numam-dpdk/lib/librte_eal/common/eal_common_pci.c
Bruce Richardson e9d48c0072 update Intel copyright years to 2014
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2014-02-25 21:29:14 +01:00

230 lines
7.2 KiB
C

/*-
* 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(c) 2013 6WIND.
*
* 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 <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 "eal_private.h"
struct pci_driver_list driver_list;
struct pci_device_list device_list;
static struct rte_pci_addr *dev_blacklist = NULL;
static unsigned dev_blacklist_size = 0;
static int is_blacklisted(struct rte_pci_device *dev)
{
struct rte_pci_addr *loc = &dev->addr;
unsigned i;
for (i = 0; i < dev_blacklist_size; i++) {
if ((loc->domain == dev_blacklist[i].domain) &&
(loc->bus == dev_blacklist[i].bus) &&
(loc->devid == dev_blacklist[i].devid) &&
(loc->function == dev_blacklist[i].function)) {
return 1;
}
}
return 0; /* not in blacklist */
}
/*
* If vendor/device ID match, call the devinit() function of all
* registered driver for the given device. Return -1 if no driver is
* found for this device.
* For drivers with the RTE_PCI_DRV_MULTIPLE flag enabled, register
* the same device multiple times until failure to do so.
* It is required for non-Intel NIC drivers provided by third-parties such
* as 6WIND.
*/
static int
pci_probe_all_drivers(struct rte_pci_device *dev)
{
struct rte_pci_driver *dr = NULL;
int rc;
dev->blacklisted = !!is_blacklisted(dev);
TAILQ_FOREACH(dr, &driver_list, next) {
rc = rte_eal_pci_probe_one_driver(dr, dev);
if (rc < 0)
/* negative value is an error */
break;
if (rc > 0)
/* positive value means driver not found */
continue;
/* initialize subsequent driver instances for this device */
if ((dr->drv_flags & RTE_PCI_DRV_MULTIPLE) &&
(!dev->blacklisted))
while (rte_eal_pci_probe_one_driver(dr, dev) == 0)
;
return 0;
}
return -1;
}
/*
* Check if a device is ok to use according to whitelist rules.
*/
static int
pcidev_is_whitelisted(struct rte_pci_device *dev)
{
char buf[16];
if (dev->addr.domain == 0) {
rte_snprintf(buf, sizeof(buf), PCI_SHORT_PRI_FMT, dev->addr.bus,
dev->addr.devid, dev->addr.function);
if (eal_dev_is_whitelisted(buf, NULL))
return 1;
}
rte_snprintf(buf, sizeof(buf), PCI_PRI_FMT, dev->addr.domain,dev->addr.bus,
dev->addr.devid, dev->addr.function);
return eal_dev_is_whitelisted(buf, NULL);
}
/*
* 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;
TAILQ_FOREACH(dev, &device_list, next)
if (!eal_dev_whitelist_exists())
pci_probe_all_drivers(dev);
else if (pcidev_is_whitelisted(dev) && pci_probe_all_drivers(dev) < 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(struct rte_pci_device *dev)
{
int i;
printf(PCI_PRI_FMT, dev->addr.domain, dev->addr.bus,
dev->addr.devid, dev->addr.function);
printf(" - 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++) {
printf(" %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(void)
{
struct rte_pci_device *dev = NULL;
TAILQ_FOREACH(dev, &device_list, next) {
pci_dump_one_device(dev);
}
}
/* register a driver */
void
rte_eal_pci_register(struct rte_pci_driver *driver)
{
TAILQ_INSERT_TAIL(&driver_list, driver, next);
}
/* unregister a driver */
void
rte_eal_pci_unregister(struct rte_pci_driver *driver)
{
TAILQ_REMOVE(&driver_list, driver, next);
}
void
rte_eal_pci_set_blacklist(struct rte_pci_addr *blacklist, unsigned size)
{
dev_blacklist = blacklist;
dev_blacklist_size = size;
}