qemu/hw/display/ramfb-standalone.c

#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/loader.h"
#include "hw/qdev-properties.h"
#include "hw/isa/isa.h"
#include "hw/display/ramfb.h"
#include "ui/console.h"

#define RAMFB(obj) OBJECT_CHECK(RAMFBStandaloneState, (obj), TYPE_RAMFB_DEVICE)

typedef struct RAMFBStandaloneState {
    SysBusDevice parent_obj;
    QemuConsole *con;
    RAMFBState *state;
    uint32_t xres;
    uint32_t yres;
} RAMFBStandaloneState;

static void display_update_wrapper(void *dev)
{
    RAMFBStandaloneState *ramfb = RAMFB(dev);

    if (0 /* native driver active */) {
        /* non-standalone device would run native display update here */;
    } else {
        ramfb_display_update(ramfb->con, ramfb->state);
    }
}

static const GraphicHwOps wrapper_ops = {
    .gfx_update = display_update_wrapper,
};

static void ramfb_realizefn(DeviceState *dev, Error **errp)
{
    RAMFBStandaloneState *ramfb = RAMFB(dev);

    ramfb->con = graphic_console_init(dev, 0, &wrapper_ops, dev);
    ramfb->state = ramfb_setup(dev, errp);
}

static Property ramfb_properties[] = {
    DEFINE_PROP_UINT32("xres", RAMFBStandaloneState, xres, 0),
    DEFINE_PROP_UINT32("yres", RAMFBStandaloneState, yres, 0),
    DEFINE_PROP_END_OF_LIST(),
};

static void ramfb_class_initfn(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
    dc->realize = ramfb_realizefn;
    dc->props = ramfb_properties;
    dc->desc = "ram framebuffer standalone device";
    dc->user_creatable = true;
}

static const TypeInfo ramfb_info = {
    .name          = TYPE_RAMFB_DEVICE,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(RAMFBStandaloneState),
    .class_init    = ramfb_class_initfn,
};

static void ramfb_register_types(void)
{
    type_register_static(&ramfb_info);
}

type_init(ramfb_register_types)