tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 :)) */
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 unsigned long base, ctl;
35
36 if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
37 return -1;
38
39 base = pnp_port_start(dev, 0);
40 ctl = pnp_port_start(dev, 1);
41
42 if (!request_region(base, 8, DRV_NAME)) {
43 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
44 DRV_NAME, base, base + 7);
45 return -EBUSY;
46 }
47
48 if (!request_region(ctl, 1, DRV_NAME)) {
49 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
50 DRV_NAME, ctl);
51 release_region(base, 8);
52 return -EBUSY;
53 }
54
55 memset(&hw, 0, sizeof(hw));
56 ide_std_init_ports(&hw, base, ctl);
57 hw.irq = pnp_irq(dev, 0);
58 hw.chipset = ide_generic;
59
60 hwif = ide_find_port();
61 if (hwif) {
62 u8 index = hwif->index;
63 u8 idx[4] = { index, 0xff, 0xff, 0xff };
64
65 ide_init_port_data(hwif, index);
66 ide_init_port_hw(hwif, &hw);
67
68 printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
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
82static 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
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");