1// SPDX-License-Identifier: GPL-2.0-only
 2#include <linux/kernel.h>
 3#include <linux/export.h>
 4#include <linux/ide.h>
 5
 6static void ide_legacy_init_one(struct ide_hw **hws, struct ide_hw *hw,
 7				u8 port_no, const struct ide_port_info *d,
 8				unsigned long config)
 9{
10	unsigned long base, ctl;
11	int irq;
12
13	if (port_no == 0) {
14		base = 0x1f0;
15		ctl  = 0x3f6;
16		irq  = 14;
17	} else {
18		base = 0x170;
19		ctl  = 0x376;
20		irq  = 15;
21	}
22
23	if (!request_region(base, 8, d->name)) {
24		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
25				d->name, base, base + 7);
26		return;
27	}
28
29	if (!request_region(ctl, 1, d->name)) {
30		printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
31				d->name, ctl);
32		release_region(base, 8);
33		return;
34	}
35
36	ide_std_init_ports(hw, base, ctl);
37	hw->irq = irq;
38	hw->config = config;
39
40	hws[port_no] = hw;
41}
42
43int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
44{
45	struct ide_hw hw[2], *hws[] = { NULL, NULL };
46
47	memset(&hw, 0, sizeof(hw));
48
49	if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
50		ide_legacy_init_one(hws, &hw[0], 0, d, config);
51	ide_legacy_init_one(hws, &hw[1], 1, d, config);
52
53	if (hws[0] == NULL && hws[1] == NULL &&
54	    (d->host_flags & IDE_HFLAG_SINGLE))
55		return -ENOENT;
56
57	return ide_host_add(d, hws, 2, NULL);
58}
59EXPORT_SYMBOL_GPL(ide_legacy_device_add);