[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 5/6] 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@xxxxxxxxxx> --- 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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