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Merge tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoor...
[mirror_ubuntu-hirsute-kernel.git] / drivers / ide / ide-pnp.c
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af1a8899 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 2/*
1da177e4
LT
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>
1da177e4
LT
7 */
8
9#include <linux/init.h>
10#include <linux/pnp.h>
11#include <linux/ide.h>
bff7832d 12#include <linux/module.h>
1da177e4 13
134d4548
BZ
14#define DRV_NAME "ide-pnp"
15
1da177e4 16/* Add your devices here :)) */
b671e170 17static const struct pnp_device_id idepnp_devices[] = {
177b8fe9 18 /* Generic ESDI/IDE/ATA compatible hard disk controller */
1da177e4
LT
19 {.id = "PNP0600", .driver_data = 0},
20 {.id = ""}
21};
22
ee1464a4
BZ
23static const struct ide_port_info ide_pnp_port_info = {
24 .host_flags = IDE_HFLAG_NO_DMA,
29e52cf7 25 .chipset = ide_generic,
ee1464a4
BZ
26};
27
177b8fe9 28static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
1da177e4 29{
48c3c107 30 struct ide_host *host;
134d4548 31 unsigned long base, ctl;
6f904d01 32 int rc;
9f36d314 33 struct ide_hw hw, *hws[] = { &hw };
1da177e4 34
e193c3e1
BZ
35 printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
36
1da177e4
LT
37 if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
38 return -1;
39
134d4548
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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
1da177e4 56 memset(&hw, 0, sizeof(hw));
134d4548 57 ide_std_init_ports(&hw, base, ctl);
1da177e4 58 hw.irq = pnp_irq(dev, 0);
1da177e4 59
dca39830 60 rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
6f904d01
BZ
61 if (rc)
62 goto out;
cbb010c1 63
6f904d01 64 pnp_set_drvdata(dev, host);
1da177e4 65
6f904d01
BZ
66 return 0;
67out:
134d4548
BZ
68 release_region(ctl, 1);
69 release_region(base, 8);
70
6f904d01 71 return rc;
1da177e4
LT
72}
73
177b8fe9 74static void idepnp_remove(struct pnp_dev *dev)
1da177e4 75{
48c3c107 76 struct ide_host *host = pnp_get_drvdata(dev);
f82c2b17 77
48c3c107 78 ide_host_remove(host);
134d4548
BZ
79
80 release_region(pnp_port_start(dev, 1), 1);
81 release_region(pnp_port_start(dev, 0), 8);
1da177e4
LT
82}
83
84static struct pnp_driver idepnp_driver = {
85 .name = "ide",
86 .id_table = idepnp_devices,
87 .probe = idepnp_probe,
88 .remove = idepnp_remove,
89};
90
6a533309 91module_pnp_driver(idepnp_driver);
a62ee641 92MODULE_LICENSE("GPL");