Archipelago » qemu

#ifndef HW_ISA_H

#define HW_ISA_H

/* ISA bus */

#include "ioport.h"

#include "memory.h"

#include "qdev.h"

#define ISA_NUM_IRQS 16

typedef struct ISADevice ISADevice;

#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);

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);

/**

 * 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 DO_UPCAST(ISABus, qbus, d->qdev.parent_bus);

}

extern target_phys_addr_t isa_mem_base;

void isa_mmio_setup(MemoryRegion *mr, target_phys_addr_t size);

void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t 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