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36 #include <sys/queue.h>
40 #include "eal_private.h"
42 struct rte_bus_list rte_bus_list =
43 TAILQ_HEAD_INITIALIZER(rte_bus_list);
46 rte_bus_register(struct rte_bus *bus)
49 RTE_VERIFY(bus->name && strlen(bus->name));
50 /* A bus should mandatorily have the scan implemented */
51 RTE_VERIFY(bus->scan);
52 RTE_VERIFY(bus->probe);
53 RTE_VERIFY(bus->find_device);
54 /* Buses supporting driver plug also require unplug. */
55 RTE_VERIFY(!bus->plug || bus->unplug);
57 TAILQ_INSERT_TAIL(&rte_bus_list, bus, next);
58 RTE_LOG(DEBUG, EAL, "Registered [%s] bus.\n", bus->name);
62 rte_bus_unregister(struct rte_bus *bus)
64 TAILQ_REMOVE(&rte_bus_list, bus, next);
65 RTE_LOG(DEBUG, EAL, "Unregistered [%s] bus.\n", bus->name);
68 /* Scan all the buses for registered devices */
73 struct rte_bus *bus = NULL;
75 TAILQ_FOREACH(bus, &rte_bus_list, next) {
78 RTE_LOG(ERR, EAL, "Scan for (%s) bus failed.\n",
87 /* Probe all devices of all buses */
92 struct rte_bus *bus, *vbus = NULL;
94 TAILQ_FOREACH(bus, &rte_bus_list, next) {
95 if (!strcmp(bus->name, "vdev")) {
102 RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
111 RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
120 /* Dump information of a single bus */
122 bus_dump_one(FILE *f, struct rte_bus *bus)
126 /* For now, dump only the bus name */
127 ret = fprintf(f, " %s\n", bus->name);
129 /* Error in case of inability in writing to stream */
137 rte_bus_dump(FILE *f)
142 TAILQ_FOREACH(bus, &rte_bus_list, next) {
143 ret = bus_dump_one(f, bus);
145 RTE_LOG(ERR, EAL, "Unable to write to stream (%d)\n",
153 rte_bus_find(const struct rte_bus *start, rte_bus_cmp_t cmp,
156 struct rte_bus *bus = NULL;
158 TAILQ_FOREACH(bus, &rte_bus_list, next) {
159 if (start && bus == start) {
160 start = NULL; /* starting point found */
163 if (cmp(bus, data) == 0)
170 cmp_rte_device(const struct rte_device *dev1, const void *_dev2)
172 const struct rte_device *dev2 = _dev2;
178 bus_find_device(const struct rte_bus *bus, const void *_dev)
180 struct rte_device *dev;
182 dev = bus->find_device(NULL, cmp_rte_device, _dev);
187 rte_bus_find_by_device(const struct rte_device *dev)
189 return rte_bus_find(NULL, bus_find_device, (const void *)dev);
193 cmp_bus_name(const struct rte_bus *bus, const void *_name)
195 const char *name = _name;
197 return strcmp(bus->name, name);
201 rte_bus_find_by_name(const char *busname)
203 return rte_bus_find(NULL, cmp_bus_name, (const void *)busname);
207 bus_can_parse(const struct rte_bus *bus, const void *_name)
209 const char *name = _name;
211 return !(bus->parse && bus->parse(name, NULL) == 0);
215 rte_bus_find_by_device_name(const char *str)
217 char name[RTE_DEV_NAME_MAX_LEN];
220 snprintf(name, sizeof(name), "%s", str);
221 c = strchr(name, ',');
224 return rte_bus_find(NULL, bus_can_parse, name);