diff options
Diffstat (limited to 'drivers/ide/ide-generic.c')
-rw-r--r-- | drivers/ide/ide-generic.c | 78 |
1 files changed, 77 insertions, 1 deletions
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c index c1d8d71f8791..387574fe4b2b 100644 --- a/drivers/ide/ide-generic.c +++ b/drivers/ide/ide-generic.c | |||
@@ -1,17 +1,89 @@ | |||
1 | /* | 1 | /* |
2 | * generic/default IDE host driver | 2 | * generic/default IDE host driver |
3 | * | 3 | * |
4 | * Copyright (C) 2004 Bartlomiej Zolnierkiewicz | 4 | * Copyright (C) 2004, 2008 Bartlomiej Zolnierkiewicz |
5 | * This code was split off from ide.c. See it for original copyrights. | 5 | * This code was split off from ide.c. See it for original copyrights. |
6 | * | 6 | * |
7 | * May be copied or modified under the terms of the GNU General Public License. | 7 | * May be copied or modified under the terms of the GNU General Public License. |
8 | */ | 8 | */ |
9 | 9 | ||
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 | |||
10 | #include <linux/kernel.h> | 18 | #include <linux/kernel.h> |
11 | #include <linux/init.h> | 19 | #include <linux/init.h> |
12 | #include <linux/module.h> | 20 | #include <linux/module.h> |
13 | #include <linux/ide.h> | 21 | #include <linux/ide.h> |
14 | 22 | ||
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 | |||
15 | static int __init ide_generic_init(void) | 87 | static int __init ide_generic_init(void) |
16 | { | 88 | { |
17 | u8 idx[MAX_HWIFS]; | 89 | u8 idx[MAX_HWIFS]; |
@@ -30,6 +102,10 @@ static int __init ide_generic_init(void) | |||
30 | 102 | ||
31 | ide_device_add_all(idx, NULL); | 103 | ide_device_add_all(idx, NULL); |
32 | 104 | ||
105 | if (ide_generic_sysfs_init()) | ||
106 | printk(KERN_ERR DRV_NAME ": failed to create ide_generic " | ||
107 | "class\n"); | ||
108 | |||
33 | return 0; | 109 | return 0; |
34 | } | 110 | } |
35 | 111 | ||