b10eef348d
The flag RTE_PCI_DRV_MULTIPLE was used to register an eth_driver allowing multiples devices with a single PCI id. It is now possible to register a pci_driver and create ethdev objects using rte_eth_dev_allocate(). Suggested-by: David Marchand <david.marchand@6wind.com> Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
208 lines
6.5 KiB
C
208 lines
6.5 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 2013-2014 6WIND S.A.
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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 <string.h>
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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 <rte_devargs.h>
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#include "eal_private.h"
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struct pci_driver_list pci_driver_list;
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struct pci_device_list pci_device_list;
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static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
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{
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struct rte_devargs *devargs;
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TAILQ_FOREACH(devargs, &devargs_list, next) {
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if (devargs->type != RTE_DEVTYPE_BLACKLISTED_PCI &&
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devargs->type != RTE_DEVTYPE_WHITELISTED_PCI)
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continue;
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if (!memcmp(&dev->addr, &devargs->pci.addr, sizeof(dev->addr)))
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return devargs;
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}
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return NULL;
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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 initialization
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* failed, return 1 if no driver is found for this device.
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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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TAILQ_FOREACH(dr, &pci_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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return -1;
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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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return 0;
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}
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return 1;
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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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struct rte_devargs *devargs;
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int probe_all = 0;
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int ret = 0;
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if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0)
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probe_all = 1;
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TAILQ_FOREACH(dev, &pci_device_list, next) {
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/* set devargs in PCI structure */
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devargs = pci_devargs_lookup(dev);
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if (devargs != NULL)
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dev->devargs = devargs;
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/* probe all or only whitelisted devices */
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if (probe_all)
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ret = pci_probe_all_drivers(dev);
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else if (devargs != NULL &&
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devargs->type == RTE_DEVTYPE_WHITELISTED_PCI)
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ret = pci_probe_all_drivers(dev);
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if (ret < 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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}
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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(FILE *f, struct rte_pci_device *dev)
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{
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int i;
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fprintf(f, PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
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dev->addr.devid, dev->addr.function);
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fprintf(f, " - 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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fprintf(f, " %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(FILE *f)
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{
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struct rte_pci_device *dev = NULL;
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TAILQ_FOREACH(dev, &pci_device_list, next) {
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pci_dump_one_device(f, 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(&pci_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(&pci_driver_list, driver, next);
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}
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