Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

15 files changed, 4946 insertions, 0 deletions

diff --git a/src/spdk/dpdk/drivers/bus/pci/Makefile b/src/spdk/dpdk/drivers/bus/pci/Makefile
new file mode 100644
index 000000000..f4102d0a7
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/Makefile
@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2017 6WIND S.A.
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+LIB = librte_bus_pci.a
+EXPORT_MAP := rte_bus_pci_version.map
+
+CFLAGS := -I$(SRCDIR) $(CFLAGS)
+CFLAGS += -O3 $(WERROR_FLAGS)
+
+ifneq ($(CONFIG_RTE_EXEC_ENV_LINUX),)
+SYSTEM := linux
+endif
+ifneq ($(CONFIG_RTE_EXEC_ENV_FREEBSD),)
+SYSTEM := bsd
+endif
+
+CFLAGS += -I$(RTE_SDK)/drivers/bus/pci/$(SYSTEM)
+CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common
+
+LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
+LDLIBS += -lrte_pci -lrte_kvargs
+
+include $(RTE_SDK)/drivers/bus/pci/$(SYSTEM)/Makefile
+SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) := $(addprefix $(SYSTEM)/,$(SRCS))
+SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_params.c
+SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_common.c
+SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_common_uio.c
+
+SYMLINK-$(CONFIG_RTE_LIBRTE_PCI_BUS)-include += rte_bus_pci.h
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/src/spdk/dpdk/drivers/bus/pci/bsd/Makefile b/src/spdk/dpdk/drivers/bus/pci/bsd/Makefile
new file mode 100644
index 000000000..c1b54c05e
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/bsd/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2017 6WIND S.A.
+
+SRCS += pci.c
diff --git a/src/spdk/dpdk/drivers/bus/pci/bsd/pci.c b/src/spdk/dpdk/drivers/bus/pci/bsd/pci.c
new file mode 100644
index 000000000..6ec27b4b5
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/bsd/pci.c
@@ -0,0 +1,676 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
+#include <limits.h>
+#include <sys/queue.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/pciio.h>
+#include <dev/pci/pcireg.h>
+
+#if defined(RTE_ARCH_X86)
+#include <machine/cpufunc.h>
+#endif
+
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_common.h>
+#include <rte_launch.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_malloc.h>
+#include <rte_string_fns.h>
+#include <rte_debug.h>
+#include <rte_devargs.h>
+
+#include "eal_filesystem.h"
+#include "private.h"
+
+/**
+ * @file
+ * PCI probing under BSD
+ *
+ * This code is used to simulate a PCI probe by parsing information in
+ * sysfs. Moreover, when a registered driver matches a device, the
+ * kernel driver currently using it is unloaded and replaced by
+ * igb_uio module, which is a very minimal userland driver for Intel
+ * network card, only providing access to PCI BAR to applications, and
+ * enabling bus master.
+ */
+
+extern struct rte_pci_bus rte_pci_bus;
+
+/* Map pci device */
+int
+rte_pci_map_device(struct rte_pci_device *dev)
+{
+	int ret = -1;
+
+	/* try mapping the NIC resources */
+	switch (dev->kdrv) {
+	case RTE_KDRV_NIC_UIO:
+		/* map resources for devices that use uio */
+		ret = pci_uio_map_resource(dev);
+		break;
+	default:
+		RTE_LOG(DEBUG, EAL,
+			"  Not managed by a supported kernel driver, skipped\n");
+		ret = 1;
+		break;
+	}
+
+	return ret;
+}
+
+/* Unmap pci device */
+void
+rte_pci_unmap_device(struct rte_pci_device *dev)
+{
+	/* try unmapping the NIC resources */
+	switch (dev->kdrv) {
+	case RTE_KDRV_NIC_UIO:
+		/* unmap resources for devices that use uio */
+		pci_uio_unmap_resource(dev);
+		break;
+	default:
+		RTE_LOG(DEBUG, EAL,
+			"  Not managed by a supported kernel driver, skipped\n");
+		break;
+	}
+}
+
+void
+pci_uio_free_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource *uio_res)
+{
+	rte_free(uio_res);
+
+	if (dev->intr_handle.fd) {
+		close(dev->intr_handle.fd);
+		dev->intr_handle.fd = -1;
+		dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+	}
+}
+
+int
+pci_uio_alloc_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource **uio_res)
+{
+	char devname[PATH_MAX]; /* contains the /dev/uioX */
+	struct rte_pci_addr *loc;
+
+	loc = &dev->addr;
+
+	snprintf(devname, sizeof(devname), "/dev/uio@pci:%u:%u:%u",
+			dev->addr.bus, dev->addr.devid, dev->addr.function);
+
+	if (access(devname, O_RDWR) < 0) {
+		RTE_LOG(WARNING, EAL, "  "PCI_PRI_FMT" not managed by UIO driver, "
+				"skipping\n", loc->domain, loc->bus, loc->devid, loc->function);
+		return 1;
+	}
+
+	/* save fd if in primary process */
+	dev->intr_handle.fd = open(devname, O_RDWR);
+	if (dev->intr_handle.fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+			devname, strerror(errno));
+		goto error;
+	}
+	dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
+
+	/* allocate the mapping details for secondary processes*/
+	*uio_res = rte_zmalloc("UIO_RES", sizeof(**uio_res), 0);
+	if (*uio_res == NULL) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot store uio mmap details\n", __func__);
+		goto error;
+	}
+
+	strlcpy((*uio_res)->path, devname, sizeof((*uio_res)->path));
+	memcpy(&(*uio_res)->pci_addr, &dev->addr, sizeof((*uio_res)->pci_addr));
+
+	return 0;
+
+error:
+	pci_uio_free_resource(dev, *uio_res);
+	return -1;
+}
+
+int
+pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
+		struct mapped_pci_resource *uio_res, int map_idx)
+{
+	int fd;
+	char *devname;
+	void *mapaddr;
+	uint64_t offset;
+	uint64_t pagesz;
+	struct pci_map *maps;
+
+	maps = uio_res->maps;
+	devname = uio_res->path;
+	pagesz = sysconf(_SC_PAGESIZE);
+
+	/* allocate memory to keep path */
+	maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0);
+	if (maps[map_idx].path == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n",
+				strerror(errno));
+		return -1;
+	}
+
+	/*
+	 * open resource file, to mmap it
+	 */
+	fd = open(devname, O_RDWR);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+				devname, strerror(errno));
+		goto error;
+	}
+
+	/* if matching map is found, then use it */
+	offset = res_idx * pagesz;
+	mapaddr = pci_map_resource(NULL, fd, (off_t)offset,
+			(size_t)dev->mem_resource[res_idx].len, 0);
+	close(fd);
+	if (mapaddr == MAP_FAILED)
+		goto error;
+
+	maps[map_idx].phaddr = dev->mem_resource[res_idx].phys_addr;
+	maps[map_idx].size = dev->mem_resource[res_idx].len;
+	maps[map_idx].addr = mapaddr;
+	maps[map_idx].offset = offset;
+	strcpy(maps[map_idx].path, devname);
+	dev->mem_resource[res_idx].addr = mapaddr;
+
+	return 0;
+
+error:
+	rte_free(maps[map_idx].path);
+	return -1;
+}
+
+static int
+pci_scan_one(int dev_pci_fd, struct pci_conf *conf)
+{
+	struct rte_pci_device *dev;
+	struct pci_bar_io bar;
+	unsigned i, max;
+
+	dev = malloc(sizeof(*dev));
+	if (dev == NULL) {
+		return -1;
+	}
+
+	memset(dev, 0, sizeof(*dev));
+	dev->device.bus = &rte_pci_bus.bus;
+
+	dev->addr.domain = conf->pc_sel.pc_domain;
+	dev->addr.bus = conf->pc_sel.pc_bus;
+	dev->addr.devid = conf->pc_sel.pc_dev;
+	dev->addr.function = conf->pc_sel.pc_func;
+
+	/* get vendor id */
+	dev->id.vendor_id = conf->pc_vendor;
+
+	/* get device id */
+	dev->id.device_id = conf->pc_device;
+
+	/* get subsystem_vendor id */
+	dev->id.subsystem_vendor_id = conf->pc_subvendor;
+
+	/* get subsystem_device id */
+	dev->id.subsystem_device_id = conf->pc_subdevice;
+
+	/* get class id */
+	dev->id.class_id = (conf->pc_class << 16) |
+			   (conf->pc_subclass << 8) |
+			   (conf->pc_progif);
+
+	/* TODO: get max_vfs */
+	dev->max_vfs = 0;
+
+	/* FreeBSD has no NUMA support (yet) */
+	dev->device.numa_node = 0;
+
+	pci_name_set(dev);
+
+	/* FreeBSD has only one pass through driver */
+	dev->kdrv = RTE_KDRV_NIC_UIO;
+
+	/* parse resources */
+	switch (conf->pc_hdr & PCIM_HDRTYPE) {
+	case PCIM_HDRTYPE_NORMAL:
+		max = PCIR_MAX_BAR_0;
+		break;
+	case PCIM_HDRTYPE_BRIDGE:
+		max = PCIR_MAX_BAR_1;
+		break;
+	case PCIM_HDRTYPE_CARDBUS:
+		max = PCIR_MAX_BAR_2;
+		break;
+	default:
+		goto skipdev;
+	}
+
+	for (i = 0; i <= max; i++) {
+		bar.pbi_sel = conf->pc_sel;
+		bar.pbi_reg = PCIR_BAR(i);
+		if (ioctl(dev_pci_fd, PCIOCGETBAR, &bar) < 0)
+			continue;
+
+		dev->mem_resource[i].len = bar.pbi_length;
+		if (PCI_BAR_IO(bar.pbi_base)) {
+			dev->mem_resource[i].addr = (void *)(bar.pbi_base & ~((uint64_t)0xf));
+			continue;
+		}
+		dev->mem_resource[i].phys_addr = bar.pbi_base & ~((uint64_t)0xf);
+	}
+
+	/* device is valid, add in list (sorted) */
+	if (TAILQ_EMPTY(&rte_pci_bus.device_list)) {
+		rte_pci_add_device(dev);
+	}
+	else {
+		struct rte_pci_device *dev2 = NULL;
+		int ret;
+
+		TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) {
+			ret = rte_pci_addr_cmp(&dev->addr, &dev2->addr);
+			if (ret > 0)
+				continue;
+			else if (ret < 0) {
+				rte_pci_insert_device(dev2, dev);
+			} else { /* already registered */
+				dev2->kdrv = dev->kdrv;
+				dev2->max_vfs = dev->max_vfs;
+				pci_name_set(dev2);
+				memmove(dev2->mem_resource,
+					dev->mem_resource,
+					sizeof(dev->mem_resource));
+				free(dev);
+			}
+			return 0;
+		}
+		rte_pci_add_device(dev);
+	}
+
+	return 0;
+
+skipdev:
+	free(dev);
+	return 0;
+}
+
+/*
+ * Scan the content of the PCI bus, and add the devices in the devices
+ * list. Call pci_scan_one() for each pci entry found.
+ */
+int
+rte_pci_scan(void)
+{
+	int fd;
+	unsigned dev_count = 0;
+	struct pci_conf matches[16];
+	struct pci_conf_io conf_io = {
+			.pat_buf_len = 0,
+			.num_patterns = 0,
+			.patterns = NULL,
+			.match_buf_len = sizeof(matches),
+			.matches = &matches[0],
+	};
+	struct rte_pci_addr pci_addr;
+
+	/* for debug purposes, PCI can be disabled */
+	if (!rte_eal_has_pci())
+		return 0;
+
+	fd = open("/dev/pci", O_RDONLY);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__);
+		goto error;
+	}
+
+	do {
+		unsigned i;
+		if (ioctl(fd, PCIOCGETCONF, &conf_io) < 0) {
+			RTE_LOG(ERR, EAL, "%s(): error with ioctl on /dev/pci: %s\n",
+					__func__, strerror(errno));
+			goto error;
+		}
+
+		for (i = 0; i < conf_io.num_matches; i++) {
+			pci_addr.domain = matches[i].pc_sel.pc_domain;
+			pci_addr.bus = matches[i].pc_sel.pc_bus;
+			pci_addr.devid = matches[i].pc_sel.pc_dev;
+			pci_addr.function = matches[i].pc_sel.pc_func;
+
+			if (rte_pci_ignore_device(&pci_addr))
+				continue;
+
+			if (pci_scan_one(fd, &matches[i]) < 0)
+				goto error;
+		}
+
+		dev_count += conf_io.num_matches;
+	} while(conf_io.status == PCI_GETCONF_MORE_DEVS);
+
+	close(fd);
+
+	RTE_LOG(DEBUG, EAL, "PCI scan found %u devices\n", dev_count);
+	return 0;
+
+error:
+	if (fd >= 0)
+		close(fd);
+	return -1;
+}
+
+bool
+pci_device_iommu_support_va(__rte_unused const struct rte_pci_device *dev)
+{
+	return false;
+}
+
+enum rte_iova_mode
+pci_device_iova_mode(const struct rte_pci_driver *pdrv __rte_unused,
+		     const struct rte_pci_device *pdev)
+{
+	/* Supports only RTE_KDRV_NIC_UIO */
+	if (pdev->kdrv != RTE_KDRV_NIC_UIO)
+		RTE_LOG(DEBUG, EAL, "Unsupported kernel driver? Defaulting to IOVA as 'PA'\n");
+
+	return RTE_IOVA_PA;
+}
+
+int
+pci_update_device(const struct rte_pci_addr *addr)
+{
+	int fd;
+	struct pci_conf matches[2];
+	struct pci_match_conf match = {
+		.pc_sel = {
+			.pc_domain = addr->domain,
+			.pc_bus = addr->bus,
+			.pc_dev = addr->devid,
+			.pc_func = addr->function,
+		},
+	};
+	struct pci_conf_io conf_io = {
+		.pat_buf_len = 0,
+		.num_patterns = 1,
+		.patterns = &match,
+		.match_buf_len = sizeof(matches),
+		.matches = &matches[0],
+	};
+
+	fd = open("/dev/pci", O_RDONLY);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__);
+		goto error;
+	}
+
+	if (ioctl(fd, PCIOCGETCONF, &conf_io) < 0) {
+		RTE_LOG(ERR, EAL, "%s(): error with ioctl on /dev/pci: %s\n",
+				__func__, strerror(errno));
+		goto error;
+	}
+
+	if (conf_io.num_matches != 1)
+		goto error;
+
+	if (pci_scan_one(fd, &matches[0]) < 0)
+		goto error;
+
+	close(fd);
+
+	return 0;
+
+error:
+	if (fd >= 0)
+		close(fd);
+	return -1;
+}
+
+/* Read PCI config space. */
+int rte_pci_read_config(const struct rte_pci_device *dev,
+		void *buf, size_t len, off_t offset)
+{
+	int fd = -1;
+	int size;
+	/* Copy Linux implementation's behaviour */
+	const int return_len = len;
+	struct pci_io pi = {
+		.pi_sel = {
+			.pc_domain = dev->addr.domain,
+			.pc_bus = dev->addr.bus,
+			.pc_dev = dev->addr.devid,
+			.pc_func = dev->addr.function,
+		},
+		.pi_reg = offset,
+	};
+
+	fd = open("/dev/pci", O_RDWR);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__);
+		goto error;
+	}
+
+	while (len > 0) {
+		size = (len >= 4) ? 4 : ((len >= 2) ? 2 : 1);
+		pi.pi_width = size;
+
+		if (ioctl(fd, PCIOCREAD, &pi) < 0)
+			goto error;
+		memcpy(buf, &pi.pi_data, size);
+
+		buf = (char *)buf + size;
+		pi.pi_reg += size;
+		len -= size;
+	}
+	close(fd);
+
+	return return_len;
+
+ error:
+	if (fd >= 0)
+		close(fd);
+	return -1;
+}
+
+/* Write PCI config space. */
+int rte_pci_write_config(const struct rte_pci_device *dev,
+		const void *buf, size_t len, off_t offset)
+{
+	int fd = -1;
+
+	struct pci_io pi = {
+		.pi_sel = {
+			.pc_domain = dev->addr.domain,
+			.pc_bus = dev->addr.bus,
+			.pc_dev = dev->addr.devid,
+			.pc_func = dev->addr.function,
+		},
+		.pi_reg = offset,
+		.pi_data = *(const uint32_t *)buf,
+		.pi_width = len,
+	};
+
+	if (len == 3 || len > sizeof(pi.pi_data)) {
+		RTE_LOG(ERR, EAL, "%s(): invalid pci read length\n", __func__);
+		goto error;
+	}
+
+	memcpy(&pi.pi_data, buf, len);
+
+	fd = open("/dev/pci", O_RDWR);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__);
+		goto error;
+	}
+
+	if (ioctl(fd, PCIOCWRITE, &pi) < 0)
+		goto error;
+
+	close(fd);
+	return 0;
+
+ error:
+	if (fd >= 0)
+		close(fd);
+	return -1;
+}
+
+int
+rte_pci_ioport_map(struct rte_pci_device *dev, int bar,
+		struct rte_pci_ioport *p)
+{
+	int ret;
+
+	switch (dev->kdrv) {
+#if defined(RTE_ARCH_X86)
+	case RTE_KDRV_NIC_UIO:
+		if (rte_eal_iopl_init() != 0) {
+			RTE_LOG(ERR, EAL, "%s(): insufficient ioport permissions for PCI device %s\n",
+				__func__, dev->name);
+			return -1;
+		}
+		if ((uintptr_t) dev->mem_resource[bar].addr <= UINT16_MAX) {
+			p->base = (uintptr_t)dev->mem_resource[bar].addr;
+			ret = 0;
+		} else
+			ret = -1;
+		break;
+#endif
+	default:
+		ret = -1;
+		break;
+	}
+
+	if (!ret)
+		p->dev = dev;
+
+	return ret;
+}
+
+static void
+pci_uio_ioport_read(struct rte_pci_ioport *p,
+		void *data, size_t len, off_t offset)
+{
+#if defined(RTE_ARCH_X86)
+	uint8_t *d;
+	int size;
+	unsigned short reg = p->base + offset;
+
+	for (d = data; len > 0; d += size, reg += size, len -= size) {
+		if (len >= 4) {
+			size = 4;
+			*(uint32_t *)d = inl(reg);
+		} else if (len >= 2) {
+			size = 2;
+			*(uint16_t *)d = inw(reg);
+		} else {
+			size = 1;
+			*d = inb(reg);
+		}
+	}
+#else
+	RTE_SET_USED(p);
+	RTE_SET_USED(data);
+	RTE_SET_USED(len);
+	RTE_SET_USED(offset);
+#endif
+}
+
+void
+rte_pci_ioport_read(struct rte_pci_ioport *p,
+		void *data, size_t len, off_t offset)
+{
+	switch (p->dev->kdrv) {
+	case RTE_KDRV_NIC_UIO:
+		pci_uio_ioport_read(p, data, len, offset);
+		break;
+	default:
+		break;
+	}
+}
+
+static void
+pci_uio_ioport_write(struct rte_pci_ioport *p,
+		const void *data, size_t len, off_t offset)
+{
+#if defined(RTE_ARCH_X86)
+	const uint8_t *s;
+	int size;
+	unsigned short reg = p->base + offset;
+
+	for (s = data; len > 0; s += size, reg += size, len -= size) {
+		if (len >= 4) {
+			size = 4;
+			outl(reg, *(const uint32_t *)s);
+		} else if (len >= 2) {
+			size = 2;
+			outw(reg, *(const uint16_t *)s);
+		} else {
+			size = 1;
+			outb(reg, *s);
+		}
+	}
+#else
+	RTE_SET_USED(p);
+	RTE_SET_USED(data);
+	RTE_SET_USED(len);
+	RTE_SET_USED(offset);
+#endif
+}
+
+void
+rte_pci_ioport_write(struct rte_pci_ioport *p,
+		const void *data, size_t len, off_t offset)
+{
+	switch (p->dev->kdrv) {
+	case RTE_KDRV_NIC_UIO:
+		pci_uio_ioport_write(p, data, len, offset);
+		break;
+	default:
+		break;
+	}
+}
+
+int
+rte_pci_ioport_unmap(struct rte_pci_ioport *p)
+{
+	int ret;
+
+	switch (p->dev->kdrv) {
+#if defined(RTE_ARCH_X86)
+	case RTE_KDRV_NIC_UIO:
+		ret = 0;
+		break;
+#endif
+	default:
+		ret = -1;
+		break;
+	}
+
+	return ret;
+}
diff --git a/src/spdk/dpdk/drivers/bus/pci/linux/Makefile b/src/spdk/dpdk/drivers/bus/pci/linux/Makefile
new file mode 100644
index 000000000..90404468b
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/linux/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2017 6WIND S.A.
+
+SRCS += pci.c
+SRCS += pci_uio.c
+SRCS += pci_vfio.c
diff --git a/src/spdk/dpdk/drivers/bus/pci/linux/pci.c b/src/spdk/dpdk/drivers/bus/pci/linux/pci.c
new file mode 100644
index 000000000..313e8ffe6
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/linux/pci.c
@@ -0,0 +1,878 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <string.h>
+#include <dirent.h>
+
+#include <rte_log.h>
+#include <rte_bus.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_malloc.h>
+#include <rte_devargs.h>
+#include <rte_memcpy.h>
+#include <rte_vfio.h>
+
+#include "eal_filesystem.h"
+
+#include "private.h"
+#include "pci_init.h"
+
+/**
+ * @file
+ * PCI probing under linux
+ *
+ * This code is used to simulate a PCI probe by parsing information in sysfs.
+ * When a registered device matches a driver, it is then initialized with
+ * IGB_UIO driver (or doesn't initialize, if the device wasn't bound to it).
+ */
+
+extern struct rte_pci_bus rte_pci_bus;
+
+static int
+pci_get_kernel_driver_by_path(const char *filename, char *dri_name,
+			      size_t len)
+{
+	int count;
+	char path[PATH_MAX];
+	char *name;
+
+	if (!filename || !dri_name)
+		return -1;
+
+	count = readlink(filename, path, PATH_MAX);
+	if (count >= PATH_MAX)
+		return -1;
+
+	/* For device does not have a driver */
+	if (count < 0)
+		return 1;
+
+	path[count] = '\0';
+
+	name = strrchr(path, '/');
+	if (name) {
+		strlcpy(dri_name, name + 1, len);
+		return 0;
+	}
+
+	return -1;
+}
+
+/* Map pci device */
+int
+rte_pci_map_device(struct rte_pci_device *dev)
+{
+	int ret = -1;
+
+	/* try mapping the NIC resources using VFIO if it exists */
+	switch (dev->kdrv) {
+	case RTE_KDRV_VFIO:
+#ifdef VFIO_PRESENT
+		if (pci_vfio_is_enabled())
+			ret = pci_vfio_map_resource(dev);
+#endif
+		break;
+	case RTE_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
+		if (rte_eal_using_phys_addrs()) {
+			/* map resources for devices that use uio */
+			ret = pci_uio_map_resource(dev);
+		}
+		break;
+	default:
+		RTE_LOG(DEBUG, EAL,
+			"  Not managed by a supported kernel driver, skipped\n");
+		ret = 1;
+		break;
+	}
+
+	return ret;
+}
+
+/* Unmap pci device */
+void
+rte_pci_unmap_device(struct rte_pci_device *dev)
+{
+	/* try unmapping the NIC resources using VFIO if it exists */
+	switch (dev->kdrv) {
+	case RTE_KDRV_VFIO:
+#ifdef VFIO_PRESENT
+		if (pci_vfio_is_enabled())
+			pci_vfio_unmap_resource(dev);
+#endif
+		break;
+	case RTE_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
+		/* unmap resources for devices that use uio */
+		pci_uio_unmap_resource(dev);
+		break;
+	default:
+		RTE_LOG(DEBUG, EAL,
+			"  Not managed by a supported kernel driver, skipped\n");
+		break;
+	}
+}
+
+static int
+find_max_end_va(const struct rte_memseg_list *msl, void *arg)
+{
+	size_t sz = msl->len;
+	void *end_va = RTE_PTR_ADD(msl->base_va, sz);
+	void **max_va = arg;
+
+	if (*max_va < end_va)
+		*max_va = end_va;
+	return 0;
+}
+
+void *
+pci_find_max_end_va(void)
+{
+	void *va = NULL;
+
+	rte_memseg_list_walk(find_max_end_va, &va);
+	return va;
+}
+
+
+/* parse one line of the "resource" sysfs file (note that the 'line'
+ * string is modified)
+ */
+int
+pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
+	uint64_t *end_addr, uint64_t *flags)
+{
+	union pci_resource_info {
+		struct {
+			char *phys_addr;
+			char *end_addr;
+			char *flags;
+		};
+		char *ptrs[PCI_RESOURCE_FMT_NVAL];
+	} res_info;
+
+	if (rte_strsplit(line, len, res_info.ptrs, 3, ' ') != 3) {
+		RTE_LOG(ERR, EAL,
+			"%s(): bad resource format\n", __func__);
+		return -1;
+	}
+	errno = 0;
+	*phys_addr = strtoull(res_info.phys_addr, NULL, 16);
+	*end_addr = strtoull(res_info.end_addr, NULL, 16);
+	*flags = strtoull(res_info.flags, NULL, 16);
+	if (errno != 0) {
+		RTE_LOG(ERR, EAL,
+			"%s(): bad resource format\n", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* parse the "resource" sysfs file */
+static int
+pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
+{
+	FILE *f;
+	char buf[BUFSIZ];
+	int i;
+	uint64_t phys_addr, end_addr, flags;
+
+	f = fopen(filename, "r");
+	if (f == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot open sysfs resource\n");
+		return -1;
+	}
+
+	for (i = 0; i<PCI_MAX_RESOURCE; i++) {
+
+		if (fgets(buf, sizeof(buf), f) == NULL) {
+			RTE_LOG(ERR, EAL,
+				"%s(): cannot read resource\n", __func__);
+			goto error;
+		}
+		if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr,
+				&end_addr, &flags) < 0)
+			goto error;
+
+		if (flags & IORESOURCE_MEM) {
+			dev->mem_resource[i].phys_addr = phys_addr;
+			dev->mem_resource[i].len = end_addr - phys_addr + 1;
+			/* not mapped for now */
+			dev->mem_resource[i].addr = NULL;
+		}
+	}
+	fclose(f);
+	return 0;
+
+error:
+	fclose(f);
+	return -1;
+}
+
+/* Scan one pci sysfs entry, and fill the devices list from it. */
+static int
+pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
+{
+	char filename[PATH_MAX];
+	unsigned long tmp;
+	struct rte_pci_device *dev;
+	char driver[PATH_MAX];
+	int ret;
+
+	dev = malloc(sizeof(*dev));
+	if (dev == NULL)
+		return -1;
+
+	memset(dev, 0, sizeof(*dev));
+	dev->device.bus = &rte_pci_bus.bus;
+	dev->addr = *addr;
+
+	/* get vendor id */
+	snprintf(filename, sizeof(filename), "%s/vendor", dirname);
+	if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+		free(dev);
+		return -1;
+	}
+	dev->id.vendor_id = (uint16_t)tmp;
+
+	/* get device id */
+	snprintf(filename, sizeof(filename), "%s/device", dirname);
+	if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+		free(dev);
+		return -1;
+	}
+	dev->id.device_id = (uint16_t)tmp;
+
+	/* get subsystem_vendor id */
+	snprintf(filename, sizeof(filename), "%s/subsystem_vendor",
+		 dirname);
+	if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+		free(dev);
+		return -1;
+	}
+	dev->id.subsystem_vendor_id = (uint16_t)tmp;
+
+	/* get subsystem_device id */
+	snprintf(filename, sizeof(filename), "%s/subsystem_device",
+		 dirname);
+	if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+		free(dev);
+		return -1;
+	}
+	dev->id.subsystem_device_id = (uint16_t)tmp;
+
+	/* get class_id */
+	snprintf(filename, sizeof(filename), "%s/class",
+		 dirname);
+	if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+		free(dev);
+		return -1;
+	}
+	/* the least 24 bits are valid: class, subclass, program interface */
+	dev->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
+
+	/* get max_vfs */
+	dev->max_vfs = 0;
+	snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
+	if (!access(filename, F_OK) &&
+	    eal_parse_sysfs_value(filename, &tmp) == 0)
+		dev->max_vfs = (uint16_t)tmp;
+	else {
+		/* for non igb_uio driver, need kernel version >= 3.8 */
+		snprintf(filename, sizeof(filename),
+			 "%s/sriov_numvfs", dirname);
+		if (!access(filename, F_OK) &&
+		    eal_parse_sysfs_value(filename, &tmp) == 0)
+			dev->max_vfs = (uint16_t)tmp;
+	}
+
+	/* get numa node, default to 0 if not present */
+	snprintf(filename, sizeof(filename), "%s/numa_node",
+		 dirname);
+
+	if (access(filename, F_OK) != -1) {
+		if (eal_parse_sysfs_value(filename, &tmp) == 0)
+			dev->device.numa_node = tmp;
+		else
+			dev->device.numa_node = -1;
+	} else {
+		dev->device.numa_node = 0;
+	}
+
+	pci_name_set(dev);
+
+	/* parse resources */
+	snprintf(filename, sizeof(filename), "%s/resource", dirname);
+	if (pci_parse_sysfs_resource(filename, dev) < 0) {
+		RTE_LOG(ERR, EAL, "%s(): cannot parse resource\n", __func__);
+		free(dev);
+		return -1;
+	}
+
+	/* parse driver */
+	snprintf(filename, sizeof(filename), "%s/driver", dirname);
+	ret = pci_get_kernel_driver_by_path(filename, driver, sizeof(driver));
+	if (ret < 0) {
+		RTE_LOG(ERR, EAL, "Fail to get kernel driver\n");
+		free(dev);
+		return -1;
+	}
+
+	if (!ret) {
+		if (!strcmp(driver, "vfio-pci"))
+			dev->kdrv = RTE_KDRV_VFIO;
+		else if (!strcmp(driver, "igb_uio"))
+			dev->kdrv = RTE_KDRV_IGB_UIO;
+		else if (!strcmp(driver, "uio_pci_generic"))
+			dev->kdrv = RTE_KDRV_UIO_GENERIC;
+		else
+			dev->kdrv = RTE_KDRV_UNKNOWN;
+	} else
+		dev->kdrv = RTE_KDRV_NONE;
+
+	/* device is valid, add in list (sorted) */
+	if (TAILQ_EMPTY(&rte_pci_bus.device_list)) {
+		rte_pci_add_device(dev);
+	} else {
+		struct rte_pci_device *dev2;
+		int ret;
+
+		TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) {
+			ret = rte_pci_addr_cmp(&dev->addr, &dev2->addr);
+			if (ret > 0)
+				continue;
+
+			if (ret < 0) {
+				rte_pci_insert_device(dev2, dev);
+			} else { /* already registered */
+				if (!rte_dev_is_probed(&dev2->device)) {
+					dev2->kdrv = dev->kdrv;
+					dev2->max_vfs = dev->max_vfs;
+					memcpy(&dev2->id, &dev->id, sizeof(dev2->id));
+					pci_name_set(dev2);
+					memmove(dev2->mem_resource,
+						dev->mem_resource,
+						sizeof(dev->mem_resource));
+				} else {
+					/**
+					 * If device is plugged and driver is
+					 * probed already, (This happens when
+					 * we call rte_dev_probe which will
+					 * scan all device on the bus) we don't
+					 * need to do anything here unless...
+					 **/
+					if (dev2->kdrv != dev->kdrv ||
+						dev2->max_vfs != dev->max_vfs ||
+						memcmp(&dev2->id, &dev->id, sizeof(dev2->id)))
+						/*
+						 * This should not happens.
+						 * But it is still possible if
+						 * we unbind a device from
+						 * vfio or uio before hotplug
+						 * remove and rebind it with
+						 * a different configure.
+						 * So we just print out the
+						 * error as an alarm.
+						 */
+						RTE_LOG(ERR, EAL, "Unexpected device scan at %s!\n",
+							filename);
+					else if (dev2->device.devargs !=
+						 dev->device.devargs) {
+						rte_devargs_remove(dev2->device.devargs);
+						pci_name_set(dev2);
+					}
+				}
+				free(dev);
+			}
+			return 0;
+		}
+
+		rte_pci_add_device(dev);
+	}
+
+	return 0;
+}
+
+int
+pci_update_device(const struct rte_pci_addr *addr)
+{
+	char filename[PATH_MAX];
+
+	snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT,
+		 rte_pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
+		 addr->function);
+
+	return pci_scan_one(filename, addr);
+}
+
+/*
+ * split up a pci address into its constituent parts.
+ */
+static int
+parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
+{
+	/* first split on ':' */
+	union splitaddr {
+		struct {
+			char *domain;
+			char *bus;
+			char *devid;
+			char *function;
+		};
+		char *str[PCI_FMT_NVAL]; /* last element-separator is "." not ":" */
+	} splitaddr;
+
+	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_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_KDRV_IGB_UIO:
+	case RTE_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_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
+		return pci_uio_read_config(intr_handle, buf, len, offset);
+#ifdef VFIO_PRESENT
+	case RTE_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_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
+		return pci_uio_write_config(intr_handle, buf, len, offset);
+#ifdef VFIO_PRESENT
+	case RTE_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_KDRV_VFIO:
+		if (pci_vfio_is_enabled())
+			ret = pci_vfio_ioport_map(dev, bar, p);
+		break;
+#endif
+	case RTE_KDRV_IGB_UIO:
+		ret = pci_uio_ioport_map(dev, bar, p);
+		break;
+	case RTE_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;
+	case RTE_KDRV_NONE:
+#if defined(RTE_ARCH_X86)
+		ret = pci_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_KDRV_VFIO:
+		pci_vfio_ioport_read(p, data, len, offset);
+		break;
+#endif
+	case RTE_KDRV_IGB_UIO:
+		pci_uio_ioport_read(p, data, len, offset);
+		break;
+	case RTE_KDRV_UIO_GENERIC:
+		pci_uio_ioport_read(p, data, len, offset);
+		break;
+	case RTE_KDRV_NONE:
+#if defined(RTE_ARCH_X86)
+		pci_uio_ioport_read(p, data, len, offset);
+#endif
+		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_KDRV_VFIO:
+		pci_vfio_ioport_write(p, data, len, offset);
+		break;
+#endif
+	case RTE_KDRV_IGB_UIO:
+		pci_uio_ioport_write(p, data, len, offset);
+		break;
+	case RTE_KDRV_UIO_GENERIC:
+		pci_uio_ioport_write(p, data, len, offset);
+		break;
+	case RTE_KDRV_NONE:
+#if defined(RTE_ARCH_X86)
+		pci_uio_ioport_write(p, data, len, offset);
+#endif
+		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_KDRV_VFIO:
+		if (pci_vfio_is_enabled())
+			ret = pci_vfio_ioport_unmap(p);
+		break;
+#endif
+	case RTE_KDRV_IGB_UIO:
+		ret = pci_uio_ioport_unmap(p);
+		break;
+	case RTE_KDRV_UIO_GENERIC:
+#if defined(RTE_ARCH_X86)
+		ret = 0;
+#else
+		ret = pci_uio_ioport_unmap(p);
+#endif
+		break;
+	case RTE_KDRV_NONE:
+#if defined(RTE_ARCH_X86)
+		ret = 0;
+#endif
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
diff --git a/src/spdk/dpdk/drivers/bus/pci/linux/pci_init.h b/src/spdk/dpdk/drivers/bus/pci/linux/pci_init.h
new file mode 100644
index 000000000..c2e603a37
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/linux/pci_init.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#ifndef EAL_PCI_INIT_H_
+#define EAL_PCI_INIT_H_
+
+#include <rte_vfio.h>
+
+/** IO resource type: */
+#define IORESOURCE_IO         0x00000100
+#define IORESOURCE_MEM        0x00000200
+
+/*
+ * Helper function to map PCI resources right after hugepages in virtual memory
+ */
+extern void *pci_map_addr;
+void *pci_find_max_end_va(void);
+
+/* parse one line of the "resource" sysfs file (note that the 'line'
+ * string is modified)
+ */
+int pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
+	uint64_t *end_addr, uint64_t *flags);
+
+int pci_uio_alloc_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource **uio_res);
+void pci_uio_free_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource *uio_res);
+int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
+		struct mapped_pci_resource *uio_res, int map_idx);
+
+int pci_uio_read_config(const struct rte_intr_handle *intr_handle,
+			void *buf, size_t len, off_t offs);
+int pci_uio_write_config(const struct rte_intr_handle *intr_handle,
+			 const void *buf, size_t len, off_t offs);
+
+int pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+		       struct rte_pci_ioport *p);
+void pci_uio_ioport_read(struct rte_pci_ioport *p,
+			 void *data, size_t len, off_t offset);
+void pci_uio_ioport_write(struct rte_pci_ioport *p,
+			  const void *data, size_t len, off_t offset);
+int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
+
+#ifdef VFIO_PRESENT
+
+#ifdef PCI_MSIX_TABLE_BIR
+#define RTE_PCI_MSIX_TABLE_BIR    PCI_MSIX_TABLE_BIR
+#else
+#define RTE_PCI_MSIX_TABLE_BIR    0x7
+#endif
+
+#ifdef PCI_MSIX_TABLE_OFFSET
+#define RTE_PCI_MSIX_TABLE_OFFSET PCI_MSIX_TABLE_OFFSET
+#else
+#define RTE_PCI_MSIX_TABLE_OFFSET 0xfffffff8
+#endif
+
+#ifdef PCI_MSIX_FLAGS_QSIZE
+#define RTE_PCI_MSIX_FLAGS_QSIZE  PCI_MSIX_FLAGS_QSIZE
+#else
+#define RTE_PCI_MSIX_FLAGS_QSIZE  0x07ff
+#endif
+
+/* access config space */
+int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
+			 void *buf, size_t len, off_t offs);
+int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
+			  const void *buf, size_t len, off_t offs);
+
+int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
+		        struct rte_pci_ioport *p);
+void pci_vfio_ioport_read(struct rte_pci_ioport *p,
+			  void *data, size_t len, off_t offset);
+void pci_vfio_ioport_write(struct rte_pci_ioport *p,
+			   const void *data, size_t len, off_t offset);
+int pci_vfio_ioport_unmap(struct rte_pci_ioport *p);
+
+/* map/unmap VFIO resource prototype */
+int pci_vfio_map_resource(struct rte_pci_device *dev);
+int pci_vfio_unmap_resource(struct rte_pci_device *dev);
+
+int pci_vfio_is_enabled(void);
+
+#endif
+
+#endif /* EAL_PCI_INIT_H_ */
diff --git a/src/spdk/dpdk/drivers/bus/pci/linux/pci_uio.c b/src/spdk/dpdk/drivers/bus/pci/linux/pci_uio.c
new file mode 100644
index 000000000..097dc1922
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/linux/pci_uio.c
@@ -0,0 +1,569 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <inttypes.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/sysmacros.h>
+#include <linux/pci_regs.h>
+
+#if defined(RTE_ARCH_X86)
+#include <sys/io.h>
+#endif
+
+#include <rte_string_fns.h>
+#include <rte_log.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_common.h>
+#include <rte_malloc.h>
+
+#include "eal_filesystem.h"
+#include "pci_init.h"
+
+void *pci_map_addr = NULL;
+
+#define OFF_MAX              ((uint64_t)(off_t)-1)
+
+int
+pci_uio_read_config(const struct rte_intr_handle *intr_handle,
+		    void *buf, size_t len, off_t offset)
+{
+	return pread(intr_handle->uio_cfg_fd, buf, len, offset);
+}
+
+int
+pci_uio_write_config(const struct rte_intr_handle *intr_handle,
+		     const void *buf, size_t len, off_t offset)
+{
+	return pwrite(intr_handle->uio_cfg_fd, buf, len, offset);
+}
+
+static int
+pci_uio_set_bus_master(int dev_fd)
+{
+	uint16_t reg;
+	int ret;
+
+	ret = pread(dev_fd, &reg, sizeof(reg), PCI_COMMAND);
+	if (ret != sizeof(reg)) {
+		RTE_LOG(ERR, EAL,
+			"Cannot read command from PCI config space!\n");
+		return -1;
+	}
+
+	/* return if bus mastering is already on */
+	if (reg & PCI_COMMAND_MASTER)
+		return 0;
+
+	reg |= PCI_COMMAND_MASTER;
+
+	ret = pwrite(dev_fd, &reg, sizeof(reg), PCI_COMMAND);
+	if (ret != sizeof(reg)) {
+		RTE_LOG(ERR, EAL,
+			"Cannot write command to PCI config space!\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+pci_mknod_uio_dev(const char *sysfs_uio_path, unsigned uio_num)
+{
+	FILE *f;
+	char filename[PATH_MAX];
+	int ret;
+	unsigned major, minor;
+	dev_t dev;
+
+	/* get the name of the sysfs file that contains the major and minor
+	 * of the uio device and read its content */
+	snprintf(filename, sizeof(filename), "%s/dev", sysfs_uio_path);
+
+	f = fopen(filename, "r");
+	if (f == NULL) {
+		RTE_LOG(ERR, EAL, "%s(): cannot open sysfs to get major:minor\n",
+			__func__);
+		return -1;
+	}
+
+	ret = fscanf(f, "%u:%u", &major, &minor);
+	if (ret != 2) {
+		RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs to get major:minor\n",
+			__func__);
+		fclose(f);
+		return -1;
+	}
+	fclose(f);
+
+	/* create the char device "mknod /dev/uioX c major minor" */
+	snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num);
+	dev = makedev(major, minor);
+	ret = mknod(filename, S_IFCHR | S_IRUSR | S_IWUSR, dev);
+	if (ret != 0) {
+		RTE_LOG(ERR, EAL, "%s(): mknod() failed %s\n",
+			__func__, strerror(errno));
+		return -1;
+	}
+
+	return ret;
+}
+
+/*
+ * Return the uioX char device used for a pci device. On success, return
+ * the UIO number and fill dstbuf string with the path of the device in
+ * sysfs. On error, return a negative value. In this case dstbuf is
+ * invalid.
+ */
+static int
+pci_get_uio_dev(struct rte_pci_device *dev, char *dstbuf,
+			   unsigned int buflen, int create)
+{
+	struct rte_pci_addr *loc = &dev->addr;
+	int uio_num = -1;
+	struct dirent *e;
+	DIR *dir;
+	char dirname[PATH_MAX];
+
+	/* depending on kernel version, uio can be located in uio/uioX
+	 * or uio:uioX */
+
+	snprintf(dirname, sizeof(dirname),
+			"%s/" PCI_PRI_FMT "/uio", rte_pci_get_sysfs_path(),
+			loc->domain, loc->bus, loc->devid, loc->function);
+
+	dir = opendir(dirname);
+	if (dir == NULL) {
+		/* retry with the parent directory */
+		snprintf(dirname, sizeof(dirname),
+				"%s/" PCI_PRI_FMT, rte_pci_get_sysfs_path(),
+				loc->domain, loc->bus, loc->devid, loc->function);
+		dir = opendir(dirname);
+
+		if (dir == NULL) {
+			RTE_LOG(ERR, EAL, "Cannot opendir %s\n", dirname);
+			return -1;
+		}
+	}
+
+	/* take the first file starting with "uio" */
+	while ((e = readdir(dir)) != NULL) {
+		/* format could be uio%d ...*/
+		int shortprefix_len = sizeof("uio") - 1;
+		/* ... or uio:uio%d */
+		int longprefix_len = sizeof("uio:uio") - 1;
+		char *endptr;
+
+		if (strncmp(e->d_name, "uio", 3) != 0)
+			continue;
+
+		/* first try uio%d */
+		errno = 0;
+		uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
+		if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
+			snprintf(dstbuf, buflen, "%s/uio%u", dirname, uio_num);
+			break;
+		}
+
+		/* then try uio:uio%d */
+		errno = 0;
+		uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
+		if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
+			snprintf(dstbuf, buflen, "%s/uio:uio%u", dirname, uio_num);
+			break;
+		}
+	}
+	closedir(dir);
+
+	/* No uio resource found */
+	if (e == NULL)
+		return -1;
+
+	/* create uio device if we've been asked to */
+	if (rte_eal_create_uio_dev() && create &&
+			pci_mknod_uio_dev(dstbuf, uio_num) < 0)
+		RTE_LOG(WARNING, EAL, "Cannot create /dev/uio%u\n", uio_num);
+
+	return uio_num;
+}
+
+void
+pci_uio_free_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource *uio_res)
+{
+	rte_free(uio_res);
+
+	if (dev->intr_handle.uio_cfg_fd >= 0) {
+		close(dev->intr_handle.uio_cfg_fd);
+		dev->intr_handle.uio_cfg_fd = -1;
+	}
+	if (dev->intr_handle.fd >= 0) {
+		close(dev->intr_handle.fd);
+		dev->intr_handle.fd = -1;
+		dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+	}
+}
+
+int
+pci_uio_alloc_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource **uio_res)
+{
+	char dirname[PATH_MAX];
+	char cfgname[PATH_MAX];
+	char devname[PATH_MAX]; /* contains the /dev/uioX */
+	int uio_num;
+	struct rte_pci_addr *loc;
+
+	loc = &dev->addr;
+
+	/* find uio resource */
+	uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 1);
+	if (uio_num < 0) {
+		RTE_LOG(WARNING, EAL, "  "PCI_PRI_FMT" not managed by UIO driver, "
+				"skipping\n", loc->domain, loc->bus, loc->devid, loc->function);
+		return 1;
+	}
+	snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num);
+
+	/* save fd if in primary process */
+	dev->intr_handle.fd = open(devname, O_RDWR);
+	if (dev->intr_handle.fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+			devname, strerror(errno));
+		goto error;
+	}
+
+	snprintf(cfgname, sizeof(cfgname),
+			"/sys/class/uio/uio%u/device/config", uio_num);
+	dev->intr_handle.uio_cfg_fd = open(cfgname, O_RDWR);
+	if (dev->intr_handle.uio_cfg_fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+			cfgname, strerror(errno));
+		goto error;
+	}
+
+	if (dev->kdrv == RTE_KDRV_IGB_UIO)
+		dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
+	else {
+		dev->intr_handle.type = RTE_INTR_HANDLE_UIO_INTX;
+
+		/* set bus master that is not done by uio_pci_generic */
+		if (pci_uio_set_bus_master(dev->intr_handle.uio_cfg_fd)) {
+			RTE_LOG(ERR, EAL, "Cannot set up bus mastering!\n");
+			goto error;
+		}
+	}
+
+	/* allocate the mapping details for secondary processes*/
+	*uio_res = rte_zmalloc("UIO_RES", sizeof(**uio_res), 0);
+	if (*uio_res == NULL) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot store uio mmap details\n", __func__);
+		goto error;
+	}
+
+	strlcpy((*uio_res)->path, devname, sizeof((*uio_res)->path));
+	memcpy(&(*uio_res)->pci_addr, &dev->addr, sizeof((*uio_res)->pci_addr));
+
+	return 0;
+
+error:
+	pci_uio_free_resource(dev, *uio_res);
+	return -1;
+}
+
+int
+pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
+		struct mapped_pci_resource *uio_res, int map_idx)
+{
+	int fd = -1;
+	char devname[PATH_MAX];
+	void *mapaddr;
+	struct rte_pci_addr *loc;
+	struct pci_map *maps;
+	int wc_activate = 0;
+
+	if (dev->driver != NULL)
+		wc_activate = dev->driver->drv_flags & RTE_PCI_DRV_WC_ACTIVATE;
+
+	loc = &dev->addr;
+	maps = uio_res->maps;
+
+	/* allocate memory to keep path */
+	maps[map_idx].path = rte_malloc(NULL, sizeof(devname), 0);
+	if (maps[map_idx].path == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n",
+				strerror(errno));
+		return -1;
+	}
+
+	/*
+	 * open resource file, to mmap it
+	 */
+	if (wc_activate) {
+		/* update devname for mmap  */
+		snprintf(devname, sizeof(devname),
+			"%s/" PCI_PRI_FMT "/resource%d_wc",
+			rte_pci_get_sysfs_path(),
+			loc->domain, loc->bus, loc->devid,
+			loc->function, res_idx);
+
+		fd = open(devname, O_RDWR);
+		if (fd < 0 && errno != ENOENT) {
+			RTE_LOG(INFO, EAL, "%s cannot be mapped. "
+				"Fall-back to non prefetchable mode.\n",
+				devname);
+		}
+	}
+
+	if (!wc_activate || fd < 0) {
+		snprintf(devname, sizeof(devname),
+			"%s/" PCI_PRI_FMT "/resource%d",
+			rte_pci_get_sysfs_path(),
+			loc->domain, loc->bus, loc->devid,
+			loc->function, res_idx);
+
+		/* then try to map resource file */
+		fd = open(devname, O_RDWR);
+		if (fd < 0) {
+			RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+				devname, strerror(errno));
+			goto error;
+		}
+	}
+
+	/* try mapping somewhere close to the end of hugepages */
+	if (pci_map_addr == NULL)
+		pci_map_addr = pci_find_max_end_va();
+
+	mapaddr = pci_map_resource(pci_map_addr, fd, 0,
+			(size_t)dev->mem_resource[res_idx].len, 0);
+	close(fd);
+	if (mapaddr == MAP_FAILED)
+		goto error;
+
+	pci_map_addr = RTE_PTR_ADD(mapaddr,
+			(size_t)dev->mem_resource[res_idx].len);
+
+	pci_map_addr = RTE_PTR_ALIGN(pci_map_addr, sysconf(_SC_PAGE_SIZE));
+
+	maps[map_idx].phaddr = dev->mem_resource[res_idx].phys_addr;
+	maps[map_idx].size = dev->mem_resource[res_idx].len;
+	maps[map_idx].addr = mapaddr;
+	maps[map_idx].offset = 0;
+	strcpy(maps[map_idx].path, devname);
+	dev->mem_resource[res_idx].addr = mapaddr;
+
+	return 0;
+
+error:
+	rte_free(maps[map_idx].path);
+	return -1;
+}
+
+#if defined(RTE_ARCH_X86)
+int
+pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+		   struct rte_pci_ioport *p)
+{
+	char dirname[PATH_MAX];
+	char filename[PATH_MAX];
+	int uio_num;
+	unsigned long start;
+
+	if (rte_eal_iopl_init() != 0) {
+		RTE_LOG(ERR, EAL, "%s(): insufficient ioport permissions for PCI device %s\n",
+			__func__, dev->name);
+		return -1;
+	}
+
+	uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 0);
+	if (uio_num < 0)
+		return -1;
+
+	/* get portio start */
+	snprintf(filename, sizeof(filename),
+		 "%s/portio/port%d/start", dirname, bar);
+	if (eal_parse_sysfs_value(filename, &start) < 0) {
+		RTE_LOG(ERR, EAL, "%s(): cannot parse portio start\n",
+			__func__);
+		return -1;
+	}
+	/* ensure we don't get anything funny here, read/write will cast to
+	 * uin16_t */
+	if (start > UINT16_MAX)
+		return -1;
+
+	/* FIXME only for primary process ? */
+	if (dev->intr_handle.type == RTE_INTR_HANDLE_UNKNOWN) {
+
+		snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num);
+		dev->intr_handle.fd = open(filename, O_RDWR);
+		if (dev->intr_handle.fd < 0) {
+			RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+				filename, strerror(errno));
+			return -1;
+		}
+		dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
+	}
+
+	RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%lx\n", start);
+
+	p->base = start;
+	p->len = 0;
+	return 0;
+}
+#else
+int
+pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+		   struct rte_pci_ioport *p)
+{
+	FILE *f;
+	char buf[BUFSIZ];
+	char filename[PATH_MAX];
+	uint64_t phys_addr, end_addr, flags;
+	int fd, i;
+	void *addr;
+
+	/* open and read addresses of the corresponding resource in sysfs */
+	snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource",
+		rte_pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus,
+		dev->addr.devid, dev->addr.function);
+	f = fopen(filename, "r");
+	if (f == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot open sysfs resource: %s\n",
+			strerror(errno));
+		return -1;
+	}
+	for (i = 0; i < bar + 1; i++) {
+		if (fgets(buf, sizeof(buf), f) == NULL) {
+			RTE_LOG(ERR, EAL, "Cannot read sysfs resource\n");
+			goto error;
+		}
+	}
+	if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr,
+			&end_addr, &flags) < 0)
+		goto error;
+	if ((flags & IORESOURCE_IO) == 0) {
+		RTE_LOG(ERR, EAL, "BAR %d is not an IO resource\n", bar);
+		goto error;
+	}
+	snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource%d",
+		rte_pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus,
+		dev->addr.devid, dev->addr.function, bar);
+
+	/* mmap the pci resource */
+	fd = open(filename, O_RDWR);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", filename,
+			strerror(errno));
+		goto error;
+	}
+	addr = mmap(NULL, end_addr + 1, PROT_READ | PROT_WRITE,
+		MAP_SHARED, fd, 0);
+	close(fd);
+	if (addr == MAP_FAILED) {
+		RTE_LOG(ERR, EAL, "Cannot mmap IO port resource: %s\n",
+			strerror(errno));
+		goto error;
+	}
+
+	/* strangely, the base address is mmap addr + phys_addr */
+	p->base = (uintptr_t)addr + phys_addr;
+	p->len = end_addr + 1;
+	RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%"PRIx64"\n", p->base);
+	fclose(f);
+
+	return 0;
+
+error:
+	fclose(f);
+	return -1;
+}
+#endif
+
+void
+pci_uio_ioport_read(struct rte_pci_ioport *p,
+		    void *data, size_t len, off_t offset)
+{
+	uint8_t *d;
+	int size;
+	uintptr_t reg = p->base + offset;
+
+	for (d = data; len > 0; d += size, reg += size, len -= size) {
+		if (len >= 4) {
+			size = 4;
+#if defined(RTE_ARCH_X86)
+			*(uint32_t *)d = inl(reg);
+#else
+			*(uint32_t *)d = *(volatile uint32_t *)reg;
+#endif
+		} else if (len >= 2) {
+			size = 2;
+#if defined(RTE_ARCH_X86)
+			*(uint16_t *)d = inw(reg);
+#else
+			*(uint16_t *)d = *(volatile uint16_t *)reg;
+#endif
+		} else {
+			size = 1;
+#if defined(RTE_ARCH_X86)
+			*d = inb(reg);
+#else
+			*d = *(volatile uint8_t *)reg;
+#endif
+		}
+	}
+}
+
+void
+pci_uio_ioport_write(struct rte_pci_ioport *p,
+		     const void *data, size_t len, off_t offset)
+{
+	const uint8_t *s;
+	int size;
+	uintptr_t reg = p->base + offset;
+
+	for (s = data; len > 0; s += size, reg += size, len -= size) {
+		if (len >= 4) {
+			size = 4;
+#if defined(RTE_ARCH_X86)
+			outl_p(*(const uint32_t *)s, reg);
+#else
+			*(volatile uint32_t *)reg = *(const uint32_t *)s;
+#endif
+		} else if (len >= 2) {
+			size = 2;
+#if defined(RTE_ARCH_X86)
+			outw_p(*(const uint16_t *)s, reg);
+#else
+			*(volatile uint16_t *)reg = *(const uint16_t *)s;
+#endif
+		} else {
+			size = 1;
+#if defined(RTE_ARCH_X86)
+			outb_p(*s, reg);
+#else
+			*(volatile uint8_t *)reg = *s;
+#endif
+		}
+	}
+}
+
+int
+pci_uio_ioport_unmap(struct rte_pci_ioport *p)
+{
+#if defined(RTE_ARCH_X86)
+	RTE_SET_USED(p);
+	/* FIXME close intr fd ? */
+	return 0;
+#else
+	return munmap((void *)(uintptr_t)p->base, p->len);
+#endif
+}
diff --git a/src/spdk/dpdk/drivers/bus/pci/linux/pci_vfio.c b/src/spdk/dpdk/drivers/bus/pci/linux/pci_vfio.c
new file mode 100644
index 000000000..64cd84a68
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/linux/pci_vfio.c
@@ -0,0 +1,1070 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <string.h>
+#include <fcntl.h>
+#include <linux/pci_regs.h>
+#include <sys/eventfd.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <stdbool.h>
+
+#include <rte_log.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_malloc.h>
+#include <rte_vfio.h>
+#include <rte_eal.h>
+#include <rte_bus.h>
+#include <rte_spinlock.h>
+#include <rte_tailq.h>
+
+#include "eal_filesystem.h"
+
+#include "pci_init.h"
+#include "private.h"
+
+/**
+ * @file
+ * PCI probing under linux (VFIO version)
+ *
+ * This code tries to determine if the PCI device is bound to VFIO driver,
+ * and initialize it (map BARs, set up interrupts) if that's the case.
+ *
+ * This file is only compiled if CONFIG_RTE_EAL_VFIO is set to "y".
+ */
+
+#ifdef VFIO_PRESENT
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE   (sysconf(_SC_PAGESIZE))
+#endif
+#define PAGE_MASK   (~(PAGE_SIZE - 1))
+
+static struct rte_tailq_elem rte_vfio_tailq = {
+	.name = "VFIO_RESOURCE_LIST",
+};
+EAL_REGISTER_TAILQ(rte_vfio_tailq)
+
+int
+pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
+		    void *buf, size_t len, off_t offs)
+{
+	return pread64(intr_handle->vfio_dev_fd, buf, len,
+	       VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) + offs);
+}
+
+int
+pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
+		    const void *buf, size_t len, off_t offs)
+{
+	return pwrite64(intr_handle->vfio_dev_fd, buf, len,
+	       VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) + offs);
+}
+
+/* get PCI BAR number where MSI-X interrupts are */
+static int
+pci_vfio_get_msix_bar(int fd, struct pci_msix_table *msix_table)
+{
+	int ret;
+	uint32_t reg;
+	uint16_t flags;
+	uint8_t cap_id, cap_offset;
+
+	/* read PCI capability pointer from config space */
+	ret = pread64(fd, &reg, sizeof(reg),
+			VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+			PCI_CAPABILITY_LIST);
+	if (ret != sizeof(reg)) {
+		RTE_LOG(ERR, EAL, "Cannot read capability pointer from PCI "
+				"config space!\n");
+		return -1;
+	}
+
+	/* we need first byte */
+	cap_offset = reg & 0xFF;
+
+	while (cap_offset) {
+
+		/* read PCI capability ID */
+		ret = pread64(fd, &reg, sizeof(reg),
+				VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+				cap_offset);
+		if (ret != sizeof(reg)) {
+			RTE_LOG(ERR, EAL, "Cannot read capability ID from PCI "
+					"config space!\n");
+			return -1;
+		}
+
+		/* we need first byte */
+		cap_id = reg & 0xFF;
+
+		/* if we haven't reached MSI-X, check next capability */
+		if (cap_id != PCI_CAP_ID_MSIX) {
+			ret = pread64(fd, &reg, sizeof(reg),
+					VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+					cap_offset);
+			if (ret != sizeof(reg)) {
+				RTE_LOG(ERR, EAL, "Cannot read capability pointer from PCI "
+						"config space!\n");
+				return -1;
+			}
+
+			/* we need second byte */
+			cap_offset = (reg & 0xFF00) >> 8;
+
+			continue;
+		}
+		/* else, read table offset */
+		else {
+			/* table offset resides in the next 4 bytes */
+			ret = pread64(fd, &reg, sizeof(reg),
+					VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+					cap_offset + 4);
+			if (ret != sizeof(reg)) {
+				RTE_LOG(ERR, EAL, "Cannot read table offset from PCI config "
+						"space!\n");
+				return -1;
+			}
+
+			ret = pread64(fd, &flags, sizeof(flags),
+					VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+					cap_offset + 2);
+			if (ret != sizeof(flags)) {
+				RTE_LOG(ERR, EAL, "Cannot read table flags from PCI config "
+						"space!\n");
+				return -1;
+			}
+
+			msix_table->bar_index = reg & RTE_PCI_MSIX_TABLE_BIR;
+			msix_table->offset = reg & RTE_PCI_MSIX_TABLE_OFFSET;
+			msix_table->size =
+				16 * (1 + (flags & RTE_PCI_MSIX_FLAGS_QSIZE));
+
+			return 0;
+		}
+	}
+	return 0;
+}
+
+/* set PCI bus mastering */
+static int
+pci_vfio_set_bus_master(int dev_fd, bool op)
+{
+	uint16_t reg;
+	int ret;
+
+	ret = pread64(dev_fd, &reg, sizeof(reg),
+			VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+			PCI_COMMAND);
+	if (ret != sizeof(reg)) {
+		RTE_LOG(ERR, EAL, "Cannot read command from PCI config space!\n");
+		return -1;
+	}
+
+	if (op)
+		/* set the master bit */
+		reg |= PCI_COMMAND_MASTER;
+	else
+		reg &= ~(PCI_COMMAND_MASTER);
+
+	ret = pwrite64(dev_fd, &reg, sizeof(reg),
+			VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX) +
+			PCI_COMMAND);
+
+	if (ret != sizeof(reg)) {
+		RTE_LOG(ERR, EAL, "Cannot write command to PCI config space!\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/* set up interrupt support (but not enable interrupts) */
+static int
+pci_vfio_setup_interrupts(struct rte_pci_device *dev, int vfio_dev_fd)
+{
+	int i, ret, intr_idx;
+	enum rte_intr_mode intr_mode;
+
+	/* default to invalid index */
+	intr_idx = VFIO_PCI_NUM_IRQS;
+
+	/* Get default / configured intr_mode */
+	intr_mode = rte_eal_vfio_intr_mode();
+
+	/* get interrupt type from internal config (MSI-X by default, can be
+	 * overridden from the command line
+	 */
+	switch (intr_mode) {
+	case RTE_INTR_MODE_MSIX:
+		intr_idx = VFIO_PCI_MSIX_IRQ_INDEX;
+		break;
+	case RTE_INTR_MODE_MSI:
+		intr_idx = VFIO_PCI_MSI_IRQ_INDEX;
+		break;
+	case RTE_INTR_MODE_LEGACY:
+		intr_idx = VFIO_PCI_INTX_IRQ_INDEX;
+		break;
+	/* don't do anything if we want to automatically determine interrupt type */
+	case RTE_INTR_MODE_NONE:
+		break;
+	default:
+		RTE_LOG(ERR, EAL, "  unknown default interrupt type!\n");
+		return -1;
+	}
+
+	/* start from MSI-X interrupt type */
+	for (i = VFIO_PCI_MSIX_IRQ_INDEX; i >= 0; i--) {
+		struct vfio_irq_info irq = { .argsz = sizeof(irq) };
+		int fd = -1;
+
+		/* skip interrupt modes we don't want */
+		if (intr_mode != RTE_INTR_MODE_NONE &&
+				i != intr_idx)
+			continue;
+
+		irq.index = i;
+
+		ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq);
+		if (ret < 0) {
+			RTE_LOG(ERR, EAL, "  cannot get IRQ info, "
+					"error %i (%s)\n", errno, strerror(errno));
+			return -1;
+		}
+
+		/* if this vector cannot be used with eventfd, fail if we explicitly
+		 * specified interrupt type, otherwise continue */
+		if ((irq.flags & VFIO_IRQ_INFO_EVENTFD) == 0) {
+			if (intr_mode != RTE_INTR_MODE_NONE) {
+				RTE_LOG(ERR, EAL,
+						"  interrupt vector does not support eventfd!\n");
+				return -1;
+			} else
+				continue;
+		}
+
+		/* set up an eventfd for interrupts */
+		fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
+		if (fd < 0) {
+			RTE_LOG(ERR, EAL, "  cannot set up eventfd, "
+					"error %i (%s)\n", errno, strerror(errno));
+			return -1;
+		}
+
+		dev->intr_handle.fd = fd;
+		dev->intr_handle.vfio_dev_fd = vfio_dev_fd;
+
+		switch (i) {
+		case VFIO_PCI_MSIX_IRQ_INDEX:
+			intr_mode = RTE_INTR_MODE_MSIX;
+			dev->intr_handle.type = RTE_INTR_HANDLE_VFIO_MSIX;
+			break;
+		case VFIO_PCI_MSI_IRQ_INDEX:
+			intr_mode = RTE_INTR_MODE_MSI;
+			dev->intr_handle.type = RTE_INTR_HANDLE_VFIO_MSI;
+			break;
+		case VFIO_PCI_INTX_IRQ_INDEX:
+			intr_mode = RTE_INTR_MODE_LEGACY;
+			dev->intr_handle.type = RTE_INTR_HANDLE_VFIO_LEGACY;
+			break;
+		default:
+			RTE_LOG(ERR, EAL, "  unknown interrupt type!\n");
+			return -1;
+		}
+
+		return 0;
+	}
+
+	/* if we're here, we haven't found a suitable interrupt vector */
+	return -1;
+}
+
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+/*
+ * Spinlock for device hot-unplug failure handling.
+ * If it tries to access bus or device, such as handle sigbus on bus
+ * or handle memory failure for device, just need to use this lock.
+ * It could protect the bus and the device to avoid race condition.
+ */
+static rte_spinlock_t failure_handle_lock = RTE_SPINLOCK_INITIALIZER;
+
+static void
+pci_vfio_req_handler(void *param)
+{
+	struct rte_bus *bus;
+	int ret;
+	struct rte_device *device = (struct rte_device *)param;
+
+	rte_spinlock_lock(&failure_handle_lock);
+	bus = rte_bus_find_by_device(device);
+	if (bus == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot find bus for device (%s)\n",
+			device->name);
+		goto handle_end;
+	}
+
+	/*
+	 * vfio kernel module request user space to release allocated
+	 * resources before device be deleted in kernel, so it can directly
+	 * call the vfio bus hot-unplug handler to process it.
+	 */
+	ret = bus->hot_unplug_handler(device);
+	if (ret)
+		RTE_LOG(ERR, EAL,
+			"Can not handle hot-unplug for device (%s)\n",
+			device->name);
+handle_end:
+	rte_spinlock_unlock(&failure_handle_lock);
+}
+
+/* enable notifier (only enable req now) */
+static int
+pci_vfio_enable_notifier(struct rte_pci_device *dev, int vfio_dev_fd)
+{
+	int ret;
+	int fd = -1;
+
+	/* set up an eventfd for req notifier */
+	fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
+	if (fd < 0) {
+		RTE_LOG(ERR, EAL, "Cannot set up eventfd, error %i (%s)\n",
+			errno, strerror(errno));
+		return -1;
+	}
+
+	dev->vfio_req_intr_handle.fd = fd;
+	dev->vfio_req_intr_handle.type = RTE_INTR_HANDLE_VFIO_REQ;
+	dev->vfio_req_intr_handle.vfio_dev_fd = vfio_dev_fd;
+
+	ret = rte_intr_callback_register(&dev->vfio_req_intr_handle,
+					 pci_vfio_req_handler,
+					 (void *)&dev->device);
+	if (ret) {
+		RTE_LOG(ERR, EAL, "Fail to register req notifier handler.\n");
+		goto error;
+	}
+
+	ret = rte_intr_enable(&dev->vfio_req_intr_handle);
+	if (ret) {
+		RTE_LOG(ERR, EAL, "Fail to enable req notifier.\n");
+		ret = rte_intr_callback_unregister(&dev->vfio_req_intr_handle,
+						 pci_vfio_req_handler,
+						 (void *)&dev->device);
+		if (ret < 0)
+			RTE_LOG(ERR, EAL,
+				"Fail to unregister req notifier handler.\n");
+		goto error;
+	}
+
+	return 0;
+error:
+	close(fd);
+
+	dev->vfio_req_intr_handle.fd = -1;
+	dev->vfio_req_intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+	dev->vfio_req_intr_handle.vfio_dev_fd = -1;
+
+	return -1;
+}
+
+/* disable notifier (only disable req now) */
+static int
+pci_vfio_disable_notifier(struct rte_pci_device *dev)
+{
+	int ret;
+
+	ret = rte_intr_disable(&dev->vfio_req_intr_handle);
+	if (ret) {
+		RTE_LOG(ERR, EAL, "fail to disable req notifier.\n");
+		return -1;
+	}
+
+	ret = rte_intr_callback_unregister(&dev->vfio_req_intr_handle,
+					   pci_vfio_req_handler,
+					   (void *)&dev->device);
+	if (ret < 0) {
+		RTE_LOG(ERR, EAL,
+			 "fail to unregister req notifier handler.\n");
+		return -1;
+	}
+
+	close(dev->vfio_req_intr_handle.fd);
+
+	dev->vfio_req_intr_handle.fd = -1;
+	dev->vfio_req_intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+	dev->vfio_req_intr_handle.vfio_dev_fd = -1;
+
+	return 0;
+}
+#endif
+
+static int
+pci_vfio_is_ioport_bar(int vfio_dev_fd, int bar_index)
+{
+	uint32_t ioport_bar;
+	int ret;
+
+	ret = pread64(vfio_dev_fd, &ioport_bar, sizeof(ioport_bar),
+			  VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX)
+			  + PCI_BASE_ADDRESS_0 + bar_index*4);
+	if (ret != sizeof(ioport_bar)) {
+		RTE_LOG(ERR, EAL, "Cannot read command (%x) from config space!\n",
+			PCI_BASE_ADDRESS_0 + bar_index*4);
+		return -1;
+	}
+
+	return (ioport_bar & PCI_BASE_ADDRESS_SPACE_IO) != 0;
+}
+
+static int
+pci_rte_vfio_setup_device(struct rte_pci_device *dev, int vfio_dev_fd)
+{
+	if (pci_vfio_setup_interrupts(dev, vfio_dev_fd) != 0) {
+		RTE_LOG(ERR, EAL, "Error setting up interrupts!\n");
+		return -1;
+	}
+
+	/* set bus mastering for the device */
+	if (pci_vfio_set_bus_master(vfio_dev_fd, true)) {
+		RTE_LOG(ERR, EAL, "Cannot set up bus mastering!\n");
+		return -1;
+	}
+
+	/*
+	 * Reset the device. If the device is not capable of resetting,
+	 * then it updates errno as EINVAL.
+	 */
+	if (ioctl(vfio_dev_fd, VFIO_DEVICE_RESET) && errno != EINVAL) {
+		RTE_LOG(ERR, EAL, "Unable to reset device! Error: %d (%s)\n",
+				errno, strerror(errno));
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+pci_vfio_mmap_bar(int vfio_dev_fd, struct mapped_pci_resource *vfio_res,
+		int bar_index, int additional_flags)
+{
+	struct memreg {
+		uint64_t offset;
+		size_t   size;
+	} memreg[2] = {};
+	void *bar_addr;
+	struct pci_msix_table *msix_table = &vfio_res->msix_table;
+	struct pci_map *bar = &vfio_res->maps[bar_index];
+
+	if (bar->size == 0) {
+		RTE_LOG(DEBUG, EAL, "Bar size is 0, skip BAR%d\n", bar_index);
+		return 0;
+	}
+
+	if (msix_table->bar_index == bar_index) {
+		/*
+		 * VFIO will not let us map the MSI-X table,
+		 * but we can map around it.
+		 */
+		uint32_t table_start = msix_table->offset;
+		uint32_t table_end = table_start + msix_table->size;
+		table_end = RTE_ALIGN(table_end, PAGE_SIZE);
+		table_start = RTE_ALIGN_FLOOR(table_start, PAGE_SIZE);
+
+		/* If page-aligned start of MSI-X table is less than the
+		 * actual MSI-X table start address, reassign to the actual
+		 * start address.
+		 */
+		if (table_start < msix_table->offset)
+			table_start = msix_table->offset;
+
+		if (table_start == 0 && table_end >= bar->size) {
+			/* Cannot map this BAR */
+			RTE_LOG(DEBUG, EAL, "Skipping BAR%d\n", bar_index);
+			bar->size = 0;
+			bar->addr = 0;
+			return 0;
+		}
+
+		memreg[0].offset = bar->offset;
+		memreg[0].size = table_start;
+		if (bar->size < table_end) {
+			/*
+			 * If MSI-X table end is beyond BAR end, don't attempt
+			 * to perform second mapping.
+			 */
+			memreg[1].offset = 0;
+			memreg[1].size = 0;
+		} else {
+			memreg[1].offset = bar->offset + table_end;
+			memreg[1].size = bar->size - table_end;
+		}
+
+		RTE_LOG(DEBUG, EAL,
+			"Trying to map BAR%d that contains the MSI-X "
+			"table. Trying offsets: "
+			"0x%04" PRIx64 ":0x%04zx, 0x%04" PRIx64 ":0x%04zx\n",
+			bar_index,
+			memreg[0].offset, memreg[0].size,
+			memreg[1].offset, memreg[1].size);
+	} else {
+		memreg[0].offset = bar->offset;
+		memreg[0].size = bar->size;
+	}
+
+	/* reserve the address using an inaccessible mapping */
+	bar_addr = mmap(bar->addr, bar->size, 0, MAP_PRIVATE |
+			MAP_ANONYMOUS | additional_flags, -1, 0);
+	if (bar_addr != MAP_FAILED) {
+		void *map_addr = NULL;
+		if (memreg[0].size) {
+			/* actual map of first part */
+			map_addr = pci_map_resource(bar_addr, vfio_dev_fd,
+							memreg[0].offset,
+							memreg[0].size,
+							MAP_FIXED);
+		}
+
+		/* if there's a second part, try to map it */
+		if (map_addr != MAP_FAILED
+			&& memreg[1].offset && memreg[1].size) {
+			void *second_addr = RTE_PTR_ADD(bar_addr,
+						(uintptr_t)(memreg[1].offset -
+						bar->offset));
+			map_addr = pci_map_resource(second_addr,
+							vfio_dev_fd,
+							memreg[1].offset,
+							memreg[1].size,
+							MAP_FIXED);
+		}
+
+		if (map_addr == MAP_FAILED || !map_addr) {
+			munmap(bar_addr, bar->size);
+			bar_addr = MAP_FAILED;
+			RTE_LOG(ERR, EAL, "Failed to map pci BAR%d\n",
+					bar_index);
+			return -1;
+		}
+	} else {
+		RTE_LOG(ERR, EAL,
+				"Failed to create inaccessible mapping for BAR%d\n",
+				bar_index);
+		return -1;
+	}
+
+	bar->addr = bar_addr;
+	return 0;
+}
+
+/*
+ * region info may contain capability headers, so we need to keep reallocating
+ * the memory until we match allocated memory size with argsz.
+ */
+static int
+pci_vfio_get_region_info(int vfio_dev_fd, struct vfio_region_info **info,
+		int region)
+{
+	struct vfio_region_info *ri;
+	size_t argsz = sizeof(*ri);
+	int ret;
+
+	ri = malloc(sizeof(*ri));
+	if (ri == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot allocate memory for region info\n");
+		return -1;
+	}
+again:
+	memset(ri, 0, argsz);
+	ri->argsz = argsz;
+	ri->index = region;
+
+	ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_REGION_INFO, ri);
+	if (ret < 0) {
+		free(ri);
+		return ret;
+	}
+	if (ri->argsz != argsz) {
+		struct vfio_region_info *tmp;
+
+		argsz = ri->argsz;
+		tmp = realloc(ri, argsz);
+
+		if (tmp == NULL) {
+			/* realloc failed but the ri is still there */
+			free(ri);
+			RTE_LOG(ERR, EAL, "Cannot reallocate memory for region info\n");
+			return -1;
+		}
+		ri = tmp;
+		goto again;
+	}
+	*info = ri;
+
+	return 0;
+}
+
+static struct vfio_info_cap_header *
+pci_vfio_info_cap(struct vfio_region_info *info, int cap)
+{
+	struct vfio_info_cap_header *h;
+	size_t offset;
+
+	if ((info->flags & RTE_VFIO_INFO_FLAG_CAPS) == 0) {
+		/* VFIO info does not advertise capabilities */
+		return NULL;
+	}
+
+	offset = VFIO_CAP_OFFSET(info);
+	while (offset != 0) {
+		h = RTE_PTR_ADD(info, offset);
+		if (h->id == cap)
+			return h;
+		offset = h->next;
+	}
+	return NULL;
+}
+
+static int
+pci_vfio_msix_is_mappable(int vfio_dev_fd, int msix_region)
+{
+	struct vfio_region_info *info;
+	int ret;
+
+	ret = pci_vfio_get_region_info(vfio_dev_fd, &info, msix_region);
+	if (ret < 0)
+		return -1;
+
+	ret = pci_vfio_info_cap(info, RTE_VFIO_CAP_MSIX_MAPPABLE) != NULL;
+
+	/* cleanup */
+	free(info);
+
+	return ret;
+}
+
+
+static int
+pci_vfio_map_resource_primary(struct rte_pci_device *dev)
+{
+	struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
+	char pci_addr[PATH_MAX] = {0};
+	int vfio_dev_fd;
+	struct rte_pci_addr *loc = &dev->addr;
+	int i, ret;
+	struct mapped_pci_resource *vfio_res = NULL;
+	struct mapped_pci_res_list *vfio_res_list =
+		RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
+
+	struct pci_map *maps;
+
+	dev->intr_handle.fd = -1;
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	dev->vfio_req_intr_handle.fd = -1;
+#endif
+
+	/* store PCI address string */
+	snprintf(pci_addr, sizeof(pci_addr), PCI_PRI_FMT,
+			loc->domain, loc->bus, loc->devid, loc->function);
+
+	ret = rte_vfio_setup_device(rte_pci_get_sysfs_path(), pci_addr,
+					&vfio_dev_fd, &device_info);
+	if (ret)
+		return ret;
+
+	/* allocate vfio_res and get region info */
+	vfio_res = rte_zmalloc("VFIO_RES", sizeof(*vfio_res), 0);
+	if (vfio_res == NULL) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot store vfio mmap details\n", __func__);
+		goto err_vfio_dev_fd;
+	}
+	memcpy(&vfio_res->pci_addr, &dev->addr, sizeof(vfio_res->pci_addr));
+
+	/* get number of registers (up to BAR5) */
+	vfio_res->nb_maps = RTE_MIN((int) device_info.num_regions,
+			VFIO_PCI_BAR5_REGION_INDEX + 1);
+
+	/* map BARs */
+	maps = vfio_res->maps;
+
+	vfio_res->msix_table.bar_index = -1;
+	/* get MSI-X BAR, if any (we have to know where it is because we can't
+	 * easily mmap it when using VFIO)
+	 */
+	ret = pci_vfio_get_msix_bar(vfio_dev_fd, &vfio_res->msix_table);
+	if (ret < 0) {
+		RTE_LOG(ERR, EAL, "  %s cannot get MSI-X BAR number!\n",
+				pci_addr);
+		goto err_vfio_res;
+	}
+	/* if we found our MSI-X BAR region, check if we can mmap it */
+	if (vfio_res->msix_table.bar_index != -1) {
+		int ret = pci_vfio_msix_is_mappable(vfio_dev_fd,
+				vfio_res->msix_table.bar_index);
+		if (ret < 0) {
+			RTE_LOG(ERR, EAL, "Couldn't check if MSI-X BAR is mappable\n");
+			goto err_vfio_res;
+		} else if (ret != 0) {
+			/* we can map it, so we don't care where it is */
+			RTE_LOG(DEBUG, EAL, "VFIO reports MSI-X BAR as mappable\n");
+			vfio_res->msix_table.bar_index = -1;
+		}
+	}
+
+	for (i = 0; i < (int) vfio_res->nb_maps; i++) {
+		struct vfio_region_info *reg = NULL;
+		void *bar_addr;
+
+		ret = pci_vfio_get_region_info(vfio_dev_fd, &reg, i);
+		if (ret < 0) {
+			RTE_LOG(ERR, EAL, "  %s cannot get device region info "
+				"error %i (%s)\n", pci_addr, errno,
+				strerror(errno));
+			goto err_vfio_res;
+		}
+
+		/* chk for io port region */
+		ret = pci_vfio_is_ioport_bar(vfio_dev_fd, i);
+		if (ret < 0) {
+			free(reg);
+			goto err_vfio_res;
+		} else if (ret) {
+			RTE_LOG(INFO, EAL, "Ignore mapping IO port bar(%d)\n",
+					i);
+			free(reg);
+			continue;
+		}
+
+		/* skip non-mmapable BARs */
+		if ((reg->flags & VFIO_REGION_INFO_FLAG_MMAP) == 0) {
+			free(reg);
+			continue;
+		}
+
+		/* try mapping somewhere close to the end of hugepages */
+		if (pci_map_addr == NULL)
+			pci_map_addr = pci_find_max_end_va();
+
+		bar_addr = pci_map_addr;
+		pci_map_addr = RTE_PTR_ADD(bar_addr, (size_t) reg->size);
+
+		pci_map_addr = RTE_PTR_ALIGN(pci_map_addr,
+					sysconf(_SC_PAGE_SIZE));
+
+		maps[i].addr = bar_addr;
+		maps[i].offset = reg->offset;
+		maps[i].size = reg->size;
+		maps[i].path = NULL; /* vfio doesn't have per-resource paths */
+
+		ret = pci_vfio_mmap_bar(vfio_dev_fd, vfio_res, i, 0);
+		if (ret < 0) {
+			RTE_LOG(ERR, EAL, "  %s mapping BAR%i failed: %s\n",
+					pci_addr, i, strerror(errno));
+			free(reg);
+			goto err_vfio_res;
+		}
+
+		dev->mem_resource[i].addr = maps[i].addr;
+
+		free(reg);
+	}
+
+	if (pci_rte_vfio_setup_device(dev, vfio_dev_fd) < 0) {
+		RTE_LOG(ERR, EAL, "  %s setup device failed\n", pci_addr);
+		goto err_vfio_res;
+	}
+
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	if (pci_vfio_enable_notifier(dev, vfio_dev_fd) != 0) {
+		RTE_LOG(ERR, EAL, "Error setting up notifier!\n");
+		goto err_vfio_res;
+	}
+
+#endif
+	TAILQ_INSERT_TAIL(vfio_res_list, vfio_res, next);
+
+	return 0;
+err_vfio_res:
+	rte_free(vfio_res);
+err_vfio_dev_fd:
+	close(vfio_dev_fd);
+	return -1;
+}
+
+static int
+pci_vfio_map_resource_secondary(struct rte_pci_device *dev)
+{
+	struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
+	char pci_addr[PATH_MAX] = {0};
+	int vfio_dev_fd;
+	struct rte_pci_addr *loc = &dev->addr;
+	int i, ret;
+	struct mapped_pci_resource *vfio_res = NULL;
+	struct mapped_pci_res_list *vfio_res_list =
+		RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
+
+	struct pci_map *maps;
+
+	dev->intr_handle.fd = -1;
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	dev->vfio_req_intr_handle.fd = -1;
+#endif
+
+	/* store PCI address string */
+	snprintf(pci_addr, sizeof(pci_addr), PCI_PRI_FMT,
+			loc->domain, loc->bus, loc->devid, loc->function);
+
+	/* if we're in a secondary process, just find our tailq entry */
+	TAILQ_FOREACH(vfio_res, vfio_res_list, next) {
+		if (rte_pci_addr_cmp(&vfio_res->pci_addr,
+						 &dev->addr))
+			continue;
+		break;
+	}
+	/* if we haven't found our tailq entry, something's wrong */
+	if (vfio_res == NULL) {
+		RTE_LOG(ERR, EAL, "  %s cannot find TAILQ entry for PCI device!\n",
+				pci_addr);
+		return -1;
+	}
+
+	ret = rte_vfio_setup_device(rte_pci_get_sysfs_path(), pci_addr,
+					&vfio_dev_fd, &device_info);
+	if (ret)
+		return ret;
+
+	/* map BARs */
+	maps = vfio_res->maps;
+
+	for (i = 0; i < (int) vfio_res->nb_maps; i++) {
+		ret = pci_vfio_mmap_bar(vfio_dev_fd, vfio_res, i, MAP_FIXED);
+		if (ret < 0) {
+			RTE_LOG(ERR, EAL, "  %s mapping BAR%i failed: %s\n",
+					pci_addr, i, strerror(errno));
+			goto err_vfio_dev_fd;
+		}
+
+		dev->mem_resource[i].addr = maps[i].addr;
+	}
+
+	/* we need save vfio_dev_fd, so it can be used during release */
+	dev->intr_handle.vfio_dev_fd = vfio_dev_fd;
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	dev->vfio_req_intr_handle.vfio_dev_fd = vfio_dev_fd;
+#endif
+
+	return 0;
+err_vfio_dev_fd:
+	close(vfio_dev_fd);
+	return -1;
+}
+
+/*
+ * map the PCI resources of a PCI device in virtual memory (VFIO version).
+ * primary and secondary processes follow almost exactly the same path
+ */
+int
+pci_vfio_map_resource(struct rte_pci_device *dev)
+{
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+		return pci_vfio_map_resource_primary(dev);
+	else
+		return pci_vfio_map_resource_secondary(dev);
+}
+
+static struct mapped_pci_resource *
+find_and_unmap_vfio_resource(struct mapped_pci_res_list *vfio_res_list,
+			struct rte_pci_device *dev,
+			const char *pci_addr)
+{
+	struct mapped_pci_resource *vfio_res = NULL;
+	struct pci_map *maps;
+	int i;
+
+	/* Get vfio_res */
+	TAILQ_FOREACH(vfio_res, vfio_res_list, next) {
+		if (rte_pci_addr_cmp(&vfio_res->pci_addr, &dev->addr))
+			continue;
+		break;
+	}
+
+	if  (vfio_res == NULL)
+		return vfio_res;
+
+	RTE_LOG(INFO, EAL, "Releasing pci mapped resource for %s\n",
+		pci_addr);
+
+	maps = vfio_res->maps;
+	for (i = 0; i < (int) vfio_res->nb_maps; i++) {
+
+		/*
+		 * We do not need to be aware of MSI-X table BAR mappings as
+		 * when mapping. Just using current maps array is enough
+		 */
+		if (maps[i].addr) {
+			RTE_LOG(INFO, EAL, "Calling pci_unmap_resource for %s at %p\n",
+				pci_addr, maps[i].addr);
+			pci_unmap_resource(maps[i].addr, maps[i].size);
+		}
+	}
+
+	return vfio_res;
+}
+
+static int
+pci_vfio_unmap_resource_primary(struct rte_pci_device *dev)
+{
+	char pci_addr[PATH_MAX] = {0};
+	struct rte_pci_addr *loc = &dev->addr;
+	struct mapped_pci_resource *vfio_res = NULL;
+	struct mapped_pci_res_list *vfio_res_list;
+	int ret;
+
+	/* store PCI address string */
+	snprintf(pci_addr, sizeof(pci_addr), PCI_PRI_FMT,
+			loc->domain, loc->bus, loc->devid, loc->function);
+
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	ret = pci_vfio_disable_notifier(dev);
+	if (ret) {
+		RTE_LOG(ERR, EAL, "fail to disable req notifier.\n");
+		return -1;
+	}
+
+#endif
+	if (close(dev->intr_handle.fd) < 0) {
+		RTE_LOG(INFO, EAL, "Error when closing eventfd file descriptor for %s\n",
+			pci_addr);
+		return -1;
+	}
+
+	if (pci_vfio_set_bus_master(dev->intr_handle.vfio_dev_fd, false)) {
+		RTE_LOG(ERR, EAL, "  %s cannot unset bus mastering for PCI device!\n",
+				pci_addr);
+		return -1;
+	}
+
+	ret = rte_vfio_release_device(rte_pci_get_sysfs_path(), pci_addr,
+				  dev->intr_handle.vfio_dev_fd);
+	if (ret < 0) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot release device\n", __func__);
+		return ret;
+	}
+
+	vfio_res_list =
+		RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
+	vfio_res = find_and_unmap_vfio_resource(vfio_res_list, dev, pci_addr);
+
+	/* if we haven't found our tailq entry, something's wrong */
+	if (vfio_res == NULL) {
+		RTE_LOG(ERR, EAL, "  %s cannot find TAILQ entry for PCI device!\n",
+				pci_addr);
+		return -1;
+	}
+
+	TAILQ_REMOVE(vfio_res_list, vfio_res, next);
+
+	return 0;
+}
+
+static int
+pci_vfio_unmap_resource_secondary(struct rte_pci_device *dev)
+{
+	char pci_addr[PATH_MAX] = {0};
+	struct rte_pci_addr *loc = &dev->addr;
+	struct mapped_pci_resource *vfio_res = NULL;
+	struct mapped_pci_res_list *vfio_res_list;
+	int ret;
+
+	/* store PCI address string */
+	snprintf(pci_addr, sizeof(pci_addr), PCI_PRI_FMT,
+			loc->domain, loc->bus, loc->devid, loc->function);
+
+	ret = rte_vfio_release_device(rte_pci_get_sysfs_path(), pci_addr,
+				  dev->intr_handle.vfio_dev_fd);
+	if (ret < 0) {
+		RTE_LOG(ERR, EAL,
+			"%s(): cannot release device\n", __func__);
+		return ret;
+	}
+
+	vfio_res_list =
+		RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
+	vfio_res = find_and_unmap_vfio_resource(vfio_res_list, dev, pci_addr);
+
+	/* if we haven't found our tailq entry, something's wrong */
+	if (vfio_res == NULL) {
+		RTE_LOG(ERR, EAL, "  %s cannot find TAILQ entry for PCI device!\n",
+				pci_addr);
+		return -1;
+	}
+
+	return 0;
+}
+
+int
+pci_vfio_unmap_resource(struct rte_pci_device *dev)
+{
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+		return pci_vfio_unmap_resource_primary(dev);
+	else
+		return pci_vfio_unmap_resource_secondary(dev);
+}
+
+int
+pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
+		    struct rte_pci_ioport *p)
+{
+	if (bar < VFIO_PCI_BAR0_REGION_INDEX ||
+	    bar > VFIO_PCI_BAR5_REGION_INDEX) {
+		RTE_LOG(ERR, EAL, "invalid bar (%d)!\n", bar);
+		return -1;
+	}
+
+	p->dev = dev;
+	p->base = VFIO_GET_REGION_ADDR(bar);
+	return 0;
+}
+
+void
+pci_vfio_ioport_read(struct rte_pci_ioport *p,
+		     void *data, size_t len, off_t offset)
+{
+	const struct rte_intr_handle *intr_handle = &p->dev->intr_handle;
+
+	if (pread64(intr_handle->vfio_dev_fd, data,
+		    len, p->base + offset) <= 0)
+		RTE_LOG(ERR, EAL,
+			"Can't read from PCI bar (%" PRIu64 ") : offset (%x)\n",
+			VFIO_GET_REGION_IDX(p->base), (int)offset);
+}
+
+void
+pci_vfio_ioport_write(struct rte_pci_ioport *p,
+		      const void *data, size_t len, off_t offset)
+{
+	const struct rte_intr_handle *intr_handle = &p->dev->intr_handle;
+
+	if (pwrite64(intr_handle->vfio_dev_fd, data,
+		     len, p->base + offset) <= 0)
+		RTE_LOG(ERR, EAL,
+			"Can't write to PCI bar (%" PRIu64 ") : offset (%x)\n",
+			VFIO_GET_REGION_IDX(p->base), (int)offset);
+}
+
+int
+pci_vfio_ioport_unmap(struct rte_pci_ioport *p)
+{
+	RTE_SET_USED(p);
+	return -1;
+}
+
+int
+pci_vfio_is_enabled(void)
+{
+	return rte_vfio_is_enabled("vfio_pci");
+}
+#endif
diff --git a/src/spdk/dpdk/drivers/bus/pci/meson.build b/src/spdk/dpdk/drivers/bus/pci/meson.build
new file mode 100644
index 000000000..b520bdfc1
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/meson.build
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2017 Intel Corporation
+
+deps += ['pci']
+install_headers('rte_bus_pci.h')
+sources = files('pci_common.c',
+	'pci_common_uio.c',
+	'pci_params.c')
+if is_linux
+	sources += files('linux/pci.c',
+			'linux/pci_uio.c',
+			'linux/pci_vfio.c')
+	includes += include_directories('linux')
+else
+	sources += files('bsd/pci.c')
+	includes += include_directories('bsd')
+endif
+
+deps += ['kvargs']
diff --git a/src/spdk/dpdk/drivers/bus/pci/pci_common.c b/src/spdk/dpdk/drivers/bus/pci/pci_common.c
new file mode 100644
index 000000000..245d94f59
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/pci_common.c
@@ -0,0 +1,687 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation.
+ * Copyright 2013-2014 6WIND S.A.
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/queue.h>
+#include <sys/mman.h>
+
+#include <rte_errno.h>
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_bus.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_per_lcore.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_string_fns.h>
+#include <rte_common.h>
+#include <rte_devargs.h>
+#include <rte_vfio.h>
+
+#include "private.h"
+
+
+#define SYSFS_PCI_DEVICES "/sys/bus/pci/devices"
+
+const char *rte_pci_get_sysfs_path(void)
+{
+	const char *path = NULL;
+
+	path = getenv("SYSFS_PCI_DEVICES");
+	if (path == NULL)
+		return SYSFS_PCI_DEVICES;
+
+	return path;
+}
+
+static struct rte_devargs *
+pci_devargs_lookup(const struct rte_pci_addr *pci_addr)
+{
+	struct rte_devargs *devargs;
+	struct rte_pci_addr addr;
+
+	RTE_EAL_DEVARGS_FOREACH("pci", devargs) {
+		devargs->bus->parse(devargs->name, &addr);
+		if (!rte_pci_addr_cmp(pci_addr, &addr))
+			return devargs;
+	}
+	return NULL;
+}
+
+void
+pci_name_set(struct rte_pci_device *dev)
+{
+	struct rte_devargs *devargs;
+
+	/* Each device has its internal, canonical name set. */
+	rte_pci_device_name(&dev->addr,
+			dev->name, sizeof(dev->name));
+	devargs = pci_devargs_lookup(&dev->addr);
+	dev->device.devargs = devargs;
+	/* In blacklist mode, if the device is not blacklisted, no
+	 * rte_devargs exists for it.
+	 */
+	if (devargs != NULL)
+		/* If an rte_devargs exists, the generic rte_device uses the
+		 * given name as its name.
+		 */
+		dev->device.name = dev->device.devargs->name;
+	else
+		/* Otherwise, it uses the internal, canonical form. */
+		dev->device.name = dev->name;
+}
+
+/*
+ * Match the PCI Driver and Device using the ID Table
+ */
+int
+rte_pci_match(const struct rte_pci_driver *pci_drv,
+	      const struct rte_pci_device *pci_dev)
+{
+	const struct rte_pci_id *id_table;
+
+	for (id_table = pci_drv->id_table; id_table->vendor_id != 0;
+	     id_table++) {
+		/* check if device's identifiers match the driver's ones */
+		if (id_table->vendor_id != pci_dev->id.vendor_id &&
+				id_table->vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->device_id != pci_dev->id.device_id &&
+				id_table->device_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_vendor_id !=
+		    pci_dev->id.subsystem_vendor_id &&
+		    id_table->subsystem_vendor_id != PCI_ANY_ID)
+			continue;
+		if (id_table->subsystem_device_id !=
+		    pci_dev->id.subsystem_device_id &&
+		    id_table->subsystem_device_id != PCI_ANY_ID)
+			continue;
+		if (id_table->class_id != pci_dev->id.class_id &&
+				id_table->class_id != RTE_CLASS_ANY_ID)
+			continue;
+
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * If vendor/device ID match, call the probe() function of the
+ * driver.
+ */
+static int
+rte_pci_probe_one_driver(struct rte_pci_driver *dr,
+			 struct rte_pci_device *dev)
+{
+	int ret;
+	bool already_probed;
+	struct rte_pci_addr *loc;
+
+	if ((dr == NULL) || (dev == NULL))
+		return -EINVAL;
+
+	loc = &dev->addr;
+
+	/* The device is not blacklisted; Check if driver supports it */
+	if (!rte_pci_match(dr, dev))
+		/* Match of device and driver failed */
+		return 1;
+
+	RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+			loc->domain, loc->bus, loc->devid, loc->function,
+			dev->device.numa_node);
+
+	/* no initialization when blacklisted, return without error */
+	if (dev->device.devargs != NULL &&
+		dev->device.devargs->policy ==
+			RTE_DEV_BLACKLISTED) {
+		RTE_LOG(INFO, EAL, "  Device is blacklisted, not"
+			" initializing\n");
+		return 1;
+	}
+
+	if (dev->device.numa_node < 0) {
+		RTE_LOG(WARNING, EAL, "  Invalid NUMA socket, default to 0\n");
+		dev->device.numa_node = 0;
+	}
+
+	already_probed = rte_dev_is_probed(&dev->device);
+	if (already_probed && !(dr->drv_flags & RTE_PCI_DRV_PROBE_AGAIN)) {
+		RTE_LOG(DEBUG, EAL, "Device %s is already probed\n",
+				dev->device.name);
+		return -EEXIST;
+	}
+
+	RTE_LOG(DEBUG, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
+		dev->id.device_id, dr->driver.name);
+
+	/*
+	 * reference driver structure
+	 * This needs to be before rte_pci_map_device(), as it enables to use
+	 * driver flags for adjusting configuration.
+	 */
+	if (!already_probed) {
+		enum rte_iova_mode dev_iova_mode;
+		enum rte_iova_mode iova_mode;
+
+		dev_iova_mode = pci_device_iova_mode(dr, dev);
+		iova_mode = rte_eal_iova_mode();
+		if (dev_iova_mode != RTE_IOVA_DC &&
+		    dev_iova_mode != iova_mode) {
+			RTE_LOG(ERR, EAL, "  Expecting '%s' IOVA mode but current mode is '%s', not initializing\n",
+				dev_iova_mode == RTE_IOVA_PA ? "PA" : "VA",
+				iova_mode == RTE_IOVA_PA ? "PA" : "VA");
+			return -EINVAL;
+		}
+
+		dev->driver = dr;
+	}
+
+	if (!already_probed && (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)) {
+		/* map resources for devices that use igb_uio */
+		ret = rte_pci_map_device(dev);
+		if (ret != 0) {
+			dev->driver = NULL;
+			return ret;
+		}
+	}
+
+	RTE_LOG(INFO, EAL, "Probe PCI driver: %s (%x:%x) device: "PCI_PRI_FMT" (socket %i)\n",
+			dr->driver.name, dev->id.vendor_id, dev->id.device_id,
+			loc->domain, loc->bus, loc->devid, loc->function,
+			dev->device.numa_node);
+	/* call the driver probe() function */
+	ret = dr->probe(dr, dev);
+	if (already_probed)
+		return ret; /* no rollback if already succeeded earlier */
+	if (ret) {
+		dev->driver = NULL;
+		if ((dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) &&
+			/* Don't unmap if device is unsupported and
+			 * driver needs mapped resources.
+			 */
+			!(ret > 0 &&
+				(dr->drv_flags & RTE_PCI_DRV_KEEP_MAPPED_RES)))
+			rte_pci_unmap_device(dev);
+	} else {
+		dev->device.driver = &dr->driver;
+	}
+
+	return ret;
+}
+
+/*
+ * If vendor/device ID match, call the remove() function of the
+ * driver.
+ */
+static int
+rte_pci_detach_dev(struct rte_pci_device *dev)
+{
+	struct rte_pci_addr *loc;
+	struct rte_pci_driver *dr;
+	int ret = 0;
+
+	if (dev == NULL)
+		return -EINVAL;
+
+	dr = dev->driver;
+	loc = &dev->addr;
+
+	RTE_LOG(DEBUG, EAL, "PCI device "PCI_PRI_FMT" on NUMA socket %i\n",
+			loc->domain, loc->bus, loc->devid,
+			loc->function, dev->device.numa_node);
+
+	RTE_LOG(DEBUG, EAL, "  remove driver: %x:%x %s\n", dev->id.vendor_id,
+			dev->id.device_id, dr->driver.name);
+
+	if (dr->remove) {
+		ret = dr->remove(dev);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* clear driver structure */
+	dev->driver = NULL;
+	dev->device.driver = NULL;
+
+	if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING)
+		/* unmap resources for devices that use igb_uio */
+		rte_pci_unmap_device(dev);
+
+	return 0;
+}
+
+/*
+ * If vendor/device ID match, call the probe() function of all
+ * registered driver for the given device. Return < 0 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 = 0;
+
+	if (dev == NULL)
+		return -EINVAL;
+
+	FOREACH_DRIVER_ON_PCIBUS(dr) {
+		rc = rte_pci_probe_one_driver(dr, dev);
+		if (rc < 0)
+			/* negative value is an error */
+			return rc;
+		if (rc > 0)
+			/* positive value means driver doesn't support it */
+			continue;
+		return 0;
+	}
+	return 1;
+}
+
+/*
+ * Scan the content of the PCI bus, and call the probe() function for
+ * all registered drivers that have a matching entry in its id_table
+ * for discovered devices.
+ */
+static int
+pci_probe(void)
+{
+	struct rte_pci_device *dev = NULL;
+	size_t probed = 0, failed = 0;
+	int ret = 0;
+
+	FOREACH_DEVICE_ON_PCIBUS(dev) {
+		probed++;
+
+		ret = pci_probe_all_drivers(dev);
+		if (ret < 0) {
+			if (ret != -EEXIST) {
+				RTE_LOG(ERR, EAL, "Requested device "
+					PCI_PRI_FMT " cannot be used\n",
+					dev->addr.domain, dev->addr.bus,
+					dev->addr.devid, dev->addr.function);
+				rte_errno = errno;
+				failed++;
+			}
+			ret = 0;
+		}
+	}
+
+	return (probed && probed == failed) ? -1 : 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_pci_dump(FILE *f)
+{
+	struct rte_pci_device *dev = NULL;
+
+	FOREACH_DEVICE_ON_PCIBUS(dev) {
+		pci_dump_one_device(f, dev);
+	}
+}
+
+static int
+pci_parse(const char *name, void *addr)
+{
+	struct rte_pci_addr *out = addr;
+	struct rte_pci_addr pci_addr;
+	bool parse;
+
+	parse = (rte_pci_addr_parse(name, &pci_addr) == 0);
+	if (parse && addr != NULL)
+		*out = pci_addr;
+	return parse == false;
+}
+
+/* register a driver */
+void
+rte_pci_register(struct rte_pci_driver *driver)
+{
+	TAILQ_INSERT_TAIL(&rte_pci_bus.driver_list, driver, next);
+	driver->bus = &rte_pci_bus;
+}
+
+/* unregister a driver */
+void
+rte_pci_unregister(struct rte_pci_driver *driver)
+{
+	TAILQ_REMOVE(&rte_pci_bus.driver_list, driver, next);
+	driver->bus = NULL;
+}
+
+/* Add a device to PCI bus */
+void
+rte_pci_add_device(struct rte_pci_device *pci_dev)
+{
+	TAILQ_INSERT_TAIL(&rte_pci_bus.device_list, pci_dev, next);
+}
+
+/* Insert a device into a predefined position in PCI bus */
+void
+rte_pci_insert_device(struct rte_pci_device *exist_pci_dev,
+		      struct rte_pci_device *new_pci_dev)
+{
+	TAILQ_INSERT_BEFORE(exist_pci_dev, new_pci_dev, next);
+}
+
+/* Remove a device from PCI bus */
+static void
+rte_pci_remove_device(struct rte_pci_device *pci_dev)
+{
+	TAILQ_REMOVE(&rte_pci_bus.device_list, pci_dev, next);
+}
+
+static struct rte_device *
+pci_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
+		const void *data)
+{
+	const struct rte_pci_device *pstart;
+	struct rte_pci_device *pdev;
+
+	if (start != NULL) {
+		pstart = RTE_DEV_TO_PCI_CONST(start);
+		pdev = TAILQ_NEXT(pstart, next);
+	} else {
+		pdev = TAILQ_FIRST(&rte_pci_bus.device_list);
+	}
+	while (pdev != NULL) {
+		if (cmp(&pdev->device, data) == 0)
+			return &pdev->device;
+		pdev = TAILQ_NEXT(pdev, next);
+	}
+	return NULL;
+}
+
+/*
+ * find the device which encounter the failure, by iterate over all device on
+ * PCI bus to check if the memory failure address is located in the range
+ * of the BARs of the device.
+ */
+static struct rte_pci_device *
+pci_find_device_by_addr(const void *failure_addr)
+{
+	struct rte_pci_device *pdev = NULL;
+	uint64_t check_point, start, end, len;
+	int i;
+
+	check_point = (uint64_t)(uintptr_t)failure_addr;
+
+	FOREACH_DEVICE_ON_PCIBUS(pdev) {
+		for (i = 0; i != RTE_DIM(pdev->mem_resource); i++) {
+			start = (uint64_t)(uintptr_t)pdev->mem_resource[i].addr;
+			len = pdev->mem_resource[i].len;
+			end = start + len;
+			if (check_point >= start && check_point < end) {
+				RTE_LOG(DEBUG, EAL, "Failure address %16.16"
+					PRIx64" belongs to device %s!\n",
+					check_point, pdev->device.name);
+				return pdev;
+			}
+		}
+	}
+	return NULL;
+}
+
+static int
+pci_hot_unplug_handler(struct rte_device *dev)
+{
+	struct rte_pci_device *pdev = NULL;
+	int ret = 0;
+
+	pdev = RTE_DEV_TO_PCI(dev);
+	if (!pdev)
+		return -1;
+
+	switch (pdev->kdrv) {
+#ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+	case RTE_KDRV_VFIO:
+		/*
+		 * vfio kernel module guaranty the pci device would not be
+		 * deleted until the user space release the resource, so no
+		 * need to remap BARs resource here, just directly notify
+		 * the req event to the user space to handle it.
+		 */
+		rte_dev_event_callback_process(dev->name,
+					       RTE_DEV_EVENT_REMOVE);
+		break;
+#endif
+	case RTE_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
+	case RTE_KDRV_NIC_UIO:
+		/* BARs resource is invalid, remap it to be safe. */
+		ret = pci_uio_remap_resource(pdev);
+		break;
+	default:
+		RTE_LOG(DEBUG, EAL,
+			"Not managed by a supported kernel driver, skipped\n");
+		ret = -1;
+		break;
+	}
+
+	return ret;
+}
+
+static int
+pci_sigbus_handler(const void *failure_addr)
+{
+	struct rte_pci_device *pdev = NULL;
+	int ret = 0;
+
+	pdev = pci_find_device_by_addr(failure_addr);
+	if (!pdev) {
+		/* It is a generic sigbus error, no bus would handle it. */
+		ret = 1;
+	} else {
+		/* The sigbus error is caused of hot-unplug. */
+		ret = pci_hot_unplug_handler(&pdev->device);
+		if (ret) {
+			RTE_LOG(ERR, EAL,
+				"Failed to handle hot-unplug for device %s",
+				pdev->name);
+			ret = -1;
+		}
+	}
+	return ret;
+}
+
+static int
+pci_plug(struct rte_device *dev)
+{
+	return pci_probe_all_drivers(RTE_DEV_TO_PCI(dev));
+}
+
+static int
+pci_unplug(struct rte_device *dev)
+{
+	struct rte_pci_device *pdev;
+	int ret;
+
+	pdev = RTE_DEV_TO_PCI(dev);
+	ret = rte_pci_detach_dev(pdev);
+	if (ret == 0) {
+		rte_pci_remove_device(pdev);
+		rte_devargs_remove(dev->devargs);
+		free(pdev);
+	}
+	return ret;
+}
+
+static int
+pci_dma_map(struct rte_device *dev, void *addr, uint64_t iova, size_t len)
+{
+	struct rte_pci_device *pdev = RTE_DEV_TO_PCI(dev);
+
+	if (!pdev || !pdev->driver) {
+		rte_errno = EINVAL;
+		return -1;
+	}
+	if (pdev->driver->dma_map)
+		return pdev->driver->dma_map(pdev, addr, iova, len);
+	/**
+	 *  In case driver don't provides any specific mapping
+	 *  try fallback to VFIO.
+	 */
+	if (pdev->kdrv == RTE_KDRV_VFIO)
+		return rte_vfio_container_dma_map
+				(RTE_VFIO_DEFAULT_CONTAINER_FD, (uintptr_t)addr,
+				 iova, len);
+	rte_errno = ENOTSUP;
+	return -1;
+}
+
+static int
+pci_dma_unmap(struct rte_device *dev, void *addr, uint64_t iova, size_t len)
+{
+	struct rte_pci_device *pdev = RTE_DEV_TO_PCI(dev);
+
+	if (!pdev || !pdev->driver) {
+		rte_errno = EINVAL;
+		return -1;
+	}
+	if (pdev->driver->dma_unmap)
+		return pdev->driver->dma_unmap(pdev, addr, iova, len);
+	/**
+	 *  In case driver don't provides any specific mapping
+	 *  try fallback to VFIO.
+	 */
+	if (pdev->kdrv == RTE_KDRV_VFIO)
+		return rte_vfio_container_dma_unmap
+				(RTE_VFIO_DEFAULT_CONTAINER_FD, (uintptr_t)addr,
+				 iova, len);
+	rte_errno = ENOTSUP;
+	return -1;
+}
+
+bool
+rte_pci_ignore_device(const struct rte_pci_addr *pci_addr)
+{
+	struct rte_devargs *devargs = pci_devargs_lookup(pci_addr);
+
+	switch (rte_pci_bus.bus.conf.scan_mode) {
+	case RTE_BUS_SCAN_WHITELIST:
+		if (devargs && devargs->policy == RTE_DEV_WHITELISTED)
+			return false;
+		break;
+	case RTE_BUS_SCAN_UNDEFINED:
+	case RTE_BUS_SCAN_BLACKLIST:
+		if (devargs == NULL ||
+		    devargs->policy != RTE_DEV_BLACKLISTED)
+			return false;
+		break;
+	}
+	return true;
+}
+
+enum rte_iova_mode
+rte_pci_get_iommu_class(void)
+{
+	enum rte_iova_mode iova_mode = RTE_IOVA_DC;
+	const struct rte_pci_device *dev;
+	const struct rte_pci_driver *drv;
+	bool devices_want_va = false;
+	bool devices_want_pa = false;
+	int iommu_no_va = -1;
+
+	FOREACH_DEVICE_ON_PCIBUS(dev) {
+		/*
+		 * We can check this only once, because the IOMMU hardware is
+		 * the same for all of them.
+		 */
+		if (iommu_no_va == -1)
+			iommu_no_va = pci_device_iommu_support_va(dev)
+					? 0 : 1;
+
+		if (dev->kdrv == RTE_KDRV_UNKNOWN ||
+		    dev->kdrv == RTE_KDRV_NONE)
+			continue;
+		FOREACH_DRIVER_ON_PCIBUS(drv) {
+			enum rte_iova_mode dev_iova_mode;
+
+			if (!rte_pci_match(drv, dev))
+				continue;
+
+			dev_iova_mode = pci_device_iova_mode(drv, dev);
+			RTE_LOG(DEBUG, EAL, "PCI driver %s for device "
+				PCI_PRI_FMT " wants IOVA as '%s'\n",
+				drv->driver.name,
+				dev->addr.domain, dev->addr.bus,
+				dev->addr.devid, dev->addr.function,
+				dev_iova_mode == RTE_IOVA_DC ? "DC" :
+				(dev_iova_mode == RTE_IOVA_PA ? "PA" : "VA"));
+			if (dev_iova_mode == RTE_IOVA_PA)
+				devices_want_pa = true;
+			else if (dev_iova_mode == RTE_IOVA_VA)
+				devices_want_va = true;
+		}
+	}
+	if (iommu_no_va == 1) {
+		iova_mode = RTE_IOVA_PA;
+		if (devices_want_va) {
+			RTE_LOG(WARNING, EAL, "Some devices want 'VA' but IOMMU does not support 'VA'.\n");
+			RTE_LOG(WARNING, EAL, "The devices that want 'VA' won't initialize.\n");
+		}
+	} else if (devices_want_va && !devices_want_pa) {
+		iova_mode = RTE_IOVA_VA;
+	} else if (devices_want_pa && !devices_want_va) {
+		iova_mode = RTE_IOVA_PA;
+	} else {
+		iova_mode = RTE_IOVA_DC;
+		if (devices_want_va) {
+			RTE_LOG(WARNING, EAL, "Some devices want 'VA' but forcing 'DC' because other devices want 'PA'.\n");
+			RTE_LOG(WARNING, EAL, "Depending on the final decision by the EAL, not all devices may be able to initialize.\n");
+		}
+	}
+	return iova_mode;
+}
+
+struct rte_pci_bus rte_pci_bus = {
+	.bus = {
+		.scan = rte_pci_scan,
+		.probe = pci_probe,
+		.find_device = pci_find_device,
+		.plug = pci_plug,
+		.unplug = pci_unplug,
+		.parse = pci_parse,
+		.dma_map = pci_dma_map,
+		.dma_unmap = pci_dma_unmap,
+		.get_iommu_class = rte_pci_get_iommu_class,
+		.dev_iterate = rte_pci_dev_iterate,
+		.hot_unplug_handler = pci_hot_unplug_handler,
+		.sigbus_handler = pci_sigbus_handler,
+	},
+	.device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list),
+	.driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list),
+};
+
+RTE_REGISTER_BUS(pci, rte_pci_bus.bus);
diff --git a/src/spdk/dpdk/drivers/bus/pci/pci_common_uio.c b/src/spdk/dpdk/drivers/bus/pci/pci_common_uio.c
new file mode 100644
index 000000000..f4dca9da9
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/pci_common_uio.c
@@ -0,0 +1,239 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2015 Intel Corporation
+ */
+
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <rte_eal.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_tailq.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+
+#include "private.h"
+
+static struct rte_tailq_elem rte_uio_tailq = {
+	.name = "UIO_RESOURCE_LIST",
+};
+EAL_REGISTER_TAILQ(rte_uio_tailq)
+
+static int
+pci_uio_map_secondary(struct rte_pci_device *dev)
+{
+	int fd, i, j;
+	struct mapped_pci_resource *uio_res;
+	struct mapped_pci_res_list *uio_res_list =
+			RTE_TAILQ_CAST(rte_uio_tailq.head, mapped_pci_res_list);
+
+	TAILQ_FOREACH(uio_res, uio_res_list, next) {
+
+		/* skip this element if it doesn't match our PCI address */
+		if (rte_pci_addr_cmp(&uio_res->pci_addr, &dev->addr))
+			continue;
+
+		for (i = 0; i != uio_res->nb_maps; i++) {
+			/*
+			 * open devname, to mmap it
+			 */
+			fd = open(uio_res->maps[i].path, O_RDWR);
+			if (fd < 0) {
+				RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+					uio_res->maps[i].path, strerror(errno));
+				return -1;
+			}
+
+			void *mapaddr = pci_map_resource(uio_res->maps[i].addr,
+					fd, (off_t)uio_res->maps[i].offset,
+					(size_t)uio_res->maps[i].size, 0);
+			/* fd is not needed in slave process, close it */
+			close(fd);
+			if (mapaddr != uio_res->maps[i].addr) {
+				RTE_LOG(ERR, EAL,
+					"Cannot mmap device resource file %s to address: %p\n",
+					uio_res->maps[i].path,
+					uio_res->maps[i].addr);
+				if (mapaddr != MAP_FAILED) {
+					/* unmap addrs correctly mapped */
+					for (j = 0; j < i; j++)
+						pci_unmap_resource(
+							uio_res->maps[j].addr,
+							(size_t)uio_res->maps[j].size);
+					/* unmap addr wrongly mapped */
+					pci_unmap_resource(mapaddr,
+						(size_t)uio_res->maps[i].size);
+				}
+				return -1;
+			}
+			dev->mem_resource[i].addr = mapaddr;
+		}
+		return 0;
+	}
+
+	RTE_LOG(ERR, EAL, "Cannot find resource for device\n");
+	return 1;
+}
+
+/* map the PCI resource of a PCI device in virtual memory */
+int
+pci_uio_map_resource(struct rte_pci_device *dev)
+{
+	int i, map_idx = 0, ret;
+	uint64_t phaddr;
+	struct mapped_pci_resource *uio_res = NULL;
+	struct mapped_pci_res_list *uio_res_list =
+		RTE_TAILQ_CAST(rte_uio_tailq.head, mapped_pci_res_list);
+
+	dev->intr_handle.fd = -1;
+	dev->intr_handle.uio_cfg_fd = -1;
+
+	/* secondary processes - use already recorded details */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return pci_uio_map_secondary(dev);
+
+	/* allocate uio resource */
+	ret = pci_uio_alloc_resource(dev, &uio_res);
+	if (ret)
+		return ret;
+
+	/* Map all BARs */
+	for (i = 0; i != PCI_MAX_RESOURCE; i++) {
+		/* skip empty BAR */
+		phaddr = dev->mem_resource[i].phys_addr;
+		if (phaddr == 0)
+			continue;
+
+		ret = pci_uio_map_resource_by_index(dev, i,
+				uio_res, map_idx);
+		if (ret)
+			goto error;
+
+		map_idx++;
+	}
+
+	uio_res->nb_maps = map_idx;
+
+	TAILQ_INSERT_TAIL(uio_res_list, uio_res, next);
+
+	return 0;
+error:
+	for (i = 0; i < map_idx; i++) {
+		pci_unmap_resource(uio_res->maps[i].addr,
+				(size_t)uio_res->maps[i].size);
+		rte_free(uio_res->maps[i].path);
+	}
+	pci_uio_free_resource(dev, uio_res);
+	return -1;
+}
+
+static void
+pci_uio_unmap(struct mapped_pci_resource *uio_res)
+{
+	int i;
+
+	if (uio_res == NULL)
+		return;
+
+	for (i = 0; i != uio_res->nb_maps; i++) {
+		pci_unmap_resource(uio_res->maps[i].addr,
+				(size_t)uio_res->maps[i].size);
+		if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+			rte_free(uio_res->maps[i].path);
+	}
+}
+
+/* remap the PCI resource of a PCI device in anonymous virtual memory */
+int
+pci_uio_remap_resource(struct rte_pci_device *dev)
+{
+	int i;
+	void *map_address;
+
+	if (dev == NULL)
+		return -1;
+
+	/* Remap all BARs */
+	for (i = 0; i != PCI_MAX_RESOURCE; i++) {
+		/* skip empty BAR */
+		if (dev->mem_resource[i].phys_addr == 0)
+			continue;
+		map_address = mmap(dev->mem_resource[i].addr,
+				(size_t)dev->mem_resource[i].len,
+				PROT_READ | PROT_WRITE,
+				MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+		if (map_address == MAP_FAILED) {
+			RTE_LOG(ERR, EAL,
+				"Cannot remap resource for device %s\n",
+				dev->name);
+			return -1;
+		}
+		RTE_LOG(INFO, EAL,
+			"Successful remap resource for device %s\n",
+			dev->name);
+	}
+
+	return 0;
+}
+
+static struct mapped_pci_resource *
+pci_uio_find_resource(struct rte_pci_device *dev)
+{
+	struct mapped_pci_resource *uio_res;
+	struct mapped_pci_res_list *uio_res_list =
+			RTE_TAILQ_CAST(rte_uio_tailq.head, mapped_pci_res_list);
+
+	if (dev == NULL)
+		return NULL;
+
+	TAILQ_FOREACH(uio_res, uio_res_list, next) {
+
+		/* skip this element if it doesn't match our PCI address */
+		if (!rte_pci_addr_cmp(&uio_res->pci_addr, &dev->addr))
+			return uio_res;
+	}
+	return NULL;
+}
+
+/* unmap the PCI resource of a PCI device in virtual memory */
+void
+pci_uio_unmap_resource(struct rte_pci_device *dev)
+{
+	struct mapped_pci_resource *uio_res;
+	struct mapped_pci_res_list *uio_res_list =
+			RTE_TAILQ_CAST(rte_uio_tailq.head, mapped_pci_res_list);
+
+	if (dev == NULL)
+		return;
+
+	/* find an entry for the device */
+	uio_res = pci_uio_find_resource(dev);
+	if (uio_res == NULL)
+		return;
+
+	/* secondary processes - just free maps */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return pci_uio_unmap(uio_res);
+
+	TAILQ_REMOVE(uio_res_list, uio_res, next);
+
+	/* unmap all resources */
+	pci_uio_unmap(uio_res);
+
+	/* free uio resource */
+	rte_free(uio_res);
+
+	/* close fd if in primary process */
+	close(dev->intr_handle.fd);
+	if (dev->intr_handle.uio_cfg_fd >= 0) {
+		close(dev->intr_handle.uio_cfg_fd);
+		dev->intr_handle.uio_cfg_fd = -1;
+	}
+
+	dev->intr_handle.fd = -1;
+	dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+}
diff --git a/src/spdk/dpdk/drivers/bus/pci/pci_params.c b/src/spdk/dpdk/drivers/bus/pci/pci_params.c
new file mode 100644
index 000000000..3192e9c96
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/pci_params.c
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2018 Gaëtan Rivet
+ */
+
+#include <rte_bus.h>
+#include <rte_bus_pci.h>
+#include <rte_dev.h>
+#include <rte_errno.h>
+#include <rte_kvargs.h>
+#include <rte_pci.h>
+
+#include "private.h"
+
+enum pci_params {
+	RTE_PCI_PARAM_ADDR,
+	RTE_PCI_PARAM_MAX,
+};
+
+static const char * const pci_params_keys[] = {
+	[RTE_PCI_PARAM_ADDR] = "addr",
+	[RTE_PCI_PARAM_MAX] = NULL,
+};
+
+static int
+pci_addr_kv_cmp(const char *key __rte_unused,
+		const char *value,
+		void *_addr2)
+{
+	struct rte_pci_addr _addr1;
+	struct rte_pci_addr *addr1 = &_addr1;
+	struct rte_pci_addr *addr2 = _addr2;
+
+	if (rte_pci_addr_parse(value, addr1))
+		return -1;
+	return -abs(rte_pci_addr_cmp(addr1, addr2));
+}
+
+static int
+pci_dev_match(const struct rte_device *dev,
+	      const void *_kvlist)
+{
+	const struct rte_kvargs *kvlist = _kvlist;
+	const struct rte_pci_device *pdev;
+
+	if (kvlist == NULL)
+		/* Empty string matches everything. */
+		return 0;
+	pdev = RTE_DEV_TO_PCI_CONST(dev);
+	/* if any field does not match. */
+	if (rte_kvargs_process(kvlist, pci_params_keys[RTE_PCI_PARAM_ADDR],
+			       &pci_addr_kv_cmp,
+			       (void *)(intptr_t)&pdev->addr))
+		return 1;
+	return 0;
+}
+
+void *
+rte_pci_dev_iterate(const void *start,
+		    const char *str,
+		    const struct rte_dev_iterator *it __rte_unused)
+{
+	rte_bus_find_device_t find_device;
+	struct rte_kvargs *kvargs = NULL;
+	struct rte_device *dev;
+
+	if (str != NULL) {
+		kvargs = rte_kvargs_parse(str, pci_params_keys);
+		if (kvargs == NULL) {
+			RTE_LOG(ERR, EAL, "cannot parse argument list\n");
+			rte_errno = EINVAL;
+			return NULL;
+		}
+	}
+	find_device = rte_pci_bus.bus.find_device;
+	dev = find_device(start, pci_dev_match, kvargs);
+	rte_kvargs_free(kvargs);
+	return dev;
+}
diff --git a/src/spdk/dpdk/drivers/bus/pci/private.h b/src/spdk/dpdk/drivers/bus/pci/private.h
new file mode 100644
index 000000000..367cdd9a6
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/private.h
@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 6WIND S.A.
+ */
+
+#ifndef _PCI_PRIVATE_H_
+#define _PCI_PRIVATE_H_
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+
+extern struct rte_pci_bus rte_pci_bus;
+
+struct rte_pci_driver;
+struct rte_pci_device;
+
+extern struct rte_pci_bus rte_pci_bus;
+
+/**
+ * Scan the content of the PCI bus, and the devices in the devices
+ * list
+ *
+ * @return
+ *  0 on success, negative on error
+ */
+int rte_pci_scan(void);
+
+/**
+ * Find the name of a PCI device.
+ */
+void
+pci_name_set(struct rte_pci_device *dev);
+
+/**
+ * Validate whether a device with given PCI address should be ignored or not.
+ *
+ * @param pci_addr
+ *	PCI address of device to be validated
+ * @return
+ *	true: if device is to be ignored,
+ *	false: if device is to be scanned,
+ */
+bool rte_pci_ignore_device(const struct rte_pci_addr *pci_addr);
+
+/**
+ * Add a PCI device to the PCI Bus (append to PCI Device list). This function
+ * also updates the bus references of the PCI Device (and the generic device
+ * object embedded within.
+ *
+ * @param pci_dev
+ *	PCI device to add
+ * @return void
+ */
+void rte_pci_add_device(struct rte_pci_device *pci_dev);
+
+/**
+ * Insert a PCI device in the PCI Bus at a particular location in the device
+ * list. It also updates the PCI Bus reference of the new devices to be
+ * inserted.
+ *
+ * @param exist_pci_dev
+ *	Existing PCI device in PCI Bus
+ * @param new_pci_dev
+ *	PCI device to be added before exist_pci_dev
+ * @return void
+ */
+void rte_pci_insert_device(struct rte_pci_device *exist_pci_dev,
+		struct rte_pci_device *new_pci_dev);
+
+/**
+ * Update a pci device object by asking the kernel for the latest information.
+ *
+ * This function is private to EAL.
+ *
+ * @param addr
+ *	The PCI Bus-Device-Function address to look for
+ * @return
+ *   - 0 on success.
+ *   - negative on error.
+ */
+int pci_update_device(const struct rte_pci_addr *addr);
+
+/**
+ * Map the PCI resource of a PCI device in virtual memory
+ *
+ * This function is private to EAL.
+ *
+ * @return
+ *   0 on success, negative on error
+ */
+int pci_uio_map_resource(struct rte_pci_device *dev);
+
+/**
+ * Unmap the PCI resource of a PCI device
+ *
+ * This function is private to EAL.
+ */
+void pci_uio_unmap_resource(struct rte_pci_device *dev);
+
+/**
+ * Allocate uio resource for PCI device
+ *
+ * This function is private to EAL.
+ *
+ * @param dev
+ *   PCI device to allocate uio resource
+ * @param uio_res
+ *   Pointer to uio resource.
+ *   If the function returns 0, the pointer will be filled.
+ * @return
+ *   0 on success, negative on error
+ */
+int pci_uio_alloc_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource **uio_res);
+
+/**
+ * Free uio resource for PCI device
+ *
+ * This function is private to EAL.
+ *
+ * @param dev
+ *   PCI device to free uio resource
+ * @param uio_res
+ *   Pointer to uio resource.
+ */
+void pci_uio_free_resource(struct rte_pci_device *dev,
+		struct mapped_pci_resource *uio_res);
+
+/**
+ * Remap the PCI resource of a PCI device in anonymous virtual memory.
+ *
+ * @param dev
+ *   Point to the struct rte pci device.
+ * @return
+ *   - On success, zero.
+ *   - On failure, a negative value.
+ */
+int
+pci_uio_remap_resource(struct rte_pci_device *dev);
+
+/**
+ * Map device memory to uio resource
+ *
+ * This function is private to EAL.
+ *
+ * @param dev
+ *   PCI device that has memory information.
+ * @param res_idx
+ *   Memory resource index of the PCI device.
+ * @param uio_res
+ *  uio resource that will keep mapping information.
+ * @param map_idx
+ *   Mapping information index of the uio resource.
+ * @return
+ *   0 on success, negative on error
+ */
+int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
+		struct mapped_pci_resource *uio_res, int map_idx);
+
+/*
+ * Match the PCI Driver and Device using the ID Table
+ *
+ * @param pci_drv
+ *      PCI driver from which ID table would be extracted
+ * @param pci_dev
+ *      PCI device to match against the driver
+ * @return
+ *      1 for successful match
+ *      0 for unsuccessful match
+ */
+int
+rte_pci_match(const struct rte_pci_driver *pci_drv,
+	      const struct rte_pci_device *pci_dev);
+
+/**
+ * OS specific callbacks for rte_pci_get_iommu_class
+ *
+ */
+bool
+pci_device_iommu_support_va(const struct rte_pci_device *dev);
+
+enum rte_iova_mode
+pci_device_iova_mode(const struct rte_pci_driver *pci_drv,
+		     const struct rte_pci_device *pci_dev);
+
+/**
+ * Get iommu class of PCI devices on the bus.
+ * And return their preferred iova mapping mode.
+ *
+ * @return
+ *   - enum rte_iova_mode.
+ */
+enum rte_iova_mode
+rte_pci_get_iommu_class(void);
+
+/*
+ * Iterate over internal devices,
+ * matching any device against the provided
+ * string.
+ *
+ * @param start
+ *   Iteration starting point.
+ *
+ * @param str
+ *   Device string to match against.
+ *
+ * @param it
+ *   (unused) iterator structure.
+ *
+ * @return
+ *   A pointer to the next matching device if any.
+ *   NULL otherwise.
+ */
+void *
+rte_pci_dev_iterate(const void *start,
+		    const char *str,
+		    const struct rte_dev_iterator *it);
+
+#endif /* _PCI_PRIVATE_H_ */
diff --git a/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci.h b/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci.h
new file mode 100644
index 000000000..29bea6d70
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci.h
@@ -0,0 +1,361 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2015 Intel Corporation.
+ * Copyright 2013-2014 6WIND S.A.
+ */
+
+#ifndef _RTE_BUS_PCI_H_
+#define _RTE_BUS_PCI_H_
+
+/**
+ * @file
+ *
+ * RTE PCI Bus Interface
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/queue.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <rte_debug.h>
+#include <rte_interrupts.h>
+#include <rte_dev.h>
+#include <rte_bus.h>
+#include <rte_pci.h>
+
+/** Pathname of PCI devices directory. */
+const char *rte_pci_get_sysfs_path(void);
+
+/* Forward declarations */
+struct rte_pci_device;
+struct rte_pci_driver;
+
+/** List of PCI devices */
+TAILQ_HEAD(rte_pci_device_list, rte_pci_device);
+/** List of PCI drivers */
+TAILQ_HEAD(rte_pci_driver_list, rte_pci_driver);
+
+/* PCI Bus iterators */
+#define FOREACH_DEVICE_ON_PCIBUS(p)	\
+		TAILQ_FOREACH(p, &(rte_pci_bus.device_list), next)
+
+#define FOREACH_DRIVER_ON_PCIBUS(p)	\
+		TAILQ_FOREACH(p, &(rte_pci_bus.driver_list), next)
+
+struct rte_devargs;
+
+/**
+ * A structure describing a PCI device.
+ */
+struct rte_pci_device {
+	TAILQ_ENTRY(rte_pci_device) next;   /**< Next probed PCI device. */
+	struct rte_device device;           /**< Inherit core device */
+	struct rte_pci_addr addr;           /**< PCI location. */
+	struct rte_pci_id id;               /**< PCI ID. */
+	struct rte_mem_resource mem_resource[PCI_MAX_RESOURCE];
+					    /**< PCI Memory Resource */
+	struct rte_intr_handle intr_handle; /**< Interrupt handle */
+	struct rte_pci_driver *driver;      /**< PCI driver used in probing */
+	uint16_t max_vfs;                   /**< sriov enable if not zero */
+	enum rte_kernel_driver kdrv;        /**< Kernel driver passthrough */
+	char name[PCI_PRI_STR_SIZE+1];      /**< PCI location (ASCII) */
+	struct rte_intr_handle vfio_req_intr_handle;
+				/**< Handler of VFIO request interrupt */
+};
+
+/**
+ * @internal
+ * Helper macro for drivers that need to convert to struct rte_pci_device.
+ */
+#define RTE_DEV_TO_PCI(ptr) container_of(ptr, struct rte_pci_device, device)
+
+#define RTE_DEV_TO_PCI_CONST(ptr) \
+	container_of(ptr, const struct rte_pci_device, device)
+
+#define RTE_ETH_DEV_TO_PCI(eth_dev)	RTE_DEV_TO_PCI((eth_dev)->device)
+
+/** Any PCI device identifier (vendor, device, ...) */
+#define PCI_ANY_ID (0xffff)
+#define RTE_CLASS_ANY_ID (0xffffff)
+
+#ifdef __cplusplus
+/** C++ macro used to help building up tables of device IDs */
+#define RTE_PCI_DEVICE(vend, dev) \
+	RTE_CLASS_ANY_ID,         \
+	(vend),                   \
+	(dev),                    \
+	PCI_ANY_ID,               \
+	PCI_ANY_ID
+#else
+/** Macro used to help building up tables of device IDs */
+#define RTE_PCI_DEVICE(vend, dev)          \
+	.class_id = RTE_CLASS_ANY_ID,      \
+	.vendor_id = (vend),               \
+	.device_id = (dev),                \
+	.subsystem_vendor_id = PCI_ANY_ID, \
+	.subsystem_device_id = PCI_ANY_ID
+#endif
+
+/**
+ * Initialisation function for the driver called during PCI probing.
+ */
+typedef int (pci_probe_t)(struct rte_pci_driver *, struct rte_pci_device *);
+
+/**
+ * Uninitialisation function for the driver called during hotplugging.
+ */
+typedef int (pci_remove_t)(struct rte_pci_device *);
+
+/**
+ * Driver-specific DMA mapping. After a successful call the device
+ * will be able to read/write from/to this segment.
+ *
+ * @param dev
+ *   Pointer to the PCI device.
+ * @param addr
+ *   Starting virtual address of memory to be mapped.
+ * @param iova
+ *   Starting IOVA address of memory to be mapped.
+ * @param len
+ *   Length of memory segment being mapped.
+ * @return
+ *   - 0 On success.
+ *   - Negative value and rte_errno is set otherwise.
+ */
+typedef int (pci_dma_map_t)(struct rte_pci_device *dev, void *addr,
+			    uint64_t iova, size_t len);
+
+/**
+ * Driver-specific DMA un-mapping. After a successful call the device
+ * will not be able to read/write from/to this segment.
+ *
+ * @param dev
+ *   Pointer to the PCI device.
+ * @param addr
+ *   Starting virtual address of memory to be unmapped.
+ * @param iova
+ *   Starting IOVA address of memory to be unmapped.
+ * @param len
+ *   Length of memory segment being unmapped.
+ * @return
+ *   - 0 On success.
+ *   - Negative value and rte_errno is set otherwise.
+ */
+typedef int (pci_dma_unmap_t)(struct rte_pci_device *dev, void *addr,
+			      uint64_t iova, size_t len);
+
+/**
+ * A structure describing a PCI driver.
+ */
+struct rte_pci_driver {
+	TAILQ_ENTRY(rte_pci_driver) next;  /**< Next in list. */
+	struct rte_driver driver;          /**< Inherit core driver. */
+	struct rte_pci_bus *bus;           /**< PCI bus reference. */
+	pci_probe_t *probe;                /**< Device Probe function. */
+	pci_remove_t *remove;              /**< Device Remove function. */
+	pci_dma_map_t *dma_map;		   /**< device dma map function. */
+	pci_dma_unmap_t *dma_unmap;	   /**< device dma unmap function. */
+	const struct rte_pci_id *id_table; /**< ID table, NULL terminated. */
+	uint32_t drv_flags;                /**< Flags RTE_PCI_DRV_*. */
+};
+
+/**
+ * Structure describing the PCI bus
+ */
+struct rte_pci_bus {
+	struct rte_bus bus;               /**< Inherit the generic class */
+	struct rte_pci_device_list device_list;  /**< List of PCI devices */
+	struct rte_pci_driver_list driver_list;  /**< List of PCI drivers */
+};
+
+/** Device needs PCI BAR mapping (done with either IGB_UIO or VFIO) */
+#define RTE_PCI_DRV_NEED_MAPPING 0x0001
+/** Device needs PCI BAR mapping with enabled write combining (wc) */
+#define RTE_PCI_DRV_WC_ACTIVATE 0x0002
+/** Device already probed can be probed again to check for new ports. */
+#define RTE_PCI_DRV_PROBE_AGAIN 0x0004
+/** Device driver supports link state interrupt */
+#define RTE_PCI_DRV_INTR_LSC	0x0008
+/** Device driver supports device removal interrupt */
+#define RTE_PCI_DRV_INTR_RMV 0x0010
+/** Device driver needs to keep mapped resources if unsupported dev detected */
+#define RTE_PCI_DRV_KEEP_MAPPED_RES 0x0020
+/** Device driver needs IOVA as VA and cannot work with IOVA as PA */
+#define RTE_PCI_DRV_NEED_IOVA_AS_VA 0x0040
+
+/**
+ * Map the PCI device resources in user space virtual memory address
+ *
+ * Note that driver should not call this function when flag
+ * RTE_PCI_DRV_NEED_MAPPING is set, as EAL will do that for
+ * you when it's on.
+ *
+ * @param dev
+ *   A pointer to a rte_pci_device structure describing the device
+ *   to use
+ *
+ * @return
+ *   0 on success, negative on error and positive if no driver
+ *   is found for the device.
+ */
+int rte_pci_map_device(struct rte_pci_device *dev);
+
+/**
+ * Unmap this device
+ *
+ * @param dev
+ *   A pointer to a rte_pci_device structure describing the device
+ *   to use
+ */
+void rte_pci_unmap_device(struct rte_pci_device *dev);
+
+/**
+ * Dump the content of the PCI bus.
+ *
+ * @param f
+ *   A pointer to a file for output
+ */
+void rte_pci_dump(FILE *f);
+
+/**
+ * Register a PCI driver.
+ *
+ * @param driver
+ *   A pointer to a rte_pci_driver structure describing the driver
+ *   to be registered.
+ */
+void rte_pci_register(struct rte_pci_driver *driver);
+
+/** Helper for PCI device registration from driver (eth, crypto) instance */
+#define RTE_PMD_REGISTER_PCI(nm, pci_drv) \
+RTE_INIT(pciinitfn_ ##nm) \
+{\
+	(pci_drv).driver.name = RTE_STR(nm);\
+	rte_pci_register(&pci_drv); \
+} \
+RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
+
+/**
+ * Unregister a PCI driver.
+ *
+ * @param driver
+ *   A pointer to a rte_pci_driver structure describing the driver
+ *   to be unregistered.
+ */
+void rte_pci_unregister(struct rte_pci_driver *driver);
+
+/**
+ * Read PCI config space.
+ *
+ * @param device
+ *   A pointer to a rte_pci_device structure describing the device
+ *   to use
+ * @param buf
+ *   A data buffer where the bytes should be read into
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into PCI config space
+ * @return
+ *  Number of bytes read on success, negative on error.
+ */
+int rte_pci_read_config(const struct rte_pci_device *device,
+		void *buf, size_t len, off_t offset);
+
+/**
+ * Write PCI config space.
+ *
+ * @param device
+ *   A pointer to a rte_pci_device structure describing the device
+ *   to use
+ * @param buf
+ *   A data buffer containing the bytes should be written
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into PCI config space
+ */
+int rte_pci_write_config(const struct rte_pci_device *device,
+		const void *buf, size_t len, off_t offset);
+
+/**
+ * A structure used to access io resources for a pci device.
+ * rte_pci_ioport is arch, os, driver specific, and should not be used outside
+ * of pci ioport api.
+ */
+struct rte_pci_ioport {
+	struct rte_pci_device *dev;
+	uint64_t base;
+	uint64_t len; /* only filled for memory mapped ports */
+};
+
+/**
+ * Initialize a rte_pci_ioport object for a pci device io resource.
+ *
+ * This object is then used to gain access to those io resources (see below).
+ *
+ * @param dev
+ *   A pointer to a rte_pci_device structure describing the device
+ *   to use.
+ * @param bar
+ *   Index of the io pci resource we want to access.
+ * @param p
+ *   The rte_pci_ioport object to be initialized.
+ * @return
+ *  0 on success, negative on error.
+ */
+int rte_pci_ioport_map(struct rte_pci_device *dev, int bar,
+		struct rte_pci_ioport *p);
+
+/**
+ * Release any resources used in a rte_pci_ioport object.
+ *
+ * @param p
+ *   The rte_pci_ioport object to be uninitialized.
+ * @return
+ *  0 on success, negative on error.
+ */
+int rte_pci_ioport_unmap(struct rte_pci_ioport *p);
+
+/**
+ * Read from a io pci resource.
+ *
+ * @param p
+ *   The rte_pci_ioport object from which we want to read.
+ * @param data
+ *   A data buffer where the bytes should be read into
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into the pci io resource.
+ */
+void rte_pci_ioport_read(struct rte_pci_ioport *p,
+		void *data, size_t len, off_t offset);
+
+/**
+ * Write to a io pci resource.
+ *
+ * @param p
+ *   The rte_pci_ioport object to which we want to write.
+ * @param data
+ *   A data buffer where the bytes should be read into
+ * @param len
+ *   The length of the data buffer.
+ * @param offset
+ *   The offset into the pci io resource.
+ */
+void rte_pci_ioport_write(struct rte_pci_ioport *p,
+		const void *data, size_t len, off_t offset);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_BUS_PCI_H_ */
diff --git a/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci_version.map b/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci_version.map
new file mode 100644
index 000000000..012d817e1
--- /dev/null
+++ b/src/spdk/dpdk/drivers/bus/pci/rte_bus_pci_version.map
@@ -0,0 +1,18 @@
+DPDK_20.0 {
+	global:
+
+	rte_pci_dump;
+	rte_pci_get_sysfs_path;
+	rte_pci_ioport_map;
+	rte_pci_ioport_read;
+	rte_pci_ioport_unmap;
+	rte_pci_ioport_write;
+	rte_pci_map_device;
+	rte_pci_read_config;
+	rte_pci_register;
+	rte_pci_unmap_device;
+	rte_pci_unregister;
+	rte_pci_write_config;
+
+	local: *;
+};