linux/drivers/net/ethernet/mellanox/mlx5/core/alloc.c

/*
 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/bitmap.h>
#include <linux/dma-mapping.h>
#include <linux/vmalloc.h>
#include <linux/mlx5/driver.h>

#include "mlx5_core.h"

struct mlx5_db_pgdir { … };

/* Handling for queue buffers -- we allocate a bunch of memory and
 * register it in a memory region at HCA virtual address 0.
 */

static void *mlx5_dma_zalloc_coherent_node(struct mlx5_core_dev *dev,
					   size_t size, dma_addr_t *dma_handle,
					   int node)
{ … }

int mlx5_frag_buf_alloc_node(struct mlx5_core_dev *dev, int size,
			     struct mlx5_frag_buf *buf, int node)
{ … }
EXPORT_SYMBOL_GPL(…);

void mlx5_frag_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf)
{ … }
EXPORT_SYMBOL_GPL(…);

static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct mlx5_core_dev *dev,
						 int node)
{ … }

static int mlx5_alloc_db_from_pgdir(struct mlx5_db_pgdir *pgdir,
				    struct mlx5_db *db)
{ … }

int mlx5_db_alloc_node(struct mlx5_core_dev *dev, struct mlx5_db *db, int node)
{ … }
EXPORT_SYMBOL_GPL(…);

void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db)
{ … }
EXPORT_SYMBOL_GPL(…);

void mlx5_fill_page_frag_array_perm(struct mlx5_frag_buf *buf, __be64 *pas, u8 perm)
{ … }
EXPORT_SYMBOL_GPL(…);

void mlx5_fill_page_frag_array(struct mlx5_frag_buf *buf, __be64 *pas)
{ … }
EXPORT_SYMBOL_GPL(…);