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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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7
include/hw/ppc/spapr.h
View file

@ -15,6 +15,7 @@ typedef struct sPAPREnvironment {
QLIST_HEAD(, sPAPRPHBState) phbs;
struct sPAPRNVRAM *nvram;
XICSState *icp;
DeviceState *rtc;
hwaddr ram_limit;
void *htab;
@ -480,7 +481,9 @@ int spapr_dma_dt(void *fdt, int node_off, const char *propname,
uint32_t liobn, uint64_t window, uint32_t size);
int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
sPAPRTCETable *tcet);
void spapr_rtc_init(void);
void spapr_rtc_read(sPAPREnvironment *spapr, struct tm *tm, uint32_t *ns);
#define TYPE_SPAPR_RTC "spapr-rtc"
void spapr_rtc_read(DeviceState *dev, struct tm *tm, uint32_t *ns);
#endif /* !defined (__HW_SPAPR_H__) */