1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/kernel.h>
3 #include <linux/export.h>
4 #include <linux/ide.h>
5
ide_legacy_init_one(struct ide_hw ** hws,struct ide_hw * hw,u8 port_no,const struct ide_port_info * d,unsigned long config)6 static 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
ide_legacy_device_add(const struct ide_port_info * d,unsigned long config)43 int 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 }
59 EXPORT_SYMBOL_GPL(ide_legacy_device_add);
60