hw/display/ramfb-standalone.c

   1 #include "qemu/osdep.h"
   2 #include "migration/vmstate.h"
   3 #include "qapi/error.h"
   4 #include "qemu/module.h"
   5 #include "hw/loader.h"
   6 #include "hw/qdev-properties.h"
   7 #include "hw/display/ramfb.h"
   8 #include "ui/console.h"
   9 #include "qom/object.h"
  10
  11 typedef struct RAMFBStandaloneState RAMFBStandaloneState;
  12 DECLARE_INSTANCE_CHECKER(RAMFBStandaloneState, RAMFB,
  13                          TYPE_RAMFB_DEVICE)
  14
  15 struct RAMFBStandaloneState {
  16     SysBusDevice parent_obj;
  17     QemuConsole *con;
  18     RAMFBState *state;
  19     bool migrate;
  20 };
  21
  22 static void display_update_wrapper(void *dev)
  23 {
  24     RAMFBStandaloneState *ramfb = RAMFB(dev);
  25
  26     if (0 /* native driver active */) {
  27         /* non-standalone device would run native display update here */;
  28     } else {
  29         ramfb_display_update(ramfb->con, ramfb->state);
  30     }
  31 }
  32
  33 static const GraphicHwOps wrapper_ops = {
  34     .gfx_update = display_update_wrapper,
  35 };
  36
  37 static void ramfb_realizefn(DeviceState *dev, Error **errp)
  38 {
  39     RAMFBStandaloneState *ramfb = RAMFB(dev);
  40
  41     ramfb->con = graphic_console_init(dev, 0, &wrapper_ops, dev);
  42     ramfb->state = ramfb_setup(errp);
  43 }
  44
  45 static bool migrate_needed(void *opaque)
  46 {
  47     RAMFBStandaloneState *ramfb = RAMFB(opaque);
  48
  49     return ramfb->migrate;
  50 }
  51
  52 static const VMStateDescription ramfb_dev_vmstate = {
  53     .name = "ramfb-dev",
  54     .version_id = 1,
  55     .minimum_version_id = 1,
  56     .needed = migrate_needed,
  57     .fields = (const VMStateField[]) {
  58         VMSTATE_STRUCT_POINTER(state, RAMFBStandaloneState, ramfb_vmstate, RAMFBState),
  59         VMSTATE_END_OF_LIST()
  60     }
  61 };
  62
  63 static Property ramfb_properties[] = {
  64     DEFINE_PROP_BOOL("x-migrate", RAMFBStandaloneState, migrate,  true),
  65     DEFINE_PROP_END_OF_LIST(),
  66 };
  67
  68 static void ramfb_class_initfn(ObjectClass *klass, void *data)
  69 {
  70     DeviceClass *dc = DEVICE_CLASS(klass);
  71
  72     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
  73     dc->vmsd = &ramfb_dev_vmstate;
  74     dc->realize = ramfb_realizefn;
  75     dc->desc = "ram framebuffer standalone device";
  76     dc->user_creatable = true;
  77     device_class_set_props(dc, ramfb_properties);
  78 }
  79
  80 static const TypeInfo ramfb_info = {
  81     .name          = TYPE_RAMFB_DEVICE,
  82     .parent        = TYPE_SYS_BUS_DEVICE,
  83     .instance_size = sizeof(RAMFBStandaloneState),
  84     .class_init    = ramfb_class_initfn,
  85 };
  86
  87 static void ramfb_register_types(void)
  88 {
  89     type_register_static(&ramfb_info);
  90 }
  91
  92 type_init(ramfb_register_types)