hw/char: QOM'ify xilinx_uartlite model

* drop qemu_char_get_next_serial and use chardev prop
* create xilinx_uartlite_create wrapper function to create
  xilinx_uartlite device
* change affected board code to use the new way

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 1465028065-5855-6-git-send-email-zxq_yx_007@163.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/char/xilinx_uartlite.c

@@ -172,6 +172,11 @@ static const MemoryRegionOps uart_ops = {
     }
 };
 
+static Property xilinx_uartlite_properties[] = {
+    DEFINE_PROP_CHR("chardev", XilinxUARTLite, chr),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void uart_rx(void *opaque, const uint8_t *buf, int size)
 {
     XilinxUARTLite *s = opaque;
@@ -206,8 +211,6 @@ static void xilinx_uartlite_realize(DeviceState *dev, Error **errp)
 {
     XilinxUARTLite *s = XILINX_UARTLITE(dev);
 
-    /* FIXME use a qdev chardev prop instead of qemu_char_get_next_serial() */
-    s->chr = qemu_char_get_next_serial();
     if (s->chr)
         qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s);
 }
@@ -229,8 +232,7 @@ static void xilinx_uartlite_class_init(ObjectClass *klass, void *data)
 
     dc->reset = xilinx_uartlite_reset;
     dc->realize = xilinx_uartlite_realize;
-    /* Reason: realize() method uses qemu_char_get_next_serial() */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->props = xilinx_uartlite_properties;
 }
 
 static const TypeInfo xilinx_uartlite_info = {

hw/microblaze/petalogix_s3adsp1800_mmu.c

@@ -36,6 +36,7 @@
 #include "hw/boards.h"
 #include "sysemu/block-backend.h"
 #include "exec/address-spaces.h"
+#include "hw/char/xilinx_uartlite.h"
 
 #include "boot.h"
 
@@ -103,8 +104,8 @@ petalogix_s3adsp1800_init(MachineState *machine)
         irq[i] = qdev_get_gpio_in(dev, i);
     }
 
-    sysbus_create_simple("xlnx.xps-uartlite", UARTLITE_BASEADDR,
-                         irq[UARTLITE_IRQ]);
+    xilinx_uartlite_create(UARTLITE_BASEADDR, irq[UARTLITE_IRQ],
+                           serial_hds[0]);
 
     /* 2 timers at irq 2 @ 62 Mhz.  */
     dev = qdev_create(NULL, "xlnx.xps-timer");

include/hw/char/xilinx_uartlite.h

@@ -0,0 +1,35 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XILINX_UARTLITE_H
+#define XILINX_UARTLITE_H
+
+static inline DeviceState *xilinx_uartlite_create(hwaddr addr,
+                                        qemu_irq irq,
+                                        CharDriverState *chr)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_create(NULL, "xlnx.xps-uartlite");
+    s = SYS_BUS_DEVICE(dev);
+    qdev_prop_set_chr(dev, "chardev", chr);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(s, 0, addr);
+    sysbus_connect_irq(s, 0, irq);
+
+    return dev;
+}
+
+#endif