1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * This file provides autodetection for ISA PnP IDE interfaces.
4 * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
5 *
6 * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
7 */
8
9 #include <linux/init.h>
10 #include <linux/pnp.h>
11 #include <linux/ide.h>
12 #include <linux/module.h>
13
14 #define DRV_NAME "ide-pnp"
15
16 /* Add your devices here :)) */
17 static const struct pnp_device_id idepnp_devices[] = {
18 /* Generic ESDI/IDE/ATA compatible hard disk controller */
19 {.id = "PNP0600", .driver_data = 0},
20 {.id = ""}
21 };
22
23 static const struct ide_port_info ide_pnp_port_info = {
24 .host_flags = IDE_HFLAG_NO_DMA,
25 .chipset = ide_generic,
26 };
27
idepnp_probe(struct pnp_dev * dev,const struct pnp_device_id * dev_id)28 static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
29 {
30 struct ide_host *host;
31 unsigned long base, ctl;
32 int rc;
33 struct ide_hw hw, *hws[] = { &hw };
34
35 printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
36
37 if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
38 return -1;
39
40 base = pnp_port_start(dev, 0);
41 ctl = pnp_port_start(dev, 1);
42
43 if (!request_region(base, 8, DRV_NAME)) {
44 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
45 DRV_NAME, base, base + 7);
46 return -EBUSY;
47 }
48
49 if (!request_region(ctl, 1, DRV_NAME)) {
50 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
51 DRV_NAME, ctl);
52 release_region(base, 8);
53 return -EBUSY;
54 }
55
56 memset(&hw, 0, sizeof(hw));
57 ide_std_init_ports(&hw, base, ctl);
58 hw.irq = pnp_irq(dev, 0);
59
60 rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
61 if (rc)
62 goto out;
63
64 pnp_set_drvdata(dev, host);
65
66 return 0;
67 out:
68 release_region(ctl, 1);
69 release_region(base, 8);
70
71 return rc;
72 }
73
idepnp_remove(struct pnp_dev * dev)74 static void idepnp_remove(struct pnp_dev *dev)
75 {
76 struct ide_host *host = pnp_get_drvdata(dev);
77
78 ide_host_remove(host);
79
80 release_region(pnp_port_start(dev, 1), 1);
81 release_region(pnp_port_start(dev, 0), 8);
82 }
83
84 static struct pnp_driver idepnp_driver = {
85 .name = "ide",
86 .id_table = idepnp_devices,
87 .probe = idepnp_probe,
88 .remove = idepnp_remove,
89 };
90
91 module_pnp_driver(idepnp_driver);
92 MODULE_LICENSE("GPL");
93