[Qemu-devel] [PATCH v2 08/26] fdc: QOM'ify some more

[Hu Tao]

Introduce type constant and avoid DO_UPCAST(), container_of(),
and use DEVICE() to avoid accessing parent qdev directly.

Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
---
 hw/block/fdc.c | 37 ++++++++++++++++++++-----------------
 1 file changed, 20 insertions(+), 17 deletions(-)

diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 930f191..f8270cb 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -544,6 +544,9 @@ struct FDCtrl {
     uint8_t timer1;
 };
 
+#define TYPE_SYSBUS_FDC "sysbus-fdc"
+#define SYSBUS_FDC(obj) OBJECT_CHECK(FDCtrlSysBus, (obj), TYPE_SYSBUS_FDC)
+
 typedef struct FDCtrlSysBus {
     SysBusDevice busdev;
     struct FDCtrl state;
@@ -773,10 +776,9 @@ static const VMStateDescription vmstate_fdc = {
 
 static void fdctrl_external_reset_sysbus(DeviceState *d)
 {
-    FDCtrlSysBus *sys = container_of(d, FDCtrlSysBus, busdev.qdev);
-    FDCtrl *s = &sys->state;
+    FDCtrlSysBus *sys = SYSBUS_FDC(d);
 
-    fdctrl_reset(s, 0);
+    fdctrl_reset(&sys->state, 0);
 }
 
 static void fdctrl_external_reset_isa(DeviceState *d)
@@ -2049,8 +2051,8 @@ void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
     DeviceState *dev;
     FDCtrlSysBus *sys;
 
-    dev = qdev_create(NULL, "sysbus-fdc");
-    sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
+    dev = qdev_create(NULL, TYPE_SYSBUS_FDC);
+    sys = SYSBUS_FDC(dev);
     fdctrl = &sys->state;
     fdctrl->dma_chann = dma_chann; /* FIXME */
     if (fds[0]) {
@@ -2060,8 +2062,8 @@ void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
         qdev_prop_set_drive_nofail(dev, "driveB", fds[1]->bdrv);
     }
     qdev_init_nofail(dev);
-    sysbus_connect_irq(&sys->busdev, 0, irq);
-    sysbus_mmio_map(&sys->busdev, 0, mmio_base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq);
+    sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, mmio_base);
 }
 
 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
@@ -2075,9 +2077,9 @@ void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
         qdev_prop_set_drive_nofail(dev, "drive", fds[0]->bdrv);
     }
     qdev_init_nofail(dev);
-    sys = DO_UPCAST(FDCtrlSysBus, busdev.qdev, dev);
-    sysbus_connect_irq(&sys->busdev, 0, irq);
-    sysbus_mmio_map(&sys->busdev, 0, io_base);
+    sys = SYSBUS_FDC(dev);
+    sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq);
+    sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base);
     *fdc_tc = qdev_get_gpio_in(dev, 0);
 }
 
@@ -2145,17 +2147,17 @@ static void isabus_fdc_realize(DeviceState *dev, Error 
**errp)
 
 static int sysbus_fdc_init1(SysBusDevice *dev)
 {
-    FDCtrlSysBus *sys = DO_UPCAST(FDCtrlSysBus, busdev, dev);
+    FDCtrlSysBus *sys = SYSBUS_FDC(dev);
     FDCtrl *fdctrl = &sys->state;
     int ret;
 
     memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_ops, fdctrl, "fdc", 
0x08);
     sysbus_init_mmio(dev, &fdctrl->iomem);
     sysbus_init_irq(dev, &fdctrl->irq);
-    qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
+    qdev_init_gpio_in(DEVICE(dev), fdctrl_handle_tc, 1);
     fdctrl->dma_chann = -1;
 
-    qdev_set_legacy_instance_id(&dev->qdev, 0 /* io */, 2); /* FIXME */
+    qdev_set_legacy_instance_id(DEVICE(dev), 0 /* io */, 2); /* FIXME */
     ret = fdctrl_init_common(fdctrl);
 
     return ret;
@@ -2163,16 +2165,17 @@ static int sysbus_fdc_init1(SysBusDevice *dev)
 
 static int sun4m_fdc_init1(SysBusDevice *dev)
 {
-    FDCtrl *fdctrl = &(FROM_SYSBUS(FDCtrlSysBus, dev)->state);
+    FDCtrlSysBus *sys = SYSBUS_FDC(dev);
+    FDCtrl *fdctrl = &sys->state;
 
     memory_region_init_io(&fdctrl->iomem, &fdctrl_mem_strict_ops, fdctrl,
                           "fdctrl", 0x08);
     sysbus_init_mmio(dev, &fdctrl->iomem);
     sysbus_init_irq(dev, &fdctrl->irq);
-    qdev_init_gpio_in(&dev->qdev, fdctrl_handle_tc, 1);
+    qdev_init_gpio_in(DEVICE(dev), fdctrl_handle_tc, 1);
 
     fdctrl->sun4m = 1;
-    qdev_set_legacy_instance_id(&dev->qdev, 0 /* io */, 2); /* FIXME */
+    qdev_set_legacy_instance_id(DEVICE(dev), 0 /* io */, 2); /* FIXME */
     return fdctrl_init_common(fdctrl);
 }
 
@@ -2253,7 +2256,7 @@ static void sysbus_fdc_class_init(ObjectClass *klass, 
void *data)
 }
 
 static const TypeInfo sysbus_fdc_info = {
-    .name          = "sysbus-fdc",
+    .name          = TYPE_SYSBUS_FDC,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(FDCtrlSysBus),
     .class_init    = sysbus_fdc_class_init,
-- 
1.8.3.1