--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2025 Broadcom.
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/auxiliary_bus.h>
+
+#include <rdma/ib_verbs.h>
+
+#include "bng_re.h"
+#include "bnge.h"
+#include "bnge_auxr.h"
+
+MODULE_AUTHOR("Siva Reddy Kallam <siva.kallam@broadcom.com>");
+MODULE_DESCRIPTION(BNG_RE_DESC);
+MODULE_LICENSE("Dual BSD/GPL");
+
+static struct bng_re_dev *bng_re_dev_add(struct auxiliary_device *adev,
+ struct bnge_auxr_dev *aux_dev)
+{
+ struct bng_re_dev *rdev;
+
+ /* Allocate bng_re_dev instance */
+ rdev = ib_alloc_device(bng_re_dev, ibdev);
+ if (!rdev) {
+ pr_err("%s: bng_re_dev allocation failure!", KBUILD_MODNAME);
+ return NULL;
+ }
+
+ /* Assign auxiliary device specific data */
+ rdev->netdev = aux_dev->net;
+ rdev->aux_dev = aux_dev;
+ rdev->adev = adev;
+ rdev->fn_id = rdev->aux_dev->pdev->devfn;
+
+ return rdev;
+}
+
+static int bng_re_add_device(struct auxiliary_device *adev)
+{
+ struct bnge_auxr_priv *auxr_priv =
+ container_of(adev, struct bnge_auxr_priv, aux_dev);
+ struct bng_re_en_dev_info *dev_info;
+ struct bng_re_dev *rdev;
+ int rc;
+
+ dev_info = auxiliary_get_drvdata(adev);
+
+ rdev = bng_re_dev_add(adev, auxr_priv->auxr_dev);
+ if (!rdev) {
+ rc = -ENOMEM;
+ goto exit;
+ }
+
+ dev_info->rdev = rdev;
+
+ return 0;
+exit:
+ return rc;
+}
+
+
+static void bng_re_remove_device(struct bng_re_dev *rdev,
+ struct auxiliary_device *aux_dev)
+{
+ ib_dealloc_device(&rdev->ibdev);
+}
+
+
+static int bng_re_probe(struct auxiliary_device *adev,
+ const struct auxiliary_device_id *id)
+{
+ struct bnge_auxr_priv *aux_priv =
+ container_of(adev, struct bnge_auxr_priv, aux_dev);
+ struct bng_re_en_dev_info *en_info;
+ int rc;
+
+ en_info = kzalloc(sizeof(*en_info), GFP_KERNEL);
+ if (!en_info)
+ return -ENOMEM;
+
+ en_info->auxr_dev = aux_priv->auxr_dev;
+
+ auxiliary_set_drvdata(adev, en_info);
+
+ rc = bng_re_add_device(adev);
+ if (rc)
+ kfree(en_info);
+ return rc;
+}
+
+static void bng_re_remove(struct auxiliary_device *adev)
+{
+ struct bng_re_en_dev_info *dev_info = auxiliary_get_drvdata(adev);
+ struct bng_re_dev *rdev;
+
+ rdev = dev_info->rdev;
+
+ if (rdev)
+ bng_re_remove_device(rdev, adev);
+ kfree(dev_info);
+}
+
+static const struct auxiliary_device_id bng_re_id_table[] = {
+ { .name = BNG_RE_ADEV_NAME ".rdma", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, bng_re_id_table);
+
+static struct auxiliary_driver bng_re_driver = {
+ .name = "rdma",
+ .probe = bng_re_probe,
+ .remove = bng_re_remove,
+ .id_table = bng_re_id_table,
+};
+
+static int __init bng_re_mod_init(void)
+{
+ int rc;
+
+
+ rc = auxiliary_driver_register(&bng_re_driver);
+ if (rc) {
+ pr_err("%s: Failed to register auxiliary driver\n",
+ KBUILD_MODNAME);
+ }
+ return rc;
+}
+
+static void __exit bng_re_mod_exit(void)
+{
+ auxiliary_driver_unregister(&bng_re_driver);
+}
+
+module_init(bng_re_mod_init);
+module_exit(bng_re_mod_exit);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+// Copyright (c) 2025 Broadcom.
+
+#ifndef __BNG_RE_H__
+#define __BNG_RE_H__
+
+#define BNG_RE_ADEV_NAME "bng_en"
+
+#define BNG_RE_DESC "Broadcom 800G RoCE Driver"
+
+#define rdev_to_dev(rdev) ((rdev) ? (&(rdev)->ibdev.dev) : NULL)
+
+struct bng_re_en_dev_info {
+ struct bng_re_dev *rdev;
+ struct bnge_auxr_dev *auxr_dev;
+};
+
+struct bng_re_dev {
+ struct ib_device ibdev;
+ struct net_device *netdev;
+ struct auxiliary_device *adev;
+ struct bnge_auxr_dev *aux_dev;
+ int fn_id;
+};
+
+#endif
projects / thirdparty / kernel / linux.git / commitdiff
