/* * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. * Copyright (c) 2005 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/init.h> #include <linux/errno.h> #include <asm/page.h> #include "mlx4.h" #include "icm.h" int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn) { struct mlx4_priv *priv = mlx4_priv(dev); *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap); if (*pdn == -1) return -ENOMEM; return 0; } EXPORT_SYMBOL_GPL(mlx4_pd_alloc); void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn) { mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn); } EXPORT_SYMBOL_GPL(mlx4_pd_free); int mlx4_init_pd_table(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds, (1 << 24) - 1, dev->caps.reserved_pds, 0); } void mlx4_cleanup_pd_table(struct mlx4_dev *dev) { mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap); } int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar) { uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap); if (uar->index == -1) return -ENOMEM; uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index; return 0; } EXPORT_SYMBOL_GPL(mlx4_uar_alloc); void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar) { mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index); } EXPORT_SYMBOL_GPL(mlx4_uar_free); int mlx4_init_uar_table(struct mlx4_dev *dev) { if (dev->caps.num_uars <= 128) { mlx4_err(dev, "Only %d UAR pages (need more than 128)\n", dev->caps.num_uars); mlx4_err(dev, "Increase firmware log2_uar_bar_megabytes?\n"); return -ENODEV; } return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap, dev->caps.num_uars, dev->caps.num_uars - 1, max(128, dev->caps.reserved_uars), 0); } void mlx4_cleanup_uar_table(struct mlx4_dev *dev) { mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap); }