pseries: Make the PAPR RTC a qdev device

At present the PAPR RTC isn't a "device" as such - it's accessed only via
firmware/hypervisor calls, and is handled in the sPAPR core code.  This
becomes inconvenient as we extend it in various ways.

This patch makes the PAPR RTC a separate device in the qemu device model.

For now, the only piece of device state - the rtc_offset - is still kept in
the global sPAPREnvironment structure.  That's clearly wrong, but leaving
it to be fixed in a following patch makes for a clearer separation between
the internal re-organization of the device, and the behavioural changes
(because the migration stream format needs to change slightly when the
offset is moved into the device's own state).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 9 insertions, 1 deletions

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index cb0e54b69e..1908988dbc 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -994,6 +994,14 @@ static void spapr_create_nvram(sPAPREnvironment *spapr)
     spapr->nvram = (struct sPAPRNVRAM *)dev;
 }
 
+static void spapr_rtc_create(sPAPREnvironment *spapr)
+{
+    DeviceState *dev = qdev_create(NULL, TYPE_SPAPR_RTC);
+
+    qdev_init_nofail(dev);
+    spapr->rtc = dev;
+}
+
 /* Returns whether we want to use VGA or not */
 static int spapr_vga_init(PCIBus *pci_bus)
 {
@@ -1492,7 +1500,7 @@ static void ppc_spapr_init(MachineState *machine)
     spapr_events_init(spapr);
 
     /* Set up the RTC RTAS interfaces */
-    spapr_rtc_init();
+    spapr_rtc_create(spapr);
 
     /* Set up VIO bus */
     spapr->vio_bus = spapr_vio_bus_init();