1 /*-
2 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
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.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <dev/mlx5/driver.h>
31 #include "mlx5_core.h"
32
mlx5_init_mr_table(struct mlx5_core_dev * dev)33 void mlx5_init_mr_table(struct mlx5_core_dev *dev)
34 {
35 struct mlx5_mr_table *table = &dev->priv.mr_table;
36
37 rwlock_init(&table->lock);
38 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
39 }
40
mlx5_cleanup_mr_table(struct mlx5_core_dev * dev)41 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
42 {
43 }
44
mlx5_core_create_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mr * mr,struct mlx5_create_mkey_mbox_in * in,int inlen,mlx5_cmd_cbk_t callback,void * context,struct mlx5_create_mkey_mbox_out * out)45 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
46 struct mlx5_create_mkey_mbox_in *in, int inlen,
47 mlx5_cmd_cbk_t callback, void *context,
48 struct mlx5_create_mkey_mbox_out *out)
49 {
50 struct mlx5_mr_table *table = &dev->priv.mr_table;
51 struct mlx5_create_mkey_mbox_out lout;
52 int err;
53 u8 key;
54 unsigned long irql;
55
56 memset(&lout, 0, sizeof(lout));
57 spin_lock_irq(&dev->priv.mkey_lock);
58 key = dev->priv.mkey_key++;
59 spin_unlock_irq(&dev->priv.mkey_lock);
60 in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
61 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
62 if (callback) {
63 err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
64 callback, context);
65 return err;
66 } else {
67 err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
68 }
69
70 if (err) {
71 mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
72 return err;
73 }
74
75 if (lout.hdr.status) {
76 mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
77 return mlx5_cmd_status_to_err(&lout.hdr);
78 }
79
80 mr->iova = be64_to_cpu(in->seg.start_addr);
81 mr->size = be64_to_cpu(in->seg.len);
82 mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
83 mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
84
85 mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
86 be32_to_cpu(lout.mkey), key, mr->key);
87
88 /* connect to MR tree */
89 write_lock_irqsave(&table->lock, irql);
90 err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
91 write_unlock_irqrestore(&table->lock, irql);
92 if (err) {
93 mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
94 mlx5_base_mkey(mr->key), err);
95 mlx5_core_destroy_mkey(dev, mr);
96 }
97
98 return err;
99 }
100 EXPORT_SYMBOL(mlx5_core_create_mkey);
101
mlx5_core_destroy_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mr * mr)102 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
103 {
104 struct mlx5_mr_table *table = &dev->priv.mr_table;
105 u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)];
106 u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)];
107 struct mlx5_core_mr *deleted_mr;
108 unsigned long flags;
109
110 memset(in, 0, sizeof(in));
111
112 write_lock_irqsave(&table->lock, flags);
113 deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
114 write_unlock_irqrestore(&table->lock, flags);
115 if (!deleted_mr) {
116 mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n",
117 mlx5_base_mkey(mr->key));
118 return -ENOENT;
119 }
120
121 MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
122 MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mr->key));
123
124 memset(out, 0, sizeof(out));
125 return mlx5_cmd_exec_check_status(dev, in, sizeof(in),
126 out, sizeof(out));
127 }
128 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
129
mlx5_core_query_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mr * mr,struct mlx5_query_mkey_mbox_out * out,int outlen)130 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
131 struct mlx5_query_mkey_mbox_out *out, int outlen)
132 {
133 struct mlx5_query_mkey_mbox_in in;
134 int err;
135
136 memset(&in, 0, sizeof(in));
137 memset(out, 0, outlen);
138
139 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
140 in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
141 err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
142 if (err)
143 return err;
144
145 if (out->hdr.status)
146 return mlx5_cmd_status_to_err(&out->hdr);
147
148 return err;
149 }
150 EXPORT_SYMBOL(mlx5_core_query_mkey);
151
mlx5_core_dump_fill_mkey(struct mlx5_core_dev * dev,struct mlx5_core_mr * mr,u32 * mkey)152 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
153 u32 *mkey)
154 {
155 struct mlx5_query_special_ctxs_mbox_in in;
156 struct mlx5_query_special_ctxs_mbox_out out;
157 int err;
158
159 memset(&in, 0, sizeof(in));
160 memset(&out, 0, sizeof(out));
161
162 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
163 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
164 if (err)
165 return err;
166
167 if (out.hdr.status)
168 return mlx5_cmd_status_to_err(&out.hdr);
169
170 *mkey = be32_to_cpu(out.dump_fill_mkey);
171
172 return err;
173 }
174 EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
175
mlx5_core_create_psv(struct mlx5_core_dev * dev,u32 pdn,int npsvs,u32 * sig_index)176 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
177 int npsvs, u32 *sig_index)
178 {
179 struct mlx5_allocate_psv_in in;
180 struct mlx5_allocate_psv_out out;
181 int i, err;
182
183 if (npsvs > MLX5_MAX_PSVS)
184 return -EINVAL;
185
186 memset(&in, 0, sizeof(in));
187 memset(&out, 0, sizeof(out));
188
189 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV);
190 in.npsv_pd = cpu_to_be32((npsvs << 28) | pdn);
191 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
192 if (err) {
193 mlx5_core_err(dev, "cmd exec failed %d\n", err);
194 return err;
195 }
196
197 if (out.hdr.status) {
198 mlx5_core_err(dev, "create_psv bad status %d\n",
199 out.hdr.status);
200 return mlx5_cmd_status_to_err(&out.hdr);
201 }
202
203 for (i = 0; i < npsvs; i++)
204 sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff;
205
206 return err;
207 }
208 EXPORT_SYMBOL(mlx5_core_create_psv);
209
mlx5_core_destroy_psv(struct mlx5_core_dev * dev,int psv_num)210 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
211 {
212 struct mlx5_destroy_psv_in in;
213 struct mlx5_destroy_psv_out out;
214 int err;
215
216 memset(&in, 0, sizeof(in));
217 memset(&out, 0, sizeof(out));
218
219 in.psv_number = cpu_to_be32(psv_num);
220 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV);
221 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
222 if (err) {
223 mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err);
224 goto out;
225 }
226
227 if (out.hdr.status) {
228 mlx5_core_err(dev, "destroy_psv bad status %d\n",
229 out.hdr.status);
230 err = mlx5_cmd_status_to_err(&out.hdr);
231 goto out;
232 }
233
234 out:
235 return err;
236 }
237 EXPORT_SYMBOL(mlx5_core_destroy_psv);
238