715ca691da
Add a new connect_irq_notifier notifier in the SysBusDeviceClass. This notifier, if populated, is called after sysbus_connect_irq. This mechanism is used to setup VFIO signaling once VFIO platform devices get attached to their platform bus, on a machine init done notifier. Signed-off-by: Eric Auger <eric.auger@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
#ifndef HW_SYSBUS_H
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#define HW_SYSBUS_H 1
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/* Devices attached directly to the main system bus. */
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#include "hw/qdev.h"
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#include "exec/memory.h"
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#define QDEV_MAX_MMIO 32
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#define QDEV_MAX_PIO 32
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#define TYPE_SYSTEM_BUS "System"
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#define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
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typedef struct SysBusDevice SysBusDevice;
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#define TYPE_SYS_BUS_DEVICE "sys-bus-device"
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#define SYS_BUS_DEVICE(obj) \
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OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
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#define SYS_BUS_DEVICE_CLASS(klass) \
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OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
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#define SYS_BUS_DEVICE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
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/**
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* SysBusDeviceClass:
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* @init: Callback function invoked when the #DeviceState.realized property
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* is changed to %true. Deprecated, new types inheriting directly from
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* TYPE_SYS_BUS_DEVICE should use #DeviceClass.realize instead, new leaf
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* types should consult their respective parent type.
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*
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* SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
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* classes overriding it are not required to invoke its implementation.
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*/
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#define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
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typedef struct SysBusDeviceClass {
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/*< private >*/
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DeviceClass parent_class;
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/*< public >*/
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int (*init)(SysBusDevice *dev);
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/*
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* Let the sysbus device format its own non-PIO, non-MMIO unit address.
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*
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* Sometimes a class of SysBusDevices has neither MMIO nor PIO resources,
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* yet instances of it would like to distinguish themselves, in
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* OpenFirmware device paths, from other instances of the same class on the
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* sysbus. For that end we expose this callback.
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*
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* The implementation is not supposed to change *@dev, or incur other
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* observable change.
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*
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* The function returns a dynamically allocated string. On error, NULL
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* should be returned; the unit address portion of the OFW node will be
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* omitted then. (This is not considered a fatal error.)
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*/
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char *(*explicit_ofw_unit_address)(const SysBusDevice *dev);
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void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
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} SysBusDeviceClass;
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struct SysBusDevice {
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/*< private >*/
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DeviceState parent_obj;
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/*< public >*/
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int num_mmio;
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struct {
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hwaddr addr;
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MemoryRegion *memory;
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} mmio[QDEV_MAX_MMIO];
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int num_pio;
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pio_addr_t pio[QDEV_MAX_PIO];
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};
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typedef int FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque);
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void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
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MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
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void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
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void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
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void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
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bool sysbus_has_irq(SysBusDevice *dev, int n);
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bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n);
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void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
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bool sysbus_is_irq_connected(SysBusDevice *dev, int n);
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qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n);
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void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
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void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
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int priority);
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void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
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MemoryRegion *mem);
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MemoryRegion *sysbus_address_space(SysBusDevice *dev);
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/* Call func for every dynamically created sysbus device in the system */
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void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque);
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/* Legacy helper function for creating devices. */
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DeviceState *sysbus_create_varargs(const char *name,
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hwaddr addr, ...);
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DeviceState *sysbus_try_create_varargs(const char *name,
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hwaddr addr, ...);
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static inline DeviceState *sysbus_create_simple(const char *name,
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hwaddr addr,
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qemu_irq irq)
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{
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return sysbus_create_varargs(name, addr, irq, NULL);
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}
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static inline DeviceState *sysbus_try_create_simple(const char *name,
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hwaddr addr,
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qemu_irq irq)
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{
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return sysbus_try_create_varargs(name, addr, irq, NULL);
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}
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#endif /* !HW_SYSBUS_H */
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