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/module.h>
34 #include <linux/mlx5/driver.h>
35 #include <linux/mlx5/cmd.h>
36 #include "mlx5_core.h"
37
mlx5_core_access_reg(struct mlx5_core_dev * dev,void * data_in,int size_in,void * data_out,int size_out,u16 reg_num,int arg,int write)38 int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
39 int size_in, void *data_out, int size_out,
40 u16 reg_num, int arg, int write)
41 {
42 struct mlx5_access_reg_mbox_in *in = NULL;
43 struct mlx5_access_reg_mbox_out *out = NULL;
44 int err = -ENOMEM;
45
46 in = mlx5_vzalloc(sizeof(*in) + size_in);
47 if (!in)
48 return -ENOMEM;
49
50 out = mlx5_vzalloc(sizeof(*out) + size_out);
51 if (!out)
52 goto ex1;
53
54 memcpy(in->data, data_in, size_in);
55 in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ACCESS_REG);
56 in->hdr.opmod = cpu_to_be16(!write);
57 in->arg = cpu_to_be32(arg);
58 in->register_id = cpu_to_be16(reg_num);
59 err = mlx5_cmd_exec(dev, in, sizeof(*in) + size_in, out,
60 sizeof(*out) + size_out);
61 if (err)
62 goto ex2;
63
64 if (out->hdr.status)
65 err = mlx5_cmd_status_to_err(&out->hdr);
66
67 if (!err)
68 memcpy(data_out, out->data, size_out);
69
70 ex2:
71 kvfree(out);
72 ex1:
73 kvfree(in);
74 return err;
75 }
76 EXPORT_SYMBOL_GPL(mlx5_core_access_reg);
77
78
79 struct mlx5_reg_pcap {
80 u8 rsvd0;
81 u8 port_num;
82 u8 rsvd1[2];
83 __be32 caps_127_96;
84 __be32 caps_95_64;
85 __be32 caps_63_32;
86 __be32 caps_31_0;
87 };
88
mlx5_set_port_caps(struct mlx5_core_dev * dev,u8 port_num,u32 caps)89 int mlx5_set_port_caps(struct mlx5_core_dev *dev, u8 port_num, u32 caps)
90 {
91 struct mlx5_reg_pcap in;
92 struct mlx5_reg_pcap out;
93
94 memset(&in, 0, sizeof(in));
95 in.caps_127_96 = cpu_to_be32(caps);
96 in.port_num = port_num;
97
98 return mlx5_core_access_reg(dev, &in, sizeof(in), &out,
99 sizeof(out), MLX5_REG_PCAP, 0, 1);
100 }
101 EXPORT_SYMBOL_GPL(mlx5_set_port_caps);
102
mlx5_query_port_ptys(struct mlx5_core_dev * dev,u32 * ptys,int ptys_size,int proto_mask,u8 local_port)103 int mlx5_query_port_ptys(struct mlx5_core_dev *dev, u32 *ptys,
104 int ptys_size, int proto_mask, u8 local_port)
105 {
106 u32 in[MLX5_ST_SZ_DW(ptys_reg)];
107
108 memset(in, 0, sizeof(in));
109 MLX5_SET(ptys_reg, in, local_port, local_port);
110 MLX5_SET(ptys_reg, in, proto_mask, proto_mask);
111
112 return mlx5_core_access_reg(dev, in, sizeof(in), ptys,
113 ptys_size, MLX5_REG_PTYS, 0, 0);
114 }
115 EXPORT_SYMBOL_GPL(mlx5_query_port_ptys);
116
mlx5_query_port_proto_cap(struct mlx5_core_dev * dev,u32 * proto_cap,int proto_mask)117 int mlx5_query_port_proto_cap(struct mlx5_core_dev *dev,
118 u32 *proto_cap, int proto_mask)
119 {
120 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
121 int err;
122
123 err = mlx5_query_port_ptys(dev, out, sizeof(out), proto_mask, 1);
124 if (err)
125 return err;
126
127 if (proto_mask == MLX5_PTYS_EN)
128 *proto_cap = MLX5_GET(ptys_reg, out, eth_proto_capability);
129 else
130 *proto_cap = MLX5_GET(ptys_reg, out, ib_proto_capability);
131
132 return 0;
133 }
134 EXPORT_SYMBOL_GPL(mlx5_query_port_proto_cap);
135
mlx5_query_port_proto_admin(struct mlx5_core_dev * dev,u32 * proto_admin,int proto_mask)136 int mlx5_query_port_proto_admin(struct mlx5_core_dev *dev,
137 u32 *proto_admin, int proto_mask)
138 {
139 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
140 int err;
141
142 err = mlx5_query_port_ptys(dev, out, sizeof(out), proto_mask, 1);
143 if (err)
144 return err;
145
146 if (proto_mask == MLX5_PTYS_EN)
147 *proto_admin = MLX5_GET(ptys_reg, out, eth_proto_admin);
148 else
149 *proto_admin = MLX5_GET(ptys_reg, out, ib_proto_admin);
150
151 return 0;
152 }
153 EXPORT_SYMBOL_GPL(mlx5_query_port_proto_admin);
154
mlx5_query_port_link_width_oper(struct mlx5_core_dev * dev,u8 * link_width_oper,u8 local_port)155 int mlx5_query_port_link_width_oper(struct mlx5_core_dev *dev,
156 u8 *link_width_oper, u8 local_port)
157 {
158 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
159 int err;
160
161 err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_IB, local_port);
162 if (err)
163 return err;
164
165 *link_width_oper = MLX5_GET(ptys_reg, out, ib_link_width_oper);
166
167 return 0;
168 }
169 EXPORT_SYMBOL_GPL(mlx5_query_port_link_width_oper);
170
mlx5_query_port_proto_oper(struct mlx5_core_dev * dev,u8 * proto_oper,int proto_mask,u8 local_port)171 int mlx5_query_port_proto_oper(struct mlx5_core_dev *dev,
172 u8 *proto_oper, int proto_mask,
173 u8 local_port)
174 {
175 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
176 int err;
177
178 err = mlx5_query_port_ptys(dev, out, sizeof(out), proto_mask, local_port);
179 if (err)
180 return err;
181
182 if (proto_mask == MLX5_PTYS_EN)
183 *proto_oper = MLX5_GET(ptys_reg, out, eth_proto_oper);
184 else
185 *proto_oper = MLX5_GET(ptys_reg, out, ib_proto_oper);
186
187 return 0;
188 }
189 EXPORT_SYMBOL_GPL(mlx5_query_port_proto_oper);
190
mlx5_set_port_proto(struct mlx5_core_dev * dev,u32 proto_admin,int proto_mask)191 int mlx5_set_port_proto(struct mlx5_core_dev *dev, u32 proto_admin,
192 int proto_mask)
193 {
194 u32 in[MLX5_ST_SZ_DW(ptys_reg)];
195 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
196
197 memset(in, 0, sizeof(in));
198
199 MLX5_SET(ptys_reg, in, local_port, 1);
200 MLX5_SET(ptys_reg, in, proto_mask, proto_mask);
201 if (proto_mask == MLX5_PTYS_EN)
202 MLX5_SET(ptys_reg, in, eth_proto_admin, proto_admin);
203 else
204 MLX5_SET(ptys_reg, in, ib_proto_admin, proto_admin);
205
206 return mlx5_core_access_reg(dev, in, sizeof(in), out,
207 sizeof(out), MLX5_REG_PTYS, 0, 1);
208 }
209 EXPORT_SYMBOL_GPL(mlx5_set_port_proto);
210
mlx5_set_port_admin_status(struct mlx5_core_dev * dev,enum mlx5_port_status status)211 int mlx5_set_port_admin_status(struct mlx5_core_dev *dev,
212 enum mlx5_port_status status)
213 {
214 u32 in[MLX5_ST_SZ_DW(paos_reg)];
215 u32 out[MLX5_ST_SZ_DW(paos_reg)];
216
217 memset(in, 0, sizeof(in));
218
219 MLX5_SET(paos_reg, in, local_port, 1);
220 MLX5_SET(paos_reg, in, admin_status, status);
221 MLX5_SET(paos_reg, in, ase, 1);
222
223 return mlx5_core_access_reg(dev, in, sizeof(in), out,
224 sizeof(out), MLX5_REG_PAOS, 0, 1);
225 }
226 EXPORT_SYMBOL_GPL(mlx5_set_port_admin_status);
227
mlx5_query_port_admin_status(struct mlx5_core_dev * dev,enum mlx5_port_status * status)228 int mlx5_query_port_admin_status(struct mlx5_core_dev *dev,
229 enum mlx5_port_status *status)
230 {
231 u32 in[MLX5_ST_SZ_DW(paos_reg)];
232 u32 out[MLX5_ST_SZ_DW(paos_reg)];
233 int err;
234
235 memset(in, 0, sizeof(in));
236
237 MLX5_SET(paos_reg, in, local_port, 1);
238
239 err = mlx5_core_access_reg(dev, in, sizeof(in), out,
240 sizeof(out), MLX5_REG_PAOS, 0, 0);
241 if (err)
242 return err;
243
244 *status = MLX5_GET(paos_reg, out, admin_status);
245 return 0;
246 }
247 EXPORT_SYMBOL_GPL(mlx5_query_port_admin_status);
248
mlx5_query_port_mtu(struct mlx5_core_dev * dev,u16 * admin_mtu,u16 * max_mtu,u16 * oper_mtu,u8 port)249 static void mlx5_query_port_mtu(struct mlx5_core_dev *dev, u16 *admin_mtu,
250 u16 *max_mtu, u16 *oper_mtu, u8 port)
251 {
252 u32 in[MLX5_ST_SZ_DW(pmtu_reg)];
253 u32 out[MLX5_ST_SZ_DW(pmtu_reg)];
254
255 memset(in, 0, sizeof(in));
256
257 MLX5_SET(pmtu_reg, in, local_port, port);
258
259 mlx5_core_access_reg(dev, in, sizeof(in), out,
260 sizeof(out), MLX5_REG_PMTU, 0, 0);
261
262 if (max_mtu)
263 *max_mtu = MLX5_GET(pmtu_reg, out, max_mtu);
264 if (oper_mtu)
265 *oper_mtu = MLX5_GET(pmtu_reg, out, oper_mtu);
266 if (admin_mtu)
267 *admin_mtu = MLX5_GET(pmtu_reg, out, admin_mtu);
268 }
269
mlx5_set_port_mtu(struct mlx5_core_dev * dev,u16 mtu,u8 port)270 int mlx5_set_port_mtu(struct mlx5_core_dev *dev, u16 mtu, u8 port)
271 {
272 u32 in[MLX5_ST_SZ_DW(pmtu_reg)];
273 u32 out[MLX5_ST_SZ_DW(pmtu_reg)];
274
275 memset(in, 0, sizeof(in));
276
277 MLX5_SET(pmtu_reg, in, admin_mtu, mtu);
278 MLX5_SET(pmtu_reg, in, local_port, port);
279
280 return mlx5_core_access_reg(dev, in, sizeof(in), out,
281 sizeof(out), MLX5_REG_PMTU, 0, 1);
282 }
283 EXPORT_SYMBOL_GPL(mlx5_set_port_mtu);
284
mlx5_query_port_max_mtu(struct mlx5_core_dev * dev,u16 * max_mtu,u8 port)285 void mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, u16 *max_mtu,
286 u8 port)
287 {
288 mlx5_query_port_mtu(dev, NULL, max_mtu, NULL, port);
289 }
290 EXPORT_SYMBOL_GPL(mlx5_query_port_max_mtu);
291
mlx5_query_port_oper_mtu(struct mlx5_core_dev * dev,u16 * oper_mtu,u8 port)292 void mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, u16 *oper_mtu,
293 u8 port)
294 {
295 mlx5_query_port_mtu(dev, NULL, NULL, oper_mtu, port);
296 }
297 EXPORT_SYMBOL_GPL(mlx5_query_port_oper_mtu);
298
mlx5_query_port_pvlc(struct mlx5_core_dev * dev,u32 * pvlc,int pvlc_size,u8 local_port)299 static int mlx5_query_port_pvlc(struct mlx5_core_dev *dev, u32 *pvlc,
300 int pvlc_size, u8 local_port)
301 {
302 u32 in[MLX5_ST_SZ_DW(pvlc_reg)];
303
304 memset(in, 0, sizeof(in));
305 MLX5_SET(pvlc_reg, in, local_port, local_port);
306
307 return mlx5_core_access_reg(dev, in, sizeof(in), pvlc,
308 pvlc_size, MLX5_REG_PVLC, 0, 0);
309 }
310
mlx5_query_port_vl_hw_cap(struct mlx5_core_dev * dev,u8 * vl_hw_cap,u8 local_port)311 int mlx5_query_port_vl_hw_cap(struct mlx5_core_dev *dev,
312 u8 *vl_hw_cap, u8 local_port)
313 {
314 u32 out[MLX5_ST_SZ_DW(pvlc_reg)];
315 int err;
316
317 err = mlx5_query_port_pvlc(dev, out, sizeof(out), local_port);
318 if (err)
319 return err;
320
321 *vl_hw_cap = MLX5_GET(pvlc_reg, out, vl_hw_cap);
322
323 return 0;
324 }
325 EXPORT_SYMBOL_GPL(mlx5_query_port_vl_hw_cap);
326
mlx5_set_port_pause(struct mlx5_core_dev * dev,u32 rx_pause,u32 tx_pause)327 int mlx5_set_port_pause(struct mlx5_core_dev *dev, u32 rx_pause, u32 tx_pause)
328 {
329 u32 in[MLX5_ST_SZ_DW(pfcc_reg)];
330 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
331
332 memset(in, 0, sizeof(in));
333 MLX5_SET(pfcc_reg, in, local_port, 1);
334 MLX5_SET(pfcc_reg, in, pptx, tx_pause);
335 MLX5_SET(pfcc_reg, in, pprx, rx_pause);
336
337 return mlx5_core_access_reg(dev, in, sizeof(in), out,
338 sizeof(out), MLX5_REG_PFCC, 0, 1);
339 }
340 EXPORT_SYMBOL_GPL(mlx5_set_port_pause);
341
mlx5_query_port_pause(struct mlx5_core_dev * dev,u32 * rx_pause,u32 * tx_pause)342 int mlx5_query_port_pause(struct mlx5_core_dev *dev,
343 u32 *rx_pause, u32 *tx_pause)
344 {
345 u32 in[MLX5_ST_SZ_DW(pfcc_reg)];
346 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
347 int err;
348
349 memset(in, 0, sizeof(in));
350 MLX5_SET(pfcc_reg, in, local_port, 1);
351
352 err = mlx5_core_access_reg(dev, in, sizeof(in), out,
353 sizeof(out), MLX5_REG_PFCC, 0, 0);
354 if (err)
355 return err;
356
357 if (rx_pause)
358 *rx_pause = MLX5_GET(pfcc_reg, out, pprx);
359
360 if (tx_pause)
361 *tx_pause = MLX5_GET(pfcc_reg, out, pptx);
362
363 return 0;
364 }
365 EXPORT_SYMBOL_GPL(mlx5_query_port_pause);
366