diff options
Diffstat (limited to 'drivers/net/mlx4/pd.c')
| -rw-r--r-- | drivers/net/mlx4/pd.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/drivers/net/mlx4/pd.c b/drivers/net/mlx4/pd.c deleted file mode 100644 index 1286b886dce..00000000000 --- a/drivers/net/mlx4/pd.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * 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/errno.h> -#include <linux/io-mapping.h> - -#include <asm/page.h> - -#include "mlx4.h" -#include "icm.h" - -enum { - MLX4_NUM_RESERVED_UARS = 8 -}; - -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; - uar->map = NULL; - - 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_bf_alloc(struct mlx4_dev *dev, struct mlx4_bf *bf) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - struct mlx4_uar *uar; - int err = 0; - int idx; - - if (!priv->bf_mapping) - return -ENOMEM; - - mutex_lock(&priv->bf_mutex); - if (!list_empty(&priv->bf_list)) - uar = list_entry(priv->bf_list.next, struct mlx4_uar, bf_list); - else { - if (mlx4_bitmap_avail(&priv->uar_table.bitmap) < MLX4_NUM_RESERVED_UARS) { - err = -ENOMEM; - goto out; - } - uar = kmalloc(sizeof *uar, GFP_KERNEL); - if (!uar) { - err = -ENOMEM; - goto out; - } - err = mlx4_uar_alloc(dev, uar); - if (err) - goto free_kmalloc; - - uar->map = ioremap(uar->pfn << PAGE_SHIFT, PAGE_SIZE); - if (!uar->map) { - err = -ENOMEM; - goto free_uar; - } - - uar->bf_map = io_mapping_map_wc(priv->bf_mapping, uar->index << PAGE_SHIFT); - if (!uar->bf_map) { - err = -ENOMEM; - goto unamp_uar; - } - uar->free_bf_bmap = 0; - list_add(&uar->bf_list, &priv->bf_list); - } - - bf->uar = uar; - idx = ffz(uar->free_bf_bmap); - uar->free_bf_bmap |= 1 << idx; - bf->uar = uar; - bf->offset = 0; - bf->buf_size = dev->caps.bf_reg_size / 2; - bf->reg = uar->bf_map + idx * dev->caps.bf_reg_size; - if (uar->free_bf_bmap == (1 << dev->caps.bf_regs_per_page) - 1) - list_del_init(&uar->bf_list); - - goto out; - -unamp_uar: - bf->uar = NULL; - iounmap(uar->map); - -free_uar: - mlx4_uar_free(dev, uar); - -free_kmalloc: - kfree(uar); - -out: - mutex_unlock(&priv->bf_mutex); - return err; -} -EXPORT_SYMBOL_GPL(mlx4_bf_alloc); - -void mlx4_bf_free(struct mlx4_dev *dev, struct mlx4_bf *bf) -{ - struct mlx4_priv *priv = mlx4_priv(dev); - int idx; - - if (!bf->uar || !bf->uar->bf_map) - return; - - mutex_lock(&priv->bf_mutex); - idx = (bf->reg - bf->uar->bf_map) / dev->caps.bf_reg_size; - bf->uar->free_bf_bmap &= ~(1 << idx); - if (!bf->uar->free_bf_bmap) { - if (!list_empty(&bf->uar->bf_list)) - list_del(&bf->uar->bf_list); - - io_mapping_unmap(bf->uar->bf_map); - iounmap(bf->uar->map); - mlx4_uar_free(dev, bf->uar); - kfree(bf->uar); - } else if (list_empty(&bf->uar->bf_list)) - list_add(&bf->uar->bf_list, &priv->bf_list); - - mutex_unlock(&priv->bf_mutex); -} -EXPORT_SYMBOL_GPL(mlx4_bf_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); -} |