diff options
Diffstat (limited to 'src/dpdk_lib18/librte_eal/common/eal_common_pci.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_eal/common/eal_common_pci.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_eal/common/eal_common_pci.c b/src/dpdk_lib18/librte_eal/common/eal_common_pci.c new file mode 100755 index 00000000..f3c7f71a --- /dev/null +++ b/src/dpdk_lib18/librte_eal/common/eal_common_pci.c @@ -0,0 +1,207 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* BSD LICENSE + * + * Copyright 2013-2014 6WIND S.A. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of 6WIND S.A. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <string.h> +#include <inttypes.h> +#include <stdint.h> +#include <stdlib.h> +#include <stdio.h> +#include <sys/queue.h> + +#include <rte_interrupts.h> +#include <rte_log.h> +#include <rte_pci.h> +#include <rte_per_lcore.h> +#include <rte_memory.h> +#include <rte_memzone.h> +#include <rte_tailq.h> +#include <rte_eal.h> +#include <rte_string_fns.h> +#include <rte_common.h> +#include <rte_devargs.h> + +#include "eal_private.h" + +struct pci_driver_list pci_driver_list; +struct pci_device_list pci_device_list; + +static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev) +{ + struct rte_devargs *devargs; + + TAILQ_FOREACH(devargs, &devargs_list, next) { + if (devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI && + devargs->type != RTE_DEVTYPE_WHITELISTED_PCI) + continue; + if (!memcmp(&dev->addr, &devargs->pci.addr, sizeof(dev->addr))) + return devargs; + } + return NULL; +} + +/* + * If vendor/device ID match, call the devinit() function of all + * registered driver for the given device. Return -1 if initialization + * failed, return 1 if no driver is found for this device. + */ +static int +pci_probe_all_drivers(struct rte_pci_device *dev) +{ + struct rte_pci_driver *dr = NULL; + int rc; + + TAILQ_FOREACH(dr, &pci_driver_list, next) { + rc = rte_eal_pci_probe_one_driver(dr, dev); + if (rc < 0) + /* negative value is an error */ + return -1; + if (rc > 0) + /* positive value means driver not found */ + continue; + return 0; + } + return 1; +} + +/* + * Scan the content of the PCI bus, and call the devinit() function for + * all registered drivers that have a matching entry in its id_table + * for discovered devices. + */ +int +rte_eal_pci_probe(void) +{ + struct rte_pci_device *dev = NULL; + struct rte_devargs *devargs; + int probe_all = 0; + int ret = 0; + + if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0) + probe_all = 1; + + TAILQ_FOREACH(dev, &pci_device_list, next) { + + /* set devargs in PCI structure */ + devargs = pci_devargs_lookup(dev); + if (devargs != NULL) + dev->devargs = devargs; + + /* probe all or only whitelisted devices */ + if (probe_all) + ret = pci_probe_all_drivers(dev); + else if (devargs != NULL && + devargs->type == RTE_DEVTYPE_WHITELISTED_PCI) + ret = pci_probe_all_drivers(dev); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT + " cannot be used\n", dev->addr.domain, dev->addr.bus, + dev->addr.devid, dev->addr.function); + } + + return 0; +} + +/* dump one device */ +static int +pci_dump_one_device(FILE *f, struct rte_pci_device *dev) +{ + int i; + + fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus, + dev->addr.devid, dev->addr.function); + fprintf(f, " - vendor:%x device:%x\n", dev->id.vendor_id, + dev->id.device_id); + + for (i = 0; i != sizeof(dev->mem_resource) / + sizeof(dev->mem_resource[0]); i++) { + fprintf(f, " %16.16"PRIx64" %16.16"PRIx64"\n", + dev->mem_resource[i].phys_addr, + dev->mem_resource[i].len); + } + return 0; +} + +/* dump devices on the bus */ +void +rte_eal_pci_dump(FILE *f) +{ + struct rte_pci_device *dev = NULL; + + TAILQ_FOREACH(dev, &pci_device_list, next) { + pci_dump_one_device(f, dev); + } +} + +/* register a driver */ +void +rte_eal_pci_register(struct rte_pci_driver *driver) +{ + TAILQ_INSERT_TAIL(&pci_driver_list, driver, next); +} + +/* unregister a driver */ +void +rte_eal_pci_unregister(struct rte_pci_driver *driver) +{ + TAILQ_REMOVE(&pci_driver_list, driver, next); +} |