1 files changed, 104 insertions, 0 deletions
diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
new file mode 100644
index 000000000..82da37c11
--- /dev/null
+++ b/include/hw/isa/isa.h
@@ -0,0 +1,104 @@
+#ifndef HW_ISA_H
+#define HW_ISA_H
+
+/* ISA bus */
+
+#include "exec/ioport.h"
+#include "exec/memory.h"
+#include "hw/qdev.h"
+
+#define ISA_NUM_IRQS 16
+
+#define TYPE_ISA_DEVICE "isa-device"
+#define ISA_DEVICE(obj) \
+     OBJECT_CHECK(ISADevice, (obj), TYPE_ISA_DEVICE)
+#define ISA_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(ISADeviceClass, (klass), TYPE_ISA_DEVICE)
+#define ISA_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(ISADeviceClass, (obj), TYPE_ISA_DEVICE)
+
+#define TYPE_ISA_BUS "ISA"
+#define ISA_BUS(obj) OBJECT_CHECK(ISABus, (obj), TYPE_ISA_BUS)
+
+typedef struct ISADeviceClass {
+    DeviceClass parent_class;
+    int (*init)(ISADevice *dev);
+} ISADeviceClass;
+
+struct ISABus {
+    BusState qbus;
+    MemoryRegion *address_space_io;
+    qemu_irq *irqs;
+};
+
+struct ISADevice {
+    DeviceState qdev;
+    uint32_t isairq[2];
+    int nirqs;
+    int ioport_id;
+};
+
+ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io);
+void isa_bus_irqs(ISABus *bus, qemu_irq *irqs);
+qemu_irq isa_get_irq(ISADevice *dev, int isairq);
+void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
+MemoryRegion *isa_address_space(ISADevice *dev);
+MemoryRegion *isa_address_space_io(ISADevice *dev);
+ISADevice *isa_create(ISABus *bus, const char *name);
+ISADevice *isa_try_create(ISABus *bus, const char *name);
+ISADevice *isa_create_simple(ISABus *bus, const char *name);
+
+ISADevice *isa_vga_init(ISABus *bus);
+
+/**
+ * isa_register_ioport: Install an I/O port region on the ISA bus.
+ *
+ * Register an I/O port region via memory_region_add_subregion
+ * inside the ISA I/O address space.
+ *
+ * @dev: the ISADevice against which these are registered; may be NULL.
+ * @io: the #MemoryRegion being registered.
+ * @start: the base I/O port.
+ */
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
+
+/**
+ * isa_register_portio_list: Initialize a set of ISA io ports
+ *
+ * Several ISA devices have many dis-joint I/O ports.  Worse, these I/O
+ * ports can be interleaved with I/O ports from other devices.  This
+ * function makes it easy to create multiple MemoryRegions for a single
+ * device and use the legacy portio routines.
+ *
+ * @dev: the ISADevice against which these are registered; may be NULL.
+ * @start: the base I/O port against which the portio->offset is applied.
+ * @portio: the ports, sorted by offset.
+ * @opaque: passed into the old_portio callbacks.
+ * @name: passed into memory_region_init_io.
+ */
+void isa_register_portio_list(ISADevice *dev, uint16_t start,
+                              const MemoryRegionPortio *portio,
+                              void *opaque, const char *name);
+
+static inline ISABus *isa_bus_from_device(ISADevice *d)
+{
+    return ISA_BUS(qdev_get_parent_bus(DEVICE(d)));
+}
+
+extern hwaddr isa_mem_base;
+
+void isa_mmio_setup(MemoryRegion *mr, hwaddr size);
+void isa_mmio_init(hwaddr base, hwaddr size);
+
+/* dma.c */
+int DMA_get_channel_mode (int nchan);
+int DMA_read_memory (int nchan, void *buf, int pos, int size);
+int DMA_write_memory (int nchan, void *buf, int pos, int size);
+void DMA_hold_DREQ (int nchan);
+void DMA_release_DREQ (int nchan);
+void DMA_schedule(int nchan);
+void DMA_init(int high_page_enable, qemu_irq *cpu_request_exit);
+void DMA_register_channel (int nchan,
+                           DMA_transfer_handler transfer_handler,
+                           void *opaque);
+#endif