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

// SPDX-License-Identifier: GPL-2.0-only

/*
 *   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 <pazke@donpac.ru>
 */

#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 const 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)) {
		ctl_addr = devm_ioport_map(&idev->dev,
					   pnp_port_start(idev, 1), 1);
		if (!ctl_addr)
			return -ENOMEM;

		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,
};

module_pnp_driver(isapnp_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
669a5db4 JG	2
	3	/*
	4	* pata-isapnp.c - ISA PnP PATA controller driver.
ab771630	5	* Copyright 2005/2006 Red Hat Inc, all rights reserved.
669a5db4 JG	6	*
	7	* Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/module.h>
	12	#include <linux/isapnp.h>
	13	#include <linux/init.h>
	14	#include <linux/blkdev.h>
	15	#include <linux/delay.h>
	16	#include <scsi/scsi_host.h>
	17	#include <linux/ata.h>
	18	#include <linux/libata.h>
	19
	20	#define DRV_NAME "pata_isapnp"
c96f1732	21	#define DRV_VERSION "0.2.5"
669a5db4	22
25df73d9	23	static const struct scsi_host_template isapnp_sht = {
68d1d07b	24	ATA_PIO_SHT(DRV_NAME),
669a5db4 JG	25	};
	26
	27	static struct ata_port_operations isapnp_port_ops = {
029cfd6b	28	.inherits = &ata_sff_port_ops,
a73984a0	29	.cable_detect = ata_cable_40wire,
669a5db4 JG	30	};
669a5db4 JG	31
c96f1732 AC	32	static struct ata_port_operations isapnp_noalt_port_ops = {
	33	.inherits = &ata_sff_port_ops,
	34	.cable_detect = ata_cable_40wire,
	35	/* No altstatus so we don't want to use the lost interrupt poll */
	36	.lost_interrupt = ATA_OP_NULL,
	37	};
	38
669a5db4 JG	39	/**
	40	* isapnp_init_one - attach an isapnp interface
	41	* @idev: PnP device
	42	* @dev_id: matching detect line
	43	*
	44	* Register an ISA bus IDE interface. Such interfaces are PIO 0 and
	45	* non shared IRQ.
	46	*/
	47
	48	static int isapnp_init_one(struct pnp_dev idev, const struct pnp_device_id dev_id)
	49	{
5d728824 TH	50	struct ata_host *host;
5d728824 TH	51	struct ata_port *ap;
0d5ff566	52	void __iomem cmd_addr, ctl_addr;
91e33d31 AC	53	int irq = 0;
91e33d31 AC	54	irq_handler_t handler = NULL;
669a5db4 JG	55
	56	if (pnp_port_valid(idev, 0) == 0)
	57	return -ENODEV;
	58
91e33d31 AC	59	if (pnp_irq_valid(idev, 0)) {
91e33d31 AC	60	irq = pnp_irq(idev, 0);
9363c382	61	handler = ata_sff_interrupt;
91e33d31	62	}
669a5db4	63
5d728824 TH	64	/* allocate host */
	65	host = ata_host_alloc(&idev->dev, 1);
	66	if (!host)
	67	return -ENOMEM;
	68
	69	/* acquire resources and fill host */
0d5ff566 TH	70	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	71	if (!cmd_addr)
	72	return -ENOMEM;
	73
5d728824 TH	74	ap = host->ports[0];
5d728824 TH	75
c96f1732	76	ap->ops = &isapnp_noalt_port_ops;
14bdef98	77	ap->pio_mask = ATA_PIO0;
5d728824 TH	78	ap->flags \|= ATA_FLAG_SLAVE_POSS;
	79
	80	ap->ioaddr.cmd_addr = cmd_addr;
669a5db4	81
fc0012ec	82	if (pnp_port_valid(idev, 1)) {
0d5ff566 TH	83	ctl_addr = devm_ioport_map(&idev->dev,
0d5ff566 TH	84	pnp_port_start(idev, 1), 1);
a6925165 CN	85	if (!ctl_addr)
	86	return -ENOMEM;
	87
5d728824 TH	88	ap->ioaddr.altstatus_addr = ctl_addr;
5d728824 TH	89	ap->ioaddr.ctl_addr = ctl_addr;
c96f1732	90	ap->ops = &isapnp_port_ops;
669a5db4	91	}
669a5db4	92
9363c382	93	ata_sff_std_ports(&ap->ioaddr);
5d728824	94
cbcdd875 TH	95	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
	96	(unsigned long long)pnp_port_start(idev, 0),
	97	(unsigned long long)pnp_port_start(idev, 1));
	98
5d728824	99	/* activate */
91e33d31	100	return ata_host_activate(host, irq, handler, 0,
5d728824	101	&isapnp_sht);
669a5db4 JG	102	}
	103
	104	/**
	105	* isapnp_remove_one - unplug an isapnp interface
	106	* @idev: PnP device
	107	*
	108	* Remove a previously configured PnP ATA port. Called only on module
	109	* unload events as the core does not currently deal with ISAPnP docking.
	110	*/
	111
	112	static void isapnp_remove_one(struct pnp_dev *idev)
	113	{
	114	struct device *dev = &idev->dev;
	115	struct ata_host *host = dev_get_drvdata(dev);
	116
24dc5f33	117	ata_host_detach(host);
669a5db4 JG	118	}
	119
	120	static struct pnp_device_id isapnp_devices[] = {
	121	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	122	{.id = "PNP0600", .driver_data = 0},
	123	{.id = ""}
	124	};
	125
6a286a6d JG	126	MODULE_DEVICE_TABLE(pnp, isapnp_devices);
6a286a6d JG	127
669a5db4 JG	128	static struct pnp_driver isapnp_driver = {
	129	.name = DRV_NAME,
	130	.id_table = isapnp_devices,
	131	.probe = isapnp_init_one,
	132	.remove = isapnp_remove_one,
	133	};
	134
99c876be	135	module_pnp_driver(isapnp_driver);
669a5db4 JG	136	MODULE_AUTHOR("Alan Cox");
	137	MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
	138	MODULE_LICENSE("GPL");
	139	MODULE_VERSION(DRV_VERSION);