1 #ifndef QDEV_H 2 #define QDEV_H 3 4 #include "hw.h" 5 #include "qemu-queue.h" 6 7 typedef struct DeviceType DeviceType; 8 9 typedef struct DeviceProperty DeviceProperty; 10 11 typedef struct BusState BusState; 12 13 /* This structure should not be accessed directly. We declare it here 14 so that it can be embedded in individual device state structures. */ 15 struct DeviceState { 16 DeviceType *type; 17 BusState *parent_bus; 18 DeviceProperty *props; 19 int num_gpio_out; 20 qemu_irq *gpio_out; 21 int num_gpio_in; 22 qemu_irq *gpio_in; 23 QLIST_HEAD(, BusState) child_bus; 24 NICInfo *nd; 25 QLIST_ENTRY(DeviceState) sibling; 26 }; 27 28 typedef enum { 29 BUS_TYPE_SYSTEM, 30 BUS_TYPE_PCI, 31 BUS_TYPE_SCSI, 32 BUS_TYPE_I2C, 33 BUS_TYPE_SSI 34 } BusType; 35 36 struct BusState { 37 DeviceState *parent; 38 const char *name; 39 BusType type; 40 QLIST_HEAD(, DeviceState) children; 41 QLIST_ENTRY(BusState) sibling; 42 }; 43 44 /*** Board API. This should go away once we have a machine config file. ***/ 45 46 DeviceState *qdev_create(BusState *bus, const char *name); 47 void qdev_init(DeviceState *dev); 48 void qdev_free(DeviceState *dev); 49 50 /* Set properties between creation and init. */ 51 void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value); 52 void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value); 53 void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value); 54 void qdev_set_netdev(DeviceState *dev, NICInfo *nd); 55 56 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n); 57 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin); 58 59 BusState *qdev_get_child_bus(DeviceState *dev, const char *name); 60 61 /*** Device API. ***/ 62 63 typedef enum { 64 PROP_TYPE_INT, 65 PROP_TYPE_PTR, 66 PROP_TYPE_DEV 67 } DevicePropType; 68 69 typedef struct { 70 const char *name; 71 DevicePropType type; 72 } DevicePropList; 73 74 typedef struct DeviceInfo DeviceInfo; 75 76 typedef void (*qdev_initfn)(DeviceState *dev, DeviceInfo *info); 77 typedef void (*SCSIAttachFn)(DeviceState *host, BlockDriverState *bdrv, 78 int unit); 79 80 struct DeviceInfo { 81 const char *name; 82 size_t size; 83 DevicePropList *props; 84 85 /* Private to qdev / bus. */ 86 qdev_initfn init; 87 BusType bus_type; 88 }; 89 90 void qdev_register(DeviceInfo *info); 91 92 /* Register device properties. */ 93 /* GPIO inputs also double as IRQ sinks. */ 94 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n); 95 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n); 96 97 void scsi_bus_new(DeviceState *host, SCSIAttachFn attach); 98 99 CharDriverState *qdev_init_chardev(DeviceState *dev); 100 101 BusState *qdev_get_parent_bus(DeviceState *dev); 102 uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def); 103 DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name); 104 /* FIXME: Remove opaque pointer properties. */ 105 void *qdev_get_prop_ptr(DeviceState *dev, const char *name); 106 107 /* Convery from a base type to a parent type, with compile time checking. */ 108 #ifdef __GNUC__ 109 #define DO_UPCAST(type, field, dev) ( __extension__ ( { \ 110 char __attribute__((unused)) offset_must_be_zero[ \ 111 -offsetof(type, field)]; \ 112 container_of(dev, type, field);})) 113 #else 114 #define DO_UPCAST(type, field, dev) container_of(dev, type, field) 115 #endif 116 117 /*** BUS API. ***/ 118 119 BusState *qbus_create(BusType type, size_t size, 120 DeviceState *parent, const char *name); 121 122 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev) 123 124 /*** monitor commands ***/ 125 126 void do_info_qtree(Monitor *mon); 127 void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent); 128 129 #endif 130