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");