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35 #include <sys/queue.h>
39 #include "eal_private.h"
41 struct rte_bus_list rte_bus_list =
42 TAILQ_HEAD_INITIALIZER(rte_bus_list);
45 rte_bus_register(struct rte_bus *bus)
48 RTE_VERIFY(bus->name && strlen(bus->name));
49 /* A bus should mandatorily have the scan implemented */
50 RTE_VERIFY(bus->scan);
51 RTE_VERIFY(bus->probe);
52 RTE_VERIFY(bus->find_device);
53 /* Buses supporting driver plug also require unplug. */
54 RTE_VERIFY(!bus->plug || bus->unplug);
56 TAILQ_INSERT_TAIL(&rte_bus_list, bus, next);
57 RTE_LOG(DEBUG, EAL, "Registered [%s] bus.\n", bus->name);
61 rte_bus_unregister(struct rte_bus *bus)
63 TAILQ_REMOVE(&rte_bus_list, bus, next);
64 RTE_LOG(DEBUG, EAL, "Unregistered [%s] bus.\n", bus->name);
67 /* Scan all the buses for registered devices */
72 struct rte_bus *bus = NULL;
74 TAILQ_FOREACH(bus, &rte_bus_list, next) {
77 RTE_LOG(ERR, EAL, "Scan for (%s) bus failed.\n",
86 /* Probe all devices of all buses */
91 struct rte_bus *bus, *vbus = NULL;
93 TAILQ_FOREACH(bus, &rte_bus_list, next) {
94 if (!strcmp(bus->name, "vdev")) {
101 RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
110 RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
119 /* Dump information of a single bus */
121 bus_dump_one(FILE *f, struct rte_bus *bus)
125 /* For now, dump only the bus name */
126 ret = fprintf(f, " %s\n", bus->name);
128 /* Error in case of inability in writing to stream */
136 rte_bus_dump(FILE *f)
141 TAILQ_FOREACH(bus, &rte_bus_list, next) {
142 ret = bus_dump_one(f, bus);
144 RTE_LOG(ERR, EAL, "Unable to write to stream (%d)\n",
152 rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
155 struct rte_bus *bus = NULL;
157 TAILQ_FOREACH(bus, &rte_bus_list, next) {
158 if (start && bus == start) {
159 start = NULL; /* starting point found */
162 if (cmp(bus, data) == 0)
169 cmp_rte_device(const struct rte_device *dev1, const void *_dev2)
171 const struct rte_device *dev2 = _dev2;
177 bus_find_device(const struct rte_bus *bus, const void *_dev)
179 struct rte_device *dev;
181 dev = bus->find_device(NULL, cmp_rte_device, _dev);
186 rte_bus_find_by_device(const struct rte_device *dev)
188 return rte_bus_find(NULL, bus_find_device, (const void *)dev);
192 cmp_bus_name(const struct rte_bus *bus, const void *_name)
194 const char *name = _name;
196 return strcmp(bus->name, name);
200 rte_bus_find_by_name(const char *busname)
202 return rte_bus_find(NULL, cmp_bus_name, (const void *)busname);
206 bus_can_parse(const struct rte_bus *bus, const void *_name)
208 const char *name = _name;
210 return !(bus->parse && bus->parse(name, NULL) == 0);
214 rte_bus_find_by_device_name(const char *str)
216 char name[RTE_DEV_NAME_MAX_LEN];
219 snprintf(name, sizeof(name), "%s", str);
220 c = strchr(name, ',');
223 return rte_bus_find(NULL, bus_can_parse, name);