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pseries: Make the PAPR RTC a qdev device

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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>
This commit is contained in:
David Gibson 2015-02-06 14:55:51 +11:00 • committed by Alexander Graf
parent f01c5d8477
commit 28df36a13a
4 changed files with 61 additions and 7 deletions
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10
hw/ppc/spapr.c
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@ -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();