[go: nahoru, domu]
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#include <linux/module.h>
21
22#define DRV_NAME "ide-pnp"
23
24/* Add your devices here :)) */
25static struct pnp_device_id idepnp_devices[] = {
26	/* Generic ESDI/IDE/ATA compatible hard disk controller */
27	{.id = "PNP0600", .driver_data = 0},
28	{.id = ""}
29};
30
31static const struct ide_port_info ide_pnp_port_info = {
32	.host_flags		= IDE_HFLAG_NO_DMA,
33	.chipset		= ide_generic,
34};
35
36static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
37{
38	struct ide_host *host;
39	unsigned long base, ctl;
40	int rc;
41	struct ide_hw hw, *hws[] = { &hw };
42
43	printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
44
45	if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
46		return -1;
47
48	base = pnp_port_start(dev, 0);
49	ctl = pnp_port_start(dev, 1);
50
51	if (!request_region(base, 8, DRV_NAME)) {
52		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
53				DRV_NAME, base, base + 7);
54		return -EBUSY;
55	}
56
57	if (!request_region(ctl, 1, DRV_NAME)) {
58		printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
59				DRV_NAME, ctl);
60		release_region(base, 8);
61		return -EBUSY;
62	}
63
64	memset(&hw, 0, sizeof(hw));
65	ide_std_init_ports(&hw, base, ctl);
66	hw.irq = pnp_irq(dev, 0);
67
68	rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
69	if (rc)
70		goto out;
71
72	pnp_set_drvdata(dev, host);
73
74	return 0;
75out:
76	release_region(ctl, 1);
77	release_region(base, 8);
78
79	return rc;
80}
81
82static void idepnp_remove(struct pnp_dev *dev)
83{
84	struct ide_host *host = pnp_get_drvdata(dev);
85
86	ide_host_remove(host);
87
88	release_region(pnp_port_start(dev, 1), 1);
89	release_region(pnp_port_start(dev, 0), 8);
90}
91
92static struct pnp_driver idepnp_driver = {
93	.name		= "ide",
94	.id_table	= idepnp_devices,
95	.probe		= idepnp_probe,
96	.remove		= idepnp_remove,
97};
98
99static int __init pnpide_init(void)
100{
101	return pnp_register_driver(&idepnp_driver);
102}
103
104static void __exit pnpide_exit(void)
105{
106	pnp_unregister_driver(&idepnp_driver);
107}
108
109module_init(pnpide_init);
110module_exit(pnpide_exit);
111
112MODULE_LICENSE("GPL");
113