{
RTE_VERIFY(bus);
RTE_VERIFY(bus->name && strlen(bus->name));
+ /* A bus should mandatorily have the scan implemented */
+ RTE_VERIFY(bus->scan);
+ RTE_VERIFY(bus->probe);
+ RTE_VERIFY(bus->find_device);
+ /* Buses supporting driver plug also require unplug. */
+ RTE_VERIFY(!bus->plug || bus->unplug);
TAILQ_INSERT_TAIL(&rte_bus_list, bus, next);
RTE_LOG(DEBUG, EAL, "Registered [%s] bus.\n", bus->name);
RTE_LOG(DEBUG, EAL, "Unregistered [%s] bus.\n", bus->name);
}
+/* Scan all the buses for registered devices */
+int
+rte_bus_scan(void)
+{
+ int ret;
+ struct rte_bus *bus = NULL;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ ret = bus->scan();
+ if (ret) {
+ RTE_LOG(ERR, EAL, "Scan for (%s) bus failed.\n",
+ bus->name);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+/* Probe all devices of all buses */
+int
+rte_bus_probe(void)
+{
+ int ret;
+ struct rte_bus *bus, *vbus = NULL;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ if (!strcmp(bus->name, "vdev")) {
+ vbus = bus;
+ continue;
+ }
+
+ ret = bus->probe();
+ if (ret) {
+ RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
+ bus->name);
+ return ret;
+ }
+ }
+
+ if (vbus) {
+ ret = vbus->probe();
+ if (ret) {
+ RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
+ vbus->name);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
/* Dump information of a single bus */
static int
bus_dump_one(FILE *f, struct rte_bus *bus)
}
}
}
+
+struct rte_bus *
+rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
+ const void *data)
+{
+ struct rte_bus *bus = NULL;
+
+ TAILQ_FOREACH(bus, &rte_bus_list, next) {
+ if (start && bus == start) {
+ start = NULL; /* starting point found */
+ continue;
+ }
+ if (cmp(bus, data) == 0)
+ break;
+ }
+ return bus;
+}
+
+static int
+cmp_rte_device(const struct rte_device *dev1, const void *_dev2)
+{
+ const struct rte_device *dev2 = _dev2;
+
+ return dev1 != dev2;
+}
+
+static int
+bus_find_device(const struct rte_bus *bus, const void *_dev)
+{
+ struct rte_device *dev;
+
+ dev = bus->find_device(NULL, cmp_rte_device, _dev);
+ return dev == NULL;
+}
+
+struct rte_bus *
+rte_bus_find_by_device(const struct rte_device *dev)
+{
+ return rte_bus_find(NULL, bus_find_device, (const void *)dev);
+}
+
+static int
+cmp_bus_name(const struct rte_bus *bus, const void *_name)
+{
+ const char *name = _name;
+
+ return strcmp(bus->name, name);
+}
+
+struct rte_bus *
+rte_bus_find_by_name(const char *busname)
+{
+ return rte_bus_find(NULL, cmp_bus_name, (const void *)busname);
+}