@@ -134,6 +134,11 @@ CONFIG_RTE_LIBRTE_PCI_BUS=y
CONFIG_RTE_LIBRTE_VDEV_BUS=y
#
+# Compile the Intel FPGA bus
+#
+CONFIG_RTE_LIBRTE_IFPGA_BUS=y
+
+#
# Compile ARK PMD
#
CONFIG_RTE_LIBRTE_ARK_PMD=y
@@ -7,5 +7,6 @@ DIRS-$(CONFIG_RTE_LIBRTE_DPAA_BUS) += dpaa
DIRS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc
DIRS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci
DIRS-$(CONFIG_RTE_LIBRTE_VDEV_BUS) += vdev
+DIRS-$(CONFIG_RTE_LIBRTE_IFPGA_BUS) += ifpga
include $(RTE_SDK)/mk/rte.subdir.mk
new file mode 100644
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Intel Corporation
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+#
+# library name
+#
+LIB = librte_bus_ifpga.a
+
+CFLAGS += -DALLOW_EXPERIMENTAL_API
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+LDLIBS += -lrte_eal
+LDLIBS += -lrte_rawdev
+LDLIBS += -lrte_kvargs
+
+# versioning export map
+EXPORT_MAP := rte_bus_ifpga_version.map
+
+# library version
+LIBABIVER := 1
+
+SRCS-$(CONFIG_RTE_LIBRTE_IFPGA_BUS) += ifpga_bus.c
+SRCS-$(CONFIG_RTE_LIBRTE_IFPGA_BUS) += ifpga_common.c
+
+#
+# Export include files
+#
+SYMLINK-$(CONFIG_RTE_LIBRTE_IFPGA_BUS)-include += rte_bus_ifpga.h
+
+include $(RTE_SDK)/mk/rte.lib.mk
new file mode 100644
@@ -0,0 +1,504 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/queue.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <rte_errno.h>
+#include <rte_bus.h>
+#include <rte_per_lcore.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_common.h>
+
+#include <rte_devargs.h>
+#include <rte_kvargs.h>
+#include <rte_alarm.h>
+
+#include "rte_rawdev.h"
+#include "rte_rawdev_pmd.h"
+#include "rte_bus_ifpga.h"
+#include "ifpga_logs.h"
+#include "ifpga_common.h"
+
+int ifpga_bus_logtype;
+
+/* Forward declare to access Intel FPGA bus name */
+static struct rte_bus rte_ifpga_bus;
+
+/** Double linked list of IFPGA device. */
+TAILQ_HEAD(ifpga_device_list, rte_ifpga_device);
+
+static struct ifpga_device_list ifpga_device_list =
+ TAILQ_HEAD_INITIALIZER(ifpga_device_list);
+struct afu_driver_list afu_driver_list =
+ TAILQ_HEAD_INITIALIZER(afu_driver_list);
+
+
+/* register a ifpga bus based driver */
+void rte_ifpga_driver_register(struct rte_afu_driver *driver)
+{
+ RTE_VERIFY(driver);
+
+ TAILQ_INSERT_TAIL(&afu_driver_list, driver, next);
+}
+
+/* un-register a fpga bus based driver */
+void rte_ifpga_driver_unregister(struct rte_afu_driver *driver)
+{
+ TAILQ_REMOVE(&afu_driver_list, driver, next);
+}
+
+static struct rte_ifpga_device *
+ifpga_find_ifpga_dev(const struct rte_rawdev *rdev)
+{
+ struct rte_ifpga_device *ifpga_dev = NULL;
+
+ TAILQ_FOREACH(ifpga_dev, &ifpga_device_list, next) {
+ if (rdev &&
+ ifpga_dev->rdev &&
+ ifpga_dev->rdev == rdev)
+ return ifpga_dev;
+ }
+ return NULL;
+}
+
+static struct rte_afu_device *
+ifpga_find_afu_dev(const struct rte_ifpga_device *ifpga_dev,
+ const struct rte_afu_id *afu_id)
+{
+ struct rte_afu_device *afu_dev = NULL;
+
+ TAILQ_FOREACH(afu_dev, &ifpga_dev->afu_list, next) {
+ if (!ifpga_afu_id_cmp(&afu_dev->id, afu_id))
+ return afu_dev;
+ }
+ return NULL;
+}
+
+static const char * const valid_args[] = {
+#define IFPGA_ARG_NAME "ifpga"
+ IFPGA_ARG_NAME,
+#define IFPGA_ARG_PORT "port"
+ IFPGA_ARG_PORT,
+#define IFPGA_AFU_BTS "afu_bts"
+ IFPGA_AFU_BTS,
+ NULL
+};
+
+/*
+ * Scan the content of the FPGA bus, and the devices in the devices
+ * list
+ */
+static struct rte_afu_device *
+rte_ifpga_scan_one(struct rte_devargs *devargs,
+ struct rte_ifpga_device *ifpga_dev)
+{
+ struct rte_kvargs *kvlist = NULL;
+ struct rte_rawdev *rawdev = NULL;
+ struct rte_afu_device *afu_dev = NULL;
+ struct rte_afu_pr_conf afu_pr_conf;
+ int ret = 0;
+ char *path = NULL;
+
+ memset((char *)(&afu_pr_conf), 0, sizeof(struct rte_afu_pr_conf));
+
+ kvlist = rte_kvargs_parse(devargs->args, valid_args);
+ if (!kvlist) {
+ IFPGA_BUS_ERR("error when parsing param");
+ goto end;
+ }
+
+ if (rte_kvargs_count(kvlist, IFPGA_ARG_PORT) == 1) {
+ if (rte_kvargs_process(kvlist, IFPGA_ARG_PORT,
+ &ifpga_get_integer32_arg, &afu_pr_conf.afu_id.port) < 0) {
+ IFPGA_BUS_ERR("error to parse %s",
+ IFPGA_ARG_PORT);
+ goto end;
+ }
+ } else {
+ IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
+ IFPGA_ARG_PORT);
+ goto end;
+ }
+
+ if (rte_kvargs_count(kvlist, IFPGA_AFU_BTS) == 1) {
+ if (rte_kvargs_process(kvlist, IFPGA_AFU_BTS,
+ &ifpga_get_string_arg, &path) < 0) {
+ IFPGA_BUS_ERR("error to parse %s",
+ IFPGA_AFU_BTS);
+ goto end;
+ }
+ } else {
+ IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
+ IFPGA_AFU_BTS);
+ goto end;
+ }
+
+ afu_pr_conf.afu_id.uuid_low = 0;
+ afu_pr_conf.afu_id.uuid_high = 0;
+ afu_pr_conf.pr_enable = path?1:0;
+
+ rawdev = ifpga_dev->rdev;
+ if (ifpga_find_afu_dev(ifpga_dev, &afu_pr_conf.afu_id))
+ goto end;
+
+ afu_dev = calloc(1, sizeof(*afu_dev));
+ if (!afu_dev)
+ goto end;
+
+ afu_dev->device.devargs = devargs;
+ afu_dev->device.numa_node = SOCKET_ID_ANY;
+ afu_dev->device.name = devargs->name;
+ afu_dev->rawdev = rawdev;
+ afu_dev->id.uuid_low = 0;
+ afu_dev->id.uuid_high = 0;
+ afu_dev->id.port = afu_pr_conf.afu_id.port;
+ afu_dev->ifpga_dev = ifpga_dev;
+
+ if (rawdev->dev_ops && rawdev->dev_ops->dev_info_get)
+ rawdev->dev_ops->dev_info_get(rawdev, afu_dev);
+
+ if (rawdev->dev_ops &&
+ rawdev->dev_ops->dev_start &&
+ rawdev->dev_ops->dev_start(rawdev))
+ goto free_dev;
+
+ strncpy(afu_pr_conf.bs_path, path, strlen(afu_pr_conf.bs_path));
+ if (rawdev->dev_ops->firmware_load &&
+ rawdev->dev_ops->firmware_load(rawdev,
+ &afu_pr_conf)){
+ printf("firmware load error %d\n", ret);
+ goto free_dev;
+ }
+ afu_dev->id.uuid_low = afu_pr_conf.afu_id.uuid_low;
+ afu_dev->id.uuid_high = afu_pr_conf.afu_id.uuid_high;
+
+
+ return afu_dev;
+
+free_dev:
+ free(afu_dev);
+end:
+ if (kvlist)
+ rte_kvargs_free(kvlist);
+ if (path)
+ free(path);
+
+ return NULL;
+}
+
+/*
+ * Scan the content of the FPGA bus, and the devices in the devices
+ * list
+ */
+static int
+rte_ifpga_scan(void)
+{
+ struct rte_ifpga_device *ifpga_dev;
+ struct rte_devargs *devargs;
+ struct rte_kvargs *kvlist = NULL;
+ struct rte_rawdev *rawdev = NULL;
+ char *name = NULL;
+ char name1[RTE_RAWDEV_NAME_MAX_LEN];
+ struct rte_afu_device *afu_dev = NULL;
+
+ /* for FPGA devices we scan the devargs_list populated via cmdline */
+ TAILQ_FOREACH(devargs, &devargs_list, next) {
+ if (devargs->bus != &rte_ifpga_bus)
+ continue;
+
+ kvlist = rte_kvargs_parse(devargs->args, valid_args);
+ if (!kvlist) {
+ IFPGA_BUS_ERR("error when parsing param");
+ goto end;
+ }
+
+ if (rte_kvargs_count(kvlist, IFPGA_ARG_NAME) == 1) {
+ if (rte_kvargs_process(kvlist, IFPGA_ARG_NAME,
+ &ifpga_get_string_arg, &name) < 0) {
+ IFPGA_BUS_ERR("error to parse %s",
+ IFPGA_ARG_NAME);
+ goto end;
+ }
+ } else {
+ IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
+ IFPGA_ARG_NAME);
+ goto end;
+ }
+
+ memset(name1, 0, sizeof(name1));
+ snprintf(name1, RTE_RAWDEV_NAME_MAX_LEN, "IFPGA:%s", name);
+
+ rawdev = rte_rawdev_pmd_get_named_dev(name1);
+ if (!rawdev)
+ goto end;
+
+ if (ifpga_find_ifpga_dev(rawdev))
+ continue;
+
+ ifpga_dev = calloc(1, sizeof(*ifpga_dev));
+ if (!ifpga_dev)
+ goto end;
+
+ ifpga_dev->rdev = rawdev;
+ TAILQ_INIT(&ifpga_dev->afu_list);
+
+ TAILQ_INSERT_TAIL(&ifpga_device_list, ifpga_dev, next);
+ afu_dev = rte_ifpga_scan_one(devargs, ifpga_dev);
+ if (afu_dev != NULL)
+ TAILQ_INSERT_TAIL(&ifpga_dev->afu_list, afu_dev, next);
+ }
+
+end:
+ if (kvlist)
+ rte_kvargs_free(kvlist);
+ if (name)
+ free(name);
+
+ return 0;
+}
+
+/*
+ * Match the AFU Driver and AFU Device using the ID Table
+ */
+static int
+rte_afu_match(const struct rte_afu_driver *afu_drv,
+ const struct rte_afu_device *afu_dev)
+{
+ const struct rte_afu_uuid *id_table;
+
+ for (id_table = afu_drv->id_table;
+ ((id_table->uuid_low != 0) && (id_table->uuid_high != 0));
+ id_table++) {
+ /* check if device's identifiers match the driver's ones */
+ if ((id_table->uuid_low != afu_dev->id.uuid_low) ||
+ (id_table->uuid_high != afu_dev->id.uuid_high))
+ continue;
+
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
+ifpga_probe_one_driver(struct rte_afu_driver *drv,
+ struct rte_afu_device *afu_dev)
+{
+ int ret;
+
+ if (!rte_afu_match(drv, afu_dev))
+ /* Match of device and driver failed */
+ return 1;
+
+ /* reference driver structure */
+ afu_dev->driver = drv;
+ afu_dev->device.driver = &drv->driver;
+
+ /* call the driver probe() function */
+ ret = drv->probe(afu_dev);
+ if (ret) {
+ afu_dev->driver = NULL;
+ afu_dev->device.driver = NULL;
+ }
+
+ /* return positive value if driver doesn't support this device */
+ return 0;
+}
+
+static int
+ifpga_probe_all_drivers(struct rte_afu_device *afu_dev)
+{
+ struct rte_afu_driver *drv = NULL;
+ int rc;
+
+ if (afu_dev == NULL)
+ return -1;
+
+ /* Check if a driver is already loaded */
+ if (afu_dev->driver != NULL)
+ return 0;
+
+ TAILQ_FOREACH(drv, &afu_driver_list, next) {
+ rc = ifpga_probe_one_driver(drv, afu_dev);
+ if (rc < 0)
+ /* negative value is an error */
+ return -1;
+ if (rc > 0)
+ /* positive value means driver doesn't support it */
+ continue;
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Scan the content of the Intel FPGA bus, and call the probe() function for
+ * all registered drivers that have a matching entry in its id_table
+ * for discovered devices.
+ */
+static int
+rte_ifpga_probe(void)
+{
+ struct rte_ifpga_device *ifpga_dev;
+ struct rte_afu_device *afu_dev = NULL;
+ int ret = 0;
+
+ TAILQ_FOREACH(ifpga_dev, &ifpga_device_list, next) {
+ TAILQ_FOREACH(afu_dev, &ifpga_dev->afu_list, next) {
+
+ if (afu_dev->device.driver)
+ continue;
+
+ ret = ifpga_probe_all_drivers(afu_dev);
+ if (ret < 0)
+ IFPGA_BUS_ERR("failed to initialize %s device\n",
+ rte_ifpga_device_name(afu_dev));
+ }
+ }
+
+ return 0;
+}
+
+static int
+rte_ifpga_plug(struct rte_device *dev)
+{
+ return ifpga_probe_all_drivers(RTE_DEV_TO_AFU(dev));
+}
+
+static int ifpga_remove_driver(struct rte_afu_device *afu_dev)
+{
+ const char *name;
+ const struct rte_afu_driver *driver;
+
+ name = rte_ifpga_device_name(afu_dev);
+ if (!afu_dev->device.driver) {
+ IFPGA_BUS_DEBUG("no driver attach to device %s\n", name);
+ return 1;
+ }
+
+ driver = RTE_DRV_TO_AFU_CONST(afu_dev->device.driver);
+ return driver->remove(afu_dev);
+}
+
+static int
+rte_ifpga_unplug(struct rte_device *dev)
+{
+ struct rte_ifpga_device *ifpga_dev = NULL;
+ struct rte_afu_device *afu_dev = NULL;
+ struct rte_devargs *devargs = NULL;
+ int ret;
+
+ if (dev == NULL)
+ return -EINVAL;
+
+ afu_dev = RTE_DEV_TO_AFU(dev);
+ if (!dev)
+ return -ENOENT;
+
+ ifpga_dev = afu_dev->ifpga_dev;
+ devargs = dev->devargs;
+
+ ret = ifpga_remove_driver(afu_dev);
+ if (ret)
+ return ret;
+
+ TAILQ_REMOVE(&ifpga_dev->afu_list, afu_dev, next);
+
+ TAILQ_REMOVE(&devargs_list, devargs, next);
+
+ free(devargs->args);
+ free(devargs);
+ free(afu_dev);
+ return 0;
+
+}
+
+static struct rte_device *
+rte_ifpga_find_device(const struct rte_device *start,
+ rte_dev_cmp_t cmp, const void *data)
+{
+ struct rte_ifpga_device *ifpga_dev;
+ struct rte_afu_device *afu_dev;
+
+ TAILQ_FOREACH(ifpga_dev, &ifpga_device_list, next) {
+ TAILQ_FOREACH(afu_dev, &ifpga_dev->afu_list, next) {
+ if (start && &afu_dev->device == start) {
+ start = NULL;
+ continue;
+ }
+ if (cmp(&afu_dev->device, data) == 0)
+ return &afu_dev->device;
+ }
+ }
+ return NULL;
+}
+static int
+rte_ifpga_parse(const char *name, void *addr)
+{
+ int *out = addr;
+ struct rte_rawdev *rawdev = NULL;
+ char rawdev_name[RTE_RAWDEV_NAME_MAX_LEN];
+ char *c1 = NULL, *c2 = NULL;
+ int port = IFPGA_BUS_DEV_PORT_MAX;
+ char str_port[8];
+ int str_port_len = 0;
+
+ memset(str_port, 0, 8);
+ c1 = strchr(name, '|');
+ if (c1 != NULL) {
+ str_port_len = c1-name;
+ c2 = c1+1;
+ }
+
+ if (str_port_len < 8 &&
+ str_port_len > 0) {
+ memcpy(str_port, name, str_port_len);
+ sscanf(str_port, "%d", &port);
+ }
+
+ memset(rawdev_name, 0, sizeof(rawdev_name));
+ snprintf(rawdev_name, RTE_RAWDEV_NAME_MAX_LEN, "IFPGA:%s", c2);
+ rawdev = rte_rawdev_pmd_get_named_dev(rawdev_name);
+
+ if ((port < IFPGA_BUS_DEV_PORT_MAX) &&
+ rawdev &&
+ (addr != NULL))
+ *out = port;
+
+ if ((port < IFPGA_BUS_DEV_PORT_MAX) &&
+ rawdev)
+ return 0;
+ else
+ return 1;
+}
+
+static struct rte_bus rte_ifpga_bus = {
+ .scan = rte_ifpga_scan,
+ .probe = rte_ifpga_probe,
+ .find_device = rte_ifpga_find_device,
+ .plug = rte_ifpga_plug,
+ .unplug = rte_ifpga_unplug,
+ .parse = rte_ifpga_parse,
+};
+
+RTE_REGISTER_BUS(IFPGA_BUS_NAME, rte_ifpga_bus);
+
+RTE_INIT(ifpga_init_log)
+{
+ ifpga_bus_logtype = rte_log_register("bus.ifpga");
+ if (ifpga_bus_logtype >= 0)
+ rte_log_set_level(ifpga_bus_logtype, RTE_LOG_NOTICE);
+}
+
new file mode 100644
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/queue.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <rte_errno.h>
+#include <rte_bus.h>
+#include <rte_per_lcore.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_common.h>
+
+#include <rte_devargs.h>
+#include <rte_kvargs.h>
+#include <rte_alarm.h>
+
+#include "rte_bus_ifpga.h"
+#include "ifpga_logs.h"
+#include "ifpga_common.h"
+
+int ifpga_get_string_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (!value || !extra_args)
+ return -EINVAL;
+
+ *(char **)extra_args = strdup(value);
+
+ if (!*(char **)extra_args)
+ return -ENOMEM;
+
+ return 0;
+}
+int ifpga_get_integer32_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (!value || !extra_args)
+ return -EINVAL;
+
+ *(int *)extra_args = strtoull(value, NULL, 0);
+
+ return 0;
+}
+int ifpga_get_integer64_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (!value || !extra_args)
+ return -EINVAL;
+
+ *(uint64_t *)extra_args = strtoull(value, NULL, 0);
+
+ return 0;
+}
+int ifpga_get_unsigned_long(const char *str, int base)
+{
+ unsigned long num;
+ char *end = NULL;
+
+ errno = 0;
+
+ num = strtoul(str, &end, base);
+ if ((str[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
+ return -1;
+
+ return num;
+}
+
+int ifpga_afu_id_cmp(const struct rte_afu_id *afu_id0,
+ const struct rte_afu_id *afu_id1)
+{
+ if ((afu_id0->uuid_low == afu_id1->uuid_low) &&
+ (afu_id0->uuid_high == afu_id1->uuid_high) &&
+ (afu_id0->port == afu_id1->port)) {
+ return 0;
+ } else
+ return 1;
+}
new file mode 100644
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#ifndef _IFPGA_COMMON_H_
+#define _IFPGA_COMMON_H_
+
+int ifpga_get_string_arg(const char *key __rte_unused,
+ const char *value, void *extra_args);
+int ifpga_get_integer32_arg(const char *key __rte_unused,
+ const char *value, void *extra_args);
+int ifpga_get_integer64_arg(const char *key __rte_unused,
+ const char *value, void *extra_args);
+int ifpga_get_unsigned_long(const char *str, int base);
+int ifpga_afu_id_cmp(const struct rte_afu_id *afu_id0,
+ const struct rte_afu_id *afu_id1);
+
+#endif /* _IFPGA_COMMON_H_ */
new file mode 100644
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#ifndef _IFPGA_LOGS_H_
+#define _IFPGA_LOGS_H_
+
+#include <rte_log.h>
+
+extern int ifpga_bus_logtype;
+
+#define IFPGA_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, ifpga_bus_logtype, "%s(): " fmt "\n", \
+ __func__, ##args)
+
+#define IFPGA_BUS_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, ifpga_bus_logtype, "%s(): " fmt "\n", \
+ __func__, ##args)
+
+#define IFPGA_BUS_FUNC_TRACE() IFPGA_BUS_LOG(DEBUG, ">>")
+
+#define IFPGA_BUS_DEBUG(fmt, args...) \
+ IFPGA_BUS_LOG(DEBUG, fmt, ## args)
+#define IFPGA_BUS_INFO(fmt, args...) \
+ IFPGA_BUS_LOG(INFO, fmt, ## args)
+#define IFPGA_BUS_ERR(fmt, args...) \
+ IFPGA_BUS_LOG(ERR, fmt, ## args)
+#define IFPGA_BUS_WARN(fmt, args...) \
+ IFPGA_BUS_LOG(WARNING, fmt, ## args)
+
+#endif /* _IFPGA_BUS_LOGS_H_ */
new file mode 100644
@@ -0,0 +1,168 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
+ */
+
+#ifndef _RTE_BUS_IFPGA_H_
+#define _RTE_BUS_IFPGA_H_
+
+/**
+ * @file
+ *
+ * RTE Intel FPGA Bus Interface
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_bus.h>
+#include <rte_pci.h>
+
+/** Name of Intel FPGA Bus */
+#define IFPGA_BUS_NAME ifpga
+
+/* Forward declarations */
+struct rte_afu_device;
+
+/** List of Intel AFU devices */
+TAILQ_HEAD(afu_device_list, rte_afu_device);
+/** Double linked list of AFU device drivers. */
+TAILQ_HEAD(afu_driver_list, rte_afu_driver);
+
+#define IFPGA_BUS_BITSTREAM_PATH_MAX_LEN 256
+
+struct rte_afu_uuid {
+ uint64_t uuid_low;
+ uint64_t uuid_high;
+} __attribute__ ((packed));
+
+#define IFPGA_BUS_DEV_PORT_MAX 4
+
+/**
+ * A structure describing an ID for a AFU driver. Each driver provides a
+ * table of these IDs for each device that it supports.
+ */
+struct rte_afu_id {
+ uint64_t uuid_low;
+ uint64_t uuid_high;
+ int port;
+} __attribute__ ((packed));
+
+/**
+ * A structure pr configuration AFU driver.
+ */
+
+struct rte_afu_pr_conf {
+ struct rte_afu_id afu_id;
+ int pr_enable;
+ char bs_path[IFPGA_BUS_BITSTREAM_PATH_MAX_LEN];
+};
+
+#define AFU_PRI_STR_SIZE (PCI_PRI_STR_SIZE + 8)
+
+/**
+ * A structure describing a fpga device.
+ */
+struct rte_ifpga_device {
+ TAILQ_ENTRY(rte_ifpga_device) next; /**< Next in device list. */
+ struct rte_rawdev *rdev;
+ struct afu_device_list afu_list; /**< List of AFU devices */
+};
+
+/**
+ * A structure describing a AFU device.
+ */
+struct rte_afu_device {
+ TAILQ_ENTRY(rte_afu_device) next; /**< Next in device list. */
+ struct rte_device device; /**< Inherit core device */
+ struct rte_rawdev *rawdev; /**< Point Rawdev */
+ struct rte_ifpga_device *ifpga_dev; /**< Point ifpga device */
+ struct rte_afu_id id; /**< AFU id within FPGA. */
+ uint32_t num_region; /**< number of regions found */
+ struct rte_mem_resource mem_resource[PCI_MAX_RESOURCE];
+ /**< AFU Memory Resource */
+ struct rte_intr_handle intr_handle; /**< Interrupt handle */
+ struct rte_afu_driver *driver; /**< Associated driver */
+ char path[IFPGA_BUS_BITSTREAM_PATH_MAX_LEN];
+} __attribute__ ((packed));
+
+/**
+ * @internal
+ * Helper macro for drivers that need to convert to struct rte_afu_device.
+ */
+#define RTE_DEV_TO_AFU(ptr) \
+ container_of(ptr, struct rte_afu_device, device)
+
+#define RTE_DRV_TO_AFU_CONST(ptr) \
+ container_of(ptr, const struct rte_afu_driver, driver)
+
+/**
+ * Initialisation function for the driver called during FPGA BUS probing.
+ */
+typedef int (afu_probe_t)(struct rte_afu_device *);
+
+/**
+ * Uninitialisation function for the driver called during hotplugging.
+ */
+typedef int (afu_remove_t)(struct rte_afu_device *);
+
+/**
+ * A structure describing a AFU device.
+ */
+struct rte_afu_driver {
+ TAILQ_ENTRY(rte_afu_driver) next; /**< Next afu driver. */
+ struct rte_driver driver; /**< Inherit core driver. */
+ afu_probe_t *probe; /**< Device Probe function. */
+ afu_remove_t *remove; /**< Device Remove function. */
+ const struct rte_afu_uuid *id_table; /**< AFU uuid within FPGA. */
+ uint32_t drv_flags; /**< Flags contolling handling of device. */
+};
+
+/**
+ * Structure describing the Intel FPGA bus
+ */
+struct rte_ifpga_bus {
+ struct rte_bus bus; /**< Inherit the generic class */
+};
+
+static inline const char *
+rte_ifpga_device_name(const struct rte_afu_device *afu)
+{
+ if (afu && afu->device.name)
+ return afu->device.name;
+ return NULL;
+}
+
+/**
+ * Register a ifpga afu device driver.
+ *
+ * @param driver
+ * A pointer to a rte_afu_driver structure describing the driver
+ * to be registered.
+ */
+void rte_ifpga_driver_register(struct rte_afu_driver *driver);
+
+/**
+ * Unregister a ifpga afu device driver.
+ *
+ * @param driver
+ * A pointer to a rte_afu_driver structure describing the driver
+ * to be unregistered.
+ */
+void rte_ifpga_driver_unregister(struct rte_afu_driver *driver);
+
+#define RTE_PMD_REGISTER_AFU(nm, afudrv)\
+RTE_INIT(afudrvinitfn_ ##afudrv);\
+static const char *afudrvinit_ ## nm ## _alias;\
+static void afudrvinitfn_ ##afudrv(void)\
+{\
+ (afudrv).driver.name = RTE_STR(nm);\
+ (afudrv).driver.alias = afudrvinit_ ## nm ## _alias;\
+ rte_ifpga_driver_register(&afudrv);\
+} \
+RTE_PMD_EXPORT_NAME(nm, __COUNTER__)
+
+#define RTE_PMD_REGISTER_AFU_ALIAS(nm, alias)\
+static const char *afudrvinit_ ## nm ## _alias = RTE_STR(alias)
+
+#endif /* _RTE_BUS_IFPGA_H_ */
new file mode 100644
@@ -0,0 +1,10 @@
+DPDK_18.05 {
+ global:
+
+ rte_ifpga_driver_register;
+ rte_ifpga_driver_unregister;
+ ifpga_get_string_arg;
+ ifpga_get_integer32_arg;
+
+ local: *;
+};
@@ -107,6 +107,8 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_CMDLINE) += -lrte_cmdline
_LDLIBS-$(CONFIG_RTE_LIBRTE_REORDER) += -lrte_reorder
_LDLIBS-$(CONFIG_RTE_LIBRTE_SCHED) += -lrte_sched
+_LDLIBS-$(CONFIG_RTE_LIBRTE_IFPGA_BUS) += -lrte_bus_ifpga
+
ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
_LDLIBS-$(CONFIG_RTE_LIBRTE_KNI) += -lrte_kni
endif