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spapr: Clean up DR entity sense handling

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DRC classes have an entity_sense method to determine (in a specific PAPR
sense) the presence or absence of a device plugged into a DRC.  However,
we only have one implementation of the method, which explicitly tests for
different DRC types.  This changes it to instead have different method
implementations for the two cases: "logical" and "physical" DRCs.

While we're at it, the entity sense method always returns RTAS_OUT_SUCCESS,
and the interesting value is returned via pass-by-reference.  Simplify this
to directly return the value we care about

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
David Gibson 2017-06-07 11:26:52 +10:00
parent 2c5534776b
commit f224d35be9
4 changed files with 41 additions and 44 deletions
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4
include/hw/ppc/spapr_drc.h
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@ -214,6 +214,8 @@ typedef struct sPAPRDRConnectorClass {
sPAPRDRConnectorTypeShift typeshift;
const char *typename; /* used in device tree, PAPR 13.5.2.6 & C.6.1 */
sPAPRDREntitySense (*dr_entity_sense)(sPAPRDRConnector *drc);
/* accessors for guest-visible (generally via RTAS) DR state */
uint32_t (*set_isolation_state)(sPAPRDRConnector *drc,
sPAPRDRIsolationState state);
@ -223,8 +225,6 @@ typedef struct sPAPRDRConnectorClass {
sPAPRDRAllocationState state);
const char *(*get_name)(sPAPRDRConnector *drc);
uint32_t (*entity_sense)(sPAPRDRConnector *drc, sPAPRDREntitySense *state);
/* QEMU interfaces for managing hotplug operations */
void (*attach)(sPAPRDRConnector *drc, DeviceState *d, void *fdt,
int fdt_start_offset, bool coldplug, Error **errp);