[Qemu-devel] [rfc patch qemu 3/4] wakeup: make serial configurable

[Gerd Hoffmann <kraxel@redhat.com>]

serial port #1 gets gpe 0x0a.  Now that the wakeup is guest-configurable
via acpi we also enable it unconditionally.

Other serial ports are unchanged: they continue to use the "other" exit
reason and are disabled unless explicitly enabled via wakeup property.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/serial.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/hw/serial.c b/hw/serial.c
index a421d1e..06f7e28 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -140,6 +140,7 @@ struct SerialState {
     int baudbase;
     int tsr_retry;
     uint32_t wakeup;
+    WakeupReason reason;
 
     uint64_t last_xmit_ts;              /* Time when the last byte was successfully sent out of the tsr */
     SerialFIFO recv_fifo;
@@ -641,7 +642,7 @@ 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);
+        qemu_system_wakeup_request(s->reason);
     }
     if(s->fcr & UART_FCR_FE) {
         int i;
@@ -789,6 +790,13 @@ static int serial_isa_initfn(ISADevice *dev)
         isa->isairq = isa_serial_irq[isa->index];
     index++;
 
+    if (isa->iobase == 0x3f8) {
+        s->reason = QEMU_WAKEUP_REASON_GPE_a;
+        s->wakeup = 1;
+    } else {
+        s->reason = QEMU_WAKEUP_REASON_OTHER;
+    }
+
     s->baudbase = 115200;
     isa_init_irq(dev, &s->irq, isa->isairq);
     serial_init_core(s);
-- 
1.7.1