spapr-vty: Use TYPE_ definition instead of hardcoding

[qemu.git] / hw / char / sclpconsole.c

diff --git a/hw/char/sclpconsole.c b/hw/char/sclpconsole.c
index fca105db4ea53679710b24ccf4c63decdb650c39..b014c7f5228876f5cd2f675827a5424ed96f6902 100644 (file)
--- a/hw/char/sclpconsole.c
+++ b/hw/char/sclpconsole.c
@@ -36,6 +36,7 @@ typedef struct SCLPConsole {
     uint32_t iov_bs;        /* offset in buf for char layer read operation */
     uint32_t iov_data_len;  /* length of byte stream in buffer             */
     uint32_t iov_sclp_rest; /* length of byte stream not read via SCLP     */
+    bool notify;            /* qemu_notify_event() req'd if true           */
 } SCLPConsole;
 
 /* character layer call-back functions */
@@ -44,8 +45,12 @@ typedef struct SCLPConsole {
 static int chr_can_read(void *opaque)
 {
     SCLPConsole *scon = opaque;
+    int avail = SIZE_BUFFER_VT220 - scon->iov_data_len;
 
-    return SIZE_BUFFER_VT220 - scon->iov_data_len;
+    if (avail == 0) {
+        scon->notify = true;
+    }
+    return avail;
 }
 
 /* Send data from a char device over to the guest */
@@ -113,6 +118,10 @@ static void get_console_data(SCLPEvent *event, uint8_t *buf, size_t *size,
         cons->iov_sclp += avail;
         /* more data pending */
     }
+    if (cons->notify) {
+        cons->notify = false;
+        qemu_notify_event();
+    }
 }
 
 static int read_event_data(SCLPEvent *event, EventBufferHeader *evt_buf_hdr,
@@ -229,6 +238,7 @@ static void console_reset(DeviceState *dev)
    scon->iov_bs = 0;
    scon->iov_data_len = 0;
    scon->iov_sclp_rest = 0;
+   scon->notify = false;
 }
 
 static int console_exit(SCLPEvent *event)
@@ -256,6 +266,7 @@ static void console_class_init(ObjectClass *klass, void *data)
     ec->can_handle_event = can_handle_event;
     ec->read_event_data = read_event_data;
     ec->write_event_data = write_event_data;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 }
 
 static const TypeInfo sclp_console_info = {