static void realize(DeviceState *d, Error **errp) { sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); Object *root_container; char link_name[256]; gchar *child_name; Error *err = NULL; DPRINTFN("drc realize: %x", drck->get_index(drc)); /* NOTE: we do this as part of realize/unrealize due to the fact * that the guest will communicate with the DRC via RTAS calls * referencing the global DRC index. By unlinking the DRC * from DRC_CONTAINER_PATH/<drc_index> we effectively make it * inaccessible by the guest, since lookups rely on this path * existing in the composition tree */ root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); snprintf(link_name, sizeof(link_name), "%x", drck->get_index(drc)); child_name = object_get_canonical_path_component(OBJECT(drc)); DPRINTFN("drc child name: %s", child_name); object_property_add_alias(root_container, link_name, drc->owner, child_name, &err); if (err) { error_report("%s", error_get_pretty(err)); error_free(err); object_unref(OBJECT(drc)); } g_free(child_name); DPRINTFN("drc realize complete"); }
static void reset(DeviceState *d) { sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); DPRINTFN("drc reset: %x", drck->get_index(drc)); /* immediately upon reset we can safely assume DRCs whose devices * are pending removal can be safely removed, and that they will * subsequently be left in an ISOLATED state. move the DRC to this * state in these cases (which will in turn complete any pending * device removals) */ if (drc->awaiting_release) { drck->set_isolation_state(drc, SPAPR_DR_ISOLATION_STATE_ISOLATED); /* generally this should also finalize the removal, but if the device * hasn't yet been configured we normally defer removal under the * assumption that this transition is taking place as part of device * configuration. so check if we're still waiting after this, and * force removal if we are */ if (drc->awaiting_release) { drck->detach(drc, DEVICE(drc->dev), drc->detach_cb, drc->detach_cb_opaque, NULL); } /* non-PCI devices may be awaiting a transition to UNUSABLE */ if (drc->type != SPAPR_DR_CONNECTOR_TYPE_PCI && drc->awaiting_release) { drck->set_allocation_state(drc, SPAPR_DR_ALLOCATION_STATE_UNUSABLE); } } }
static uint32_t set_allocation_state(sPAPRDRConnector *drc, sPAPRDRAllocationState state) { sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); DPRINTFN("drc: %x, set_allocation_state: %x", get_index(drc), state); if (state == SPAPR_DR_ALLOCATION_STATE_USABLE) { /* if there's no resource/device associated with the DRC, there's * no way for us to put it in an allocation state consistent with * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should * result in an RTAS return code of -3 / "no such indicator" */ if (!drc->dev) { return RTAS_OUT_NO_SUCH_INDICATOR; } } if (drc->type != SPAPR_DR_CONNECTOR_TYPE_PCI) { drc->allocation_state = state; if (drc->awaiting_release && drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { DPRINTFN("finalizing device removal"); drck->detach(drc, DEVICE(drc->dev), drc->detach_cb, drc->detach_cb_opaque, NULL); } } return RTAS_OUT_SUCCESS; }
static void prop_get_type(Object *obj, Visitor *v, void *opaque, const char *name, Error **errp) { sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); uint32_t value = (uint32_t)drck->get_type(drc); visit_type_uint32(v, &value, name, errp); }
static void unrealize(DeviceState *d, Error **errp) { sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); Object *root_container; char name[256]; Error *err = NULL; DPRINTFN("drc unrealize: %x", drck->get_index(drc)); root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); snprintf(name, sizeof(name), "%x", drck->get_index(drc)); object_property_del(root_container, name, &err); if (err) { error_report_err(err); object_unref(OBJECT(drc)); } }
static uint32_t set_isolation_state(sPAPRDRConnector *drc, sPAPRDRIsolationState state) { sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); DPRINTFN("drc: %x, set_isolation_state: %x", get_index(drc), state); if (state == SPAPR_DR_ISOLATION_STATE_UNISOLATED) { /* cannot unisolate a non-existant resource, and, or resources * which are in an 'UNUSABLE' allocation state. (PAPR 2.7, 13.5.3.5) */ if (!drc->dev || drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { return RTAS_OUT_NO_SUCH_INDICATOR; } } drc->isolation_state = state; if (drc->isolation_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { /* if we're awaiting release, but still in an unconfigured state, * it's likely the guest is still in the process of configuring * the device and is transitioning the devices to an ISOLATED * state as a part of that process. so we only complete the * removal when this transition happens for a device in a * configured state, as suggested by the state diagram from * PAPR+ 2.7, 13.4 */ if (drc->awaiting_release) { if (drc->configured) { DPRINTFN("finalizing device removal"); drck->detach(drc, DEVICE(drc->dev), drc->detach_cb, drc->detach_cb_opaque, NULL); } else { DPRINTFN("deferring device removal on unconfigured device\n"); } } drc->configured = false; } return RTAS_OUT_SUCCESS; }
/** * spapr_drc_populate_dt * * @fdt: libfdt device tree * @path: path in the DT to generate properties * @owner: parent Object/DeviceState for which to generate DRC * descriptions for * @drc_type_mask: mask of sPAPRDRConnectorType values corresponding * to the types of DRCs to generate entries for * * generate OF properties to describe DRC topology/indices to guests * * as documented in PAPR+ v2.1, 13.5.2 */ int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner, uint32_t drc_type_mask) { Object *root_container; ObjectProperty *prop; ObjectPropertyIterator *iter; uint32_t drc_count = 0; GArray *drc_indexes, *drc_power_domains; GString *drc_names, *drc_types; int ret; /* the first entry of each properties is a 32-bit integer encoding * the number of elements in the array. we won't know this until * we complete the iteration through all the matching DRCs, but * reserve the space now and set the offsets accordingly so we * can fill them in later. */ drc_indexes = g_array_new(false, true, sizeof(uint32_t)); drc_indexes = g_array_set_size(drc_indexes, 1); drc_power_domains = g_array_new(false, true, sizeof(uint32_t)); drc_power_domains = g_array_set_size(drc_power_domains, 1); drc_names = g_string_set_size(g_string_new(NULL), sizeof(uint32_t)); drc_types = g_string_set_size(g_string_new(NULL), sizeof(uint32_t)); /* aliases for all DRConnector objects will be rooted in QOM * composition tree at DRC_CONTAINER_PATH */ root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); iter = object_property_iter_init(root_container); while ((prop = object_property_iter_next(iter))) { Object *obj; sPAPRDRConnector *drc; sPAPRDRConnectorClass *drck; uint32_t drc_index, drc_power_domain; if (!strstart(prop->type, "link<", NULL)) { continue; } obj = object_property_get_link(root_container, prop->name, NULL); drc = SPAPR_DR_CONNECTOR(obj); drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); if (owner && (drc->owner != owner)) { continue; } if ((drc->type & drc_type_mask) == 0) { continue; } drc_count++; /* ibm,drc-indexes */ drc_index = cpu_to_be32(drck->get_index(drc)); g_array_append_val(drc_indexes, drc_index); /* ibm,drc-power-domains */ drc_power_domain = cpu_to_be32(-1); g_array_append_val(drc_power_domains, drc_power_domain); /* ibm,drc-names */ drc_names = g_string_append(drc_names, drck->get_name(drc)); drc_names = g_string_insert_len(drc_names, -1, "\0", 1); /* ibm,drc-types */ drc_types = g_string_append(drc_types, spapr_drc_get_type_str(drc->type)); drc_types = g_string_insert_len(drc_types, -1, "\0", 1); } object_property_iter_free(iter); /* now write the drc count into the space we reserved at the * beginning of the arrays previously */ *(uint32_t *)drc_indexes->data = cpu_to_be32(drc_count); *(uint32_t *)drc_power_domains->data = cpu_to_be32(drc_count); *(uint32_t *)drc_names->str = cpu_to_be32(drc_count); *(uint32_t *)drc_types->str = cpu_to_be32(drc_count); ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-indexes", drc_indexes->data, drc_indexes->len * sizeof(uint32_t)); if (ret) { fprintf(stderr, "Couldn't create ibm,drc-indexes property\n"); goto out; } ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-power-domains", drc_power_domains->data, drc_power_domains->len * sizeof(uint32_t)); if (ret) { fprintf(stderr, "Couldn't finalize ibm,drc-power-domains property\n"); goto out; } ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-names", drc_names->str, drc_names->len); if (ret) { fprintf(stderr, "Couldn't finalize ibm,drc-names property\n"); goto out; } ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-types", drc_types->str, drc_types->len); if (ret) { fprintf(stderr, "Couldn't finalize ibm,drc-types property\n"); goto out; } out: g_array_free(drc_indexes, true); g_array_free(drc_power_domains, true); g_string_free(drc_names, true); g_string_free(drc_types, true); return ret; }
static char *prop_get_name(Object *obj, Error **errp) { sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); return g_strdup(drck->get_name(drc)); }