Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * generic/default IDE host driver | |
3 | * | |
f0298512 | 4 | * Copyright (C) 2004, 2008 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
5 | * This code was split off from ide.c. See it for original copyrights. |
6 | * | |
7 | * May be copied or modified under the terms of the GNU General Public License. | |
8 | */ | |
9 | ||
f0298512 BZ |
10 | /* |
11 | * For special cases new interfaces may be added using sysfs, i.e. | |
12 | * | |
13 | * echo -n "0x168:0x36e:10" > /sys/class/ide_generic/add | |
14 | * | |
15 | * will add an interface using I/O ports 0x168-0x16f/0x36e and IRQ 10. | |
16 | */ | |
17 | ||
1da177e4 LT |
18 | #include <linux/kernel.h> |
19 | #include <linux/init.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/ide.h> | |
22 | ||
f0298512 BZ |
23 | #define DRV_NAME "ide_generic" |
24 | ||
25 | static ssize_t store_add(struct class *cls, const char *buf, size_t n) | |
26 | { | |
27 | ide_hwif_t *hwif; | |
28 | unsigned int base, ctl; | |
29 | int irq; | |
30 | hw_regs_t hw; | |
31 | u8 idx[] = { 0xff, 0xff, 0xff, 0xff }; | |
32 | ||
33 | if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3) | |
34 | return -EINVAL; | |
35 | ||
36 | hwif = ide_find_port(base); | |
37 | if (hwif == NULL) | |
38 | return -ENOENT; | |
39 | ||
40 | memset(&hw, 0, sizeof(hw)); | |
41 | ide_std_init_ports(&hw, base, ctl); | |
42 | hw.irq = irq; | |
43 | hw.chipset = ide_generic; | |
44 | ||
45 | ide_init_port_hw(hwif, &hw); | |
46 | ||
47 | idx[0] = hwif->index; | |
48 | ||
49 | ide_device_add(idx, NULL); | |
50 | ||
51 | return n; | |
52 | }; | |
53 | ||
54 | static struct class_attribute ide_generic_class_attrs[] = { | |
55 | __ATTR(add, S_IWUSR, NULL, store_add), | |
56 | __ATTR_NULL | |
57 | }; | |
58 | ||
59 | static void ide_generic_class_release(struct class *cls) | |
60 | { | |
61 | kfree(cls); | |
62 | } | |
63 | ||
64 | static int __init ide_generic_sysfs_init(void) | |
65 | { | |
66 | struct class *cls; | |
67 | int rc; | |
68 | ||
69 | cls = kzalloc(sizeof(*cls), GFP_KERNEL); | |
70 | if (!cls) | |
71 | return -ENOMEM; | |
72 | ||
73 | cls->name = DRV_NAME; | |
74 | cls->owner = THIS_MODULE; | |
75 | cls->class_release = ide_generic_class_release; | |
76 | cls->class_attrs = ide_generic_class_attrs; | |
77 | ||
78 | rc = class_register(cls); | |
79 | if (rc) { | |
80 | kfree(cls); | |
81 | return rc; | |
82 | } | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
1da177e4 LT |
87 | static int __init ide_generic_init(void) |
88 | { | |
151575e4 BZ |
89 | u8 idx[MAX_HWIFS]; |
90 | int i; | |
91 | ||
b2a53bc6 BZ |
92 | for (i = 0; i < MAX_HWIFS; i++) { |
93 | ide_hwif_t *hwif = &ide_hwifs[i]; | |
486c92e2 BZ |
94 | unsigned long io_addr = ide_default_io_base(i); |
95 | hw_regs_t hw; | |
96 | ||
97 | if (hwif->chipset == ide_unknown && io_addr) { | |
98 | memset(&hw, 0, sizeof(hw)); | |
99 | ide_std_init_ports(&hw, io_addr, io_addr + 0x206); | |
273b8385 | 100 | hw.irq = ide_default_irq(io_addr); |
486c92e2 | 101 | ide_init_port_hw(hwif, &hw); |
b2a53bc6 | 102 | |
b2a53bc6 | 103 | idx[i] = i; |
486c92e2 | 104 | } else |
b2a53bc6 BZ |
105 | idx[i] = 0xff; |
106 | } | |
151575e4 | 107 | |
c413b9b9 | 108 | ide_device_add_all(idx, NULL); |
1da177e4 | 109 | |
f0298512 BZ |
110 | if (ide_generic_sysfs_init()) |
111 | printk(KERN_ERR DRV_NAME ": failed to create ide_generic " | |
112 | "class\n"); | |
113 | ||
1da177e4 LT |
114 | return 0; |
115 | } | |
116 | ||
117 | module_init(ide_generic_init); | |
118 | ||
119 | MODULE_LICENSE("GPL"); |