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>
22 #include <linux/pci_ids.h>
24 /* FIXME: convert m32r to use ide_platform host driver */
29 #define DRV_NAME "ide_generic"
31 static int probe_mask;
32 module_param(probe_mask, int, 0);
33 MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
35 static const struct ide_port_info ide_generic_port_info = {
36 .host_flags = IDE_HFLAG_NO_DMA,
39 static ssize_t store_add(struct class *cls, const char *buf, size_t n)
41 unsigned int base, ctl;
43 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
45 if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
48 memset(&hw, 0, sizeof(hw));
49 ide_std_init_ports(&hw, base, ctl);
51 hw.chipset = ide_generic;
53 rc = ide_host_add(&ide_generic_port_info, hws, NULL);
60 static struct class_attribute ide_generic_class_attrs[] = {
61 __ATTR(add, S_IWUSR, NULL, store_add),
65 static void ide_generic_class_release(struct class *cls)
70 static int __init ide_generic_sysfs_init(void)
75 cls = kzalloc(sizeof(*cls), GFP_KERNEL);
80 cls->owner = THIS_MODULE;
81 cls->class_release = ide_generic_class_release;
82 cls->class_attrs = ide_generic_class_attrs;
84 rc = class_register(cls);
93 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) \
94 || defined(CONFIG_PLAT_OPSPUT)
95 static const u16 legacy_bases[] = { 0x1f0 };
96 static const int legacy_irqs[] = { PLD_IRQ_CFIREQ };
97 #elif defined(CONFIG_PLAT_MAPPI3)
98 static const u16 legacy_bases[] = { 0x1f0, 0x170 };
99 static const int legacy_irqs[] = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
100 #elif defined(CONFIG_ALPHA)
101 static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
102 static const int legacy_irqs[] = { 14, 15, 11, 10 };
104 static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
105 static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
108 static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
110 struct pci_dev *p = NULL;
113 for_each_pci_dev(p) {
115 if (pci_resource_start(p, 0) == 0x1f0)
117 if (pci_resource_start(p, 2) == 0x170)
120 /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
121 if (p->vendor == PCI_VENDOR_ID_CYRIX &&
122 (p->device == PCI_DEVICE_ID_CYRIX_5510 ||
123 p->device == PCI_DEVICE_ID_CYRIX_5520))
124 *primary = *secondary = 1;
126 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
127 if (p->vendor == PCI_VENDOR_ID_INTEL &&
128 p->device == PCI_DEVICE_ID_INTEL_82371MX) {
130 pci_read_config_word(p, 0x6C, &val);
132 /* ATA port enabled */
142 static int __init ide_generic_init(void)
144 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
145 unsigned long io_addr;
146 int i, rc = 0, primary = 0, secondary = 0;
148 ide_generic_check_pci_legacy_iobases(&primary, &secondary);
151 printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" "
152 "module parameter for probing all legacy ISA IDE ports\n");
160 printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
161 "upon user request\n");
163 for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
164 io_addr = legacy_bases[i];
166 if ((probe_mask & (1 << i)) && io_addr) {
167 if (!request_region(io_addr, 8, DRV_NAME)) {
168 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
170 DRV_NAME, io_addr, io_addr + 7);
174 if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
175 printk(KERN_ERR "%s: I/O resource 0x%lX "
177 DRV_NAME, io_addr + 0x206);
178 release_region(io_addr, 8);
182 memset(&hw, 0, sizeof(hw));
183 ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
185 hw.irq = isa_irq_to_vector(legacy_irqs[i]);
187 hw.irq = legacy_irqs[i];
189 hw.chipset = ide_generic;
191 rc = ide_host_add(&ide_generic_port_info, hws, NULL);
193 release_region(io_addr + 0x206, 1);
194 release_region(io_addr, 8);
199 if (ide_generic_sysfs_init())
200 printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
206 module_init(ide_generic_init);
208 MODULE_LICENSE("GPL");