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path: root/drivers/ide/ide-legacy.c
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Diffstat (limited to 'drivers/ide/ide-legacy.c')
-rw-r--r--drivers/ide/ide-legacy.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/ide/ide-legacy.c b/drivers/ide/ide-legacy.c
new file mode 100644
index 00000000..b9654a7b
--- /dev/null
+++ b/drivers/ide/ide-legacy.c
@@ -0,0 +1,57 @@
+#include <linux/kernel.h>
+#include <linux/ide.h>
+
+static void ide_legacy_init_one(struct ide_hw **hws, struct ide_hw *hw,
+ u8 port_no, const struct ide_port_info *d,
+ unsigned long config)
+{
+ unsigned long base, ctl;
+ int irq;
+
+ if (port_no == 0) {
+ base = 0x1f0;
+ ctl = 0x3f6;
+ irq = 14;
+ } else {
+ base = 0x170;
+ ctl = 0x376;
+ irq = 15;
+ }
+
+ if (!request_region(base, 8, d->name)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+ d->name, base, base + 7);
+ return;
+ }
+
+ if (!request_region(ctl, 1, d->name)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+ d->name, ctl);
+ release_region(base, 8);
+ return;
+ }
+
+ ide_std_init_ports(hw, base, ctl);
+ hw->irq = irq;
+ hw->config = config;
+
+ hws[port_no] = hw;
+}
+
+int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
+{
+ struct ide_hw hw[2], *hws[] = { NULL, NULL };
+
+ memset(&hw, 0, sizeof(hw));
+
+ if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
+ ide_legacy_init_one(hws, &hw[0], 0, d, config);
+ ide_legacy_init_one(hws, &hw[1], 1, d, config);
+
+ if (hws[0] == NULL && hws[1] == NULL &&
+ (d->host_flags & IDE_HFLAG_SINGLE))
+ return -ENOENT;
+
+ return ide_host_add(d, hws, 2, NULL);
+}
+EXPORT_SYMBOL_GPL(ide_legacy_device_add);