e9d48c0072
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
230 lines
7.2 KiB
C
230 lines
7.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* BSD LICENSE
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*
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* Copyright(c) 2013 6WIND.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <inttypes.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/queue.h>
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#include <rte_interrupts.h>
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#include <rte_log.h>
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#include <rte_pci.h>
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#include <rte_per_lcore.h>
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#include <rte_memory.h>
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#include <rte_memzone.h>
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#include <rte_tailq.h>
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#include <rte_eal.h>
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#include <rte_string_fns.h>
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#include <rte_common.h>
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#include "eal_private.h"
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struct pci_driver_list driver_list;
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struct pci_device_list device_list;
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static struct rte_pci_addr *dev_blacklist = NULL;
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static unsigned dev_blacklist_size = 0;
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static int is_blacklisted(struct rte_pci_device *dev)
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{
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struct rte_pci_addr *loc = &dev->addr;
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unsigned i;
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for (i = 0; i < dev_blacklist_size; i++) {
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if ((loc->domain == dev_blacklist[i].domain) &&
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(loc->bus == dev_blacklist[i].bus) &&
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(loc->devid == dev_blacklist[i].devid) &&
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(loc->function == dev_blacklist[i].function)) {
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return 1;
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}
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}
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return 0; /* not in blacklist */
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}
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/*
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* If vendor/device ID match, call the devinit() function of all
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* registered driver for the given device. Return -1 if no driver is
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* found for this device.
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* For drivers with the RTE_PCI_DRV_MULTIPLE flag enabled, register
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* the same device multiple times until failure to do so.
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* It is required for non-Intel NIC drivers provided by third-parties such
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* as 6WIND.
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*/
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static int
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pci_probe_all_drivers(struct rte_pci_device *dev)
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{
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struct rte_pci_driver *dr = NULL;
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int rc;
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dev->blacklisted = !!is_blacklisted(dev);
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TAILQ_FOREACH(dr, &driver_list, next) {
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rc = rte_eal_pci_probe_one_driver(dr, dev);
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if (rc < 0)
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/* negative value is an error */
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break;
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if (rc > 0)
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/* positive value means driver not found */
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continue;
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/* initialize subsequent driver instances for this device */
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if ((dr->drv_flags & RTE_PCI_DRV_MULTIPLE) &&
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(!dev->blacklisted))
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while (rte_eal_pci_probe_one_driver(dr, dev) == 0)
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;
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return 0;
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}
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return -1;
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}
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/*
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* Check if a device is ok to use according to whitelist rules.
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*/
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static int
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pcidev_is_whitelisted(struct rte_pci_device *dev)
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{
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char buf[16];
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if (dev->addr.domain == 0) {
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rte_snprintf(buf, sizeof(buf), PCI_SHORT_PRI_FMT, dev->addr.bus,
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dev->addr.devid, dev->addr.function);
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if (eal_dev_is_whitelisted(buf, NULL))
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return 1;
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}
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rte_snprintf(buf, sizeof(buf), PCI_PRI_FMT, dev->addr.domain,dev->addr.bus,
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dev->addr.devid, dev->addr.function);
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return eal_dev_is_whitelisted(buf, NULL);
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}
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/*
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* Scan the content of the PCI bus, and call the devinit() function for
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* all registered drivers that have a matching entry in its id_table
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* for discovered devices.
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*/
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int
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rte_eal_pci_probe(void)
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{
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struct rte_pci_device *dev = NULL;
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TAILQ_FOREACH(dev, &device_list, next)
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if (!eal_dev_whitelist_exists())
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pci_probe_all_drivers(dev);
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else if (pcidev_is_whitelisted(dev) && pci_probe_all_drivers(dev) < 0 )
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rte_exit(EXIT_FAILURE, "Requested device " PCI_PRI_FMT
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" cannot be used\n", dev->addr.domain,dev->addr.bus,
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dev->addr.devid, dev->addr.function);
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return 0;
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}
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/* dump one device */
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static int
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pci_dump_one_device(struct rte_pci_device *dev)
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{
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int i;
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printf(PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
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dev->addr.devid, dev->addr.function);
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printf(" - vendor:%x device:%x\n", dev->id.vendor_id,
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dev->id.device_id);
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for (i = 0; i != sizeof(dev->mem_resource) /
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sizeof(dev->mem_resource[0]); i++) {
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printf(" %16.16"PRIx64" %16.16"PRIx64"\n",
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dev->mem_resource[i].phys_addr,
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dev->mem_resource[i].len);
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}
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return 0;
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}
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/* dump devices on the bus */
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void
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rte_eal_pci_dump(void)
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{
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struct rte_pci_device *dev = NULL;
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TAILQ_FOREACH(dev, &device_list, next) {
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pci_dump_one_device(dev);
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}
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}
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/* register a driver */
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void
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rte_eal_pci_register(struct rte_pci_driver *driver)
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{
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TAILQ_INSERT_TAIL(&driver_list, driver, next);
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}
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/* unregister a driver */
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void
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rte_eal_pci_unregister(struct rte_pci_driver *driver)
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{
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TAILQ_REMOVE(&driver_list, driver, next);
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}
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void
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rte_eal_pci_set_blacklist(struct rte_pci_addr *blacklist, unsigned size)
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{
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dev_blacklist = blacklist;
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dev_blacklist_size = size;
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}
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