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c839adec88
A helper that returns the address space used by ISA devices. Useful for getting rid of isa_mem_base, multiple ISA buses, or ISA buses behind bridges. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
#ifndef HW_ISA_H
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#define HW_ISA_H
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/* ISA bus */
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#include "ioport.h"
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#include "memory.h"
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#include "qdev.h"
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typedef struct ISABus ISABus;
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typedef struct ISADevice ISADevice;
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typedef struct ISADeviceInfo ISADeviceInfo;
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struct ISADevice {
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DeviceState qdev;
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uint32_t isairq[2];
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int nirqs;
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uint16_t ioports[32];
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int nioports;
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};
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typedef int (*isa_qdev_initfn)(ISADevice *dev);
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struct ISADeviceInfo {
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DeviceInfo qdev;
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isa_qdev_initfn init;
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};
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ISABus *isa_bus_new(DeviceState *dev);
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void isa_bus_irqs(qemu_irq *irqs);
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qemu_irq isa_get_irq(int isairq);
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void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
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void isa_init_ioport(ISADevice *dev, uint16_t ioport);
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void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length);
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void isa_qdev_register(ISADeviceInfo *info);
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MemoryRegion *isa_address_space(ISADevice *dev);
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ISADevice *isa_create(const char *name);
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ISADevice *isa_try_create(const char *name);
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ISADevice *isa_create_simple(const char *name);
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extern target_phys_addr_t isa_mem_base;
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void isa_mmio_setup(MemoryRegion *mr, target_phys_addr_t size);
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void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size);
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/* dma.c */
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int DMA_get_channel_mode (int nchan);
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int DMA_read_memory (int nchan, void *buf, int pos, int size);
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int DMA_write_memory (int nchan, void *buf, int pos, int size);
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void DMA_hold_DREQ (int nchan);
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void DMA_release_DREQ (int nchan);
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void DMA_schedule(int nchan);
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void DMA_init(int high_page_enable, qemu_irq *cpu_request_exit);
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void DMA_register_channel (int nchan,
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DMA_transfer_handler transfer_handler,
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void *opaque);
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#endif
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