Mailing List Archive

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>
---
hw/serial.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/hw/serial.c b/hw/serial.c
index d35c7a9..96ac7c1 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();
+ }
if(s->fcr & UART_FCR_FE) {
int i;
for (i = 0; i < size; i++) {
@@ -889,6 +894,7 @@ static ISADeviceInfo serial_isa_info = {
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(),
},
};
--
1.7.1


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