1/*
  2 * This file provides autodetection for ISA PnP IDE interfaces.
  3 * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
  4 *
  5 * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
  6 *
  7 * This program is free software; you can redistribute it and/or modify
  8 * it under the terms of the GNU General Public License as published by
  9 * the Free Software Foundation; either version 2, or (at your option)
 10 * any later version.
 11 *
 12 * You should have received a copy of the GNU General Public License
 13 * (for example /usr/src/linux/COPYING); if not, write to the Free
 14 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 15 */
 16
 17#include <linux/init.h>
 18#include <linux/pnp.h>
 19#include <linux/ide.h>
 20
 21#define DRV_NAME "ide-pnp"
 22
 23/* Add your devices here :)) */
 24static struct pnp_device_id idepnp_devices[] = {
 25	/* Generic ESDI/IDE/ATA compatible hard disk controller */
 26	{.id = "PNP0600", .driver_data = 0},
 27	{.id = ""}
 28};
 29
 30static const struct ide_port_info ide_pnp_port_info = {
 31	.host_flags		= IDE_HFLAG_NO_DMA,
 32	.chipset		= ide_generic,
 33};
 34
 35static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 36{
 37	struct ide_host *host;
 38	unsigned long base, ctl;
 39	int rc;
 40	struct ide_hw hw, *hws[] = { &hw };
 41
 42	printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
 43
 44	if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
 45		return -1;
 46
 47	base = pnp_port_start(dev, 0);
 48	ctl = pnp_port_start(dev, 1);
 49
 50	if (!request_region(base, 8, DRV_NAME)) {
 51		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
 52				DRV_NAME, base, base + 7);
 53		return -EBUSY;
 54	}
 55
 56	if (!request_region(ctl, 1, DRV_NAME)) {
 57		printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
 58				DRV_NAME, ctl);
 59		release_region(base, 8);
 60		return -EBUSY;
 61	}
 62
 63	memset(&hw, 0, sizeof(hw));
 64	ide_std_init_ports(&hw, base, ctl);
 65	hw.irq = pnp_irq(dev, 0);
 66
 67	rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
 68	if (rc)
 69		goto out;
 70
 71	pnp_set_drvdata(dev, host);
 72
 73	return 0;
 74out:
 75	release_region(ctl, 1);
 76	release_region(base, 8);
 77
 78	return rc;
 79}
 80
 81static void idepnp_remove(struct pnp_dev *dev)
 82{
 83	struct ide_host *host = pnp_get_drvdata(dev);
 84
 85	ide_host_remove(host);
 86
 87	release_region(pnp_port_start(dev, 1), 1);
 88	release_region(pnp_port_start(dev, 0), 8);
 89}
 90
 91static struct pnp_driver idepnp_driver = {
 92	.name		= "ide",
 93	.id_table	= idepnp_devices,
 94	.probe		= idepnp_probe,
 95	.remove		= idepnp_remove,
 96};
 97
 98static int __init pnpide_init(void)
 99{
100	return pnp_register_driver(&idepnp_driver);
101}
102
103static void __exit pnpide_exit(void)
104{
105	pnp_unregister_driver(&idepnp_driver);
106}
107
108module_init(pnpide_init);
109module_exit(pnpide_exit);
110
111MODULE_LICENSE("GPL");