1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies. 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); 102