96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
#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)
|
|
|
|
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);
|
|
|
|
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
|