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authorGerd Hoffmann <kraxel@redhat.com>2012-02-23 13:45:23 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2012-02-24 13:36:03 -0600
commit9826fd597df59a8bac7beafd192e4baad790c31a (patch)
treee7f25ee4e14c810c39c4d06d3ad050a79f3092b8
parentfd214d1828bf467d16251abce1747ffce932531f (diff)
suspend: make serial ports wakeup the guest.
Add a 'wakeup' property to the serial port. It is off by default. When enabled any incoming character on the serial line will wake up the guest. Useful for guests which have a serial console configured. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
-rw-r--r--hw/serial.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/serial.c b/hw/serial.c
index 144d1b3526..c0ee55d20c 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -139,6 +139,7 @@ struct SerialState {
int it_shift;
int baudbase;
int tsr_retry;
+ uint32_t wakeup;
uint64_t last_xmit_ts; /* Time when the last byte was successfully sent out of the tsr */
SerialFIFO recv_fifo;
@@ -635,6 +636,10 @@ static int serial_can_receive1(void *opaque)
static void serial_receive1(void *opaque, const uint8_t *buf, int size)
{
SerialState *s = opaque;
+
+ if (s->wakeup) {
+ qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
+ }
if(s->fcr & UART_FCR_FE) {
int i;
for (i = 0; i < size; i++) {
@@ -884,6 +889,7 @@ static Property serial_isa_properties[] = {
DEFINE_PROP_HEX32("iobase", ISASerialState, iobase, -1),
DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1),
DEFINE_PROP_CHR("chardev", ISASerialState, state.chr),
+ DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0),
DEFINE_PROP_END_OF_LIST(),
};