Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. |
| 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/mlx5/driver.h> |
| 36 | #include <linux/mlx5/cmd.h> |
| 37 | #include "mlx5_core.h" |
| 38 | |
| 39 | struct mlx5_alloc_pd_mbox_in { |
| 40 | struct mlx5_inbox_hdr hdr; |
| 41 | u8 rsvd[8]; |
| 42 | }; |
| 43 | |
| 44 | struct mlx5_alloc_pd_mbox_out { |
| 45 | struct mlx5_outbox_hdr hdr; |
| 46 | __be32 pdn; |
| 47 | u8 rsvd[4]; |
| 48 | }; |
| 49 | |
| 50 | struct mlx5_dealloc_pd_mbox_in { |
| 51 | struct mlx5_inbox_hdr hdr; |
| 52 | __be32 pdn; |
| 53 | u8 rsvd[4]; |
| 54 | }; |
| 55 | |
| 56 | struct mlx5_dealloc_pd_mbox_out { |
| 57 | struct mlx5_outbox_hdr hdr; |
| 58 | u8 rsvd[8]; |
| 59 | }; |
| 60 | |
| 61 | int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn) |
| 62 | { |
| 63 | struct mlx5_alloc_pd_mbox_in in; |
| 64 | struct mlx5_alloc_pd_mbox_out out; |
| 65 | int err; |
| 66 | |
| 67 | memset(&in, 0, sizeof(in)); |
| 68 | memset(&out, 0, sizeof(out)); |
| 69 | in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_PD); |
| 70 | err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); |
| 71 | if (err) |
| 72 | return err; |
| 73 | |
| 74 | if (out.hdr.status) |
| 75 | return mlx5_cmd_status_to_err(&out.hdr); |
| 76 | |
| 77 | *pdn = be32_to_cpu(out.pdn) & 0xffffff; |
| 78 | return err; |
| 79 | } |
| 80 | EXPORT_SYMBOL(mlx5_core_alloc_pd); |
| 81 | |
| 82 | int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn) |
| 83 | { |
| 84 | struct mlx5_dealloc_pd_mbox_in in; |
| 85 | struct mlx5_dealloc_pd_mbox_out out; |
| 86 | int err; |
| 87 | |
| 88 | memset(&in, 0, sizeof(in)); |
| 89 | memset(&out, 0, sizeof(out)); |
| 90 | in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_PD); |
| 91 | in.pdn = cpu_to_be32(pdn); |
| 92 | err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); |
| 93 | if (err) |
| 94 | return err; |
| 95 | |
| 96 | if (out.hdr.status) |
| 97 | return mlx5_cmd_status_to_err(&out.hdr); |
| 98 | |
| 99 | return err; |
| 100 | } |
| 101 | EXPORT_SYMBOL(mlx5_core_dealloc_pd); |