ide-pnp.c revision 6f904d015262dfa43eb1cecc00b0998b4c3543f2 
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 int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
31{
32	struct ide_host *host;
33	unsigned long base, ctl;
34	int rc;
35	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
36
37	printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
38
39	if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
40		return -1;
41
42	base = pnp_port_start(dev, 0);
43	ctl = pnp_port_start(dev, 1);
44
45	if (!request_region(base, 8, DRV_NAME)) {
46		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
47				DRV_NAME, base, base + 7);
48		return -EBUSY;
49	}
50
51	if (!request_region(ctl, 1, DRV_NAME)) {
52		printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
53				DRV_NAME, ctl);
54		release_region(base, 8);
55		return -EBUSY;
56	}
57
58	memset(&hw, 0, sizeof(hw));
59	ide_std_init_ports(&hw, base, ctl);
60	hw.irq = pnp_irq(dev, 0);
61	hw.chipset = ide_generic;
62
63	rc = ide_host_add(NULL, hws, &host);
64	if (rc)
65		goto out;
66
67	pnp_set_drvdata(dev, host);
68
69	return 0;
70out:
71	release_region(ctl, 1);
72	release_region(base, 8);
73
74	return rc;
75}
76
77static void idepnp_remove(struct pnp_dev *dev)
78{
79	struct ide_host *host = pnp_get_drvdata(dev);
80
81	ide_host_remove(host);
82
83	release_region(pnp_port_start(dev, 1), 1);
84	release_region(pnp_port_start(dev, 0), 8);
85}
86
87static struct pnp_driver idepnp_driver = {
88	.name		= "ide",
89	.id_table	= idepnp_devices,
90	.probe		= idepnp_probe,
91	.remove		= idepnp_remove,
92};
93
94static int __init pnpide_init(void)
95{
96	return pnp_register_driver(&idepnp_driver);
97}
98
99static void __exit pnpide_exit(void)
100{
101	pnp_unregister_driver(&idepnp_driver);
102}
103
104module_init(pnpide_init);
105module_exit(pnpide_exit);
106
107MODULE_LICENSE("GPL");
108