[Qemu-devel] [RFC v2 07/10] fdc: Implement ISA set_state() callback

["Andreas Färber" <andreas.faerber@web.de>]

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
---
 hw/fdc.c |   42 ++++++++++++++++++++++++++++++------------
 1 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/hw/fdc.c b/hw/fdc.c
index f4e3e0d..6d8914f 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1894,25 +1894,42 @@ static int fdctrl_init_common(FDCtrl *fdctrl)
     return fdctrl_connect_drives(fdctrl);
 }
 
+static void isabus_fdc_set_state(ISADevice *dev, bool enabled)
+{
+    FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
+    FDCtrl *fdctrl = &isa->state;
+
+    if (enabled) {
+        register_ioport_read(isa->iobase + 0x01, 5, 1,
+                             &fdctrl_read_port, fdctrl);
+        register_ioport_read(isa->iobase + 0x07, 1, 1,
+                             &fdctrl_read_port, fdctrl);
+        register_ioport_write(isa->iobase + 0x01, 5, 1,
+                              &fdctrl_write_port, fdctrl);
+        register_ioport_write(isa->iobase + 0x07, 1, 1,
+                              &fdctrl_write_port, fdctrl);
+        isa_init_ioport_range(dev, isa->iobase, 6);
+        isa_init_ioport(dev, isa->iobase + 7);
+
+        isa_init_irq(&isa->busdev, &fdctrl->irq, isa->irq);
+    } else {
+        isa_discard_ioport_range(dev, isa->iobase + 0x07, 1);
+        isa_discard_ioport_range(dev, isa->iobase + 0x01, 5);
+        isa_unassign_ioport(isa->iobase + 7, 1);
+        isa_unassign_ioport(isa->iobase, 6);
+        
+        isa_discard_irq(&isa->busdev, isa->irq);
+    }
+}
+
 static int isabus_fdc_init1(ISADevice *dev)
 {
     FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
     FDCtrl *fdctrl = &isa->state;
     int ret;
 
-    register_ioport_read(isa->iobase + 0x01, 5, 1,
-                         &fdctrl_read_port, fdctrl);
-    register_ioport_read(isa->iobase + 0x07, 1, 1,
-                         &fdctrl_read_port, fdctrl);
-    register_ioport_write(isa->iobase + 0x01, 5, 1,
-                          &fdctrl_write_port, fdctrl);
-    register_ioport_write(isa->iobase + 0x07, 1, 1,
-                          &fdctrl_write_port, fdctrl);
-    isa_init_ioport_range(dev, isa->iobase, 6);
-    isa_init_ioport(dev, isa->iobase + 7);
-
-    isa_init_irq(&isa->busdev, &fdctrl->irq, isa->irq);
     fdctrl->dma_chann = isa->dma;
+    isabus_fdc_set_state(dev, true);
 
     qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 2);
     ret = fdctrl_init_common(fdctrl);
@@ -1972,6 +1989,7 @@ static const VMStateDescription vmstate_isa_fdc ={
 
 static ISADeviceInfo isa_fdc_info = {
     .init = isabus_fdc_init1,
+    .set_state = isabus_fdc_set_state,
     .qdev.name  = "isa-fdc",
     .qdev.fw_name  = "fdc",
     .qdev.size  = sizeof(FDCtrlISABus),
-- 
1.7.5.3