
	13	#include <linux/blkdev.h>
	14	#include <linux/delay.h>
	15	#include <scsi/scsi_host.h>
	16	#include <linux/ata.h>
	17	#include <linux/libata.h>
	18
	19	#define DRV_NAME "pata_isapnp"
c96f1732	20	#define DRV_VERSION "0.2.5"
669a5db4 JG	21
669a5db4 JG	22	static struct scsi_host_template isapnp_sht = {
68d1d07b	23	ATA_PIO_SHT(DRV_NAME),
669a5db4 JG	24	};
	25
	26	static struct ata_port_operations isapnp_port_ops = {
029cfd6b	27	.inherits = &ata_sff_port_ops,
a73984a0	28	.cable_detect = ata_cable_40wire,
669a5db4 JG	29	};
669a5db4 JG	30
c96f1732 AC	31	static struct ata_port_operations isapnp_noalt_port_ops = {
	32	.inherits = &ata_sff_port_ops,
	33	.cable_detect = ata_cable_40wire,
	34	/* No altstatus so we don't want to use the lost interrupt poll */
	35	.lost_interrupt = ATA_OP_NULL,
	36	};
	37
669a5db4 JG	38	/**
	39	* isapnp_init_one - attach an isapnp interface
	40	* @idev: PnP device
	41	* @dev_id: matching detect line
	42	*
	43	* Register an ISA bus IDE interface. Such interfaces are PIO 0 and
	44	* non shared IRQ.
	45	*/
	46
	47	static int isapnp_init_one(struct pnp_dev idev, const struct pnp_device_id dev_id)
	48	{
5d728824 TH	49	struct ata_host *host;
5d728824 TH	50	struct ata_port *ap;
0d5ff566	51	void __iomem cmd_addr, ctl_addr;
91e33d31 AC	52	int irq = 0;
91e33d31 AC	53	irq_handler_t handler = NULL;
669a5db4 JG	54
	55	if (pnp_port_valid(idev, 0) == 0)
	56	return -ENODEV;
	57
91e33d31 AC	58	if (pnp_irq_valid(idev, 0)) {
91e33d31 AC	59	irq = pnp_irq(idev, 0);
9363c382	60	handler = ata_sff_interrupt;
91e33d31	61	}
669a5db4	62
5d728824 TH	63	/* allocate host */
	64	host = ata_host_alloc(&idev->dev, 1);
	65	if (!host)
	66	return -ENOMEM;
	67
	68	/* acquire resources and fill host */
0d5ff566 TH	69	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	70	if (!cmd_addr)
	71	return -ENOMEM;
	72
5d728824 TH	73	ap = host->ports[0];
5d728824 TH	74
c96f1732	75	ap->ops = &isapnp_noalt_port_ops;
14bdef98	76	ap->pio_mask = ATA_PIO0;
5d728824 TH	77	ap->flags \|= ATA_FLAG_SLAVE_POSS;
	78
	79	ap->ioaddr.cmd_addr = cmd_addr;
669a5db4 JG	80
669a5db4 JG	81	if (pnp_port_valid(idev, 1) == 0) {
0d5ff566 TH	82	ctl_addr = devm_ioport_map(&idev->dev,
0d5ff566 TH	83	pnp_port_start(idev, 1), 1);
5d728824 TH	84	ap->ioaddr.altstatus_addr = ctl_addr;
5d728824 TH	85	ap->ioaddr.ctl_addr = ctl_addr;
c96f1732	86	ap->ops = &isapnp_port_ops;
669a5db4	87	}
669a5db4	88
9363c382	89	ata_sff_std_ports(&ap->ioaddr);
5d728824	90
cbcdd875 TH	91	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
	92	(unsigned long long)pnp_port_start(idev, 0),
	93	(unsigned long long)pnp_port_start(idev, 1));
	94
5d728824	95	/* activate */
91e33d31	96	return ata_host_activate(host, irq, handler, 0,
5d728824	97	&isapnp_sht);
669a5db4 JG	98	}
	99
	100	/**
	101	* isapnp_remove_one - unplug an isapnp interface
	102	* @idev: PnP device
	103	*
	104	* Remove a previously configured PnP ATA port. Called only on module
	105	* unload events as the core does not currently deal with ISAPnP docking.
	106	*/
	107
	108	static void isapnp_remove_one(struct pnp_dev *idev)
	109	{
	110	struct device *dev = &idev->dev;
	111	struct ata_host *host = dev_get_drvdata(dev);
	112
24dc5f33	113	ata_host_detach(host);
669a5db4 JG	114	}
	115
	116	static struct pnp_device_id isapnp_devices[] = {
	117	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	118	{.id = "PNP0600", .driver_data = 0},
	119	{.id = ""}
	120	};
	121
6a286a6d JG	122	MODULE_DEVICE_TABLE(pnp, isapnp_devices);
6a286a6d JG	123
669a5db4 JG	124	static struct pnp_driver isapnp_driver = {
	125	.name = DRV_NAME,
	126	.id_table = isapnp_devices,
	127	.probe = isapnp_init_one,
	128	.remove = isapnp_remove_one,
	129	};
	130
	131	static int __init isapnp_init(void)
	132	{
	133	return pnp_register_driver(&isapnp_driver);
	134	}
	135
	136	static void __exit isapnp_exit(void)
	137	{
	138	pnp_unregister_driver(&isapnp_driver);
	139	}
	140
	141	MODULE_AUTHOR("Alan Cox");
	142	MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
	143	MODULE_LICENSE("GPL");
	144	MODULE_VERSION(DRV_VERSION);
	145
	146	module_init(isapnp_init);
	147	module_exit(isapnp_exit);