2 * generic/default IDE host driver
4 * Copyright (C) 2004, 2008 Bartlomiej Zolnierkiewicz
5 * This code was split off from ide.c. See it for original copyrights.
7 * May be copied or modified under the terms of the GNU General Public License.
11 * For special cases new interfaces may be added using sysfs, i.e.
13 * echo -n "0x168:0x36e:10" > /sys/class/ide_generic/add
15 * will add an interface using I/O ports 0x168-0x16f/0x36e and IRQ 10.
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/ide.h>
23 #define DRV_NAME "ide_generic"
25 static ssize_t
store_add(struct class *cls
, const char *buf
, size_t n
)
28 unsigned int base
, ctl
;
31 u8 idx
[] = { 0xff, 0xff, 0xff, 0xff };
33 if (sscanf(buf
, "%x:%x:%d", &base
, &ctl
, &irq
) != 3)
36 hwif
= ide_find_port();
40 memset(&hw
, 0, sizeof(hw
));
41 ide_std_init_ports(&hw
, base
, ctl
);
43 hw
.chipset
= ide_generic
;
45 ide_init_port_hw(hwif
, &hw
);
49 ide_device_add(idx
, NULL
);
54 static struct class_attribute ide_generic_class_attrs
[] = {
55 __ATTR(add
, S_IWUSR
, NULL
, store_add
),
59 static void ide_generic_class_release(struct class *cls
)
64 static int __init
ide_generic_sysfs_init(void)
69 cls
= kzalloc(sizeof(*cls
), GFP_KERNEL
);
74 cls
->owner
= THIS_MODULE
;
75 cls
->class_release
= ide_generic_class_release
;
76 cls
->class_attrs
= ide_generic_class_attrs
;
78 rc
= class_register(cls
);
87 static int __init
ide_generic_init(void)
92 for (i
= 0; i
< MAX_HWIFS
; i
++) {
94 unsigned long io_addr
= ide_default_io_base(i
);
99 * Skip probing if the corresponding
100 * slot is already occupied.
102 hwif
= ide_find_port();
103 if (hwif
== NULL
|| hwif
->index
!= i
) {
108 memset(&hw
, 0, sizeof(hw
));
109 ide_std_init_ports(&hw
, io_addr
, io_addr
+ 0x206);
110 hw
.irq
= ide_default_irq(io_addr
);
111 ide_init_port_hw(hwif
, &hw
);
118 ide_device_add_all(idx
, NULL
);
120 if (ide_generic_sysfs_init())
121 printk(KERN_ERR DRV_NAME
": failed to create ide_generic "
127 module_init(ide_generic_init
);
129 MODULE_LICENSE("GPL");