Merge remote-tracking branch 'remotes/rth/tags/pull-hppa-20190316' into staging

[mirror_qemu.git] / hw / char / etraxfs_ser.c

diff --git a/hw/char/etraxfs_ser.c b/hw/char/etraxfs_ser.c
index 857c13621c3a676f35546f95606956cea61c1d01..a18402641085d7efbedf319a94a84d7de0a6de80 100644 (file)
--- a/hw/char/etraxfs_ser.c
+++ b/hw/char/etraxfs_ser.c
@@ -22,8 +22,9 @@
  * THE SOFTWARE.
  */
 
+#include "qemu/osdep.h"
 #include "hw/sysbus.h"
-#include "sysemu/char.h"
+#include "chardev/char-fe.h"
 #include "qemu/log.h"
 
 #define D(x)
@@ -52,7 +53,7 @@ typedef struct ETRAXSerial {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
-    CharDriverState *chr;
+    CharBackend chr;
     qemu_irq irq;
 
     int pending_tx;
@@ -125,7 +126,9 @@ ser_write(void *opaque, hwaddr addr,
     switch (addr)
     {
         case RW_DOUT:
-            qemu_chr_fe_write(s->chr, &ch, 1);
+            /* XXX this blocks entire thread. Rewrite to use
+             * qemu_chr_fe_write and background I/O callbacks */
+            qemu_chr_fe_write_all(&s->chr, &ch, 1);
             s->regs[R_INTR] |= 3;
             s->pending_tx = 1;
             s->regs[addr] = value;
@@ -158,6 +161,11 @@ static const MemoryRegionOps ser_ops = {
     }
 };
 
+static Property etraxfs_ser_properties[] = {
+    DEFINE_PROP_CHR("chardev", ETRAXSerial, chr),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void serial_receive(void *opaque, const uint8_t *buf, int size)
 {
     ETRAXSerial *s = opaque;
@@ -165,7 +173,7 @@ static void serial_receive(void *opaque, const uint8_t *buf, int size)
 
     /* Got a byte.  */
     if (s->rx_fifo_len >= 16) {
-        qemu_log("WARNING: UART dropped char.\n");
+        D(qemu_log("WARNING: UART dropped char.\n"));
         return;
     }
 
@@ -182,15 +190,13 @@ static void serial_receive(void *opaque, const uint8_t *buf, int size)
 static int serial_can_receive(void *opaque)
 {
     ETRAXSerial *s = opaque;
-    int r;
 
     /* Is the receiver enabled?  */
     if (!(s->regs[RW_REC_CTRL] & (1 << 3))) {
         return 0;
     }
 
-    r = sizeof(s->rx_fifo) - s->rx_fifo_len;
-    return r;
+    return sizeof(s->rx_fifo) - s->rx_fifo_len;
 }
 
 static void serial_event(void *opaque, int event)
@@ -210,40 +216,40 @@ static void etraxfs_ser_reset(DeviceState *d)
 
 }
 
-static int etraxfs_ser_init(SysBusDevice *dev)
+static void etraxfs_ser_init(Object *obj)
 {
-    ETRAXSerial *s = ETRAX_SERIAL(dev);
+    ETRAXSerial *s = ETRAX_SERIAL(obj);
+    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
 
     sysbus_init_irq(dev, &s->irq);
-    memory_region_init_io(&s->mmio, OBJECT(s), &ser_ops, s,
+    memory_region_init_io(&s->mmio, obj, &ser_ops, s,
                           "etraxfs-serial", R_MAX * 4);
     sysbus_init_mmio(dev, &s->mmio);
+}
 
-    /* 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,
-                              serial_can_receive, serial_receive,
-                              serial_event, s);
-    }
-    return 0;
+static void etraxfs_ser_realize(DeviceState *dev, Error **errp)
+{
+    ETRAXSerial *s = ETRAX_SERIAL(dev);
+
+    qemu_chr_fe_set_handlers(&s->chr,
+                             serial_can_receive, serial_receive,
+                             serial_event, NULL, s, NULL, true);
 }
 
 static void etraxfs_ser_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 
-    k->init = etraxfs_ser_init;
     dc->reset = etraxfs_ser_reset;
-    /* Reason: init() method uses qemu_char_get_next_serial() */
-    dc->cannot_instantiate_with_device_add_yet = true;
+    dc->props = etraxfs_ser_properties;
+    dc->realize = etraxfs_ser_realize;
 }
 
 static const TypeInfo etraxfs_ser_info = {
     .name          = TYPE_ETRAX_FS_SERIAL,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(ETRAXSerial),
+    .instance_init = etraxfs_ser_init,
     .class_init    = etraxfs_ser_class_init,
 };