isa: add isa_register_ioport()

To replace isa_init_ioport and isa_init_ioport_range
as the ISA devices are converted to the memory api.

[avi: use memory_region_size()]

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>

2 files changed, 14 insertions, 1 deletions

diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index d067505..6c15a31 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -108,6 +108,16 @@ void isa_init_ioport(ISADevice *dev, uint16_t ioport)
     isa_init_ioport_range(dev, ioport, 1);
 }
 
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
+{
+    memory_region_add_subregion(isabus->address_space_io, start, io);
+    if (dev != NULL) {
+        assert(dev->nio < ARRAY_SIZE(dev->io));
+        dev->io[dev->nio++] = io;
+        isa_init_ioport_range(dev, start, memory_region_size(io));
+    }
+}
+
 static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
 {
     ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
diff --git a/hw/isa.h b/hw/isa.h
index 390e2d4..432d17a 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -13,10 +13,12 @@ typedef struct ISADeviceInfo ISADeviceInfo;
 
 struct ISADevice {
     DeviceState qdev;
+    MemoryRegion *io[32];
     uint32_t isairq[2];
-    int nirqs;
     uint16_t ioports[32];
+    int nirqs;
     int nioports;
+    int nio;
 };
 
 typedef int (*isa_qdev_initfn)(ISADevice *dev);
@@ -29,6 +31,7 @@ ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io);
 void isa_bus_irqs(qemu_irq *irqs);
 qemu_irq isa_get_irq(int isairq);
 void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
 void isa_init_ioport(ISADevice *dev, uint16_t ioport);
 void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length);
 void isa_qdev_register(ISADeviceInfo *info);