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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
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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
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61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 #include <sys/queue.h>
72 #include <rte_interrupts.h>
75 #include <rte_per_lcore.h>
76 #include <rte_memory.h>
77 #include <rte_memzone.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))
102 /* map a particular resource from a file */
104 pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
105 int additional_flags)
109 /* Map the PCI memory resource of device */
110 mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
111 MAP_SHARED | additional_flags, fd, offset);
112 if (mapaddr == MAP_FAILED) {
113 RTE_LOG(ERR, EAL, "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
114 __func__, fd, requested_addr,
115 (unsigned long)size, (unsigned long)offset,
116 strerror(errno), mapaddr);
118 RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
123 /* unmap a particular resource */
125 pci_unmap_resource(void *requested_addr, size_t size)
127 if (requested_addr == NULL)
130 /* Unmap the PCI memory resource of device */
131 if (munmap(requested_addr, size)) {
132 RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n",
133 __func__, requested_addr, (unsigned long)size,
136 RTE_LOG(DEBUG, EAL, " PCI memory unmapped at %p\n",
141 * If vendor/device ID match, call the devinit() function of all
142 * registered driver for the given device. Return -1 if initialization
143 * failed, return 1 if no driver is found for this device.
146 pci_probe_all_drivers(struct rte_pci_device *dev)
148 struct rte_pci_driver *dr = NULL;
154 TAILQ_FOREACH(dr, &pci_driver_list, next) {
155 rc = rte_eal_pci_probe_one_driver(dr, dev);
157 /* negative value is an error */
160 /* positive value means driver not found */
167 #ifdef RTE_LIBRTE_EAL_HOTPLUG
169 * If vendor/device ID match, call the devuninit() function of all
170 * registered driver for the given device. Return -1 if initialization
171 * failed, return 1 if no driver is found for this device.
174 pci_close_all_drivers(struct rte_pci_device *dev)
176 struct rte_pci_driver *dr = NULL;
182 TAILQ_FOREACH(dr, &pci_driver_list, next) {
183 rc = rte_eal_pci_close_one_driver(dr, dev);
185 /* negative value is an error */
188 /* positive value means driver not found */
196 * Find the pci device specified by pci address, then invoke probe function of
197 * the driver of the devive.
200 rte_eal_pci_probe_one(const struct rte_pci_addr *addr)
202 struct rte_pci_device *dev = NULL;
208 TAILQ_FOREACH(dev, &pci_device_list, next) {
209 if (rte_eal_compare_pci_addr(&dev->addr, addr))
212 ret = pci_probe_all_drivers(dev);
220 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
221 " cannot be used\n", dev->addr.domain, dev->addr.bus,
222 dev->addr.devid, dev->addr.function);
227 * Find the pci device specified by pci address, then invoke close function of
228 * the driver of the devive.
231 rte_eal_pci_close_one(const struct rte_pci_addr *addr)
233 struct rte_pci_device *dev = NULL;
239 TAILQ_FOREACH(dev, &pci_device_list, next) {
240 if (rte_eal_compare_pci_addr(&dev->addr, addr))
243 ret = pci_close_all_drivers(dev);
247 TAILQ_REMOVE(&pci_device_list, dev, next);
253 RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
254 " cannot be used\n", dev->addr.domain, dev->addr.bus,
255 dev->addr.devid, dev->addr.function);
258 #endif /* RTE_LIBRTE_EAL_HOTPLUG */
261 * Scan the content of the PCI bus, and call the devinit() function for
262 * all registered drivers that have a matching entry in its id_table
263 * for discovered devices.
266 rte_eal_pci_probe(void)
268 struct rte_pci_device *dev = NULL;
269 struct rte_devargs *devargs;
273 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0)
276 TAILQ_FOREACH(dev, &pci_device_list, next) {
278 /* set devargs in PCI structure */
279 devargs = pci_devargs_lookup(dev);
281 dev->devargs = devargs;
283 /* probe all or only whitelisted devices */
285 ret = pci_probe_all_drivers(dev);
286 else if (devargs != NULL &&
287 devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
288 ret = pci_probe_all_drivers(dev);
290 rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
291 " cannot be used\n", dev->addr.domain, dev->addr.bus,
292 dev->addr.devid, dev->addr.function);
298 /* dump one device */
300 pci_dump_one_device(FILE *f, struct rte_pci_device *dev)
304 fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
305 dev->addr.devid, dev->addr.function);
306 fprintf(f, " - vendor:%x device:%x\n", dev->id.vendor_id,
309 for (i = 0; i != sizeof(dev->mem_resource) /
310 sizeof(dev->mem_resource[0]); i++) {
311 fprintf(f, " %16.16"PRIx64" %16.16"PRIx64"\n",
312 dev->mem_resource[i].phys_addr,
313 dev->mem_resource[i].len);
318 /* dump devices on the bus */
320 rte_eal_pci_dump(FILE *f)
322 struct rte_pci_device *dev = NULL;
324 TAILQ_FOREACH(dev, &pci_device_list, next) {
325 pci_dump_one_device(f, dev);
329 /* register a driver */
331 rte_eal_pci_register(struct rte_pci_driver *driver)
333 TAILQ_INSERT_TAIL(&pci_driver_list, driver, next);
336 /* unregister a driver */
338 rte_eal_pci_unregister(struct rte_pci_driver *driver)
340 TAILQ_REMOVE(&pci_driver_list, driver, next);