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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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42 * notice, this list of conditions and the following disclaimer.
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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>
77 #include <rte_tailq.h>
79 #include <rte_string_fns.h>
80 #include <rte_common.h>
81 #include <rte_devargs.h>
83 #include "eal_private.h"
85 struct pci_driver_list pci_driver_list;
86 struct pci_device_list pci_device_list;
88 static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
90 struct rte_devargs *devargs;
92 TAILQ_FOREACH(devargs, &devargs_list, next) {
93 if (devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI &&
94 devargs->type != RTE_DEVTYPE_WHITELISTED_PCI)
96 if (!rte_eal_compare_pci_addr(&dev->addr, &devargs->pci.addr))
103 * If vendor/device ID match, call the devinit() function of all
104 * registered driver for the given device. Return -1 if initialization
105 * failed, return 1 if no driver is found for this device.
108 pci_probe_all_drivers(struct rte_pci_device *dev)
110 struct rte_pci_driver *dr = NULL;
116 TAILQ_FOREACH(dr, &pci_driver_list, next) {
117 rc = rte_eal_pci_probe_one_driver(dr, dev);
119 /* negative value is an error */
122 /* positive value means driver not found */
129 #ifdef RTE_LIBRTE_EAL_HOTPLUG
131 * If vendor/device ID match, call the devuninit() function of all
132 * registered driver for the given device. Return -1 if initialization
133 * failed, return 1 if no driver is found for this device.
136 pci_close_all_drivers(struct rte_pci_device *dev)
138 struct rte_pci_driver *dr = NULL;
144 TAILQ_FOREACH(dr, &pci_driver_list, next) {
145 rc = rte_eal_pci_close_one_driver(dr, dev);
147 /* negative value is an error */
150 /* positive value means driver not found */
158 * Find the pci device specified by pci address, then invoke probe function of
159 * the driver of the devive.
162 rte_eal_pci_probe_one(struct rte_pci_addr *addr)
164 struct rte_pci_device *dev = NULL;
170 TAILQ_FOREACH(dev, &pci_device_list, next) {
171 if (rte_eal_compare_pci_addr(&dev->addr, addr))
174 ret = pci_probe_all_drivers(dev);
182 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
183 " cannot be used\n", dev->addr.domain, dev->addr.bus,
184 dev->addr.devid, dev->addr.function);
189 * Find the pci device specified by pci address, then invoke close function of
190 * the driver of the devive.
193 rte_eal_pci_close_one(struct rte_pci_addr *addr)
195 struct rte_pci_device *dev = NULL;
201 TAILQ_FOREACH(dev, &pci_device_list, next) {
202 if (rte_eal_compare_pci_addr(&dev->addr, addr))
205 ret = pci_close_all_drivers(dev);
209 TAILQ_REMOVE(&pci_device_list, dev, next);
215 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
216 " cannot be used\n", dev->addr.domain, dev->addr.bus,
217 dev->addr.devid, dev->addr.function);
220 #endif /* RTE_LIBRTE_EAL_HOTPLUG */
223 * Scan the content of the PCI bus, and call the devinit() function for
224 * all registered drivers that have a matching entry in its id_table
225 * for discovered devices.
228 rte_eal_pci_probe(void)
230 struct rte_pci_device *dev = NULL;
231 struct rte_devargs *devargs;
235 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0)
238 TAILQ_FOREACH(dev, &pci_device_list, next) {
240 /* set devargs in PCI structure */
241 devargs = pci_devargs_lookup(dev);
243 dev->devargs = devargs;
245 /* probe all or only whitelisted devices */
247 ret = pci_probe_all_drivers(dev);
248 else if (devargs != NULL &&
249 devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
250 ret = pci_probe_all_drivers(dev);
252 rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
253 " cannot be used\n", dev->addr.domain, dev->addr.bus,
254 dev->addr.devid, dev->addr.function);
260 /* dump one device */
262 pci_dump_one_device(FILE *f, struct rte_pci_device *dev)
266 fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
267 dev->addr.devid, dev->addr.function);
268 fprintf(f, " - vendor:%x device:%x\n", dev->id.vendor_id,
271 for (i = 0; i != sizeof(dev->mem_resource) /
272 sizeof(dev->mem_resource[0]); i++) {
273 fprintf(f, " %16.16"PRIx64" %16.16"PRIx64"\n",
274 dev->mem_resource[i].phys_addr,
275 dev->mem_resource[i].len);
280 /* dump devices on the bus */
282 rte_eal_pci_dump(FILE *f)
284 struct rte_pci_device *dev = NULL;
286 TAILQ_FOREACH(dev, &pci_device_list, next) {
287 pci_dump_one_device(f, dev);
291 /* register a driver */
293 rte_eal_pci_register(struct rte_pci_driver *driver)
295 TAILQ_INSERT_TAIL(&pci_driver_list, driver, next);
298 /* unregister a driver */
300 rte_eal_pci_unregister(struct rte_pci_driver *driver)
302 TAILQ_REMOVE(&pci_driver_list, driver, next);