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authorAmit Shah <amit.shah@redhat.com>2010-01-21 15:43:26 +0530
committerAnthony Liguori <aliguori@us.ibm.com>2010-01-26 15:42:02 -0600
commit4c36a2ffac3a14e57fe44718010601fbcef228c1 (patch)
treef4ab6047324df65cf7d15ce1ecb3ade2debd8b69 /hw/virtio-console.c
parent3c089e15b6b92894e43c02b3ae87232e4b8cab45 (diff)
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virtio-console: Rename virtio-serial.c back to virtio-console.c
This file was renamed to ease the reviews of the recent changes that went in. Now that the changes are done, rename the file back to its original name. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/virtio-console.c')
-rw-r--r--hw/virtio-console.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
new file mode 100644
index 0000000..bd44ec6
--- /dev/null
+++ b/hw/virtio-console.c
@@ -0,0 +1,146 @@
+/*
+ * Virtio Console and Generic Serial Port Devices
+ *
+ * Copyright Red Hat, Inc. 2009
+ *
+ * Authors:
+ * Amit Shah <amit.shah@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "qemu-char.h"
+#include "virtio-serial.h"
+
+typedef struct VirtConsole {
+ VirtIOSerialPort port;
+ CharDriverState *chr;
+} VirtConsole;
+
+
+/* Callback function that's called when the guest sends us data */
+static size_t flush_buf(VirtIOSerialPort *port, const uint8_t *buf, size_t len)
+{
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+ ssize_t ret;
+
+ ret = qemu_chr_write(vcon->chr, buf, len);
+
+ return ret < 0 ? 0 : ret;
+}
+
+/* Readiness of the guest to accept data on a port */
+static int chr_can_read(void *opaque)
+{
+ VirtConsole *vcon = opaque;
+
+ return virtio_serial_guest_ready(&vcon->port);
+}
+
+/* Send data from a char device over to the guest */
+static void chr_read(void *opaque, const uint8_t *buf, int size)
+{
+ VirtConsole *vcon = opaque;
+
+ virtio_serial_write(&vcon->port, buf, size);
+}
+
+static void chr_event(void *opaque, int event)
+{
+ VirtConsole *vcon = opaque;
+
+ switch (event) {
+ case CHR_EVENT_OPENED: {
+ virtio_serial_open(&vcon->port);
+ break;
+ }
+ case CHR_EVENT_CLOSED:
+ virtio_serial_close(&vcon->port);
+ break;
+ }
+}
+
+/* Virtio Console Ports */
+static int virtconsole_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ port->is_console = true;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static int virtconsole_exitfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ if (vcon->chr) {
+ port->info->have_data = NULL;
+ qemu_chr_close(vcon->chr);
+ }
+
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtconsole_info = {
+ .qdev.name = "virtconsole",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtconsole_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1),
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtconsole_register(void)
+{
+ virtio_serial_port_qdev_register(&virtconsole_info);
+}
+device_init(virtconsole_register)
+
+/* Generic Virtio Serial Ports */
+static int virtserialport_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtserialport_info = {
+ .qdev.name = "virtserialport",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtserialport_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtserialport_register(void)
+{
+ virtio_serial_port_qdev_register(&virtserialport_info);
+}
+device_init(virtserialport_register)