4 * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
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8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
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14 * notice, this list of conditions and the following disclaimer in
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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.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
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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.
68 #include <sys/queue.h>
70 #include <rte_interrupts.h>
73 #include <rte_per_lcore.h>
74 #include <rte_memory.h>
75 #include <rte_memzone.h>
76 #include <rte_tailq.h>
78 #include <rte_string_fns.h>
79 #include <rte_common.h>
81 #include "eal_private.h"
83 struct pci_driver_list driver_list;
84 struct pci_device_list device_list;
86 static struct rte_pci_addr *dev_blacklist = NULL;
87 static unsigned dev_blacklist_size = 0;
89 static int is_blacklisted(struct rte_pci_device *dev)
91 struct rte_pci_addr *loc = &dev->addr;
94 for (i = 0; i < dev_blacklist_size; i++) {
95 if ((loc->domain == dev_blacklist[i].domain) &&
96 (loc->bus == dev_blacklist[i].bus) &&
97 (loc->devid == dev_blacklist[i].devid) &&
98 (loc->function == dev_blacklist[i].function)) {
103 return 0; /* not in blacklist */
107 * If vendor/device ID match, call the devinit() function of all
108 * registered driver for the given device. Return -1 if no driver is
109 * found for this device.
110 * For drivers with the RTE_PCI_DRV_MULTIPLE flag enabled, register
111 * the same device multiple times until failure to do so.
112 * It is required for non-Intel NIC drivers provided by third-parties such
116 pci_probe_all_drivers(struct rte_pci_device *dev)
118 struct rte_pci_driver *dr = NULL;
121 dev->blacklisted = !!is_blacklisted(dev);
122 TAILQ_FOREACH(dr, &driver_list, next) {
123 rc = rte_eal_pci_probe_one_driver(dr, dev);
125 /* negative value is an error */
128 /* positive value means driver not found */
130 /* initialize subsequent driver instances for this device */
131 if ((dr->drv_flags & RTE_PCI_DRV_MULTIPLE) &&
133 while (rte_eal_pci_probe_one_driver(dr, dev) == 0)
141 * Check if a device is ok to use according to whitelist rules.
144 pcidev_is_whitelisted(struct rte_pci_device *dev)
147 if (dev->addr.domain == 0) {
148 rte_snprintf(buf, sizeof(buf), PCI_SHORT_PRI_FMT, dev->addr.bus,
149 dev->addr.devid, dev->addr.function);
150 if (eal_dev_is_whitelisted(buf, NULL))
153 rte_snprintf(buf, sizeof(buf), PCI_PRI_FMT, dev->addr.domain,dev->addr.bus,
154 dev->addr.devid, dev->addr.function);
155 return eal_dev_is_whitelisted(buf, NULL);
159 * Scan the content of the PCI bus, and call the devinit() function for
160 * all registered drivers that have a matching entry in its id_table
161 * for discovered devices.
164 rte_eal_pci_probe(void)
166 struct rte_pci_device *dev = NULL;
168 TAILQ_FOREACH(dev, &device_list, next)
169 if (!eal_dev_whitelist_exists())
170 pci_probe_all_drivers(dev);
171 else if (pcidev_is_whitelisted(dev) && pci_probe_all_drivers(dev) < 0 )
172 rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
173 " cannot be used\n", dev->addr.domain,dev->addr.bus,
174 dev->addr.devid, dev->addr.function);
179 /* dump one device */
181 pci_dump_one_device(struct rte_pci_device *dev)
185 printf(PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
186 dev->addr.devid, dev->addr.function);
187 printf(" - vendor:%x device:%x\n", dev->id.vendor_id,
190 for (i = 0; i != sizeof(dev->mem_resource) /
191 sizeof(dev->mem_resource[0]); i++) {
192 printf(" %16.16"PRIx64" %16.16"PRIx64"\n",
193 dev->mem_resource[i].phys_addr,
194 dev->mem_resource[i].len);
199 /* dump devices on the bus */
201 rte_eal_pci_dump(void)
203 struct rte_pci_device *dev = NULL;
205 TAILQ_FOREACH(dev, &device_list, next) {
206 pci_dump_one_device(dev);
210 /* register a driver */
212 rte_eal_pci_register(struct rte_pci_driver *driver)
214 TAILQ_INSERT_TAIL(&driver_list, driver, next);
217 /* unregister a driver */
219 rte_eal_pci_unregister(struct rte_pci_driver *driver)
221 TAILQ_REMOVE(&driver_list, driver, next);
225 rte_eal_pci_set_blacklist(struct rte_pci_addr *blacklist, unsigned size)
227 dev_blacklist = blacklist;
228 dev_blacklist_size = size;