Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 87 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
new file mode 100644
index 0000000000..20d72f1c0c
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */
+
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include "spectrum.h"
+
+struct mlxsw_sp_kvdl {
+	const struct mlxsw_sp_kvdl_ops *kvdl_ops;
+	struct mutex kvdl_lock; /* Protects kvdl allocations */
+	unsigned long priv[];
+	/* priv has to be always the last item */
+};
+
+int mlxsw_sp_kvdl_init(struct mlxsw_sp *mlxsw_sp)
+{
+	const struct mlxsw_sp_kvdl_ops *kvdl_ops = mlxsw_sp->kvdl_ops;
+	struct mlxsw_sp_kvdl *kvdl;
+	int err;
+
+	kvdl = kzalloc(sizeof(*mlxsw_sp->kvdl) + kvdl_ops->priv_size,
+		       GFP_KERNEL);
+	if (!kvdl)
+		return -ENOMEM;
+	mutex_init(&kvdl->kvdl_lock);
+	kvdl->kvdl_ops = kvdl_ops;
+	mlxsw_sp->kvdl = kvdl;
+
+	err = kvdl_ops->init(mlxsw_sp, kvdl->priv);
+	if (err)
+		goto err_init;
+	return 0;
+
+err_init:
+	mutex_destroy(&kvdl->kvdl_lock);
+	kfree(kvdl);
+	return err;
+}
+
+void mlxsw_sp_kvdl_fini(struct mlxsw_sp *mlxsw_sp)
+{
+	struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+
+	kvdl->kvdl_ops->fini(mlxsw_sp, kvdl->priv);
+	mutex_destroy(&kvdl->kvdl_lock);
+	kfree(kvdl);
+}
+
+int mlxsw_sp_kvdl_alloc(struct mlxsw_sp *mlxsw_sp,
+			enum mlxsw_sp_kvdl_entry_type type,
+			unsigned int entry_count, u32 *p_entry_index)
+{
+	struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+	int err;
+
+	mutex_lock(&kvdl->kvdl_lock);
+	err = kvdl->kvdl_ops->alloc(mlxsw_sp, kvdl->priv, type,
+				    entry_count, p_entry_index);
+	mutex_unlock(&kvdl->kvdl_lock);
+
+	return err;
+}
+
+void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp,
+			enum mlxsw_sp_kvdl_entry_type type,
+			unsigned int entry_count, int entry_index)
+{
+	struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+
+	mutex_lock(&kvdl->kvdl_lock);
+	kvdl->kvdl_ops->free(mlxsw_sp, kvdl->priv, type,
+			     entry_count, entry_index);
+	mutex_unlock(&kvdl->kvdl_lock);
+}
+
+int mlxsw_sp_kvdl_alloc_count_query(struct mlxsw_sp *mlxsw_sp,
+				    enum mlxsw_sp_kvdl_entry_type type,
+				    unsigned int entry_count,
+				    unsigned int *p_alloc_count)
+{
+	struct mlxsw_sp_kvdl *kvdl = mlxsw_sp->kvdl;
+
+	return kvdl->kvdl_ops->alloc_size_query(mlxsw_sp, kvdl->priv, type,
+						entry_count, p_alloc_count);
+}