diff --git a/hw/ide.h b/hw/ide.h
index e0a508b..0e7d540 100644
--- a/hw/ide.h
+++ b/hw/ide.h
@@ -4,8 +4,8 @@
 #include "qdev.h"
 
 /* ide-isa.c */
-void isa_ide_init(int iobase, int iobase2, qemu_irq irq,
-                  DriveInfo *hd0, DriveInfo *hd1);
+int isa_ide_init(int iobase, int iobase2, int isairq,
+                 DriveInfo *hd0, DriveInfo *hd1);
 
 /* ide-pci.c */
 void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table,
diff --git a/hw/ide/isa.c b/hw/ide/isa.c
index ec2d6fb..d2fe0c0 100644
--- a/hw/ide/isa.c
+++ b/hw/ide/isa.c
@@ -24,6 +24,7 @@
  */
 #include <hw/hw.h>
 #include <hw/pc.h>
+#include <hw/isa.h>
 #include "block.h"
 #include "block_int.h"
 #include "sysemu.h"
@@ -35,7 +36,12 @@
 /* ISA IDE definitions */
 
 typedef struct ISAIDEState {
-    IDEBus *bus;
+    ISADevice dev;
+    IDEBus    *bus;
+    uint32_t  iobase;
+    uint32_t  iobase2;
+    uint32_t  isairq;
+    qemu_irq  irq;
 } ISAIDEState;
 
 static void isa_ide_save(QEMUFile* f, void *opaque)
@@ -57,15 +63,54 @@ static int isa_ide_load(QEMUFile* f, void *opaque, int version_id)
     return 0;
 }
 
-void isa_ide_init(int iobase, int iobase2, qemu_irq irq,
-                  DriveInfo *hd0, DriveInfo *hd1)
+static int isa_ide_initfn(ISADevice *dev)
 {
+    ISAIDEState *s = DO_UPCAST(ISAIDEState, dev, dev);
+
+    s->bus = ide_bus_new(&s->dev.qdev);
+    ide_init_ioport(s->bus, s->iobase, s->iobase2);
+    isa_init_irq(dev, &s->irq, s->isairq);
+    ide_init2(s->bus, NULL, NULL, s->irq);
+    register_savevm("isa-ide", 0, 3, isa_ide_save, isa_ide_load, s);
+    return 0;
+};
+
+int isa_ide_init(int iobase, int iobase2, int isairq,
+                 DriveInfo *hd0, DriveInfo *hd1)
+{
+    ISADevice *dev;
     ISAIDEState *s;
 
-    s = qemu_mallocz(sizeof(*s));
-    s->bus = qemu_mallocz(sizeof(IDEBus));
+    dev = isa_create("isa-ide");
+    qdev_prop_set_uint32(&dev->qdev, "iobase",  iobase);
+    qdev_prop_set_uint32(&dev->qdev, "iobase2", iobase2);
+    qdev_prop_set_uint32(&dev->qdev, "irq",     isairq);
+    if (qdev_init(&dev->qdev) != 0)
+        return -1;
 
-    ide_init2(s->bus, hd0, hd1, irq);
-    ide_init_ioport(s->bus, iobase, iobase2);
-    register_savevm("isa-ide", 0, 3, isa_ide_save, isa_ide_load, s);
+    s = DO_UPCAST(ISAIDEState, dev, dev);
+    if (hd0)
+        ide_create_drive(s->bus, 0, hd0);
+    if (hd1)
+        ide_create_drive(s->bus, 1, hd1);
+    return 0;
+}
+
+static ISADeviceInfo isa_ide_info = {
+    .qdev.name  = "isa-ide",
+    .qdev.size  = sizeof(ISAIDEState),
+    .init       = isa_ide_initfn,
+    .qdev.props = (Property[]) {
+        DEFINE_PROP_HEX32("iobase",  ISAIDEState, iobase,  0x1f0),
+        DEFINE_PROP_HEX32("iobase2", ISAIDEState, iobase2, 0x3f6),
+        DEFINE_PROP_UINT32("irq",    ISAIDEState, isairq,  14),
+        DEFINE_PROP_END_OF_LIST(),
+    },
+};
+
+static void isa_ide_register_devices(void)
+{
+    isa_qdev_register(&isa_ide_info);
 }
+
+device_init(isa_ide_register_devices)
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index d801417..fcc7fed 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -274,7 +274,7 @@ void mips_r4k_init (ram_addr_t ram_size,
     }
 
     for(i = 0; i < MAX_IDE_BUS; i++)
-        isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
+        isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
                      hd[MAX_IDE_DEVS * i],
 		     hd[MAX_IDE_DEVS * i + 1]);
 
diff --git a/hw/pc.c b/hw/pc.c
index d96d756..96907b2 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1367,8 +1367,7 @@ static void pc_init1(ram_addr_t ram_size,
         pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
     } else {
         for(i = 0; i < MAX_IDE_BUS; i++) {
-            isa_ide_init(ide_iobase[i], ide_iobase2[i],
-                         isa_reserve_irq(ide_irq[i]),
+            isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
 	                 hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
         }
     }
diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c
index 1930146..6001c86 100644
--- a/hw/ppc_prep.c
+++ b/hw/ppc_prep.c
@@ -707,7 +707,7 @@ static void ppc_prep_init (ram_addr_t ram_size,
     }
 
     for(i = 0; i < MAX_IDE_BUS; i++) {
-        isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
+        isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
                      hd[2 * i],
 		     hd[2 * i + 1]);
     }
