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38 * modification, are permitted provided that the following conditions
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49 * from this software without specific prior written permission.
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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 (!memcmp(&dev->addr, &devargs->pci.addr, sizeof(dev->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.
106 * For drivers with the RTE_PCI_DRV_MULTIPLE flag enabled, register
107 * the same device multiple times until failure to do so.
108 * It is required for non-Intel NIC drivers provided by third-parties such
112 pci_probe_all_drivers(struct rte_pci_device *dev)
114 struct rte_pci_driver *dr = NULL;
117 TAILQ_FOREACH(dr, &pci_driver_list, next) {
118 rc = rte_eal_pci_probe_one_driver(dr, dev);
120 /* negative value is an error */
123 /* positive value means driver not found */
125 /* initialize subsequent driver instances for this device */
126 if ((dr->drv_flags & RTE_PCI_DRV_MULTIPLE) &&
127 (dev->devargs == NULL ||
128 dev->devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI))
129 while (rte_eal_pci_probe_one_driver(dr, dev) == 0)
137 * Scan the content of the PCI bus, and call the devinit() function for
138 * all registered drivers that have a matching entry in its id_table
139 * for discovered devices.
142 rte_eal_pci_probe(void)
144 struct rte_pci_device *dev = NULL;
145 struct rte_devargs *devargs;
149 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0)
152 TAILQ_FOREACH(dev, &pci_device_list, next) {
153 /* check if device has already been initialized */
154 if (dev->driver != NULL)
157 /* set devargs in PCI structure */
158 devargs = pci_devargs_lookup(dev);
160 dev->devargs = devargs;
162 /* probe all or only whitelisted devices */
164 ret = pci_probe_all_drivers(dev);
165 else if (devargs != NULL &&
166 devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
167 ret = pci_probe_all_drivers(dev);
169 rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
170 " cannot be used\n", dev->addr.domain, dev->addr.bus,
171 dev->addr.devid, dev->addr.function);
177 /* dump one device */
179 pci_dump_one_device(FILE *f, struct rte_pci_device *dev)
183 fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
184 dev->addr.devid, dev->addr.function);
185 fprintf(f, " - vendor:%x device:%x\n", dev->id.vendor_id,
188 for (i = 0; i != sizeof(dev->mem_resource) /
189 sizeof(dev->mem_resource[0]); i++) {
190 fprintf(f, " %16.16"PRIx64" %16.16"PRIx64"\n",
191 dev->mem_resource[i].phys_addr,
192 dev->mem_resource[i].len);
197 /* dump devices on the bus */
199 rte_eal_pci_dump(FILE *f)
201 struct rte_pci_device *dev = NULL;
203 TAILQ_FOREACH(dev, &pci_device_list, next) {
204 pci_dump_one_device(f, dev);
208 /* register a driver */
210 rte_eal_pci_register(struct rte_pci_driver *driver)
212 TAILQ_INSERT_TAIL(&pci_driver_list, driver, next);
215 /* unregister a driver */
217 rte_eal_pci_unregister(struct rte_pci_driver *driver)
219 TAILQ_REMOVE(&pci_driver_list, driver, next);