Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-fixes-2.6
[linux-2.6] / drivers / ide / ide-pnp.c
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 :)) */
24 static 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
30 static 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         unsigned long base, ctl;
35
36         printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
37
38         if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
39                 return -1;
40
41         base = pnp_port_start(dev, 0);
42         ctl = pnp_port_start(dev, 1);
43
44         if (!request_region(base, 8, DRV_NAME)) {
45                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
46                                 DRV_NAME, base, base + 7);
47                 return -EBUSY;
48         }
49
50         if (!request_region(ctl, 1, DRV_NAME)) {
51                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
52                                 DRV_NAME, ctl);
53                 release_region(base, 8);
54                 return -EBUSY;
55         }
56
57         memset(&hw, 0, sizeof(hw));
58         ide_std_init_ports(&hw, base, ctl);
59         hw.irq = pnp_irq(dev, 0);
60         hw.chipset = ide_generic;
61
62         hwif = ide_find_port();
63         if (hwif) {
64                 u8 index = hwif->index;
65                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
66
67                 ide_init_port_hw(hwif, &hw);
68
69                 pnp_set_drvdata(dev, hwif);
70
71                 ide_device_add(idx, NULL);
72
73                 return 0;
74         }
75
76         release_region(ctl, 1);
77         release_region(base, 8);
78
79         return -1;
80 }
81
82 static void idepnp_remove(struct pnp_dev *dev)
83 {
84         ide_hwif_t *hwif = pnp_get_drvdata(dev);
85
86         ide_unregister(hwif);
87
88         release_region(pnp_port_start(dev, 1), 1);
89         release_region(pnp_port_start(dev, 0), 8);
90 }
91
92 static struct pnp_driver idepnp_driver = {
93         .name           = "ide",
94         .id_table       = idepnp_devices,
95         .probe          = idepnp_probe,
96         .remove         = idepnp_remove,
97 };
98
99 static int __init pnpide_init(void)
100 {
101         return pnp_register_driver(&idepnp_driver);
102 }
103
104 static void __exit pnpide_exit(void)
105 {
106         pnp_unregister_driver(&idepnp_driver);
107 }
108
109 module_init(pnpide_init);
110 module_exit(pnpide_exit);
111
112 MODULE_LICENSE("GPL");