1/* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2005 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/errno.h> 35 36#include <asm/page.h> 37 38#include "mlx4.h" 39#include "icm.h" 40 41int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn) 42{ 43 struct mlx4_priv *priv = mlx4_priv(dev); 44 45 *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap); 46 if (*pdn == -1) 47 return -ENOMEM; 48 49 return 0; 50} 51EXPORT_SYMBOL_GPL(mlx4_pd_alloc); 52 53void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn) 54{ 55 mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn); 56} 57EXPORT_SYMBOL_GPL(mlx4_pd_free); 58 59int mlx4_init_pd_table(struct mlx4_dev *dev) 60{ 61 struct mlx4_priv *priv = mlx4_priv(dev); 62 63 return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds, 64 (1 << 24) - 1, dev->caps.reserved_pds, 0); 65} 66 67void mlx4_cleanup_pd_table(struct mlx4_dev *dev) 68{ 69 mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap); 70} 71 72 73int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar) 74{ 75 uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap); 76 if (uar->index == -1) 77 return -ENOMEM; 78 79 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index; 80 81 return 0; 82} 83EXPORT_SYMBOL_GPL(mlx4_uar_alloc); 84 85void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar) 86{ 87 mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index); 88} 89EXPORT_SYMBOL_GPL(mlx4_uar_free); 90 91int mlx4_init_uar_table(struct mlx4_dev *dev) 92{ 93 if (dev->caps.num_uars <= 128) { 94 mlx4_err(dev, "Only %d UAR pages (need more than 128)\n", 95 dev->caps.num_uars); 96 mlx4_err(dev, "Increase firmware log2_uar_bar_megabytes?\n"); 97 return -ENODEV; 98 } 99 100 return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap, 101 dev->caps.num_uars, dev->caps.num_uars - 1, 102 max(128, dev->caps.reserved_uars), 0); 103} 104 105void mlx4_cleanup_uar_table(struct mlx4_dev *dev) 106{ 107 mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap); 108} 109