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35 * Copyright 2013-2014 6WIND S.A.
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38 * modification, are permitted provided that the following conditions
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48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 #include <sys/queue.h>
71 #include <rte_interrupts.h>
74 #include <rte_per_lcore.h>
75 #include <rte_memory.h>
76 #include <rte_memzone.h>
78 #include <rte_string_fns.h>
79 #include <rte_common.h>
80 #include <rte_devargs.h>
82 #include "eal_private.h"
84 struct pci_driver_list pci_driver_list;
85 struct pci_device_list pci_device_list;
87 static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
89 struct rte_devargs *devargs;
91 TAILQ_FOREACH(devargs, &devargs_list, next) {
92 if (devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI &&
93 devargs->type != RTE_DEVTYPE_WHITELISTED_PCI)
95 if (!rte_eal_compare_pci_addr(&dev->addr, &devargs->pci.addr))
102 * If vendor/device ID match, call the devinit() function of all
103 * registered driver for the given device. Return -1 if initialization
104 * failed, return 1 if no driver is found for this device.
107 pci_probe_all_drivers(struct rte_pci_device *dev)
109 struct rte_pci_driver *dr = NULL;
115 TAILQ_FOREACH(dr, &pci_driver_list, next) {
116 rc = rte_eal_pci_probe_one_driver(dr, dev);
118 /* negative value is an error */
121 /* positive value means driver not found */
128 #ifdef RTE_LIBRTE_EAL_HOTPLUG
130 * If vendor/device ID match, call the devuninit() function of all
131 * registered driver for the given device. Return -1 if initialization
132 * failed, return 1 if no driver is found for this device.
135 pci_close_all_drivers(struct rte_pci_device *dev)
137 struct rte_pci_driver *dr = NULL;
143 TAILQ_FOREACH(dr, &pci_driver_list, next) {
144 rc = rte_eal_pci_close_one_driver(dr, dev);
146 /* negative value is an error */
149 /* positive value means driver not found */
157 * Find the pci device specified by pci address, then invoke probe function of
158 * the driver of the devive.
161 rte_eal_pci_probe_one(const struct rte_pci_addr *addr)
163 struct rte_pci_device *dev = NULL;
169 TAILQ_FOREACH(dev, &pci_device_list, next) {
170 if (rte_eal_compare_pci_addr(&dev->addr, addr))
173 ret = pci_probe_all_drivers(dev);
181 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
182 " cannot be used\n", dev->addr.domain, dev->addr.bus,
183 dev->addr.devid, dev->addr.function);
188 * Find the pci device specified by pci address, then invoke close function of
189 * the driver of the devive.
192 rte_eal_pci_close_one(const struct rte_pci_addr *addr)
194 struct rte_pci_device *dev = NULL;
200 TAILQ_FOREACH(dev, &pci_device_list, next) {
201 if (rte_eal_compare_pci_addr(&dev->addr, addr))
204 ret = pci_close_all_drivers(dev);
208 TAILQ_REMOVE(&pci_device_list, dev, next);
214 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
215 " cannot be used\n", dev->addr.domain, dev->addr.bus,
216 dev->addr.devid, dev->addr.function);
219 #endif /* RTE_LIBRTE_EAL_HOTPLUG */
222 * Scan the content of the PCI bus, and call the devinit() function for
223 * all registered drivers that have a matching entry in its id_table
224 * for discovered devices.
227 rte_eal_pci_probe(void)
229 struct rte_pci_device *dev = NULL;
230 struct rte_devargs *devargs;
234 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0)
237 TAILQ_FOREACH(dev, &pci_device_list, next) {
239 /* set devargs in PCI structure */
240 devargs = pci_devargs_lookup(dev);
242 dev->devargs = devargs;
244 /* probe all or only whitelisted devices */
246 ret = pci_probe_all_drivers(dev);
247 else if (devargs != NULL &&
248 devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
249 ret = pci_probe_all_drivers(dev);
251 rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
252 " cannot be used\n", dev->addr.domain, dev->addr.bus,
253 dev->addr.devid, dev->addr.function);
259 /* dump one device */
261 pci_dump_one_device(FILE *f, struct rte_pci_device *dev)
265 fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
266 dev->addr.devid, dev->addr.function);
267 fprintf(f, " - vendor:%x device:%x\n", dev->id.vendor_id,
270 for (i = 0; i != sizeof(dev->mem_resource) /
271 sizeof(dev->mem_resource[0]); i++) {
272 fprintf(f, " %16.16"PRIx64" %16.16"PRIx64"\n",
273 dev->mem_resource[i].phys_addr,
274 dev->mem_resource[i].len);
279 /* dump devices on the bus */
281 rte_eal_pci_dump(FILE *f)
283 struct rte_pci_device *dev = NULL;
285 TAILQ_FOREACH(dev, &pci_device_list, next) {
286 pci_dump_one_device(f, dev);
290 /* register a driver */
292 rte_eal_pci_register(struct rte_pci_driver *driver)
294 TAILQ_INSERT_TAIL(&pci_driver_list, driver, next);
297 /* unregister a driver */
299 rte_eal_pci_unregister(struct rte_pci_driver *driver)
301 TAILQ_REMOVE(&pci_driver_list, driver, next);