#ifndef HW_SYSBUS_H #define HW_SYSBUS_H /* Devices attached directly to the main system bus. */ #include "hw/qdev-core.h" #include "exec/memory.h" #include "qom/object.h" #define QDEV_MAX_MMIO 32 #define QDEV_MAX_PIO 32 #define TYPE_SYSTEM_BUS "System" DECLARE_INSTANCE_CHECKER(BusState, SYSTEM_BUS, TYPE_SYSTEM_BUS) #define TYPE_SYS_BUS_DEVICE "sys-bus-device" OBJECT_DECLARE_TYPE(SysBusDevice, SysBusDeviceClass, sys_bus_device, SYS_BUS_DEVICE) /** * SysBusDeviceClass: * * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived * classes overriding it are not required to invoke its implementation. */ #define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq" struct SysBusDeviceClass { /*< private >*/ DeviceClass parent_class; /* * Let the sysbus device format its own non-PIO, non-MMIO unit address. * * Sometimes a class of SysBusDevices has neither MMIO nor PIO resources, * yet instances of it would like to distinguish themselves, in * OpenFirmware device paths, from other instances of the same class on the * sysbus. For that end we expose this callback. * * The implementation is not supposed to change *@dev, or incur other * observable change. * * The function returns a dynamically allocated string. On error, NULL * should be returned; the unit address portion of the OFW node will be * omitted then. (This is not considered a fatal error.) */ char *(*explicit_ofw_unit_address)(const SysBusDevice *dev); void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq); }; struct SysBusDevice { /*< private >*/ DeviceState parent_obj; /*< public >*/ int num_mmio; struct { hwaddr addr; MemoryRegion *memory; } mmio[QDEV_MAX_MMIO]; int num_pio; uint32_t pio[QDEV_MAX_PIO]; }; typedef void FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque); void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory); MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n); void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p); void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target); void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size); bool sysbus_has_irq(SysBusDevice *dev, int n); bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n); void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq); bool sysbus_is_irq_connected(SysBusDevice *dev, int n); qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n); void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr); void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr, int priority); void sysbus_mmio_unmap(SysBusDevice *dev, int n); void sysbus_add_io(SysBusDevice *dev, hwaddr addr, MemoryRegion *mem); MemoryRegion *sysbus_address_space(SysBusDevice *dev); bool sysbus_realize(SysBusDevice *dev, Error **errp); bool sysbus_realize_and_unref(SysBusDevice *dev, Error **errp); /* Call func for every dynamically created sysbus device in the system */ void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque); /* Legacy helper function for creating devices. */ DeviceState *sysbus_create_varargs(const char *name, hwaddr addr, ...); static inline DeviceState *sysbus_create_simple(const char *name, hwaddr addr, qemu_irq irq) { return sysbus_create_varargs(name, addr, irq, NULL); } #endif /* HW_SYSBUS_H */