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 /* FIXME: convert m32r to use ide_platform host driver */
28 #define DRV_NAME "ide_generic"
30 static int probe_mask = 0x03;
31 module_param(probe_mask, int, 0);
32 MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
34 static ssize_t store_add(struct class *cls, const char *buf, size_t n)
36 unsigned int base, ctl;
38 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
40 if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
43 memset(&hw, 0, sizeof(hw));
44 ide_std_init_ports(&hw, base, ctl);
46 hw.chipset = ide_generic;
48 rc = ide_host_add(NULL, hws, NULL);
55 static struct class_attribute ide_generic_class_attrs[] = {
56 __ATTR(add, S_IWUSR, NULL, store_add),
60 static void ide_generic_class_release(struct class *cls)
65 static int __init ide_generic_sysfs_init(void)
70 cls = kzalloc(sizeof(*cls), GFP_KERNEL);
75 cls->owner = THIS_MODULE;
76 cls->class_release = ide_generic_class_release;
77 cls->class_attrs = ide_generic_class_attrs;
79 rc = class_register(cls);
88 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) \
89 || defined(CONFIG_PLAT_OPSPUT)
90 static const u16 legacy_bases[] = { 0x1f0 };
91 static const int legacy_irqs[] = { PLD_IRQ_CFIREQ };
92 #elif defined(CONFIG_PLAT_MAPPI3)
93 static const u16 legacy_bases[] = { 0x1f0, 0x170 };
94 static const int legacy_irqs[] = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
95 #elif defined(CONFIG_ALPHA)
96 static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
97 static const int legacy_irqs[] = { 14, 15, 11, 10 };
99 static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
100 static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
103 static int __init ide_generic_init(void)
105 hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
106 struct ide_host *host;
107 unsigned long io_addr;
111 if (!ide_probe_legacy())
114 printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module "
115 "parameter for probing all legacy ISA IDE ports\n");
117 memset(hws, 0, sizeof(hw_regs_t *) * MAX_HWIFS);
119 for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
120 io_addr = legacy_bases[i];
124 if ((probe_mask & (1 << i)) && io_addr) {
125 if (!request_region(io_addr, 8, DRV_NAME)) {
126 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
128 DRV_NAME, io_addr, io_addr + 7);
132 if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
133 printk(KERN_ERR "%s: I/O resource 0x%lX "
135 DRV_NAME, io_addr + 0x206);
136 release_region(io_addr, 8);
140 memset(&hw[i], 0, sizeof(hw[i]));
141 ide_std_init_ports(&hw[i], io_addr, io_addr + 0x206);
143 hw[i].irq = isa_irq_to_vector(legacy_irqs[i]);
145 hw[i].irq = legacy_irqs[i];
147 hw[i].chipset = ide_generic;
153 host = ide_host_alloc_all(NULL, hws);
159 rc = ide_host_register(host, NULL, hws);
163 if (ide_generic_sysfs_init())
164 printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
171 for (i = 0; i < MAX_HWIFS; i++) {
175 io_addr = hws[i]->io_ports.data_addr;
176 release_region(io_addr + 0x206, 1);
177 release_region(io_addr, 8);
182 module_init(ide_generic_init);
184 MODULE_LICENSE("GPL");