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 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);
}
sPAPRDRConnector *spapr_dr_connector_by_index(uint32_t index)
{
Object *obj;
char name[256];
snprintf(name, sizeof(name), "%s/%x", DRC_CONTAINER_PATH, index);
obj = object_resolve_path(name, NULL);
return !obj ? NULL : SPAPR_DR_CONNECTOR(obj);
}
static void prop_get_fdt(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj);
int fdt_offset_next, fdt_offset, fdt_depth;
void *fdt;
if (!drc->fdt) {
return;
}
fdt = drc->fdt;
fdt_offset = drc->fdt_start_offset;
fdt_depth = 0;
do {
const char *name = NULL;
const struct fdt_property *prop = NULL;
int prop_len = 0, name_len = 0;
uint32_t tag;
tag = fdt_next_tag(fdt, fdt_offset, &fdt_offset_next);
switch (tag) {
case FDT_BEGIN_NODE:
fdt_depth++;
name = fdt_get_name(fdt, fdt_offset, &name_len);
visit_start_struct(v, NULL, NULL, name, 0, NULL);
break;
case FDT_END_NODE:
/* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */
g_assert(fdt_depth > 0);
visit_end_struct(v, NULL);
fdt_depth--;
break;
case FDT_PROP: {
int i;
prop = fdt_get_property_by_offset(fdt, fdt_offset, &prop_len);
name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
visit_start_list(v, name, NULL);
for (i = 0; i < prop_len; i++) {
visit_type_uint8(v, (uint8_t *)&prop->data[i], NULL, NULL);
}
visit_end_list(v, NULL);
break;
}
default:
error_setg(&error_abort, "device FDT in unexpected state: %d", tag);
}
fdt_offset = fdt_offset_next;
} while (fdt_depth != 0);
}
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 void spapr_dr_connector_instance_init(Object *obj)
{
sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj);
object_property_add_uint32_ptr(obj, "isolation-state",
&drc->isolation_state, NULL);
object_property_add_uint32_ptr(obj, "indicator-state",
&drc->indicator_state, NULL);
object_property_add_uint32_ptr(obj, "allocation-state",
&drc->allocation_state, NULL);
object_property_add_uint32_ptr(obj, "id", &drc->id, NULL);
object_property_add(obj, "index", "uint32", prop_get_index,
NULL, NULL, NULL, NULL);
object_property_add(obj, "connector_type", "uint32", prop_get_type,
NULL, NULL, NULL, NULL);
object_property_add_str(obj, "name", prop_get_name, NULL, NULL);
object_property_add(obj, "entity-sense", "uint32", prop_get_entity_sense,
NULL, NULL, NULL, NULL);
object_property_add(obj, "fdt", "struct", prop_get_fdt,
NULL, NULL, NULL, NULL);
}
/**
* 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;
}
sPAPRDRConnector *spapr_dr_connector_new(Object *owner,
sPAPRDRConnectorType type,
uint32_t id)
{
sPAPRDRConnector *drc =
SPAPR_DR_CONNECTOR(object_new(TYPE_SPAPR_DR_CONNECTOR));
char *prop_name;
g_assert(type);
drc->type = type;
drc->id = id;
drc->owner = owner;
prop_name = g_strdup_printf("dr-connector[%"PRIu32"]", get_index(drc));
object_property_add_child(owner, prop_name, OBJECT(drc), NULL);
object_property_set_bool(OBJECT(drc), true, "realized", NULL);
g_free(prop_name);
/* human-readable name for a DRC to encode into the DT
* description. this is mainly only used within a guest in place
* of the unique DRC index.
*
* in the case of VIO/PCI devices, it corresponds to a
* "location code" that maps a logical device/function (DRC index)
* to a physical (or virtual in the case of VIO) location in the
* system by chaining together the "location label" for each
* encapsulating component.
*
* since this is more to do with diagnosing physical hardware
* issues than guest compatibility, we choose location codes/DRC
* names that adhere to the documented format, but avoid encoding
* the entire topology information into the label/code, instead
* just using the location codes based on the labels for the
* endpoints (VIO/PCI adaptor connectors), which is basically
* just "C" followed by an integer ID.
*
* DRC names as documented by PAPR+ v2.7, 13.5.2.4
* location codes as documented by PAPR+ v2.7, 12.3.1.5
*/
switch (drc->type) {
case SPAPR_DR_CONNECTOR_TYPE_CPU:
drc->name = g_strdup_printf("CPU %d", id);
break;
case SPAPR_DR_CONNECTOR_TYPE_PHB:
drc->name = g_strdup_printf("PHB %d", id);
break;
case SPAPR_DR_CONNECTOR_TYPE_VIO:
case SPAPR_DR_CONNECTOR_TYPE_PCI:
drc->name = g_strdup_printf("C%d", id);
break;
case SPAPR_DR_CONNECTOR_TYPE_LMB:
drc->name = g_strdup_printf("LMB %d", id);
break;
default:
g_assert(false);
}
/* PCI slot always start in a USABLE state, and stay there */
if (drc->type == SPAPR_DR_CONNECTOR_TYPE_PCI) {
drc->allocation_state = SPAPR_DR_ALLOCATION_STATE_USABLE;
}
return drc;
}
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));
}
