ide-pnp.c revision 869c56ee9de1b72cd3f8ab9cdfbd3601e55c61f2 
1/*
2 * linux/drivers/ide/ide-pnp.c
3 *
4 * This file provides autodetection for ISA PnP IDE interfaces.
5 * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
6 *
7 * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 *
14 * You should have received a copy of the GNU General Public License
15 * (for example /usr/src/linux/COPYING); if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19#include <linux/init.h>
20#include <linux/pnp.h>
21#include <linux/ide.h>
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	hw_regs_t hw;
33	ide_hwif_t *hwif;
34	int index;
35
36	if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
37		return -1;
38
39	memset(&hw, 0, sizeof(hw));
40	ide_std_init_ports(&hw, pnp_port_start(dev, 0),
41				pnp_port_start(dev, 1));
42	hw.irq = pnp_irq(dev, 0);
43	hw.dma = NO_DMA;
44
45	index = ide_register_hw(&hw, 1, &hwif);
46
47	if (index != -1) {
48	    	printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
49		pnp_set_drvdata(dev,hwif);
50		return 0;
51	}
52
53	return -1;
54}
55
56static void idepnp_remove(struct pnp_dev * dev)
57{
58	ide_hwif_t *hwif = pnp_get_drvdata(dev);
59	if (hwif) {
60		ide_unregister(hwif->index);
61	} else
62		printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
63}
64
65static struct pnp_driver idepnp_driver = {
66	.name		= "ide",
67	.id_table	= idepnp_devices,
68	.probe		= idepnp_probe,
69	.remove		= idepnp_remove,
70};
71
72void __init pnpide_init(void)
73{
74	pnp_register_driver(&idepnp_driver);
75}
76
77void __exit pnpide_exit(void)
78{
79	pnp_unregister_driver(&idepnp_driver);
80}
81