1/* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34#include <linux/init.h> 35#include <linux/errno.h> 36 37#include "mlx4.h" 38 39int mlx4_xrcd_alloc(struct mlx4_dev *dev, u32 *xrcdn) 40{ 41 struct mlx4_priv *priv = mlx4_priv(dev); 42 43 *xrcdn = mlx4_bitmap_alloc(&priv->xrcd_bitmap); 44 if (*xrcdn == -1) 45 return -ENOMEM; 46 47 return 0; 48} 49EXPORT_SYMBOL_GPL(mlx4_xrcd_alloc); 50 51void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn) 52{ 53 mlx4_bitmap_free(&mlx4_priv(dev)->xrcd_bitmap, xrcdn); 54} 55EXPORT_SYMBOL_GPL(mlx4_xrcd_free); 56 57int __devinit mlx4_init_xrcd_table(struct mlx4_dev *dev) 58{ 59 struct mlx4_priv *priv = mlx4_priv(dev); 60 61 return mlx4_bitmap_init(&priv->xrcd_bitmap, (1 << 16), 62 (1 << 16) - 1, dev->caps.reserved_xrcds + 1, 0); 63} 64 65void mlx4_cleanup_xrcd_table(struct mlx4_dev *dev) 66{ 67 mlx4_bitmap_cleanup(&mlx4_priv(dev)->xrcd_bitmap); 68} 69 70 71