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