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


/*
 *   pata-isapnp.c - ISA PnP PATA controller driver.
 *   Copyright 2005/2006 Red Hat Inc <[email protected]>, 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 "0.2.2"

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,
};

/**
 *	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_port_ops;
	ap->pio_mask = 1;
	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;
	}

	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.
	4	* Copyright 2005/2006 Red Hat Inc <[email protected]>, all rights reserved.
	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"
2a3103ce	20	#define DRV_VERSION "0.2.2"
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	};
	30
	31	/**
	32	* isapnp_init_one - attach an isapnp interface
	33	* @idev: PnP device
	34	* @dev_id: matching detect line
	35	*
	36	* Register an ISA bus IDE interface. Such interfaces are PIO 0 and
	37	* non shared IRQ.
	38	*/
	39
	40	static int isapnp_init_one(struct pnp_dev idev, const struct pnp_device_id dev_id)
	41	{
5d728824 TH	42	struct ata_host *host;
5d728824 TH	43	struct ata_port *ap;
0d5ff566	44	void __iomem cmd_addr, ctl_addr;
91e33d31 AC	45	int irq = 0;
91e33d31 AC	46	irq_handler_t handler = NULL;
669a5db4 JG	47
	48	if (pnp_port_valid(idev, 0) == 0)
	49	return -ENODEV;
	50
91e33d31 AC	51	if (pnp_irq_valid(idev, 0)) {
91e33d31 AC	52	irq = pnp_irq(idev, 0);
9363c382	53	handler = ata_sff_interrupt;
91e33d31	54	}
669a5db4	55
5d728824 TH	56	/* allocate host */
	57	host = ata_host_alloc(&idev->dev, 1);
	58	if (!host)
	59	return -ENOMEM;
	60
	61	/* acquire resources and fill host */
0d5ff566 TH	62	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	63	if (!cmd_addr)
	64	return -ENOMEM;
	65
5d728824 TH	66	ap = host->ports[0];
	67
	68	ap->ops = &isapnp_port_ops;
	69	ap->pio_mask = 1;
	70	ap->flags \|= ATA_FLAG_SLAVE_POSS;
	71
	72	ap->ioaddr.cmd_addr = cmd_addr;
669a5db4 JG	73
669a5db4 JG	74	if (pnp_port_valid(idev, 1) == 0) {
0d5ff566 TH	75	ctl_addr = devm_ioport_map(&idev->dev,
0d5ff566 TH	76	pnp_port_start(idev, 1), 1);
5d728824 TH	77	ap->ioaddr.altstatus_addr = ctl_addr;
5d728824 TH	78	ap->ioaddr.ctl_addr = ctl_addr;
669a5db4	79	}
669a5db4	80
9363c382	81	ata_sff_std_ports(&ap->ioaddr);
5d728824	82
cbcdd875 TH	83	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
	84	(unsigned long long)pnp_port_start(idev, 0),
	85	(unsigned long long)pnp_port_start(idev, 1));
	86
5d728824	87	/* activate */
91e33d31	88	return ata_host_activate(host, irq, handler, 0,
5d728824	89	&isapnp_sht);
669a5db4 JG	90	}
	91
	92	/**
	93	* isapnp_remove_one - unplug an isapnp interface
	94	* @idev: PnP device
	95	*
	96	* Remove a previously configured PnP ATA port. Called only on module
	97	* unload events as the core does not currently deal with ISAPnP docking.
	98	*/
	99
	100	static void isapnp_remove_one(struct pnp_dev *idev)
	101	{
	102	struct device *dev = &idev->dev;
	103	struct ata_host *host = dev_get_drvdata(dev);
	104
24dc5f33	105	ata_host_detach(host);
669a5db4 JG	106	}
	107
	108	static struct pnp_device_id isapnp_devices[] = {
	109	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	110	{.id = "PNP0600", .driver_data = 0},
	111	{.id = ""}
	112	};
	113
6a286a6d JG	114	MODULE_DEVICE_TABLE(pnp, isapnp_devices);
6a286a6d JG	115
669a5db4 JG	116	static struct pnp_driver isapnp_driver = {
	117	.name = DRV_NAME,
	118	.id_table = isapnp_devices,
	119	.probe = isapnp_init_one,
	120	.remove = isapnp_remove_one,
	121	};
	122
	123	static int __init isapnp_init(void)
	124	{
	125	return pnp_register_driver(&isapnp_driver);
	126	}
	127
	128	static void __exit isapnp_exit(void)
	129	{
	130	pnp_unregister_driver(&isapnp_driver);
	131	}
	132
	133	MODULE_AUTHOR("Alan Cox");
	134	MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
	135	MODULE_LICENSE("GPL");
	136	MODULE_VERSION(DRV_VERSION);
	137
	138	module_init(isapnp_init);
	139	module_exit(isapnp_exit);