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 :)) */
25 static const 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
31 static const struct ide_port_info ide_pnp_port_info = {
32 .host_flags = IDE_HFLAG_NO_DMA,
33 .chipset = ide_generic,
34 };
35
idepnp_probe(struct pnp_dev * dev,const struct pnp_device_id * dev_id)36 static 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;
75 out:
76 release_region(ctl, 1);
77 release_region(base, 8);
78
79 return rc;
80 }
81
idepnp_remove(struct pnp_dev * dev)82 static 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
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 module_pnp_driver(idepnp_driver);
100 MODULE_LICENSE("GPL");
101
