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#ifndef HW_ISA_H
#define HW_ISA_H
/* ISA bus */
#include "exec/memory.h"
#include "exec/ioport.h"
#include "hw/qdev-core.h"
#include "qom/object.h"
#define ISA_NUM_IRQS 16
#define TYPE_ISA_DEVICE "isa-device"
OBJECT_DECLARE_TYPE(ISADevice, ISADeviceClass, ISA_DEVICE)
#define TYPE_ISA_BUS "ISA"
OBJECT_DECLARE_SIMPLE_TYPE(ISABus, ISA_BUS)
#define TYPE_ISADMA "isa-dma"
typedef struct IsaDmaClass IsaDmaClass;
DECLARE_CLASS_CHECKERS(IsaDmaClass, ISADMA,
TYPE_ISADMA)
#define ISADMA(obj) \
INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA)
typedef enum {
ISADMA_TRANSFER_VERIFY,
ISADMA_TRANSFER_READ,
ISADMA_TRANSFER_WRITE,
ISADMA_TRANSFER_ILLEGAL,
} IsaDmaTransferMode;
typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos,
int size);
struct IsaDmaClass {
InterfaceClass parent;
bool (*has_autoinitialization)(IsaDma *obj, int nchan);
int (*read_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len);
int (*write_memory)(IsaDma *obj, int nchan, void *buf, int pos, int len);
void (*hold_DREQ)(IsaDma *obj, int nchan);
void (*release_DREQ)(IsaDma *obj, int nchan);
void (*schedule)(IsaDma *obj);
void (*register_channel)(IsaDma *obj, int nchan,
IsaDmaTransferHandler transfer_handler,
void *opaque);
};
struct ISADeviceClass {
DeviceClass parent_class;
};
struct ISABus {
/*< private >*/
BusState parent_obj;
/*< public >*/
MemoryRegion *address_space;
MemoryRegion *address_space_io;
qemu_irq *irqs;
IsaDma *dma[2];
};
struct ISADevice {
/*< private >*/
DeviceState parent_obj;
/*< public >*/
int ioport_id;
};
ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space,
MemoryRegion *address_space_io, Error **errp);
void isa_bus_irqs(ISABus *bus, qemu_irq *irqs);
qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq);
void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq);
void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16);
IsaDma *isa_get_dma(ISABus *bus, int nchan);
MemoryRegion *isa_address_space(ISADevice *dev);
MemoryRegion *isa_address_space_io(ISADevice *dev);
ISADevice *isa_new(const char *name);
ISADevice *isa_try_new(const char *name);
bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp);
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.
* @piolist: the PortioList associated with the io ports
* @start: the base I/O port against which the portio->offset is applied.
* @portio: the ports, sorted by offset.
* @opaque: passed into the portio callbacks.
* @name: passed into memory_region_init_io.
*
* Returns: 0 on success, negative error code otherwise (e.g. if the
* ISA bus is not available)
*/
int isa_register_portio_list(ISADevice *dev,
PortioList *piolist,
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)));
}
#endif
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