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@@ -1,848 +0,0 @@
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-#include "rte_config.h"
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-/* SPDX-License-Identifier: BSD-3-Clause
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- * Copyright(c) 2010-2014 Intel Corporation
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- */
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-
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-#include <string.h>
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-#include <dirent.h>
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-
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-#include <rte_log.h>
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-#include <rte_bus.h>
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-#include <rte_pci.h>
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-#include <rte_bus_pci.h>
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-#include <rte_malloc.h>
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-#include <rte_devargs.h>
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-#include <rte_memcpy.h>
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-#include <rte_vfio.h>
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-
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-#include "eal_filesystem.h"
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-
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-#include "private.h"
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-#include "pci_init.h"
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-
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-/**
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- * @file
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- * PCI probing under linux
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- *
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- * This code is used to simulate a PCI probe by parsing information in sysfs.
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- * When a registered device matches a driver, it is then initialized with
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- * IGB_UIO driver (or doesn't initialize, if the device wasn't bound to it).
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- */
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-
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-extern struct rte_pci_bus rte_pci_bus;
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-
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-static int
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-pci_get_kernel_driver_by_path(const char *filename, char *dri_name,
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- size_t len)
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-{
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- int count;
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- char path[PATH_MAX];
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- char *name;
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-
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- if (!filename || !dri_name)
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- return -1;
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-
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- count = readlink(filename, path, PATH_MAX);
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- if (count >= PATH_MAX)
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- return -1;
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-
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- /* For device does not have a driver */
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- if (count < 0)
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- return 1;
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-
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- path[count] = '\0';
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-
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- name = strrchr(path, '/');
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- if (name) {
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- strlcpy(dri_name, name + 1, len);
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- return 0;
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- }
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-
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- return -1;
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-}
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-
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-/* Map pci device */
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-int
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-rte_pci_map_device(struct rte_pci_device *dev)
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-{
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- int ret = -1;
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-
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- /* try mapping the NIC resources using VFIO if it exists */
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- switch (dev->kdrv) {
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- case RTE_PCI_KDRV_VFIO:
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-#ifdef VFIO_PRESENT
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- if (pci_vfio_is_enabled())
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- ret = pci_vfio_map_resource(dev);
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-#endif
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- break;
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- case RTE_PCI_KDRV_IGB_UIO:
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- case RTE_PCI_KDRV_UIO_GENERIC:
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- if (rte_eal_using_phys_addrs()) {
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- /* map resources for devices that use uio */
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- ret = pci_uio_map_resource(dev);
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- }
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- break;
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- default:
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- RTE_LOG(DEBUG, EAL,
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- " Not managed by a supported kernel driver, skipped\n");
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- ret = 1;
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- break;
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- }
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-
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- return ret;
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-}
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-
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-/* Unmap pci device */
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-void
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-rte_pci_unmap_device(struct rte_pci_device *dev)
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-{
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- /* try unmapping the NIC resources using VFIO if it exists */
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- switch (dev->kdrv) {
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- case RTE_PCI_KDRV_VFIO:
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-#ifdef VFIO_PRESENT
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- if (pci_vfio_is_enabled())
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- pci_vfio_unmap_resource(dev);
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-#endif
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- break;
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- case RTE_PCI_KDRV_IGB_UIO:
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- case RTE_PCI_KDRV_UIO_GENERIC:
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- /* unmap resources for devices that use uio */
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- pci_uio_unmap_resource(dev);
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- break;
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- default:
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- RTE_LOG(DEBUG, EAL,
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- " Not managed by a supported kernel driver, skipped\n");
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- break;
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- }
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-}
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-
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-static int
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-find_max_end_va(const struct rte_memseg_list *msl, void *arg)
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-{
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- size_t sz = msl->len;
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- void *end_va = RTE_PTR_ADD(msl->base_va, sz);
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- void **max_va = arg;
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-
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- if (*max_va < end_va)
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- *max_va = end_va;
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- return 0;
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-}
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-
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-void *
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-pci_find_max_end_va(void)
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-{
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- void *va = NULL;
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-
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- rte_memseg_list_walk(find_max_end_va, &va);
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- return va;
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-}
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-
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-
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-/* parse one line of the "resource" sysfs file (note that the 'line'
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- * string is modified)
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- */
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-int
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-pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
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- uint64_t *end_addr, uint64_t *flags)
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-{
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- union pci_resource_info {
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- struct {
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- char *phys_addr;
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- char *end_addr;
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- char *flags;
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- };
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- char *ptrs[PCI_RESOURCE_FMT_NVAL];
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- } res_info;
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-
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- if (rte_strsplit(line, len, res_info.ptrs, 3, ' ') != 3) {
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- RTE_LOG(ERR, EAL,
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- "%s(): bad resource format\n", __func__);
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- return -1;
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- }
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- errno = 0;
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- *phys_addr = strtoull(res_info.phys_addr, NULL, 16);
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- *end_addr = strtoull(res_info.end_addr, NULL, 16);
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- *flags = strtoull(res_info.flags, NULL, 16);
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- if (errno != 0) {
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- RTE_LOG(ERR, EAL,
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- "%s(): bad resource format\n", __func__);
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- return -1;
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- }
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-
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- return 0;
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-}
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-
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-/* parse the "resource" sysfs file */
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-static int
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-pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
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-{
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- FILE *f;
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- char buf[BUFSIZ];
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- int i;
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- uint64_t phys_addr, end_addr, flags;
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-
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- f = fopen(filename, "r");
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- if (f == NULL) {
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- RTE_LOG(ERR, EAL, "Cannot open sysfs resource\n");
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- return -1;
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- }
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-
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- for (i = 0; i<PCI_MAX_RESOURCE; i++) {
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-
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- if (fgets(buf, sizeof(buf), f) == NULL) {
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- RTE_LOG(ERR, EAL,
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- "%s(): cannot read resource\n", __func__);
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- goto error;
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- }
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- if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr,
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- &end_addr, &flags) < 0)
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- goto error;
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-
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- if (flags & IORESOURCE_MEM) {
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- dev->mem_resource[i].phys_addr = phys_addr;
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- dev->mem_resource[i].len = end_addr - phys_addr + 1;
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- /* not mapped for now */
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- dev->mem_resource[i].addr = NULL;
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- }
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- }
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- fclose(f);
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- return 0;
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-
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-error:
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- fclose(f);
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- return -1;
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-}
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-
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-/* Scan one pci sysfs entry, and fill the devices list from it. */
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-static int
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-pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
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-{
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- char filename[PATH_MAX];
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- unsigned long tmp;
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- struct rte_pci_device *dev;
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- char driver[PATH_MAX];
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- int ret;
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-
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- dev = malloc(sizeof(*dev));
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- if (dev == NULL)
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- return -1;
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-
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- memset(dev, 0, sizeof(*dev));
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- dev->device.bus = &rte_pci_bus.bus;
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- dev->addr = *addr;
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-
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- /* get vendor id */
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- snprintf(filename, sizeof(filename), "%s/vendor", dirname);
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- if (eal_parse_sysfs_value(filename, &tmp) < 0) {
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- free(dev);
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- return -1;
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- }
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- dev->id.vendor_id = (uint16_t)tmp;
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-
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- /* get device id */
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- snprintf(filename, sizeof(filename), "%s/device", dirname);
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- if (eal_parse_sysfs_value(filename, &tmp) < 0) {
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- free(dev);
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- return -1;
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- }
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- dev->id.device_id = (uint16_t)tmp;
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-
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- /* get subsystem_vendor id */
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- snprintf(filename, sizeof(filename), "%s/subsystem_vendor",
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- dirname);
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- if (eal_parse_sysfs_value(filename, &tmp) < 0) {
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- free(dev);
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- return -1;
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- }
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- dev->id.subsystem_vendor_id = (uint16_t)tmp;
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-
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- /* get subsystem_device id */
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- snprintf(filename, sizeof(filename), "%s/subsystem_device",
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- dirname);
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- if (eal_parse_sysfs_value(filename, &tmp) < 0) {
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- free(dev);
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- return -1;
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- }
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- dev->id.subsystem_device_id = (uint16_t)tmp;
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-
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- /* get class_id */
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- snprintf(filename, sizeof(filename), "%s/class",
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- dirname);
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- if (eal_parse_sysfs_value(filename, &tmp) < 0) {
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- free(dev);
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- return -1;
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- }
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- /* the least 24 bits are valid: class, subclass, program interface */
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- dev->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
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-
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- /* get max_vfs */
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- dev->max_vfs = 0;
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- snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
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- if (!access(filename, F_OK) &&
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- eal_parse_sysfs_value(filename, &tmp) == 0)
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- dev->max_vfs = (uint16_t)tmp;
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- else {
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- /* for non igb_uio driver, need kernel version >= 3.8 */
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- snprintf(filename, sizeof(filename),
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- "%s/sriov_numvfs", dirname);
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- if (!access(filename, F_OK) &&
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- eal_parse_sysfs_value(filename, &tmp) == 0)
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- dev->max_vfs = (uint16_t)tmp;
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- }
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-
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- /* get numa node, default to 0 if not present */
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- snprintf(filename, sizeof(filename), "%s/numa_node",
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- dirname);
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-
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- if (access(filename, F_OK) != -1) {
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- if (eal_parse_sysfs_value(filename, &tmp) == 0)
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- dev->device.numa_node = tmp;
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- else
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- dev->device.numa_node = -1;
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- } else {
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- dev->device.numa_node = 0;
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- }
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-
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- pci_name_set(dev);
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-
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- /* parse resources */
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- snprintf(filename, sizeof(filename), "%s/resource", dirname);
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- if (pci_parse_sysfs_resource(filename, dev) < 0) {
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- RTE_LOG(ERR, EAL, "%s(): cannot parse resource\n", __func__);
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- free(dev);
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- return -1;
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- }
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-
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- /* parse driver */
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- snprintf(filename, sizeof(filename), "%s/driver", dirname);
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- ret = pci_get_kernel_driver_by_path(filename, driver, sizeof(driver));
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- if (ret < 0) {
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- RTE_LOG(ERR, EAL, "Fail to get kernel driver\n");
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- free(dev);
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- return -1;
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- }
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-
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- if (!ret) {
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- if (!strcmp(driver, "vfio-pci"))
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- dev->kdrv = RTE_PCI_KDRV_VFIO;
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- else if (!strcmp(driver, "igb_uio"))
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- dev->kdrv = RTE_PCI_KDRV_IGB_UIO;
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- else if (!strcmp(driver, "uio_pci_generic"))
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- dev->kdrv = RTE_PCI_KDRV_UIO_GENERIC;
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- else
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- dev->kdrv = RTE_PCI_KDRV_UNKNOWN;
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- } else {
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- dev->kdrv = RTE_PCI_KDRV_NONE;
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- return 0;
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- }
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- /* device is valid, add in list (sorted) */
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- if (TAILQ_EMPTY(&rte_pci_bus.device_list)) {
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- rte_pci_add_device(dev);
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- } else {
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- struct rte_pci_device *dev2;
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- int ret;
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-
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- TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) {
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- ret = rte_pci_addr_cmp(&dev->addr, &dev2->addr);
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- if (ret > 0)
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- continue;
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-
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- if (ret < 0) {
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- rte_pci_insert_device(dev2, dev);
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- } else { /* already registered */
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- if (!rte_dev_is_probed(&dev2->device)) {
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- dev2->kdrv = dev->kdrv;
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- dev2->max_vfs = dev->max_vfs;
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- dev2->id = dev->id;
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- pci_name_set(dev2);
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- memmove(dev2->mem_resource,
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- dev->mem_resource,
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- sizeof(dev->mem_resource));
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- } else {
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- /**
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- * If device is plugged and driver is
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- * probed already, (This happens when
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- * we call rte_dev_probe which will
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- * scan all device on the bus) we don't
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- * need to do anything here unless...
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- **/
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- if (dev2->kdrv != dev->kdrv ||
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- dev2->max_vfs != dev->max_vfs ||
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- memcmp(&dev2->id, &dev->id, sizeof(dev2->id)))
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- /*
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- * This should not happens.
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- * But it is still possible if
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- * we unbind a device from
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- * vfio or uio before hotplug
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- * remove and rebind it with
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- * a different configure.
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- * So we just print out the
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- * error as an alarm.
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- */
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- RTE_LOG(ERR, EAL, "Unexpected device scan at %s!\n",
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- filename);
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- else if (dev2->device.devargs !=
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- dev->device.devargs) {
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- rte_devargs_remove(dev2->device.devargs);
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- pci_name_set(dev2);
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- }
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- }
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- free(dev);
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- }
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- return 0;
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- }
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-
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- rte_pci_add_device(dev);
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- }
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-
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- return 0;
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-}
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-
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-/*
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- * split up a pci address into its constituent parts.
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- */
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-static int
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-parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
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-{
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- /* first split on ':' */
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- union splitaddr {
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- struct {
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- char *domain;
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- char *bus;
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- char *devid;
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- char *function;
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- };
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- char *str[PCI_FMT_NVAL]; /* last element-separator is "." not ":" */
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- } splitaddr;
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-
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|
|
- char *buf_copy = strndup(buf, bufsize);
|
|
|
- if (buf_copy == NULL)
|
|
|
- return -1;
|
|
|
-
|
|
|
- if (rte_strsplit(buf_copy, bufsize, splitaddr.str, PCI_FMT_NVAL, ':')
|
|
|
- != PCI_FMT_NVAL - 1)
|
|
|
- goto error;
|
|
|
- /* final split is on '.' between devid and function */
|
|
|
- splitaddr.function = strchr(splitaddr.devid,'.');
|
|
|
- if (splitaddr.function == NULL)
|
|
|
- goto error;
|
|
|
- *splitaddr.function++ = '\0';
|
|
|
-
|
|
|
- /* now convert to int values */
|
|
|
- errno = 0;
|
|
|
- addr->domain = strtoul(splitaddr.domain, NULL, 16);
|
|
|
- addr->bus = strtoul(splitaddr.bus, NULL, 16);
|
|
|
- addr->devid = strtoul(splitaddr.devid, NULL, 16);
|
|
|
- addr->function = strtoul(splitaddr.function, NULL, 10);
|
|
|
- if (errno != 0)
|
|
|
- goto error;
|
|
|
-
|
|
|
- free(buf_copy); /* free the copy made with strdup */
|
|
|
- return 0;
|
|
|
-error:
|
|
|
- free(buf_copy);
|
|
|
- return -1;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Scan the content of the PCI bus, and the devices in the devices
|
|
|
- * list
|
|
|
- */
|
|
|
-int
|
|
|
-rte_pci_scan(void)
|
|
|
-{
|
|
|
- struct dirent *e;
|
|
|
- DIR *dir;
|
|
|
- char dirname[PATH_MAX];
|
|
|
- struct rte_pci_addr addr;
|
|
|
-
|
|
|
- /* for debug purposes, PCI can be disabled */
|
|
|
- if (!rte_eal_has_pci())
|
|
|
- return 0;
|
|
|
-
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- if (!pci_vfio_is_enabled())
|
|
|
- RTE_LOG(DEBUG, EAL, "VFIO PCI modules not loaded\n");
|
|
|
-#endif
|
|
|
-
|
|
|
- dir = opendir(rte_pci_get_sysfs_path());
|
|
|
- if (dir == NULL) {
|
|
|
- RTE_LOG(ERR, EAL, "%s(): opendir failed: %s\n",
|
|
|
- __func__, strerror(errno));
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- while ((e = readdir(dir)) != NULL) {
|
|
|
- if (e->d_name[0] == '.')
|
|
|
- continue;
|
|
|
-
|
|
|
- if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &addr) != 0)
|
|
|
- continue;
|
|
|
-
|
|
|
- if (rte_pci_ignore_device(&addr))
|
|
|
- continue;
|
|
|
-
|
|
|
- snprintf(dirname, sizeof(dirname), "%s/%s",
|
|
|
- rte_pci_get_sysfs_path(), e->d_name);
|
|
|
-
|
|
|
- if (pci_scan_one(dirname, &addr) < 0)
|
|
|
- goto error;
|
|
|
- }
|
|
|
- closedir(dir);
|
|
|
- return 0;
|
|
|
-
|
|
|
-error:
|
|
|
- closedir(dir);
|
|
|
- return -1;
|
|
|
-}
|
|
|
-
|
|
|
-#if defined(RTE_ARCH_X86)
|
|
|
-bool
|
|
|
-pci_device_iommu_support_va(const struct rte_pci_device *dev)
|
|
|
-{
|
|
|
-#define VTD_CAP_MGAW_SHIFT 16
|
|
|
-#define VTD_CAP_MGAW_MASK (0x3fULL << VTD_CAP_MGAW_SHIFT)
|
|
|
- const struct rte_pci_addr *addr = &dev->addr;
|
|
|
- char filename[PATH_MAX];
|
|
|
- FILE *fp;
|
|
|
- uint64_t mgaw, vtd_cap_reg = 0;
|
|
|
-
|
|
|
- snprintf(filename, sizeof(filename),
|
|
|
- "%s/" PCI_PRI_FMT "/iommu/intel-iommu/cap",
|
|
|
- rte_pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
|
|
|
- addr->function);
|
|
|
-
|
|
|
- fp = fopen(filename, "r");
|
|
|
- if (fp == NULL) {
|
|
|
- /* We don't have an Intel IOMMU, assume VA supported */
|
|
|
- if (errno == ENOENT)
|
|
|
- return true;
|
|
|
-
|
|
|
- RTE_LOG(ERR, EAL, "%s(): can't open %s: %s\n",
|
|
|
- __func__, filename, strerror(errno));
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- /* We have an Intel IOMMU */
|
|
|
- if (fscanf(fp, "%" PRIx64, &vtd_cap_reg) != 1) {
|
|
|
- RTE_LOG(ERR, EAL, "%s(): can't read %s\n", __func__, filename);
|
|
|
- fclose(fp);
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- fclose(fp);
|
|
|
-
|
|
|
- mgaw = ((vtd_cap_reg & VTD_CAP_MGAW_MASK) >> VTD_CAP_MGAW_SHIFT) + 1;
|
|
|
-
|
|
|
- /*
|
|
|
- * Assuming there is no limitation by now. We can not know at this point
|
|
|
- * because the memory has not been initialized yet. Setting the dma mask
|
|
|
- * will force a check once memory initialization is done. We can not do
|
|
|
- * a fallback to IOVA PA now, but if the dma check fails, the error
|
|
|
- * message should advice for using '--iova-mode pa' if IOVA VA is the
|
|
|
- * current mode.
|
|
|
- */
|
|
|
- rte_mem_set_dma_mask(mgaw);
|
|
|
- return true;
|
|
|
-}
|
|
|
-#elif defined(RTE_ARCH_PPC_64)
|
|
|
-bool
|
|
|
-pci_device_iommu_support_va(__rte_unused const struct rte_pci_device *dev)
|
|
|
-{
|
|
|
- /*
|
|
|
- * IOMMU is always present on a PowerNV host (IOMMUv2).
|
|
|
- * IOMMU is also present in a KVM/QEMU VM (IOMMUv1) but is not
|
|
|
- * currently supported by DPDK. Test for our current environment
|
|
|
- * and report VA support as appropriate.
|
|
|
- */
|
|
|
-
|
|
|
- char *line = NULL;
|
|
|
- size_t len = 0;
|
|
|
- char filename[PATH_MAX] = "/proc/cpuinfo";
|
|
|
- FILE *fp = fopen(filename, "r");
|
|
|
- bool ret = false;
|
|
|
-
|
|
|
- if (fp == NULL) {
|
|
|
- RTE_LOG(ERR, EAL, "%s(): can't open %s: %s\n",
|
|
|
- __func__, filename, strerror(errno));
|
|
|
- return ret;
|
|
|
- }
|
|
|
-
|
|
|
- /* Check for a PowerNV platform */
|
|
|
- while (getline(&line, &len, fp) != -1) {
|
|
|
- if (strstr(line, "platform") != NULL)
|
|
|
- continue;
|
|
|
-
|
|
|
- if (strstr(line, "PowerNV") != NULL) {
|
|
|
- RTE_LOG(DEBUG, EAL, "Running on a PowerNV system\n");
|
|
|
- ret = true;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- free(line);
|
|
|
- fclose(fp);
|
|
|
- return ret;
|
|
|
-}
|
|
|
-#else
|
|
|
-bool
|
|
|
-pci_device_iommu_support_va(__rte_unused const struct rte_pci_device *dev)
|
|
|
-{
|
|
|
- return true;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-enum rte_iova_mode
|
|
|
-pci_device_iova_mode(const struct rte_pci_driver *pdrv,
|
|
|
- const struct rte_pci_device *pdev)
|
|
|
-{
|
|
|
- enum rte_iova_mode iova_mode = RTE_IOVA_DC;
|
|
|
-
|
|
|
- switch (pdev->kdrv) {
|
|
|
- case RTE_PCI_KDRV_VFIO: {
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- static int is_vfio_noiommu_enabled = -1;
|
|
|
-
|
|
|
- if (is_vfio_noiommu_enabled == -1) {
|
|
|
- if (rte_vfio_noiommu_is_enabled() == 1)
|
|
|
- is_vfio_noiommu_enabled = 1;
|
|
|
- else
|
|
|
- is_vfio_noiommu_enabled = 0;
|
|
|
- }
|
|
|
- if (is_vfio_noiommu_enabled != 0)
|
|
|
- iova_mode = RTE_IOVA_PA;
|
|
|
- else if ((pdrv->drv_flags & RTE_PCI_DRV_NEED_IOVA_AS_VA) != 0)
|
|
|
- iova_mode = RTE_IOVA_VA;
|
|
|
-#endif
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
- iova_mode = RTE_IOVA_PA;
|
|
|
- break;
|
|
|
-
|
|
|
- default:
|
|
|
- if ((pdrv->drv_flags & RTE_PCI_DRV_NEED_IOVA_AS_VA) != 0)
|
|
|
- iova_mode = RTE_IOVA_VA;
|
|
|
- break;
|
|
|
- }
|
|
|
- return iova_mode;
|
|
|
-}
|
|
|
-
|
|
|
-/* Read PCI config space. */
|
|
|
-int rte_pci_read_config(const struct rte_pci_device *device,
|
|
|
- void *buf, size_t len, off_t offset)
|
|
|
-{
|
|
|
- char devname[RTE_DEV_NAME_MAX_LEN] = "";
|
|
|
- const struct rte_intr_handle *intr_handle = &device->intr_handle;
|
|
|
-
|
|
|
- switch (device->kdrv) {
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
- return pci_uio_read_config(intr_handle, buf, len, offset);
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- return pci_vfio_read_config(intr_handle, buf, len, offset);
|
|
|
-#endif
|
|
|
- default:
|
|
|
- rte_pci_device_name(&device->addr, devname,
|
|
|
- RTE_DEV_NAME_MAX_LEN);
|
|
|
- RTE_LOG(ERR, EAL,
|
|
|
- "Unknown driver type for %s\n", devname);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/* Write PCI config space. */
|
|
|
-int rte_pci_write_config(const struct rte_pci_device *device,
|
|
|
- const void *buf, size_t len, off_t offset)
|
|
|
-{
|
|
|
- char devname[RTE_DEV_NAME_MAX_LEN] = "";
|
|
|
- const struct rte_intr_handle *intr_handle = &device->intr_handle;
|
|
|
-
|
|
|
- switch (device->kdrv) {
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
- return pci_uio_write_config(intr_handle, buf, len, offset);
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- return pci_vfio_write_config(intr_handle, buf, len, offset);
|
|
|
-#endif
|
|
|
- default:
|
|
|
- rte_pci_device_name(&device->addr, devname,
|
|
|
- RTE_DEV_NAME_MAX_LEN);
|
|
|
- RTE_LOG(ERR, EAL,
|
|
|
- "Unknown driver type for %s\n", devname);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-#if defined(RTE_ARCH_X86)
|
|
|
-static int
|
|
|
-pci_ioport_map(struct rte_pci_device *dev, int bar __rte_unused,
|
|
|
- struct rte_pci_ioport *p)
|
|
|
-{
|
|
|
- uint16_t start, end;
|
|
|
- FILE *fp;
|
|
|
- char *line = NULL;
|
|
|
- char pci_id[16];
|
|
|
- int found = 0;
|
|
|
- size_t linesz;
|
|
|
-
|
|
|
- if (rte_eal_iopl_init() != 0) {
|
|
|
- RTE_LOG(ERR, EAL, "%s(): insufficient ioport permissions for PCI device %s\n",
|
|
|
- __func__, dev->name);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
|
|
|
- dev->addr.domain, dev->addr.bus,
|
|
|
- dev->addr.devid, dev->addr.function);
|
|
|
-
|
|
|
- fp = fopen("/proc/ioports", "r");
|
|
|
- if (fp == NULL) {
|
|
|
- RTE_LOG(ERR, EAL, "%s(): can't open ioports\n", __func__);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- while (getdelim(&line, &linesz, '\n', fp) > 0) {
|
|
|
- char *ptr = line;
|
|
|
- char *left;
|
|
|
- int n;
|
|
|
-
|
|
|
- n = strcspn(ptr, ":");
|
|
|
- ptr[n] = 0;
|
|
|
- left = &ptr[n + 1];
|
|
|
-
|
|
|
- while (*left && isspace(*left))
|
|
|
- left++;
|
|
|
-
|
|
|
- if (!strncmp(left, pci_id, strlen(pci_id))) {
|
|
|
- found = 1;
|
|
|
-
|
|
|
- while (*ptr && isspace(*ptr))
|
|
|
- ptr++;
|
|
|
-
|
|
|
- sscanf(ptr, "%04hx-%04hx", &start, &end);
|
|
|
-
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- free(line);
|
|
|
- fclose(fp);
|
|
|
-
|
|
|
- if (!found)
|
|
|
- return -1;
|
|
|
-
|
|
|
- p->base = start;
|
|
|
- RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%x\n", start);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-int
|
|
|
-rte_pci_ioport_map(struct rte_pci_device *dev, int bar,
|
|
|
- struct rte_pci_ioport *p)
|
|
|
-{
|
|
|
- int ret = -1;
|
|
|
-
|
|
|
- switch (dev->kdrv) {
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- if (pci_vfio_is_enabled())
|
|
|
- ret = pci_vfio_ioport_map(dev, bar, p);
|
|
|
- break;
|
|
|
-#endif
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- ret = pci_uio_ioport_map(dev, bar, p);
|
|
|
- break;
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
-#if defined(RTE_ARCH_X86)
|
|
|
- ret = pci_ioport_map(dev, bar, p);
|
|
|
-#else
|
|
|
- ret = pci_uio_ioport_map(dev, bar, p);
|
|
|
-#endif
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (!ret)
|
|
|
- p->dev = dev;
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-rte_pci_ioport_read(struct rte_pci_ioport *p,
|
|
|
- void *data, size_t len, off_t offset)
|
|
|
-{
|
|
|
- switch (p->dev->kdrv) {
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- pci_vfio_ioport_read(p, data, len, offset);
|
|
|
- break;
|
|
|
-#endif
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- pci_uio_ioport_read(p, data, len, offset);
|
|
|
- break;
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
- pci_uio_ioport_read(p, data, len, offset);
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-void
|
|
|
-rte_pci_ioport_write(struct rte_pci_ioport *p,
|
|
|
- const void *data, size_t len, off_t offset)
|
|
|
-{
|
|
|
- switch (p->dev->kdrv) {
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- pci_vfio_ioport_write(p, data, len, offset);
|
|
|
- break;
|
|
|
-#endif
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- pci_uio_ioport_write(p, data, len, offset);
|
|
|
- break;
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
- pci_uio_ioport_write(p, data, len, offset);
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-int
|
|
|
-rte_pci_ioport_unmap(struct rte_pci_ioport *p)
|
|
|
-{
|
|
|
- int ret = -1;
|
|
|
-
|
|
|
- switch (p->dev->kdrv) {
|
|
|
-#ifdef VFIO_PRESENT
|
|
|
- case RTE_PCI_KDRV_VFIO:
|
|
|
- if (pci_vfio_is_enabled())
|
|
|
- ret = pci_vfio_ioport_unmap(p);
|
|
|
- break;
|
|
|
-#endif
|
|
|
- case RTE_PCI_KDRV_IGB_UIO:
|
|
|
- ret = pci_uio_ioport_unmap(p);
|
|
|
- break;
|
|
|
- case RTE_PCI_KDRV_UIO_GENERIC:
|
|
|
-#if defined(RTE_ARCH_X86)
|
|
|
- ret = 0;
|
|
|
-#else
|
|
|
- ret = pci_uio_ioport_unmap(p);
|
|
|
-#endif
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|