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
idepnp_probe(struct pnp_dev * dev,const struct pnp_device_id * dev_id)30 static 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;
70 out:
71 release_region(ctl, 1);
72 release_region(base, 8);
73
74 return rc;
75 }
76
idepnp_remove(struct pnp_dev * dev)77 static 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
87 static struct pnp_driver idepnp_driver = {
88 .name = "ide",
89 .id_table = idepnp_devices,
90 .probe = idepnp_probe,
91 .remove = idepnp_remove,
92 };
93
pnpide_init(void)94 static int __init pnpide_init(void)
95 {
96 return pnp_register_driver(&idepnp_driver);
97 }
98
pnpide_exit(void)99 static void __exit pnpide_exit(void)
100 {
101 pnp_unregister_driver(&idepnp_driver);
102 }
103
104 module_init(pnpide_init);
105 module_exit(pnpide_exit);
106
107 MODULE_LICENSE("GPL");
108