2 * Copyright (c) 2013-2018, Mellanox Technologies, Ltd. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
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16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <dev/mlx5/driver.h>
31 #include "mlx5_core.h"
33 static int mlx5_relaxed_ordering_write;
34 SYSCTL_INT(_hw_mlx5, OID_AUTO, relaxed_ordering_write, CTLFLAG_RWTUN,
35 &mlx5_relaxed_ordering_write, 0,
36 "Set to enable relaxed ordering for PCIe writes");
38 void mlx5_init_mr_table(struct mlx5_core_dev *dev)
40 struct mlx5_mr_table *table = &dev->priv.mr_table;
42 memset(table, 0, sizeof(*table));
43 spin_lock_init(&table->lock);
44 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
47 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
51 int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev,
52 struct mlx5_core_mr *mkey,
55 mlx5_cmd_cbk_t callback, void *context)
57 struct mlx5_mr_table *table = &dev->priv.mr_table;
58 u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0};
65 spin_lock_irq(&dev->priv.mkey_lock);
66 key = dev->priv.mkey_key++;
67 spin_unlock_irq(&dev->priv.mkey_lock);
68 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
69 MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
70 MLX5_SET(mkc, mkc, mkey_7_0, key);
72 if (mlx5_relaxed_ordering_write != 0) {
73 if (MLX5_CAP_GEN(dev, relaxed_ordering_write))
74 MLX5_SET(mkc, mkc, relaxed_ordering_write, 1);
76 return (-EPROTONOSUPPORT);
80 return mlx5_cmd_exec_cb(dev, in, inlen, out, outlen,
83 err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
85 mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
89 mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
90 mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
91 mkey->size = MLX5_GET64(mkc, mkc, len);
92 mkey->key = mlx5_idx_to_mkey(mkey_index) | key;
93 mkey->pd = MLX5_GET(mkc, mkc, pd);
95 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
96 mkey_index, key, mkey->key);
98 /* connect to MR tree */
99 spin_lock_irqsave(&table->lock, flags);
100 err = radix_tree_insert(&table->tree, mlx5_mkey_to_idx(mkey->key), mkey);
101 spin_unlock_irqrestore(&table->lock, flags);
103 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
105 mlx5_core_destroy_mkey(dev, mkey);
110 EXPORT_SYMBOL(mlx5_core_create_mkey_cb);
112 int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
113 struct mlx5_core_mr *mkey,
116 return mlx5_core_create_mkey_cb(dev, mkey, in, inlen,
117 NULL, 0, NULL, NULL);
119 EXPORT_SYMBOL(mlx5_core_create_mkey);
121 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mkey)
123 struct mlx5_mr_table *table = &dev->priv.mr_table;
124 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0};
125 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0};
126 struct mlx5_core_mr *deleted_mr;
129 spin_lock_irqsave(&table->lock, flags);
130 deleted_mr = radix_tree_delete(&table->tree, mlx5_mkey_to_idx(mkey->key));
131 spin_unlock_irqrestore(&table->lock, flags);
133 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", mkey->key);
137 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
138 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
140 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
142 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
144 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mkey,
145 u32 *out, int outlen)
147 u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0};
149 memset(out, 0, outlen);
150 MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
151 MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
153 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
155 EXPORT_SYMBOL(mlx5_core_query_mkey);
157 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *_mkey,
160 u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {0};
161 u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {0};
164 MLX5_SET(query_special_contexts_in, in, opcode,
165 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
166 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
168 *mkey = MLX5_GET(query_special_contexts_out, out, dump_fill_mkey);
172 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
174 static inline u32 mlx5_get_psv(u32 *out, int psv_index)
177 case 1: return MLX5_GET(create_psv_out, out, psv1_index);
178 case 2: return MLX5_GET(create_psv_out, out, psv2_index);
179 case 3: return MLX5_GET(create_psv_out, out, psv3_index);
180 default: return MLX5_GET(create_psv_out, out, psv0_index);
184 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
185 int npsvs, u32 *sig_index)
187 u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0};
188 u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0};
191 if (npsvs > MLX5_MAX_PSVS)
194 MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
195 MLX5_SET(create_psv_in, in, pd, pdn);
196 MLX5_SET(create_psv_in, in, num_psv, npsvs);
197 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
199 mlx5_core_err(dev, "create_psv cmd exec failed %d\n", err);
203 for (i = 0; i < npsvs; i++)
204 sig_index[i] = mlx5_get_psv(out, i);
208 EXPORT_SYMBOL(mlx5_core_create_psv);
210 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
212 u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0};
213 u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0};
215 MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
216 MLX5_SET(destroy_psv_in, in, psvn, psv_num);
217 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
219 EXPORT_SYMBOL(mlx5_core_destroy_psv);