2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
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6 * General Public License (GPL) Version 2, available from the file
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11 * without modification, are permitted provided that the following
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19 * copyright notice, this list of conditions and the following
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23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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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 void mlx5_init_mr_table(struct mlx5_core_dev *dev)
41 struct mlx5_mr_table *table = &dev->priv.mr_table;
43 rwlock_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(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
52 struct mlx5_create_mkey_mbox_in *in, int inlen,
53 mlx5_cmd_cbk_t callback, void *context,
54 struct mlx5_create_mkey_mbox_out *out)
56 struct mlx5_mr_table *table = &dev->priv.mr_table;
57 struct mlx5_create_mkey_mbox_out lout;
61 memset(&lout, 0, sizeof(lout));
62 spin_lock_irq(&dev->priv.mkey_lock);
63 key = dev->priv.mkey_key++;
64 spin_unlock_irq(&dev->priv.mkey_lock);
65 in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
66 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
68 err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
72 err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
76 mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
80 if (lout.hdr.status) {
81 mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
82 return mlx5_cmd_status_to_err(&lout.hdr);
85 mr->iova = be64_to_cpu(in->seg.start_addr);
86 mr->size = be64_to_cpu(in->seg.len);
87 mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
88 mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
90 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
91 be32_to_cpu(lout.mkey), key, mr->key);
93 /* connect to MR tree */
94 write_lock_irq(&table->lock);
95 err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
96 write_unlock_irq(&table->lock);
98 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
99 mlx5_base_mkey(mr->key), err);
100 mlx5_core_destroy_mkey(dev, mr);
105 EXPORT_SYMBOL(mlx5_core_create_mkey);
107 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
109 struct mlx5_mr_table *table = &dev->priv.mr_table;
110 struct mlx5_destroy_mkey_mbox_in in;
111 struct mlx5_destroy_mkey_mbox_out out;
112 struct mlx5_core_mr *deleted_mr;
116 memset(&in, 0, sizeof(in));
117 memset(&out, 0, sizeof(out));
119 write_lock_irqsave(&table->lock, flags);
120 deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
121 write_unlock_irqrestore(&table->lock, flags);
123 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n",
124 mlx5_base_mkey(mr->key));
128 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
129 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
130 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
135 return mlx5_cmd_status_to_err(&out.hdr);
139 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
141 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
142 struct mlx5_query_mkey_mbox_out *out, int outlen)
144 struct mlx5_query_mkey_mbox_in in;
147 memset(&in, 0, sizeof(in));
148 memset(out, 0, outlen);
150 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
151 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
152 err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
157 return mlx5_cmd_status_to_err(&out->hdr);
161 EXPORT_SYMBOL(mlx5_core_query_mkey);
163 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
166 struct mlx5_query_special_ctxs_mbox_in in;
167 struct mlx5_query_special_ctxs_mbox_out out;
170 memset(&in, 0, sizeof(in));
171 memset(&out, 0, sizeof(out));
173 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
174 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
179 return mlx5_cmd_status_to_err(&out.hdr);
181 *mkey = be32_to_cpu(out.dump_fill_mkey);
185 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
187 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
188 int npsvs, u32 *sig_index)
190 struct mlx5_allocate_psv_in in;
191 struct mlx5_allocate_psv_out out;
194 if (npsvs > MLX5_MAX_PSVS)
197 memset(&in, 0, sizeof(in));
198 memset(&out, 0, sizeof(out));
200 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV);
201 in.npsv_pd = cpu_to_be32((npsvs << 28) | pdn);
202 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
204 mlx5_core_err(dev, "cmd exec failed %d\n", err);
208 if (out.hdr.status) {
209 mlx5_core_err(dev, "create_psv bad status %d\n",
211 return mlx5_cmd_status_to_err(&out.hdr);
214 for (i = 0; i < npsvs; i++)
215 sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff;
219 EXPORT_SYMBOL(mlx5_core_create_psv);
221 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
223 struct mlx5_destroy_psv_in in;
224 struct mlx5_destroy_psv_out out;
227 memset(&in, 0, sizeof(in));
228 memset(&out, 0, sizeof(out));
230 in.psv_number = cpu_to_be32(psv_num);
231 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV);
232 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
234 mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err);
238 if (out.hdr.status) {
239 mlx5_core_err(dev, "destroy_psv bad status %d\n",
241 err = mlx5_cmd_status_to_err(&out.hdr);
248 EXPORT_SYMBOL(mlx5_core_destroy_psv);