2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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"
39 int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev,
40 struct mlx5_core_mkey *mkey,
41 struct mlx5_async_ctx *async_ctx, u32 *in,
42 int inlen, u32 *out, int outlen,
43 mlx5_async_cbk_t callback,
44 struct mlx5_async_work *context)
46 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0};
52 spin_lock_irq(&dev->priv.mkey_lock);
53 key = dev->priv.mkey_key++;
54 spin_unlock_irq(&dev->priv.mkey_lock);
55 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
57 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
58 MLX5_SET(mkc, mkc, mkey_7_0, key);
61 return mlx5_cmd_exec_cb(async_ctx, in, inlen, out, outlen,
64 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
68 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
69 mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
70 mkey->size = MLX5_GET64(mkc, mkc, len);
71 mkey->key = mlx5_idx_to_mkey(mkey_index) | key;
72 mkey->pd = MLX5_GET(mkc, mkc, pd);
74 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
75 mkey_index, key, mkey->key);
78 EXPORT_SYMBOL(mlx5_core_create_mkey_cb);
80 int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
81 struct mlx5_core_mkey *mkey,
84 return mlx5_core_create_mkey_cb(dev, mkey, NULL, in, inlen,
87 EXPORT_SYMBOL(mlx5_core_create_mkey);
89 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
90 struct mlx5_core_mkey *mkey)
92 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0};
93 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0};
95 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
96 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
97 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
99 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
101 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
102 u32 *out, int outlen)
104 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0};
106 memset(out, 0, outlen);
107 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
108 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
109 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
111 EXPORT_SYMBOL(mlx5_core_query_mkey);
113 static inline u32 mlx5_get_psv(u32 *out, int psv_index)
116 case 1: return MLX5_GET(create_psv_out, out, psv1_index);
117 case 2: return MLX5_GET(create_psv_out, out, psv2_index);
118 case 3: return MLX5_GET(create_psv_out, out, psv3_index);
119 default: return MLX5_GET(create_psv_out, out, psv0_index);
123 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
124 int npsvs, u32 *sig_index)
126 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0};
127 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0};
130 if (npsvs > MLX5_MAX_PSVS)
133 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
134 MLX5_SET(create_psv_in, in, pd, pdn);
135 MLX5_SET(create_psv_in, in, num_psv, npsvs);
137 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
141 for (i = 0; i < npsvs; i++)
142 sig_index[i] = mlx5_get_psv(out, i);
146 EXPORT_SYMBOL(mlx5_core_create_psv);
148 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
150 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0};
151 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0};
153 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
154 MLX5_SET(destroy_psv_in, in, psvn, psv_num);
155 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
157 EXPORT_SYMBOL(mlx5_core_destroy_psv);