[PATCH v3 4/9] common/sxe2: add base driver skeleton
liujie5 at linkdatatechnology.com
liujie5 at linkdatatechnology.com
Thu Apr 30 12:18:12 CEST 2026
From: Jie Liu <liujie5 at linkdatatechnology.com>
Initialize the sxe2 PMD skeleton by implementing the PCI probe and
remove functions. This includes the setup and cleanup of a character
device used for control path communication between the user space
and the hardware.
The character device provides an interface for ioctl-based management
operations, supporting device-specific configuration.
Signed-off-by: Jie Liu <liujie5 at linkdatatechnology.com>
---
drivers/common/sxe2/meson.build | 2 +
drivers/common/sxe2/sxe2_common.c | 636 +++++++++++++++++++++
drivers/common/sxe2/sxe2_common.h | 86 +++
drivers/common/sxe2/sxe2_ioctl_chnl.c | 161 ++++++
drivers/common/sxe2/sxe2_ioctl_chnl.h | 141 +++++
drivers/common/sxe2/sxe2_ioctl_chnl_func.h | 45 ++
6 files changed, 1071 insertions(+)
create mode 100644 drivers/common/sxe2/sxe2_common.c
create mode 100644 drivers/common/sxe2/sxe2_common.h
create mode 100644 drivers/common/sxe2/sxe2_ioctl_chnl.c
create mode 100644 drivers/common/sxe2/sxe2_ioctl_chnl.h
create mode 100644 drivers/common/sxe2/sxe2_ioctl_chnl_func.h
diff --git a/drivers/common/sxe2/meson.build b/drivers/common/sxe2/meson.build
index 7d448629d5..3626fb1119 100644
--- a/drivers/common/sxe2/meson.build
+++ b/drivers/common/sxe2/meson.build
@@ -9,5 +9,7 @@ cflags += [
deps += ['bus_pci', 'net', 'eal', 'ethdev']
sources = files(
+ 'sxe2_common.c',
'sxe2_common_log.c',
+ 'sxe2_ioctl_chnl.c',
)
diff --git a/drivers/common/sxe2/sxe2_common.c b/drivers/common/sxe2/sxe2_common.c
new file mode 100644
index 0000000000..dfdefb8b78
--- /dev/null
+++ b/drivers/common/sxe2/sxe2_common.c
@@ -0,0 +1,636 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2025, Wuxi Stars Micro System Technologies Co., Ltd.
+ */
+
+#include <rte_version.h>
+#include <rte_pci.h>
+#include <rte_dev.h>
+#include <rte_devargs.h>
+#include <rte_class.h>
+#include <rte_malloc.h>
+#include <rte_errno.h>
+#include <rte_fbarray.h>
+#include <rte_eal.h>
+#include <eal_private.h>
+#include <eal_memcfg.h>
+#include <bus_driver.h>
+#include <bus_pci_driver.h>
+#include <eal_export.h>
+
+#include "sxe2_errno.h"
+#include "sxe2_common.h"
+#include "sxe2_common_log.h"
+#include "sxe2_ioctl_chnl_func.h"
+
+static TAILQ_HEAD(sxe2_class_drivers, sxe2_class_driver) sxe2_class_drivers_list =
+ TAILQ_HEAD_INITIALIZER(sxe2_class_drivers_list);
+
+static TAILQ_HEAD(sxe2_common_devices, sxe2_common_device) sxe2_common_devices_list =
+ TAILQ_HEAD_INITIALIZER(sxe2_common_devices_list);
+
+static pthread_mutex_t sxe2_common_devices_list_lock;
+
+static struct rte_pci_id *sxe2_common_pci_id_table;
+
+static const struct {
+ const s8 *name;
+ u32 class_type;
+} sxe2_class_types[] = {
+ { .name = "eth", .class_type = SXE2_CLASS_TYPE_ETH },
+ { .name = "vdpa", .class_type = SXE2_CLASS_TYPE_VDPA },
+};
+
+static u32 sxe2_class_name_to_value(const s8 *class_name)
+{
+ u32 class_type = SXE2_CLASS_TYPE_INVALID;
+ u32 i;
+
+ for (i = 0; i < RTE_DIM(sxe2_class_types); i++) {
+ if (strcmp(class_name, sxe2_class_types[i].name) == 0)
+ class_type = sxe2_class_types[i].class_type;
+ }
+
+ return class_type;
+}
+
+static struct sxe2_common_device *sxe2_rtedev_to_cdev(struct rte_device *rte_dev)
+{
+ struct sxe2_common_device *cdev = NULL;
+
+ TAILQ_FOREACH(cdev, &sxe2_common_devices_list, next) {
+ if (rte_dev == cdev->dev)
+ goto l_end;
+ }
+
+ cdev = NULL;
+l_end:
+ return cdev;
+}
+
+static struct sxe2_class_driver *sxe2_class_driver_get(u32 class_type)
+{
+ struct sxe2_class_driver *cdrv = NULL;
+
+ TAILQ_FOREACH(cdrv, &sxe2_class_drivers_list, next) {
+ if (cdrv->drv_class == class_type)
+ goto l_end;
+ }
+
+ cdrv = NULL;
+l_end:
+ return cdrv;
+}
+
+static s32 sxe2_kvargs_preprocessing(struct sxe2_dev_kvargs_info *kv_info,
+ const struct rte_devargs *devargs)
+{
+ const struct rte_kvargs_pair *pair;
+ struct rte_kvargs *kvlist;
+ s32 ret = SXE2_ERROR;
+ u32 i;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (kvlist == NULL) {
+ ret = SXE2_ERR_INVAL;
+ goto l_end;
+ }
+
+ for (i = 0; i < kvlist->count; i++) {
+ pair = &kvlist->pairs[i];
+ if (pair->value == NULL || *(pair->value) == '\0') {
+ PMD_LOG_ERR(COM, "Key %s has no value.", pair->key);
+ rte_kvargs_free(kvlist);
+ ret = SXE2_ERR_INVAL;
+ goto l_end;
+ }
+ }
+
+ kv_info->kvlist = kvlist;
+ ret = SXE2_SUCCESS;
+ PMD_LOG_DEBUG(COM, "kvargs %d preprocessing success.",
+ kv_info->kvlist->count);
+l_end:
+ return ret;
+}
+
+static void sxe2_kvargs_free(struct sxe2_dev_kvargs_info *kv_info)
+{
+ if ((kv_info != NULL) && (kv_info->kvlist != NULL)) {
+ rte_kvargs_free(kv_info->kvlist);
+ kv_info->kvlist = NULL;
+ }
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_kvargs_process)
+s32
+sxe2_kvargs_process(struct sxe2_dev_kvargs_info *kv_info,
+ const s8 *const key_match, arg_handler_t handler, void *opaque_arg)
+{
+ const struct rte_kvargs_pair *pair;
+ struct rte_kvargs *kvlist;
+ u32 i;
+ s32 ret = SXE2_SUCCESS;
+
+ if ((kv_info == NULL) || (kv_info->kvlist == NULL) ||
+ (key_match == NULL)) {
+ PMD_LOG_ERR(COM, "Failed to process kvargs, NULL parameter.");
+ ret = SXE2_ERR_INVAL;
+ goto l_end;
+ }
+ kvlist = kv_info->kvlist;
+
+ for (i = 0; i < kvlist->count; i++) {
+ pair = &kvlist->pairs[i];
+ if (strcmp(pair->key, key_match) == 0) {
+ ret = (*handler)(pair->key, pair->value, opaque_arg);
+ if (ret)
+ goto l_end;
+
+ kv_info->is_used[i] = true;
+ break;
+ }
+ }
+
+l_end:
+ return ret;
+}
+
+static s32 sxe2_parse_class_type(const s8 *key, const s8 *value, void *args)
+{
+ u32 *class_type = (u32 *)args;
+ s32 ret = SXE2_SUCCESS;
+
+ *class_type = sxe2_class_name_to_value(value);
+ if (*class_type == SXE2_CLASS_TYPE_INVALID) {
+ ret = SXE2_ERR_INVAL;
+ PMD_LOG_ERR(COM, "Unsupported %s type: %s", key, value);
+ }
+
+ return ret;
+}
+
+static s32 sxe2_common_device_setup(struct sxe2_common_device *cdev)
+{
+ struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(cdev->dev);
+ s32 ret = SXE2_SUCCESS;
+
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ goto l_end;
+
+ ret = sxe2_drv_dev_open(cdev, pci_dev);
+ if (ret != SXE2_SUCCESS) {
+ PMD_LOG_ERR(COM, "Open pmd chrdev failed, ret=%d", ret);
+ goto l_end;
+ }
+
+ ret = sxe2_drv_dev_handshark(cdev);
+ if (ret != SXE2_SUCCESS) {
+ PMD_LOG_ERR(COM, "Handshark failed, ret=%d", ret);
+ goto l_close_dev;
+ }
+
+ goto l_end;
+
+l_close_dev:
+ sxe2_drv_dev_close(cdev);
+l_end:
+ return ret;
+}
+
+static void sxe2_common_device_cleanup(struct sxe2_common_device *cdev)
+{
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ return;
+
+ if (TAILQ_EMPTY(&sxe2_common_devices_list))
+ (void)rte_mem_event_callback_unregister("SXE2_MEM_ENVENT_CB", NULL);
+
+ sxe2_drv_dev_close(cdev);
+}
+
+static struct sxe2_common_device *sxe2_common_device_alloc(
+ struct rte_device *rte_dev, u32 class_type)
+{
+ struct sxe2_common_device *cdev = NULL;
+
+ cdev = rte_zmalloc("sxe2_common_device", sizeof(*cdev), 0);
+ if (cdev == NULL) {
+ PMD_LOG_ERR(COM, "Fail to alloc sxe2 common device.");
+ goto l_end;
+ }
+ cdev->dev = rte_dev;
+ cdev->class_type = class_type;
+ cdev->config.kernel_reset = false;
+ rte_ticketlock_init(&cdev->config.lock);
+
+ (void)pthread_mutex_lock(&sxe2_common_devices_list_lock);
+ TAILQ_INSERT_TAIL(&sxe2_common_devices_list, cdev, next);
+ (void)pthread_mutex_unlock(&sxe2_common_devices_list_lock);
+
+l_end:
+ return cdev;
+}
+
+static void sxe2_common_device_free(struct sxe2_common_device *cdev)
+{
+
+ (void)pthread_mutex_lock(&sxe2_common_devices_list_lock);
+ TAILQ_REMOVE(&sxe2_common_devices_list, cdev, next);
+ (void)pthread_mutex_unlock(&sxe2_common_devices_list_lock);
+
+ rte_free(cdev);
+}
+
+static bool sxe2_dev_is_pci(const struct rte_device *dev)
+{
+ return strcmp(dev->bus->name, "pci") == 0;
+}
+
+static bool sxe2_dev_pci_id_match(const struct sxe2_class_driver *cdrv,
+ const struct rte_device *dev)
+{
+ const struct rte_pci_device *pci_dev;
+ const struct rte_pci_id *id_table;
+ bool ret = false;
+
+ if (!sxe2_dev_is_pci(dev)) {
+ PMD_LOG_ERR(COM, "Device %s is not a PCI device", dev->name);
+ goto l_end;
+ }
+
+ pci_dev = RTE_DEV_TO_PCI_CONST(dev);
+ for (id_table = cdrv->id_table; id_table->vendor_id != 0;
+ id_table++) {
+
+ if (id_table->vendor_id != pci_dev->id.vendor_id &&
+ id_table->vendor_id != RTE_PCI_ANY_ID) {
+ continue;
+ }
+ if (id_table->device_id != pci_dev->id.device_id &&
+ id_table->device_id != RTE_PCI_ANY_ID) {
+ continue;
+ }
+ if (id_table->subsystem_vendor_id !=
+ pci_dev->id.subsystem_vendor_id &&
+ id_table->subsystem_vendor_id != RTE_PCI_ANY_ID) {
+ continue;
+ }
+ if (id_table->subsystem_device_id !=
+ pci_dev->id.subsystem_device_id &&
+ id_table->subsystem_device_id != RTE_PCI_ANY_ID) {
+
+ continue;
+ }
+ if (id_table->class_id != pci_dev->id.class_id &&
+ id_table->class_id != RTE_CLASS_ANY_ID) {
+ continue;
+ }
+ ret = true;
+ break;
+ }
+
+l_end:
+ return ret;
+}
+
+static s32 sxe2_classes_driver_probe(struct sxe2_common_device *cdev,
+ struct sxe2_dev_kvargs_info *kv_info, u32 class_type)
+{
+ struct sxe2_class_driver *cdrv = NULL;
+ s32 ret = SXE2_ERROR;
+
+ cdrv = sxe2_class_driver_get(class_type);
+ if (cdrv == NULL) {
+ PMD_LOG_ERR(COM, "Fail to get class type[%u] driver.", class_type);
+ goto l_end;
+ }
+
+ if (!sxe2_dev_pci_id_match(cdrv, cdev->dev)) {
+ PMD_LOG_ERR(COM, "Fail to match pci id for driver:%s.", cdrv->name);
+ goto l_end;
+ }
+
+ ret = cdrv->probe(cdev, kv_info);
+ if (ret) {
+
+ PMD_LOG_DEBUG(COM, "Fail to probe driver:%s.", cdrv->name);
+ goto l_end;
+ }
+
+ cdev->cdrv = cdrv;
+l_end:
+ return ret;
+}
+
+static s32 sxe2_classes_driver_remove(struct sxe2_common_device *cdev)
+{
+ struct sxe2_class_driver *cdrv = cdev->cdrv;
+
+ return cdrv->remove(cdev);
+}
+
+static s32 sxe2_kvargs_validate(struct sxe2_dev_kvargs_info *kv_info)
+{
+ s32 ret = SXE2_SUCCESS;
+ u32 i;
+
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ goto l_end;
+
+ if (kv_info == NULL)
+ goto l_end;
+
+ for (i = 0; i < kv_info->kvlist->count; i++) {
+ if (kv_info->is_used[i] == 0) {
+ PMD_LOG_ERR(COM, "Key \"%s\" is unsupported for the class driver.",
+ kv_info->kvlist->pairs[i].key);
+ ret = SXE2_ERR_INVAL;
+ goto l_end;
+ }
+ }
+
+l_end:
+ return ret;
+}
+
+static s32 sxe2_common_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+ struct rte_pci_device *pci_dev)
+{
+ struct rte_device *rte_dev = &pci_dev->device;
+ struct sxe2_common_device *cdev;
+ struct sxe2_dev_kvargs_info *kv_info_p = NULL;
+
+ u32 class_type = SXE2_CLASS_TYPE_ETH;
+ s32 ret = SXE2_ERROR;
+
+ PMD_LOG_INFO(COM, "Probe pci device: %s", pci_dev->name);
+
+ cdev = sxe2_rtedev_to_cdev(rte_dev);
+ if (cdev != NULL) {
+ PMD_LOG_ERR(COM, "Device %s already probed.", rte_dev->name);
+ ret = SXE2_ERR_BUSY;
+ goto l_end;
+ }
+
+ if ((rte_dev->devargs != NULL) && (rte_dev->devargs->args != NULL)) {
+ kv_info_p = calloc(1, sizeof(struct sxe2_dev_kvargs_info));
+ if (!kv_info_p) {
+ PMD_LOG_ERR(COM, "Failed to allocate memory for kv_info");
+ goto l_end;
+ }
+
+ ret = sxe2_kvargs_preprocessing(kv_info_p, rte_dev->devargs);
+ if (ret < 0) {
+ PMD_LOG_ERR(COM, "Unsupported device args: %s",
+ rte_dev->devargs->args);
+ goto l_free_kvargs;
+ }
+
+ ret = sxe2_kvargs_process(kv_info_p, SXE2_DEVARGS_KEY_CLASS,
+ sxe2_parse_class_type, &class_type);
+ if (ret < 0) {
+ PMD_LOG_ERR(COM, "Unsupported sxe2 driver class: %s",
+ rte_dev->devargs->args);
+ goto l_free_args;
+ }
+
+ }
+
+ cdev = sxe2_common_device_alloc(rte_dev, class_type);
+ if (cdev == NULL) {
+ ret = SXE2_ERR_NOMEM;
+ goto l_free_args;
+ }
+
+ ret = sxe2_common_device_setup(cdev);
+ if (ret != SXE2_SUCCESS)
+ goto l_err_setup;
+
+ ret = sxe2_classes_driver_probe(cdev, kv_info_p, class_type);
+ if (ret != SXE2_SUCCESS)
+ goto l_err_probe;
+
+ ret = sxe2_kvargs_validate(kv_info_p);
+ if (ret != SXE2_SUCCESS) {
+ PMD_LOG_ERR(COM, "Device args validate failed: %s",
+ rte_dev->devargs->args);
+ goto l_err_valid;
+ }
+ cdev->kvargs = kv_info_p;
+
+ goto l_end;
+l_err_valid:
+ (void)sxe2_classes_driver_remove(cdev);
+l_err_probe:
+ sxe2_common_device_cleanup(cdev);
+l_err_setup:
+ sxe2_common_device_free(cdev);
+l_free_args:
+ sxe2_kvargs_free(kv_info_p);
+l_free_kvargs:
+ free(kv_info_p);
+l_end:
+ return ret;
+}
+
+static s32 sxe2_common_pci_remove(struct rte_pci_device *pci_dev)
+{
+ struct sxe2_common_device *cdev;
+ s32 ret = SXE2_ERROR;
+
+ PMD_LOG_INFO(COM, "Remove pci device: %s", pci_dev->name);
+ cdev = sxe2_rtedev_to_cdev(&pci_dev->device);
+ if (cdev == NULL) {
+ ret = SXE2_ERR_NODEV;
+ PMD_LOG_ERR(COM, "Fail to get remove device.");
+ goto l_end;
+ }
+
+ ret = sxe2_classes_driver_remove(cdev);
+ if (ret != SXE2_SUCCESS) {
+ PMD_LOG_ERR(COM, "Fail to remove device: %s", pci_dev->name);
+ goto l_end;
+ }
+
+ sxe2_common_device_cleanup(cdev);
+
+ if (cdev->kvargs != NULL) {
+ sxe2_kvargs_free(cdev->kvargs);
+ free(cdev->kvargs);
+ cdev->kvargs = NULL;
+ }
+
+ sxe2_common_device_free(cdev);
+
+l_end:
+ return ret;
+}
+
+static struct rte_pci_driver sxe2_common_pci_driver = {
+ .driver = {
+ .name = SXE2_COMMON_PCI_DRIVER_NAME,
+ },
+ .probe = sxe2_common_pci_probe,
+ .remove = sxe2_common_pci_remove,
+};
+
+static u32 sxe2_common_pci_id_table_size_get(const struct rte_pci_id *id_table)
+{
+ u32 table_size = 0;
+
+ while (id_table->vendor_id != 0) {
+ table_size++;
+ id_table++;
+ }
+
+ return table_size;
+}
+
+static bool sxe2_common_pci_id_exists(const struct rte_pci_id *id,
+ const struct rte_pci_id *id_table, u32 next_idx)
+{
+ s32 current_size = next_idx - 1;
+ s32 i;
+ bool exists = false;
+
+ for (i = 0; i < current_size; i++) {
+ if ((id->device_id == id_table[i].device_id) &&
+ (id->vendor_id == id_table[i].vendor_id) &&
+ (id->subsystem_vendor_id == id_table[i].subsystem_vendor_id) &&
+ (id->subsystem_device_id == id_table[i].subsystem_device_id)) {
+ exists = true;
+ break;
+ }
+ }
+
+ return exists;
+}
+
+static void sxe2_common_pci_id_insert(struct rte_pci_id *id_table,
+ u32 *next_idx, const struct rte_pci_id *insert_table)
+{
+ for (; insert_table->vendor_id != 0; insert_table++) {
+ if (!sxe2_common_pci_id_exists(insert_table, id_table, *next_idx)) {
+
+ id_table[*next_idx] = *insert_table;
+ (*next_idx)++;
+ }
+ }
+}
+
+static s32 sxe2_common_pci_id_table_update(const struct rte_pci_id *id_table)
+{
+ const struct rte_pci_id *id_iter;
+ struct rte_pci_id *updated_table;
+ struct rte_pci_id *old_table;
+ u32 num_ids = 0;
+ u32 i = 0;
+ s32 ret = SXE2_SUCCESS;
+
+ old_table = sxe2_common_pci_id_table;
+ if (old_table)
+ num_ids = sxe2_common_pci_id_table_size_get(old_table);
+
+ num_ids += sxe2_common_pci_id_table_size_get(id_table);
+
+ num_ids += 1;
+
+ updated_table = calloc(num_ids, sizeof(*updated_table));
+ if (!updated_table) {
+ PMD_LOG_ERR(COM, "Failed to allocate memory for PCI ID table");
+ goto l_end;
+ }
+
+ if (old_table == NULL) {
+
+ for (id_iter = id_table; id_iter->vendor_id != 0;
+ id_iter++, i++)
+ updated_table[i] = *id_iter;
+ } else {
+
+ for (id_iter = old_table; id_iter->vendor_id != 0;
+ id_iter++, i++)
+ updated_table[i] = *id_iter;
+
+ sxe2_common_pci_id_insert(updated_table, &i, id_table);
+ }
+
+ updated_table[i].vendor_id = 0;
+ sxe2_common_pci_driver.id_table = updated_table;
+ sxe2_common_pci_id_table = updated_table;
+ free(old_table);
+
+l_end:
+ return ret;
+}
+
+static void sxe2_common_driver_on_register_pci(struct sxe2_class_driver *driver)
+{
+ if (driver->id_table != NULL) {
+ if (sxe2_common_pci_id_table_update(driver->id_table) != 0)
+ return;
+ }
+
+ if (driver->intr_lsc)
+ sxe2_common_pci_driver.drv_flags |= RTE_PCI_DRV_INTR_LSC;
+ if (driver->intr_rmv)
+ sxe2_common_pci_driver.drv_flags |= RTE_PCI_DRV_INTR_RMV;
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_class_driver_register)
+void
+sxe2_class_driver_register(struct sxe2_class_driver *driver)
+{
+ sxe2_common_driver_on_register_pci(driver);
+ TAILQ_INSERT_TAIL(&sxe2_class_drivers_list, driver, next);
+}
+
+static void sxe2_common_pci_init(void)
+{
+ const struct rte_pci_id empty_table[] = {
+ {
+ .vendor_id = 0
+ },
+ };
+ s32 ret = SXE2_ERROR;
+
+ if (sxe2_common_pci_id_table == NULL) {
+ ret = sxe2_common_pci_id_table_update(empty_table);
+ if (ret != SXE2_SUCCESS)
+ goto l_end;
+ }
+ rte_pci_register(&sxe2_common_pci_driver);
+
+l_end:
+ return;
+}
+
+static bool sxe2_commoin_inited;
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_common_init)
+void
+sxe2_common_init(void)
+{
+ if (sxe2_commoin_inited)
+ goto l_end;
+
+ pthread_mutex_init(&sxe2_common_devices_list_lock, NULL);
+#ifdef SXE2_DPDK_DEBUG
+ sxe2_common_log_stream_init();
+#endif
+ sxe2_common_pci_init();
+ sxe2_commoin_inited = true;
+
+l_end:
+ return;
+}
+
+RTE_FINI(sxe2_common_pci_finish)
+{
+ if (sxe2_common_pci_id_table != NULL) {
+ rte_pci_unregister(&sxe2_common_pci_driver);
+ free(sxe2_common_pci_id_table);
+ }
+}
+
+RTE_PMD_EXPORT_NAME(sxe2_common_pci);
diff --git a/drivers/common/sxe2/sxe2_common.h b/drivers/common/sxe2/sxe2_common.h
new file mode 100644
index 0000000000..f62e00e053
--- /dev/null
+++ b/drivers/common/sxe2/sxe2_common.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2025, Wuxi Stars Micro System Technologies Co., Ltd.
+ */
+
+#ifndef __SXE2_COMMON_H__
+#define __SXE2_COMMON_H__
+
+#include <rte_bitops.h>
+#include <rte_kvargs.h>
+#include <rte_compat.h>
+#include <rte_memory.h>
+#include <rte_ticketlock.h>
+
+#include "sxe2_type.h"
+
+#define SXE2_COMMON_PCI_DRIVER_NAME "sxe2_pci"
+
+#define SXE2_CDEV_TO_CMD_FD(cdev) \
+ ((cdev)->config.cmd_fd)
+
+#define SXE2_DEVARGS_KEY_CLASS "class"
+
+struct sxe2_class_driver;
+
+enum sxe2_class_type {
+ SXE2_CLASS_TYPE_ETH = 0,
+ SXE2_CLASS_TYPE_VDPA,
+ SXE2_CLASS_TYPE_INVALID,
+};
+
+struct sxe2_common_dev_config {
+ s32 cmd_fd;
+ bool support_iommu;
+ bool kernel_reset;
+ rte_ticketlock_t lock;
+};
+
+struct sxe2_common_device {
+ struct rte_device *dev;
+ TAILQ_ENTRY(sxe2_common_device) next;
+ struct sxe2_class_driver *cdrv;
+ enum sxe2_class_type class_type;
+ struct sxe2_common_dev_config config;
+ struct sxe2_dev_kvargs_info *kvargs;
+};
+
+struct sxe2_dev_kvargs_info {
+ struct rte_kvargs *kvlist;
+ bool is_used[RTE_KVARGS_MAX];
+};
+
+typedef s32 (sxe2_class_driver_probe_t)(struct sxe2_common_device *scdev,
+ struct sxe2_dev_kvargs_info *kvargs);
+
+typedef s32 (sxe2_class_driver_remove_t)(struct sxe2_common_device *scdev);
+
+struct sxe2_class_driver {
+ TAILQ_ENTRY(sxe2_class_driver) next;
+ enum sxe2_class_type drv_class;
+ const s8 *name;
+ sxe2_class_driver_probe_t *probe;
+ sxe2_class_driver_remove_t *remove;
+ const struct rte_pci_id *id_table;
+ u32 intr_lsc;
+ u32 intr_rmv;
+};
+
+__rte_internal
+void
+sxe2_common_mem_event_cb(enum rte_mem_event type,
+ const void *addr, size_t size, void *arg __rte_unused);
+
+__rte_internal
+void
+sxe2_class_driver_register(struct sxe2_class_driver *driver);
+
+__rte_internal
+void
+sxe2_common_init(void);
+
+__rte_internal
+s32
+sxe2_kvargs_process(struct sxe2_dev_kvargs_info *kv_info,
+ const s8 *const key_match, arg_handler_t handler, void *opaque_arg);
+
+#endif
diff --git a/drivers/common/sxe2/sxe2_ioctl_chnl.c b/drivers/common/sxe2/sxe2_ioctl_chnl.c
new file mode 100644
index 0000000000..db09dd3126
--- /dev/null
+++ b/drivers/common/sxe2/sxe2_ioctl_chnl.c
@@ -0,0 +1,161 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2025, Wuxi Stars Micro System Technologies Co., Ltd.
+ */
+
+ #include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <rte_version.h>
+#include <eal_export.h>
+
+#include "sxe2_osal.h"
+#include "sxe2_errno.h"
+#include "sxe2_common_log.h"
+#include "sxe2_ioctl_chnl.h"
+#include "sxe2_ioctl_chnl_func.h"
+
+#define SXE2_CHR_DEV_NAME "/dev/sxe2-dpdk-"
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_cmd_close)
+void
+sxe2_drv_cmd_close(struct sxe2_common_device *cdev)
+{
+ cdev->config.kernel_reset = true;
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_cmd_exec)
+s32
+sxe2_drv_cmd_exec(struct sxe2_common_device *cdev,
+ struct sxe2_drv_cmd_params *cmd_params)
+{
+ s32 cmd_fd;
+ s32 ret = SXE2_ERR_IO;
+
+ if (cdev->config.kernel_reset) {
+ ret = SXE2_ERR_PERM;
+ PMD_LOG_WARN(COM, "kernel reseted, need restart app.");
+ goto l_end;
+ }
+
+ cmd_fd = SXE2_CDEV_TO_CMD_FD(cdev);
+ if (cmd_fd < 0) {
+ ret = SXE2_ERR_BADF;
+ PMD_LOG_ERR(COM, "Fail to exec cmd, fd[%d] error", cmd_fd);
+ goto l_end;
+ }
+
+ PMD_LOG_DEBUG(COM, "Exec drv cmd fd[%d] trace_id[0x%"PRIx64"]"
+ "opcode[0x%x] req_len[%d] resp_len[%d]",
+ cmd_fd, cmd_params->trace_id, cmd_params->opcode,
+ cmd_params->req_len, cmd_params->resp_len);
+
+ rte_ticketlock_lock(&cdev->config.lock);
+ ret = ioctl(cmd_fd, SXE2_COM_CMD_PASSTHROUGH, cmd_params);
+ if (ret < 0) {
+ PMD_LOG_ERR(COM, "Fail to exec cmd, fd[%d] opcode[0x%x] ret[%d], err:%s",
+ cmd_fd, cmd_params->opcode, ret, strerror(errno));
+ ret = -errno;
+ rte_ticketlock_unlock(&cdev->config.lock);
+ goto l_end;
+ }
+ rte_ticketlock_unlock(&cdev->config.lock);
+
+l_end:
+ return ret;
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_dev_open)
+s32
+sxe2_drv_dev_open(struct sxe2_common_device *cdev, struct rte_pci_device *pci_dev)
+{
+ s32 ret = SXE2_SUCCESS;
+ s32 fd = 0;
+ s8 drv_name[32] = {0};
+
+ snprintf(drv_name, sizeof(drv_name),
+ "%s%04"PRIx32":%02"PRIx8":%02"PRIx8".%"PRIx8,
+ SXE2_CHR_DEV_NAME,
+ pci_dev->addr.domain,
+ pci_dev->addr.bus,
+ pci_dev->addr.devid,
+ pci_dev->addr.function);
+
+ fd = open(drv_name, O_RDWR);
+ if (fd < 0) {
+ ret = SXE2_ERR_BADF;
+ PMD_LOG_ERR(COM, "Fail to open device:%s, ret=%d, err:%s",
+ drv_name, ret, strerror(errno));
+ goto l_end;
+ }
+
+ SXE2_CDEV_TO_CMD_FD(cdev) = fd;
+
+ PMD_LOG_INFO(COM, "Successfully opened device:%s, fd=%d",
+ drv_name, SXE2_CDEV_TO_CMD_FD(cdev));
+
+l_end:
+ return ret;
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_dev_close)
+void
+sxe2_drv_dev_close(struct sxe2_common_device *cdev)
+{
+ s32 fd = SXE2_CDEV_TO_CMD_FD(cdev);
+
+ if (fd > 0)
+ close(fd);
+ PMD_LOG_INFO(COM, "closed device fd=%d", fd);
+ SXE2_CDEV_TO_CMD_FD(cdev) = -1;
+}
+
+RTE_EXPORT_INTERNAL_SYMBOL(sxe2_drv_dev_handshark)
+s32
+sxe2_drv_dev_handshark(struct sxe2_common_device *cdev)
+{
+ s32 ret = SXE2_SUCCESS;
+ s32 cmd_fd = 0;
+ struct sxe2_ioctl_cmd_common_hdr cmd_params;
+
+ if (cdev->config.kernel_reset) {
+ ret = SXE2_ERR_PERM;
+ PMD_LOG_WARN(COM, "kernel reseted, need restart app.");
+ goto l_end;
+ }
+
+ cmd_fd = SXE2_CDEV_TO_CMD_FD(cdev);
+ if (cmd_fd < 0) {
+ ret = SXE2_ERR_BADF;
+ PMD_LOG_ERR(COM, "Failed to exec cmd, fd=%d", cmd_fd);
+ goto l_end;
+ }
+
+ PMD_LOG_DEBUG(COM, "Open fd=%d to handshark with kernel", cmd_fd);
+
+ memset(&cmd_params, 0, sizeof(struct sxe2_ioctl_cmd_common_hdr));
+ cmd_params.dpdk_ver = SXE2_COM_VER;
+ cmd_params.msg_len = sizeof(struct sxe2_ioctl_cmd_common_hdr);
+
+ rte_ticketlock_lock(&cdev->config.lock);
+ ret = ioctl(cmd_fd, SXE2_COM_CMD_HANDSHAKE, &cmd_params);
+ if (ret < 0) {
+ PMD_LOG_ERR(COM, "Failed to handshark, fd=%d, ret=%d, err:%s",
+ cmd_fd, ret, strerror(errno));
+ ret = SXE2_ERR_IO;
+ rte_ticketlock_unlock(&cdev->config.lock);
+ goto l_end;
+ }
+ rte_ticketlock_unlock(&cdev->config.lock);
+
+ if (cmd_params.cap & BIT(SXE2_COM_CAP_IOMMU_MAP))
+ cdev->config.support_iommu = true;
+ else
+ cdev->config.support_iommu = false;
+
+l_end:
+ return ret;
+}
diff --git a/drivers/common/sxe2/sxe2_ioctl_chnl.h b/drivers/common/sxe2/sxe2_ioctl_chnl.h
new file mode 100644
index 0000000000..eedb3d6693
--- /dev/null
+++ b/drivers/common/sxe2/sxe2_ioctl_chnl.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2025, Wuxi Stars Micro System Technologies Co., Ltd.
+ */
+
+#ifndef __SXE2_IOCTL_CHNL_H__
+#define __SXE2_IOCTL_CHNL_H__
+
+#ifdef SXE2_DPDK_DRIVER
+
+#include <rte_version.h>
+#include <bus_pci_driver.h>
+#include "sxe2_type.h"
+#endif
+
+#ifdef SXE2_LINUX_DRIVER
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#endif
+#endif
+
+#include "sxe2_internal_ver.h"
+
+#define SXE2_COM_INVAL_U32 0xFFFFFFFF
+
+#define SXE2_COM_PCI_OFFSET_SHIFT 40
+
+#define SXE2_COM_PCI_INDEX_TO_OFFSET(index) ((u64)(index) << SXE2_COM_PCI_OFFSET_SHIFT)
+#define SXE2_COM_PCI_OFFSET_MASK (((u64)(1) << SXE2_COM_PCI_OFFSET_SHIFT) - 1)
+#define SXE2_COM_PCI_OFFSET_GEN(index, off) ((((u64)(index)) << SXE2_COM_PCI_OFFSET_SHIFT) | \
+ (((u64)(off)) & SXE2_COM_PCI_OFFSET_MASK))
+
+#define SXE2_DRV_TRACE_ID_COUNT_MASK 0x003FFFFFFFFFFFFFLLU
+
+#define SXE2_DRV_CMD_DFLT_TIMEOUT (30)
+
+#define SXE2_COM_VER_MAJOR 1
+#define SXE2_COM_VER_MINOR 0
+#define SXE2_COM_VER SXE2_MK_VER(SXE2_COM_VER_MAJOR, SXE2_COM_VER_MINOR)
+
+enum SXE2_COM_CMD {
+ SXE2_DEVICE_HANDSHAKE = 1,
+ SXE2_DEVICE_IO_IRQS_REQ,
+ SXE2_DEVICE_EVT_IRQ_REQ,
+ SXE2_DEVICE_RST_IRQ_REQ,
+ SXE2_DEVICE_EVT_CAUSE_GET,
+ SXE2_DEVICE_DMA_MAP,
+ SXE2_DEVICE_DMA_UNMAP,
+ SXE2_DEVICE_PASSTHROUGH,
+ SXE2_DEVICE_MAX,
+};
+
+#define SXE2_CMD_TYPE 'S'
+
+#define SXE2_COM_CMD_HANDSHAKE _IO(SXE2_CMD_TYPE, SXE2_DEVICE_HANDSHAKE)
+#define SXE2_COM_CMD_IO_IRQS_REQ _IO(SXE2_CMD_TYPE, SXE2_DEVICE_IO_IRQS_REQ)
+#define SXE2_COM_CMD_EVT_IRQ_REQ _IO(SXE2_CMD_TYPE, SXE2_DEVICE_EVT_IRQ_REQ)
+#define SXE2_COM_CMD_RST_IRQ_REQ _IO(SXE2_CMD_TYPE, SXE2_DEVICE_RST_IRQ_REQ)
+#define SXE2_COM_CMD_EVT_CAUSE_GET _IO(SXE2_CMD_TYPE, SXE2_DEVICE_EVT_CAUSE_GET)
+#define SXE2_COM_CMD_DMA_MAP _IO(SXE2_CMD_TYPE, SXE2_DEVICE_DMA_MAP)
+#define SXE2_COM_CMD_DMA_UNMAP _IO(SXE2_CMD_TYPE, SXE2_DEVICE_DMA_UNMAP)
+#define SXE2_COM_CMD_PASSTHROUGH _IO(SXE2_CMD_TYPE, SXE2_DEVICE_PASSTHROUGH)
+
+enum sxe2_com_cap {
+ SXE2_COM_CAP_IOMMU_MAP = 0,
+};
+
+struct sxe2_ioctl_cmd_common_hdr {
+ u32 dpdk_ver;
+ u32 drv_ver;
+ u32 msg_len;
+ u32 cap;
+ u8 reserved[32];
+};
+
+struct sxe2_drv_cmd_params {
+ u64 trace_id;
+ u32 timeout;
+ u32 opcode;
+ u16 vsi_id;
+ u16 repr_id;
+ u32 req_len;
+ u32 resp_len;
+ void *req_data;
+ void *resp_data;
+ u8 resv[32];
+};
+
+struct sxe2_ioctl_irq_set {
+ u32 cnt;
+ u8 resv[4];
+ u32 base_irq_in_com;
+ s32 *event_fd;
+};
+
+enum sxe2_com_event_cause {
+ SXE2_COM_EC_LINK_CHG = 0,
+ SXE2_COM_SW_MODE_LEGACY,
+ SXE2_COM_SW_MODE_SWITCHDEV,
+ SXE2_COM_FC_ST_CHANGE,
+
+ SXE2_COM_EC_RESET = 62,
+ SXE2_COM_EC_MAX = 63,
+};
+
+struct sxe2_ioctl_other_evt_set {
+ s32 eventfd;
+ u8 resv[4];
+ u64 filter_table;
+};
+
+struct sxe2_ioctl_other_evt_get {
+ u64 evt_cause;
+ u8 resv[8];
+};
+
+struct sxe2_ioctl_reset_sub_set {
+ s32 eventfd;
+ u8 resv[4];
+};
+
+struct sxe2_ioctl_iommu_dma_map {
+ u64 vaddr;
+ u64 iova;
+ u64 size;
+ u8 resv[4];
+};
+
+struct sxe2_ioctl_iommu_dma_unmap {
+ u64 iova;
+};
+
+union sxe2_drv_trace_info {
+ u64 id;
+ struct {
+ u64 count : 54;
+ u64 cpu_id : 10;
+ } sxe2_drv_trace_id_param;
+};
+
+#endif
diff --git a/drivers/common/sxe2/sxe2_ioctl_chnl_func.h b/drivers/common/sxe2/sxe2_ioctl_chnl_func.h
new file mode 100644
index 0000000000..0c3cb9caea
--- /dev/null
+++ b/drivers/common/sxe2/sxe2_ioctl_chnl_func.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C), 2025, Wuxi Stars Micro System Technologies Co., Ltd.
+ */
+
+#ifndef __SXE2_IOCTL_CHNL_FUNC_H__
+#define __SXE2_IOCTL_CHNL_FUNC_H__
+
+#include <rte_version.h>
+#include <bus_pci_driver.h>
+
+#include "sxe2_type.h"
+#include "sxe2_common.h"
+#include "sxe2_ioctl_chnl.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+__rte_internal
+void
+sxe2_drv_cmd_close(struct sxe2_common_device *cdev);
+
+__rte_internal
+s32
+sxe2_drv_cmd_exec(struct sxe2_common_device *cdev,
+ struct sxe2_drv_cmd_params *cmd_params);
+
+__rte_internal
+s32
+sxe2_drv_dev_open(struct sxe2_common_device *cdev,
+ struct rte_pci_device *pci_dev);
+
+__rte_internal
+void
+sxe2_drv_dev_close(struct sxe2_common_device *cdev);
+
+__rte_internal
+s32
+sxe2_drv_dev_handshark(struct sxe2_common_device *cdev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--
2.47.3
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