diff options
| -rw-r--r-- | hw/ppc/spapr_drc.c | 45 | ||||
| -rw-r--r-- | hw/ppc/spapr_events.c | 10 | ||||
| -rw-r--r-- | include/hw/ppc/spapr_drc.h | 2 |
3 files changed, 1 insertions, 56 deletions
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 91fc08d..21f5bf1 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -172,12 +172,6 @@ static const char *spapr_drc_name(sPAPRDRConnector *drc) return g_strdup_printf("%s%d", drck->drc_name_prefix, drc->id); } -/* has the guest been notified of device attachment? */ -static void set_signalled(sPAPRDRConnector *drc) -{ - drc->signalled = true; -} - /* * dr-entity-sense sensor value * returned via get-sensor-state RTAS calls @@ -310,17 +304,6 @@ void spapr_drc_attach(sPAPRDRConnector *drc, DeviceState *d, void *fdt, drc->fdt = fdt; drc->fdt_start_offset = fdt_start_offset; drc->configured = coldplug; - /* 'logical' DR resources such as memory/cpus are in some cases treated - * as a pool of resources from which the guest is free to choose from - * based on only a count. for resources that can be assigned in this - * fashion, we must assume the resource is signalled immediately - * since a single hotplug request might make an arbitrary number of - * such attached resources available to the guest, as opposed to - * 'physical' DR resources such as PCI where each device/resource is - * signalled individually. - */ - drc->signalled = (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI) - ? true : coldplug; if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI) { drc->awaiting_allocation = true; @@ -336,26 +319,6 @@ void spapr_drc_detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp) { trace_spapr_drc_detach(spapr_drc_index(drc)); - /* if we've signalled device presence to the guest, or if the guest - * has gone ahead and configured the device (via manually-executed - * device add via drmgr in guest, namely), we need to wait - * for the guest to quiesce the device before completing detach. - * Otherwise, we can assume the guest hasn't seen it and complete the - * detach immediately. Note that there is a small race window - * just before, or during, configuration, which is this context - * refers mainly to fetching the device tree via RTAS. - * During this window the device access will be arbitrated by - * associated DRC, which will simply fail the RTAS calls as invalid. - * This is recoverable within guest and current implementations of - * drmgr should be able to cope. - */ - if (!drc->signalled && !drc->configured) { - /* if the guest hasn't seen the device we can't rely on it to - * set it back to an isolated state via RTAS, so do it here manually - */ - drc->isolation_state = SPAPR_DR_ISOLATION_STATE_ISOLATED; - } - if (drc->isolation_state != SPAPR_DR_ISOLATION_STATE_ISOLATED) { trace_spapr_drc_awaiting_isolated(spapr_drc_index(drc)); drc->awaiting_release = true; @@ -441,10 +404,6 @@ static void reset(DeviceState *d) drck->set_allocation_state(drc, SPAPR_DR_ALLOCATION_STATE_UNUSABLE); } } - - if (drck->dr_entity_sense(drc) == SPAPR_DR_ENTITY_SENSE_PRESENT) { - drck->set_signalled(drc); - } } static bool spapr_drc_needed(void *opaque) @@ -469,7 +428,7 @@ static bool spapr_drc_needed(void *opaque) case SPAPR_DR_CONNECTOR_TYPE_LMB: rc = !((drc->isolation_state == SPAPR_DR_ISOLATION_STATE_UNISOLATED) && (drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE) && - drc->configured && drc->signalled && !drc->awaiting_release); + drc->configured && !drc->awaiting_release); break; case SPAPR_DR_CONNECTOR_TYPE_PHB: case SPAPR_DR_CONNECTOR_TYPE_VIO: @@ -491,7 +450,6 @@ static const VMStateDescription vmstate_spapr_drc = { VMSTATE_BOOL(configured, sPAPRDRConnector), VMSTATE_BOOL(awaiting_release, sPAPRDRConnector), VMSTATE_BOOL(awaiting_allocation, sPAPRDRConnector), - VMSTATE_BOOL(signalled, sPAPRDRConnector), VMSTATE_END_OF_LIST() } }; @@ -589,7 +547,6 @@ static void spapr_dr_connector_class_init(ObjectClass *k, void *data) drck->set_isolation_state = set_isolation_state; drck->set_allocation_state = set_allocation_state; drck->release_pending = release_pending; - drck->set_signalled = set_signalled; /* * Reason: it crashes FIXME find and document the real reason */ diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 171aedc..587a3da 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -475,13 +475,6 @@ static void spapr_powerdown_req(Notifier *n, void *opaque) RTAS_LOG_TYPE_EPOW))); } -static void spapr_hotplug_set_signalled(uint32_t drc_index) -{ - sPAPRDRConnector *drc = spapr_drc_by_index(drc_index); - sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); - drck->set_signalled(drc); -} - static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, sPAPRDRConnectorType drc_type, union drc_identifier *drc_id) @@ -528,9 +521,6 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, switch (drc_type) { case SPAPR_DR_CONNECTOR_TYPE_PCI: hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; - if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) { - spapr_hotplug_set_signalled(drc_id->index); - } break; case SPAPR_DR_CONNECTOR_TYPE_LMB: hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; diff --git a/include/hw/ppc/spapr_drc.h b/include/hw/ppc/spapr_drc.h index bc9f988..388e2a6 100644 --- a/include/hw/ppc/spapr_drc.h +++ b/include/hw/ppc/spapr_drc.h @@ -199,7 +199,6 @@ typedef struct sPAPRDRConnector { sPAPRConfigureConnectorState *ccs; bool awaiting_release; - bool signalled; bool awaiting_allocation; /* device pointer, via link property */ @@ -225,7 +224,6 @@ typedef struct sPAPRDRConnectorClass { /* QEMU interfaces for managing hotplug operations */ bool (*release_pending)(sPAPRDRConnector *drc); - void (*set_signalled)(sPAPRDRConnector *drc); } sPAPRDRConnectorClass; uint32_t spapr_drc_index(sPAPRDRConnector *drc); |