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of: MSI: Simplify irqdomain lookup
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx5 / mad.c
blobb84d13a487cc04dcfbb501cfbd460c335bf91f8d
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/mlx5/cmd.h>
34 #include <rdma/ib_mad.h>
35 #include <rdma/ib_smi.h>
36 #include "mlx5_ib.h"
37
38 enum {
39 MLX5_IB_VENDOR_CLASS1 = 0x9,
40 MLX5_IB_VENDOR_CLASS2 = 0xa
41 };
42
43 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
44 u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
45 const void *in_mad, void *response_mad)
46 {
47 u8 op_modifier = 0;
48
49 /* Key check traps can't be generated unless we have in_wc to
50 * tell us where to send the trap.
51 */
52 if (ignore_mkey || !in_wc)
53 op_modifier |= 0x1;
54 if (ignore_bkey || !in_wc)
55 op_modifier |= 0x2;
56
57 return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port);
58 }
59
60 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
61 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
62 const struct ib_mad_hdr *in, size_t in_mad_size,
63 struct ib_mad_hdr *out, size_t *out_mad_size,
64 u16 *out_mad_pkey_index)
65 {
66 u16 slid;
67 int err;
68 const struct ib_mad *in_mad = (const struct ib_mad *)in;
69 struct ib_mad *out_mad = (struct ib_mad *)out;
70
71 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
72 *out_mad_size != sizeof(*out_mad)))
73 return IB_MAD_RESULT_FAILURE;
74
75 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
76
77 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
78 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
79
80 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
81 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
82 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
83 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
84 in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
85 return IB_MAD_RESULT_SUCCESS;
86
87 /* Don't process SMInfo queries -- the SMA can't handle them.
88 */
89 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
90 return IB_MAD_RESULT_SUCCESS;
91 } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
92 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 ||
93 in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 ||
94 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
95 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
96 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
97 return IB_MAD_RESULT_SUCCESS;
98 } else {
99 return IB_MAD_RESULT_SUCCESS;
100 }
101
102 err = mlx5_MAD_IFC(to_mdev(ibdev),
103 mad_flags & IB_MAD_IGNORE_MKEY,
104 mad_flags & IB_MAD_IGNORE_BKEY,
105 port_num, in_wc, in_grh, in_mad, out_mad);
106 if (err)
107 return IB_MAD_RESULT_FAILURE;
108
109 /* set return bit in status of directed route responses */
110 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
111 out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
112
113 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
114 /* no response for trap repress */
115 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
116
117 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
118 }
119
120 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
121 {
122 struct ib_smp *in_mad = NULL;
123 struct ib_smp *out_mad = NULL;
124 int err = -ENOMEM;
125 u16 packet_error;
126
127 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
128 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
129 if (!in_mad || !out_mad)
130 goto out;
131
132 init_query_mad(in_mad);
133 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
134 in_mad->attr_mod = cpu_to_be32(port);
135
136 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
137
138 packet_error = be16_to_cpu(out_mad->status);
139
140 dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
141 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
142
143 out:
144 kfree(in_mad);
145 kfree(out_mad);
146 return err;
147 }
148
149 int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
150 struct ib_smp *out_mad)
151 {
152 struct ib_smp *in_mad = NULL;
153 int err = -ENOMEM;
154
155 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
156 if (!in_mad)
157 return -ENOMEM;
158
159 init_query_mad(in_mad);
160 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
161
162 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
163 out_mad);
164
165 kfree(in_mad);
166 return err;
167 }
168
169 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
170 __be64 *sys_image_guid)
171 {
172 struct ib_smp *out_mad = NULL;
173 int err = -ENOMEM;
174
175 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
176 if (!out_mad)
177 return -ENOMEM;
178
179 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
180 if (err)
181 goto out;
182
183 memcpy(sys_image_guid, out_mad->data + 4, 8);
184
185 out:
186 kfree(out_mad);
187
188 return err;
189 }
190
191 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
192 u16 *max_pkeys)
193 {
194 struct ib_smp *out_mad = NULL;
195 int err = -ENOMEM;
196
197 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
198 if (!out_mad)
199 return -ENOMEM;
200
201 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
202 if (err)
203 goto out;
204
205 *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
206
207 out:
208 kfree(out_mad);
209
210 return err;
211 }
212
213 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
214 u32 *vendor_id)
215 {
216 struct ib_smp *out_mad = NULL;
217 int err = -ENOMEM;
218
219 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
220 if (!out_mad)
221 return -ENOMEM;
222
223 err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
224 if (err)
225 goto out;
226
227 *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
228
229 out:
230 kfree(out_mad);
231
232 return err;
233 }
234
235 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
236 {
237 struct ib_smp *in_mad = NULL;
238 struct ib_smp *out_mad = NULL;
239 int err = -ENOMEM;
240
241 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
242 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
243 if (!in_mad || !out_mad)
244 goto out;
245
246 init_query_mad(in_mad);
247 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
248
249 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
250 if (err)
251 goto out;
252
253 memcpy(node_desc, out_mad->data, 64);
254 out:
255 kfree(in_mad);
256 kfree(out_mad);
257 return err;
258 }
259
260 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
261 {
262 struct ib_smp *in_mad = NULL;
263 struct ib_smp *out_mad = NULL;
264 int err = -ENOMEM;
265
266 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
267 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
268 if (!in_mad || !out_mad)
269 goto out;
270
271 init_query_mad(in_mad);
272 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
273
274 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
275 if (err)
276 goto out;
277
278 memcpy(node_guid, out_mad->data + 12, 8);
279 out:
280 kfree(in_mad);
281 kfree(out_mad);
282 return err;
283 }
284
285 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
286 u16 *pkey)
287 {
288 struct ib_smp *in_mad = NULL;
289 struct ib_smp *out_mad = NULL;
290 int err = -ENOMEM;
291
292 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
293 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
294 if (!in_mad || !out_mad)
295 goto out;
296
297 init_query_mad(in_mad);
298 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
299 in_mad->attr_mod = cpu_to_be32(index / 32);
300
301 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
302 out_mad);
303 if (err)
304 goto out;
305
306 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
307
308 out:
309 kfree(in_mad);
310 kfree(out_mad);
311 return err;
312 }
313
314 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
315 union ib_gid *gid)
316 {
317 struct ib_smp *in_mad = NULL;
318 struct ib_smp *out_mad = NULL;
319 int err = -ENOMEM;
320
321 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
322 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
323 if (!in_mad || !out_mad)
324 goto out;
325
326 init_query_mad(in_mad);
327 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
328 in_mad->attr_mod = cpu_to_be32(port);
329
330 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
331 out_mad);
332 if (err)
333 goto out;
334
335 memcpy(gid->raw, out_mad->data + 8, 8);
336
337 init_query_mad(in_mad);
338 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
339 in_mad->attr_mod = cpu_to_be32(index / 8);
340
341 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
342 out_mad);
343 if (err)
344 goto out;
345
346 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
347
348 out:
349 kfree(in_mad);
350 kfree(out_mad);
351 return err;
352 }
353
354 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
355 struct ib_port_attr *props)
356 {
357 struct mlx5_ib_dev *dev = to_mdev(ibdev);
358 struct mlx5_core_dev *mdev = dev->mdev;
359 struct ib_smp *in_mad = NULL;
360 struct ib_smp *out_mad = NULL;
361 int ext_active_speed;
362 int err = -ENOMEM;
363
364 if (port < 1 || port > MLX5_CAP_GEN(mdev, num_ports)) {
365 mlx5_ib_warn(dev, "invalid port number %d\n", port);
366 return -EINVAL;
367 }
368
369 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
370 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
371 if (!in_mad || !out_mad)
372 goto out;
373
374 memset(props, 0, sizeof(*props));
375
376 init_query_mad(in_mad);
377 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
378 in_mad->attr_mod = cpu_to_be32(port);
379
380 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
381 if (err) {
382 mlx5_ib_warn(dev, "err %d\n", err);
383 goto out;
384 }
385
386 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
387 props->lmc = out_mad->data[34] & 0x7;
388 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
389 props->sm_sl = out_mad->data[36] & 0xf;
390 props->state = out_mad->data[32] & 0xf;
391 props->phys_state = out_mad->data[33] >> 4;
392 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
393 props->gid_tbl_len = out_mad->data[50];
394 props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
395 props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
396 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
397 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
398 props->active_width = out_mad->data[31] & 0xf;
399 props->active_speed = out_mad->data[35] >> 4;
400 props->max_mtu = out_mad->data[41] & 0xf;
401 props->active_mtu = out_mad->data[36] >> 4;
402 props->subnet_timeout = out_mad->data[51] & 0x1f;
403 props->max_vl_num = out_mad->data[37] >> 4;
404 props->init_type_reply = out_mad->data[41] >> 4;
405
406 /* Check if extended speeds (EDR/FDR/...) are supported */
407 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
408 ext_active_speed = out_mad->data[62] >> 4;
409
410 switch (ext_active_speed) {
411 case 1:
412 props->active_speed = 16; /* FDR */
413 break;
414 case 2:
415 props->active_speed = 32; /* EDR */
416 break;
417 }
418 }
419
420 /* If reported active speed is QDR, check if is FDR-10 */
421 if (props->active_speed == 4) {
422 if (mdev->port_caps[port - 1].ext_port_cap &
423 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
424 init_query_mad(in_mad);
425 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
426 in_mad->attr_mod = cpu_to_be32(port);
427
428 err = mlx5_MAD_IFC(dev, 1, 1, port,
429 NULL, NULL, in_mad, out_mad);
430 if (err)
431 goto out;
432
433 /* Checking LinkSpeedActive for FDR-10 */
434 if (out_mad->data[15] & 0x1)
435 props->active_speed = 8;
436 }
437 }
438
439 out:
440 kfree(in_mad);
441 kfree(out_mad);
442
443 return err;
444 }
Linux with added FPC-III support