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#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)
#define TYPE_APPLE_SMC "isa-applesmc"
#define APPLESMC_MAX_DATA_LENGTH 32
#define APPLESMC_PROP_IO_BASE "iobase"
static inline uint16_t applesmc_port(void)
{
Object *obj = object_resolve_path_type("", TYPE_APPLE_SMC, NULL);
if (obj) {
return object_property_get_int(obj, APPLESMC_PROP_IO_BASE, NULL);
}
return 0;
}
#define TYPE_ISADMA "isa-dma"
#define ISADMA_CLASS(klass) \
OBJECT_CLASS_CHECK(IsaDmaClass, (klass), TYPE_ISADMA)
#define ISADMA_GET_CLASS(obj) \
OBJECT_GET_CLASS(IsaDmaClass, (obj), TYPE_ISADMA)
#define ISADMA(obj) \
INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA)
struct IsaDma {
Object parent;
};
typedef enum {
ISADMA_TRANSFER_VERIFY,
ISADMA_TRANSFER_READ,
ISADMA_TRANSFER_WRITE,
ISADMA_TRANSFER_ILLEGAL,
} IsaDmaTransferMode;
typedef struct IsaDmaClass {
InterfaceClass parent;
IsaDmaTransferMode (*get_transfer_mode)(IsaDma *obj, int nchan);
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,
DMA_transfer_handler transfer_handler,
void *opaque);
} IsaDmaClass;
typedef struct ISADeviceClass {
DeviceClass parent_class;
} ISADeviceClass;
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 >*/
uint32_t isairq[2];
int nirqs;
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, int isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, int 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_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 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)));
}
/* i8257.c */
void DMA_init(ISABus *bus, int high_page_enable);
#endif
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