From aae9460e244c7abe70b72ff374b3aa102bb09691 Mon Sep 17 00:00:00 2001 From: Paul Brook Date: Thu, 14 May 2009 22:35:06 +0100 Subject: Basic qdev infrastructure. Signed-off-by: Paul Brook --- hw/sysbus.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 hw/sysbus.h (limited to 'hw/sysbus.h') diff --git a/hw/sysbus.h b/hw/sysbus.h new file mode 100644 index 0000000..44ed792 --- /dev/null +++ b/hw/sysbus.h @@ -0,0 +1,56 @@ +#ifndef HW_SYSBUS_H +#define HW_SYSBUS_H 1 + +/* Devices attached directly to the main system bus. */ + +#include "qdev.h" + +#define QDEV_MAX_MMIO 5 +#define QDEV_MAX_IRQ 32 + +typedef struct SysBusDevice SysBusDevice; +typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr); + +struct SysBusDevice { + DeviceState qdev; + int num_irq; + qemu_irq irqs[QDEV_MAX_IRQ]; + qemu_irq *irqp[QDEV_MAX_IRQ]; + int num_mmio; + struct { + target_phys_addr_t addr; + target_phys_addr_t size; + mmio_mapfunc cb; + int iofunc; + } mmio[QDEV_MAX_MMIO]; +}; + +typedef void (*sysbus_initfn)(SysBusDevice *dev); + +/* Macros to compensate for lack of type inheritance in C. */ +#define sysbus_from_qdev(dev) ((SysBusDevice *)(dev)) +#define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev) + +void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init); +void *sysbus_new(void); +void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, int iofunc); +void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size, + mmio_mapfunc cb); +void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p); +void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target); + + +void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq); +void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr); + +/* Legacy helper function for creating devices. */ +DeviceState *sysbus_create_varargs(const char *name, + target_phys_addr_t addr, ...); +static inline DeviceState *sysbus_create_simple(const char *name, + target_phys_addr_t addr, + qemu_irq irq) +{ + return sysbus_create_varargs(name, addr, irq, NULL); +} + +#endif /* !HW_SYSBUS_H */ -- cgit v1.1