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/port.h>
34 #include "mlx5_core.h"
35
36 /* calling with verbose false will not print error to log */
mlx5_access_reg(struct mlx5_core_dev * dev,void * data_in,int size_in,void * data_out,int size_out,u16 reg_id,int arg,int write,bool verbose)37 int mlx5_access_reg(struct mlx5_core_dev *dev, void *data_in, int size_in,
38 void *data_out, int size_out, u16 reg_id, int arg,
39 int write, bool verbose)
40 {
41 int outlen = MLX5_ST_SZ_BYTES(access_register_out) + size_out;
42 int inlen = MLX5_ST_SZ_BYTES(access_register_in) + size_in;
43 int err = -ENOMEM;
44 u32 *out = NULL;
45 u32 *in = NULL;
46 void *data;
47
48 in = kvzalloc(inlen, GFP_KERNEL);
49 out = kvzalloc(outlen, GFP_KERNEL);
50 if (!in || !out)
51 goto out;
52
53 data = MLX5_ADDR_OF(access_register_in, in, register_data);
54 memcpy(data, data_in, size_in);
55
56 MLX5_SET(access_register_in, in, opcode, MLX5_CMD_OP_ACCESS_REG);
57 MLX5_SET(access_register_in, in, op_mod, !write);
58 MLX5_SET(access_register_in, in, argument, arg);
59 MLX5_SET(access_register_in, in, register_id, reg_id);
60
61 err = mlx5_cmd_do(dev, in, inlen, out, outlen);
62 if (verbose)
63 err = mlx5_cmd_check(dev, err, in, out);
64 if (err)
65 goto out;
66
67 data = MLX5_ADDR_OF(access_register_out, out, register_data);
68 memcpy(data_out, data, size_out);
69
70 out:
71 kvfree(out);
72 kvfree(in);
73 return err;
74 }
75 EXPORT_SYMBOL_GPL(mlx5_access_reg);
76
mlx5_core_access_reg(struct mlx5_core_dev * dev,void * data_in,int size_in,void * data_out,int size_out,u16 reg_id,int arg,int write)77 int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
78 int size_in, void *data_out, int size_out,
79 u16 reg_id, int arg, int write)
80 {
81 return mlx5_access_reg(dev, data_in, size_in, data_out, size_out,
82 reg_id, arg, write, true);
83 }
84 EXPORT_SYMBOL_GPL(mlx5_core_access_reg);
85
mlx5_query_pcam_reg(struct mlx5_core_dev * dev,u32 * pcam,u8 feature_group,u8 access_reg_group)86 int mlx5_query_pcam_reg(struct mlx5_core_dev *dev, u32 *pcam, u8 feature_group,
87 u8 access_reg_group)
88 {
89 u32 in[MLX5_ST_SZ_DW(pcam_reg)] = {0};
90 int sz = MLX5_ST_SZ_BYTES(pcam_reg);
91
92 MLX5_SET(pcam_reg, in, feature_group, feature_group);
93 MLX5_SET(pcam_reg, in, access_reg_group, access_reg_group);
94
95 return mlx5_core_access_reg(dev, in, sz, pcam, sz, MLX5_REG_PCAM, 0, 0);
96 }
97
mlx5_query_mcam_reg(struct mlx5_core_dev * dev,u32 * mcam,u8 feature_group,u8 access_reg_group)98 int mlx5_query_mcam_reg(struct mlx5_core_dev *dev, u32 *mcam, u8 feature_group,
99 u8 access_reg_group)
100 {
101 u32 in[MLX5_ST_SZ_DW(mcam_reg)] = {0};
102 int sz = MLX5_ST_SZ_BYTES(mcam_reg);
103
104 MLX5_SET(mcam_reg, in, feature_group, feature_group);
105 MLX5_SET(mcam_reg, in, access_reg_group, access_reg_group);
106
107 return mlx5_core_access_reg(dev, in, sz, mcam, sz, MLX5_REG_MCAM, 0, 0);
108 }
109
mlx5_query_qcam_reg(struct mlx5_core_dev * mdev,u32 * qcam,u8 feature_group,u8 access_reg_group)110 int mlx5_query_qcam_reg(struct mlx5_core_dev *mdev, u32 *qcam,
111 u8 feature_group, u8 access_reg_group)
112 {
113 u32 in[MLX5_ST_SZ_DW(qcam_reg)] = {};
114 int sz = MLX5_ST_SZ_BYTES(qcam_reg);
115
116 MLX5_SET(qcam_reg, in, feature_group, feature_group);
117 MLX5_SET(qcam_reg, in, access_reg_group, access_reg_group);
118
119 return mlx5_core_access_reg(mdev, in, sz, qcam, sz, MLX5_REG_QCAM, 0, 0);
120 }
121
122 struct mlx5_reg_pcap {
123 u8 rsvd0;
124 u8 port_num;
125 u8 rsvd1[2];
126 __be32 caps_127_96;
127 __be32 caps_95_64;
128 __be32 caps_63_32;
129 __be32 caps_31_0;
130 };
131
mlx5_set_port_caps(struct mlx5_core_dev * dev,u8 port_num,u32 caps)132 int mlx5_set_port_caps(struct mlx5_core_dev *dev, u8 port_num, u32 caps)
133 {
134 struct mlx5_reg_pcap in;
135 struct mlx5_reg_pcap out;
136
137 memset(&in, 0, sizeof(in));
138 in.caps_127_96 = cpu_to_be32(caps);
139 in.port_num = port_num;
140
141 return mlx5_core_access_reg(dev, &in, sizeof(in), &out,
142 sizeof(out), MLX5_REG_PCAP, 0, 1);
143 }
144 EXPORT_SYMBOL_GPL(mlx5_set_port_caps);
145
mlx5_query_port_ptys(struct mlx5_core_dev * dev,u32 * ptys,int ptys_size,int proto_mask,u8 local_port)146 int mlx5_query_port_ptys(struct mlx5_core_dev *dev, u32 *ptys,
147 int ptys_size, int proto_mask, u8 local_port)
148 {
149 u32 in[MLX5_ST_SZ_DW(ptys_reg)] = {0};
150
151 MLX5_SET(ptys_reg, in, local_port, local_port);
152 MLX5_SET(ptys_reg, in, proto_mask, proto_mask);
153 return mlx5_core_access_reg(dev, in, sizeof(in), ptys,
154 ptys_size, MLX5_REG_PTYS, 0, 0);
155 }
156 EXPORT_SYMBOL_GPL(mlx5_query_port_ptys);
157
mlx5_set_port_beacon(struct mlx5_core_dev * dev,u16 beacon_duration)158 int mlx5_set_port_beacon(struct mlx5_core_dev *dev, u16 beacon_duration)
159 {
160 u32 in[MLX5_ST_SZ_DW(mlcr_reg)] = {0};
161 u32 out[MLX5_ST_SZ_DW(mlcr_reg)];
162
163 MLX5_SET(mlcr_reg, in, local_port, 1);
164 MLX5_SET(mlcr_reg, in, beacon_duration, beacon_duration);
165 return mlx5_core_access_reg(dev, in, sizeof(in), out,
166 sizeof(out), MLX5_REG_MLCR, 0, 1);
167 }
168
mlx5_query_ib_port_oper(struct mlx5_core_dev * dev,u16 * link_width_oper,u16 * proto_oper,u8 local_port)169 int mlx5_query_ib_port_oper(struct mlx5_core_dev *dev, u16 *link_width_oper,
170 u16 *proto_oper, u8 local_port)
171 {
172 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
173 int err;
174
175 err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_IB,
176 local_port);
177 if (err)
178 return err;
179
180 *link_width_oper = MLX5_GET(ptys_reg, out, ib_link_width_oper);
181 *proto_oper = MLX5_GET(ptys_reg, out, ib_proto_oper);
182
183 return 0;
184 }
185 EXPORT_SYMBOL(mlx5_query_ib_port_oper);
186
187 /* This function should be used after setting a port register only */
mlx5_toggle_port_link(struct mlx5_core_dev * dev)188 void mlx5_toggle_port_link(struct mlx5_core_dev *dev)
189 {
190 enum mlx5_port_status ps;
191
192 mlx5_query_port_admin_status(dev, &ps);
193 mlx5_set_port_admin_status(dev, MLX5_PORT_DOWN);
194 if (ps == MLX5_PORT_UP)
195 mlx5_set_port_admin_status(dev, MLX5_PORT_UP);
196 }
197 EXPORT_SYMBOL_GPL(mlx5_toggle_port_link);
198
mlx5_set_port_admin_status(struct mlx5_core_dev * dev,enum mlx5_port_status status)199 int mlx5_set_port_admin_status(struct mlx5_core_dev *dev,
200 enum mlx5_port_status status)
201 {
202 u32 in[MLX5_ST_SZ_DW(paos_reg)] = {0};
203 u32 out[MLX5_ST_SZ_DW(paos_reg)];
204
205 MLX5_SET(paos_reg, in, local_port, 1);
206 MLX5_SET(paos_reg, in, admin_status, status);
207 MLX5_SET(paos_reg, in, ase, 1);
208 return mlx5_core_access_reg(dev, in, sizeof(in), out,
209 sizeof(out), MLX5_REG_PAOS, 0, 1);
210 }
211 EXPORT_SYMBOL_GPL(mlx5_set_port_admin_status);
212
mlx5_query_port_admin_status(struct mlx5_core_dev * dev,enum mlx5_port_status * status)213 int mlx5_query_port_admin_status(struct mlx5_core_dev *dev,
214 enum mlx5_port_status *status)
215 {
216 u32 in[MLX5_ST_SZ_DW(paos_reg)] = {0};
217 u32 out[MLX5_ST_SZ_DW(paos_reg)];
218 int err;
219
220 MLX5_SET(paos_reg, in, local_port, 1);
221 err = mlx5_core_access_reg(dev, in, sizeof(in), out,
222 sizeof(out), MLX5_REG_PAOS, 0, 0);
223 if (err)
224 return err;
225 *status = MLX5_GET(paos_reg, out, admin_status);
226 return 0;
227 }
228 EXPORT_SYMBOL_GPL(mlx5_query_port_admin_status);
229
mlx5_query_port_mtu(struct mlx5_core_dev * dev,u16 * admin_mtu,u16 * max_mtu,u16 * oper_mtu,u8 port)230 static void mlx5_query_port_mtu(struct mlx5_core_dev *dev, u16 *admin_mtu,
231 u16 *max_mtu, u16 *oper_mtu, u8 port)
232 {
233 u32 in[MLX5_ST_SZ_DW(pmtu_reg)] = {0};
234 u32 out[MLX5_ST_SZ_DW(pmtu_reg)];
235
236 MLX5_SET(pmtu_reg, in, local_port, port);
237 mlx5_core_access_reg(dev, in, sizeof(in), out,
238 sizeof(out), MLX5_REG_PMTU, 0, 0);
239
240 if (max_mtu)
241 *max_mtu = MLX5_GET(pmtu_reg, out, max_mtu);
242 if (oper_mtu)
243 *oper_mtu = MLX5_GET(pmtu_reg, out, oper_mtu);
244 if (admin_mtu)
245 *admin_mtu = MLX5_GET(pmtu_reg, out, admin_mtu);
246 }
247
mlx5_set_port_mtu(struct mlx5_core_dev * dev,u16 mtu,u8 port)248 int mlx5_set_port_mtu(struct mlx5_core_dev *dev, u16 mtu, u8 port)
249 {
250 u32 in[MLX5_ST_SZ_DW(pmtu_reg)] = {0};
251 u32 out[MLX5_ST_SZ_DW(pmtu_reg)];
252
253 MLX5_SET(pmtu_reg, in, admin_mtu, mtu);
254 MLX5_SET(pmtu_reg, in, local_port, port);
255 return mlx5_core_access_reg(dev, in, sizeof(in), out,
256 sizeof(out), MLX5_REG_PMTU, 0, 1);
257 }
258 EXPORT_SYMBOL_GPL(mlx5_set_port_mtu);
259
mlx5_query_port_max_mtu(struct mlx5_core_dev * dev,u16 * max_mtu,u8 port)260 void mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, u16 *max_mtu,
261 u8 port)
262 {
263 mlx5_query_port_mtu(dev, NULL, max_mtu, NULL, port);
264 }
265 EXPORT_SYMBOL_GPL(mlx5_query_port_max_mtu);
266
mlx5_query_port_oper_mtu(struct mlx5_core_dev * dev,u16 * oper_mtu,u8 port)267 void mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, u16 *oper_mtu,
268 u8 port)
269 {
270 mlx5_query_port_mtu(dev, NULL, NULL, oper_mtu, port);
271 }
272 EXPORT_SYMBOL_GPL(mlx5_query_port_oper_mtu);
273
mlx5_query_module_num(struct mlx5_core_dev * dev,int * module_num)274 static int mlx5_query_module_num(struct mlx5_core_dev *dev, int *module_num)
275 {
276 u32 in[MLX5_ST_SZ_DW(pmlp_reg)] = {0};
277 u32 out[MLX5_ST_SZ_DW(pmlp_reg)];
278 int err;
279
280 MLX5_SET(pmlp_reg, in, local_port, 1);
281 err = mlx5_core_access_reg(dev, in, sizeof(in), out, sizeof(out),
282 MLX5_REG_PMLP, 0, 0);
283 if (err)
284 return err;
285
286 *module_num = MLX5_GET(lane_2_module_mapping,
287 MLX5_ADDR_OF(pmlp_reg, out, lane0_module_mapping),
288 module);
289
290 return 0;
291 }
292
mlx5_query_module_id(struct mlx5_core_dev * dev,int module_num,u8 * module_id)293 static int mlx5_query_module_id(struct mlx5_core_dev *dev, int module_num,
294 u8 *module_id)
295 {
296 u32 in[MLX5_ST_SZ_DW(mcia_reg)] = {};
297 u32 out[MLX5_ST_SZ_DW(mcia_reg)];
298 int err, status;
299 u8 *ptr;
300
301 MLX5_SET(mcia_reg, in, i2c_device_address, MLX5_I2C_ADDR_LOW);
302 MLX5_SET(mcia_reg, in, module, module_num);
303 MLX5_SET(mcia_reg, in, device_address, 0);
304 MLX5_SET(mcia_reg, in, page_number, 0);
305 MLX5_SET(mcia_reg, in, size, 1);
306 MLX5_SET(mcia_reg, in, l, 0);
307
308 err = mlx5_core_access_reg(dev, in, sizeof(in), out,
309 sizeof(out), MLX5_REG_MCIA, 0, 0);
310 if (err)
311 return err;
312
313 status = MLX5_GET(mcia_reg, out, status);
314 if (status) {
315 mlx5_core_err(dev, "query_mcia_reg failed: status: 0x%x\n",
316 status);
317 return -EIO;
318 }
319 ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
320
321 *module_id = ptr[0];
322
323 return 0;
324 }
325
mlx5_qsfp_eeprom_page(u16 offset)326 static int mlx5_qsfp_eeprom_page(u16 offset)
327 {
328 if (offset < MLX5_EEPROM_PAGE_LENGTH)
329 /* Addresses between 0-255 - page 00 */
330 return 0;
331
332 /* Addresses between 256 - 639 belongs to pages 01, 02 and 03
333 * For example, offset = 400 belongs to page 02:
334 * 1 + ((400 - 256)/128) = 2
335 */
336 return 1 + ((offset - MLX5_EEPROM_PAGE_LENGTH) /
337 MLX5_EEPROM_HIGH_PAGE_LENGTH);
338 }
339
mlx5_qsfp_eeprom_high_page_offset(int page_num)340 static int mlx5_qsfp_eeprom_high_page_offset(int page_num)
341 {
342 if (!page_num) /* Page 0 always start from low page */
343 return 0;
344
345 /* High page */
346 return page_num * MLX5_EEPROM_HIGH_PAGE_LENGTH;
347 }
348
mlx5_qsfp_eeprom_params_set(u16 * i2c_addr,int * page_num,u16 * offset)349 static void mlx5_qsfp_eeprom_params_set(u16 *i2c_addr, int *page_num, u16 *offset)
350 {
351 *i2c_addr = MLX5_I2C_ADDR_LOW;
352 *page_num = mlx5_qsfp_eeprom_page(*offset);
353 *offset -= mlx5_qsfp_eeprom_high_page_offset(*page_num);
354 }
355
mlx5_sfp_eeprom_params_set(u16 * i2c_addr,int * page_num,u16 * offset)356 static void mlx5_sfp_eeprom_params_set(u16 *i2c_addr, int *page_num, u16 *offset)
357 {
358 *i2c_addr = MLX5_I2C_ADDR_LOW;
359 *page_num = 0;
360
361 if (*offset < MLX5_EEPROM_PAGE_LENGTH)
362 return;
363
364 *i2c_addr = MLX5_I2C_ADDR_HIGH;
365 *offset -= MLX5_EEPROM_PAGE_LENGTH;
366 }
367
mlx5_mcia_max_bytes(struct mlx5_core_dev * dev)368 static int mlx5_mcia_max_bytes(struct mlx5_core_dev *dev)
369 {
370 /* mcia supports either 12 dwords or 32 dwords */
371 return (MLX5_CAP_MCAM_FEATURE(dev, mcia_32dwords) ? 32 : 12) * sizeof(u32);
372 }
373
mlx5_query_mcia(struct mlx5_core_dev * dev,struct mlx5_module_eeprom_query_params * params,u8 * data)374 static int mlx5_query_mcia(struct mlx5_core_dev *dev,
375 struct mlx5_module_eeprom_query_params *params, u8 *data)
376 {
377 u32 in[MLX5_ST_SZ_DW(mcia_reg)] = {};
378 u32 out[MLX5_ST_SZ_DW(mcia_reg)];
379 int status, err;
380 void *ptr;
381 u16 size;
382
383 size = min_t(int, params->size, mlx5_mcia_max_bytes(dev));
384
385 MLX5_SET(mcia_reg, in, l, 0);
386 MLX5_SET(mcia_reg, in, size, size);
387 MLX5_SET(mcia_reg, in, module, params->module_number);
388 MLX5_SET(mcia_reg, in, device_address, params->offset);
389 MLX5_SET(mcia_reg, in, page_number, params->page);
390 MLX5_SET(mcia_reg, in, i2c_device_address, params->i2c_address);
391
392 err = mlx5_core_access_reg(dev, in, sizeof(in), out,
393 sizeof(out), MLX5_REG_MCIA, 0, 0);
394 if (err)
395 return err;
396
397 status = MLX5_GET(mcia_reg, out, status);
398 if (status) {
399 mlx5_core_err(dev, "query_mcia_reg failed: status: 0x%x\n",
400 status);
401 return -EIO;
402 }
403
404 ptr = MLX5_ADDR_OF(mcia_reg, out, dword_0);
405 memcpy(data, ptr, size);
406
407 return size;
408 }
409
mlx5_query_module_eeprom(struct mlx5_core_dev * dev,u16 offset,u16 size,u8 * data)410 int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
411 u16 offset, u16 size, u8 *data)
412 {
413 struct mlx5_module_eeprom_query_params query = {0};
414 u8 module_id;
415 int err;
416
417 err = mlx5_query_module_num(dev, &query.module_number);
418 if (err)
419 return err;
420
421 err = mlx5_query_module_id(dev, query.module_number, &module_id);
422 if (err)
423 return err;
424
425 switch (module_id) {
426 case MLX5_MODULE_ID_SFP:
427 mlx5_sfp_eeprom_params_set(&query.i2c_address, &query.page, &offset);
428 break;
429 case MLX5_MODULE_ID_QSFP:
430 case MLX5_MODULE_ID_QSFP_PLUS:
431 case MLX5_MODULE_ID_QSFP28:
432 mlx5_qsfp_eeprom_params_set(&query.i2c_address, &query.page, &offset);
433 break;
434 default:
435 mlx5_core_err(dev, "Module ID not recognized: 0x%x\n", module_id);
436 return -EINVAL;
437 }
438
439 if (offset + size > MLX5_EEPROM_PAGE_LENGTH)
440 /* Cross pages read, read until offset 256 in low page */
441 size = MLX5_EEPROM_PAGE_LENGTH - offset;
442
443 query.size = size;
444 query.offset = offset;
445
446 return mlx5_query_mcia(dev, &query, data);
447 }
448 EXPORT_SYMBOL_GPL(mlx5_query_module_eeprom);
449
mlx5_query_module_eeprom_by_page(struct mlx5_core_dev * dev,struct mlx5_module_eeprom_query_params * params,u8 * data)450 int mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
451 struct mlx5_module_eeprom_query_params *params,
452 u8 *data)
453 {
454 int err;
455
456 err = mlx5_query_module_num(dev, ¶ms->module_number);
457 if (err)
458 return err;
459
460 if (params->i2c_address != MLX5_I2C_ADDR_HIGH &&
461 params->i2c_address != MLX5_I2C_ADDR_LOW) {
462 mlx5_core_err(dev, "I2C address not recognized: 0x%x\n", params->i2c_address);
463 return -EINVAL;
464 }
465
466 return mlx5_query_mcia(dev, params, data);
467 }
468 EXPORT_SYMBOL_GPL(mlx5_query_module_eeprom_by_page);
469
mlx5_query_port_pvlc(struct mlx5_core_dev * dev,u32 * pvlc,int pvlc_size,u8 local_port)470 static int mlx5_query_port_pvlc(struct mlx5_core_dev *dev, u32 *pvlc,
471 int pvlc_size, u8 local_port)
472 {
473 u32 in[MLX5_ST_SZ_DW(pvlc_reg)] = {0};
474
475 MLX5_SET(pvlc_reg, in, local_port, local_port);
476 return mlx5_core_access_reg(dev, in, sizeof(in), pvlc,
477 pvlc_size, MLX5_REG_PVLC, 0, 0);
478 }
479
mlx5_query_port_vl_hw_cap(struct mlx5_core_dev * dev,u8 * vl_hw_cap,u8 local_port)480 int mlx5_query_port_vl_hw_cap(struct mlx5_core_dev *dev,
481 u8 *vl_hw_cap, u8 local_port)
482 {
483 u32 out[MLX5_ST_SZ_DW(pvlc_reg)];
484 int err;
485
486 err = mlx5_query_port_pvlc(dev, out, sizeof(out), local_port);
487 if (err)
488 return err;
489
490 *vl_hw_cap = MLX5_GET(pvlc_reg, out, vl_hw_cap);
491
492 return 0;
493 }
494 EXPORT_SYMBOL_GPL(mlx5_query_port_vl_hw_cap);
495
mlx5_query_pfcc_reg(struct mlx5_core_dev * dev,u32 * out,u32 out_size)496 static int mlx5_query_pfcc_reg(struct mlx5_core_dev *dev, u32 *out,
497 u32 out_size)
498 {
499 u32 in[MLX5_ST_SZ_DW(pfcc_reg)] = {0};
500
501 MLX5_SET(pfcc_reg, in, local_port, 1);
502
503 return mlx5_core_access_reg(dev, in, sizeof(in), out,
504 out_size, MLX5_REG_PFCC, 0, 0);
505 }
506
mlx5_set_port_pause(struct mlx5_core_dev * dev,u32 rx_pause,u32 tx_pause)507 int mlx5_set_port_pause(struct mlx5_core_dev *dev, u32 rx_pause, u32 tx_pause)
508 {
509 u32 in[MLX5_ST_SZ_DW(pfcc_reg)] = {0};
510 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
511
512 MLX5_SET(pfcc_reg, in, local_port, 1);
513 MLX5_SET(pfcc_reg, in, pptx, tx_pause);
514 MLX5_SET(pfcc_reg, in, pprx, rx_pause);
515
516 return mlx5_core_access_reg(dev, in, sizeof(in), out,
517 sizeof(out), MLX5_REG_PFCC, 0, 1);
518 }
519 EXPORT_SYMBOL_GPL(mlx5_set_port_pause);
520
mlx5_query_port_pause(struct mlx5_core_dev * dev,u32 * rx_pause,u32 * tx_pause)521 int mlx5_query_port_pause(struct mlx5_core_dev *dev,
522 u32 *rx_pause, u32 *tx_pause)
523 {
524 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
525 int err;
526
527 err = mlx5_query_pfcc_reg(dev, out, sizeof(out));
528 if (err)
529 return err;
530
531 if (rx_pause)
532 *rx_pause = MLX5_GET(pfcc_reg, out, pprx);
533
534 if (tx_pause)
535 *tx_pause = MLX5_GET(pfcc_reg, out, pptx);
536
537 return 0;
538 }
539 EXPORT_SYMBOL_GPL(mlx5_query_port_pause);
540
mlx5_set_port_stall_watermark(struct mlx5_core_dev * dev,u16 stall_critical_watermark,u16 stall_minor_watermark)541 int mlx5_set_port_stall_watermark(struct mlx5_core_dev *dev,
542 u16 stall_critical_watermark,
543 u16 stall_minor_watermark)
544 {
545 u32 in[MLX5_ST_SZ_DW(pfcc_reg)] = {0};
546 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
547
548 MLX5_SET(pfcc_reg, in, local_port, 1);
549 MLX5_SET(pfcc_reg, in, pptx_mask_n, 1);
550 MLX5_SET(pfcc_reg, in, pprx_mask_n, 1);
551 MLX5_SET(pfcc_reg, in, ppan_mask_n, 1);
552 MLX5_SET(pfcc_reg, in, critical_stall_mask, 1);
553 MLX5_SET(pfcc_reg, in, minor_stall_mask, 1);
554 MLX5_SET(pfcc_reg, in, device_stall_critical_watermark,
555 stall_critical_watermark);
556 MLX5_SET(pfcc_reg, in, device_stall_minor_watermark, stall_minor_watermark);
557
558 return mlx5_core_access_reg(dev, in, sizeof(in), out,
559 sizeof(out), MLX5_REG_PFCC, 0, 1);
560 }
561
mlx5_query_port_stall_watermark(struct mlx5_core_dev * dev,u16 * stall_critical_watermark,u16 * stall_minor_watermark)562 int mlx5_query_port_stall_watermark(struct mlx5_core_dev *dev,
563 u16 *stall_critical_watermark,
564 u16 *stall_minor_watermark)
565 {
566 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
567 int err;
568
569 err = mlx5_query_pfcc_reg(dev, out, sizeof(out));
570 if (err)
571 return err;
572
573 if (stall_critical_watermark)
574 *stall_critical_watermark = MLX5_GET(pfcc_reg, out,
575 device_stall_critical_watermark);
576
577 if (stall_minor_watermark)
578 *stall_minor_watermark = MLX5_GET(pfcc_reg, out,
579 device_stall_minor_watermark);
580
581 return 0;
582 }
583
mlx5_set_port_pfc(struct mlx5_core_dev * dev,u8 pfc_en_tx,u8 pfc_en_rx)584 int mlx5_set_port_pfc(struct mlx5_core_dev *dev, u8 pfc_en_tx, u8 pfc_en_rx)
585 {
586 u32 in[MLX5_ST_SZ_DW(pfcc_reg)] = {0};
587 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
588
589 MLX5_SET(pfcc_reg, in, local_port, 1);
590 MLX5_SET(pfcc_reg, in, pfctx, pfc_en_tx);
591 MLX5_SET(pfcc_reg, in, pfcrx, pfc_en_rx);
592 MLX5_SET_TO_ONES(pfcc_reg, in, prio_mask_tx);
593 MLX5_SET_TO_ONES(pfcc_reg, in, prio_mask_rx);
594
595 return mlx5_core_access_reg(dev, in, sizeof(in), out,
596 sizeof(out), MLX5_REG_PFCC, 0, 1);
597 }
598 EXPORT_SYMBOL_GPL(mlx5_set_port_pfc);
599
mlx5_query_port_pfc(struct mlx5_core_dev * dev,u8 * pfc_en_tx,u8 * pfc_en_rx)600 int mlx5_query_port_pfc(struct mlx5_core_dev *dev, u8 *pfc_en_tx, u8 *pfc_en_rx)
601 {
602 u32 out[MLX5_ST_SZ_DW(pfcc_reg)];
603 int err;
604
605 err = mlx5_query_pfcc_reg(dev, out, sizeof(out));
606 if (err)
607 return err;
608
609 if (pfc_en_tx)
610 *pfc_en_tx = MLX5_GET(pfcc_reg, out, pfctx);
611
612 if (pfc_en_rx)
613 *pfc_en_rx = MLX5_GET(pfcc_reg, out, pfcrx);
614
615 return 0;
616 }
617 EXPORT_SYMBOL_GPL(mlx5_query_port_pfc);
618
mlx5_max_tc(struct mlx5_core_dev * mdev)619 int mlx5_max_tc(struct mlx5_core_dev *mdev)
620 {
621 u8 num_tc = MLX5_CAP_GEN(mdev, max_tc) ? : 8;
622
623 return num_tc - 1;
624 }
625
mlx5_query_port_dcbx_param(struct mlx5_core_dev * mdev,u32 * out)626 int mlx5_query_port_dcbx_param(struct mlx5_core_dev *mdev, u32 *out)
627 {
628 u32 in[MLX5_ST_SZ_DW(dcbx_param)] = {0};
629
630 MLX5_SET(dcbx_param, in, port_number, 1);
631
632 return mlx5_core_access_reg(mdev, in, sizeof(in), out,
633 sizeof(in), MLX5_REG_DCBX_PARAM, 0, 0);
634 }
635
mlx5_set_port_dcbx_param(struct mlx5_core_dev * mdev,u32 * in)636 int mlx5_set_port_dcbx_param(struct mlx5_core_dev *mdev, u32 *in)
637 {
638 u32 out[MLX5_ST_SZ_DW(dcbx_param)];
639
640 MLX5_SET(dcbx_param, in, port_number, 1);
641
642 return mlx5_core_access_reg(mdev, in, sizeof(out), out,
643 sizeof(out), MLX5_REG_DCBX_PARAM, 0, 1);
644 }
645
mlx5_set_port_prio_tc(struct mlx5_core_dev * mdev,u8 * prio_tc)646 int mlx5_set_port_prio_tc(struct mlx5_core_dev *mdev, u8 *prio_tc)
647 {
648 u32 in[MLX5_ST_SZ_DW(qtct_reg)] = {0};
649 u32 out[MLX5_ST_SZ_DW(qtct_reg)];
650 int err;
651 int i;
652
653 for (i = 0; i < 8; i++) {
654 if (prio_tc[i] > mlx5_max_tc(mdev))
655 return -EINVAL;
656
657 MLX5_SET(qtct_reg, in, prio, i);
658 MLX5_SET(qtct_reg, in, tclass, prio_tc[i]);
659
660 err = mlx5_core_access_reg(mdev, in, sizeof(in), out,
661 sizeof(out), MLX5_REG_QTCT, 0, 1);
662 if (err)
663 return err;
664 }
665
666 return 0;
667 }
668 EXPORT_SYMBOL_GPL(mlx5_set_port_prio_tc);
669
mlx5_query_port_prio_tc(struct mlx5_core_dev * mdev,u8 prio,u8 * tc)670 int mlx5_query_port_prio_tc(struct mlx5_core_dev *mdev,
671 u8 prio, u8 *tc)
672 {
673 u32 in[MLX5_ST_SZ_DW(qtct_reg)];
674 u32 out[MLX5_ST_SZ_DW(qtct_reg)];
675 int err;
676
677 memset(in, 0, sizeof(in));
678 memset(out, 0, sizeof(out));
679
680 MLX5_SET(qtct_reg, in, port_number, 1);
681 MLX5_SET(qtct_reg, in, prio, prio);
682
683 err = mlx5_core_access_reg(mdev, in, sizeof(in), out,
684 sizeof(out), MLX5_REG_QTCT, 0, 0);
685 if (!err)
686 *tc = MLX5_GET(qtct_reg, out, tclass);
687
688 return err;
689 }
690 EXPORT_SYMBOL_GPL(mlx5_query_port_prio_tc);
691
mlx5_set_port_qetcr_reg(struct mlx5_core_dev * mdev,u32 * in,int inlen)692 static int mlx5_set_port_qetcr_reg(struct mlx5_core_dev *mdev, u32 *in,
693 int inlen)
694 {
695 u32 out[MLX5_ST_SZ_DW(qetc_reg)];
696
697 if (!MLX5_CAP_GEN(mdev, ets))
698 return -EOPNOTSUPP;
699
700 return mlx5_core_access_reg(mdev, in, inlen, out, sizeof(out),
701 MLX5_REG_QETCR, 0, 1);
702 }
703
mlx5_query_port_qetcr_reg(struct mlx5_core_dev * mdev,u32 * out,int outlen)704 static int mlx5_query_port_qetcr_reg(struct mlx5_core_dev *mdev, u32 *out,
705 int outlen)
706 {
707 u32 in[MLX5_ST_SZ_DW(qetc_reg)];
708
709 if (!MLX5_CAP_GEN(mdev, ets))
710 return -EOPNOTSUPP;
711
712 memset(in, 0, sizeof(in));
713 return mlx5_core_access_reg(mdev, in, sizeof(in), out, outlen,
714 MLX5_REG_QETCR, 0, 0);
715 }
716
mlx5_set_port_tc_group(struct mlx5_core_dev * mdev,u8 * tc_group)717 int mlx5_set_port_tc_group(struct mlx5_core_dev *mdev, u8 *tc_group)
718 {
719 u32 in[MLX5_ST_SZ_DW(qetc_reg)] = {0};
720 int i;
721
722 for (i = 0; i <= mlx5_max_tc(mdev); i++) {
723 MLX5_SET(qetc_reg, in, tc_configuration[i].g, 1);
724 MLX5_SET(qetc_reg, in, tc_configuration[i].group, tc_group[i]);
725 }
726
727 return mlx5_set_port_qetcr_reg(mdev, in, sizeof(in));
728 }
729 EXPORT_SYMBOL_GPL(mlx5_set_port_tc_group);
730
mlx5_query_port_tc_group(struct mlx5_core_dev * mdev,u8 tc,u8 * tc_group)731 int mlx5_query_port_tc_group(struct mlx5_core_dev *mdev,
732 u8 tc, u8 *tc_group)
733 {
734 u32 out[MLX5_ST_SZ_DW(qetc_reg)];
735 void *ets_tcn_conf;
736 int err;
737
738 err = mlx5_query_port_qetcr_reg(mdev, out, sizeof(out));
739 if (err)
740 return err;
741
742 ets_tcn_conf = MLX5_ADDR_OF(qetc_reg, out,
743 tc_configuration[tc]);
744
745 *tc_group = MLX5_GET(ets_tcn_config_reg, ets_tcn_conf,
746 group);
747
748 return 0;
749 }
750 EXPORT_SYMBOL_GPL(mlx5_query_port_tc_group);
751
mlx5_set_port_tc_bw_alloc(struct mlx5_core_dev * mdev,u8 * tc_bw)752 int mlx5_set_port_tc_bw_alloc(struct mlx5_core_dev *mdev, u8 *tc_bw)
753 {
754 u32 in[MLX5_ST_SZ_DW(qetc_reg)] = {0};
755 int i;
756
757 for (i = 0; i <= mlx5_max_tc(mdev); i++) {
758 MLX5_SET(qetc_reg, in, tc_configuration[i].b, 1);
759 MLX5_SET(qetc_reg, in, tc_configuration[i].bw_allocation, tc_bw[i]);
760 }
761
762 return mlx5_set_port_qetcr_reg(mdev, in, sizeof(in));
763 }
764 EXPORT_SYMBOL_GPL(mlx5_set_port_tc_bw_alloc);
765
mlx5_query_port_tc_bw_alloc(struct mlx5_core_dev * mdev,u8 tc,u8 * bw_pct)766 int mlx5_query_port_tc_bw_alloc(struct mlx5_core_dev *mdev,
767 u8 tc, u8 *bw_pct)
768 {
769 u32 out[MLX5_ST_SZ_DW(qetc_reg)];
770 void *ets_tcn_conf;
771 int err;
772
773 err = mlx5_query_port_qetcr_reg(mdev, out, sizeof(out));
774 if (err)
775 return err;
776
777 ets_tcn_conf = MLX5_ADDR_OF(qetc_reg, out,
778 tc_configuration[tc]);
779
780 *bw_pct = MLX5_GET(ets_tcn_config_reg, ets_tcn_conf,
781 bw_allocation);
782
783 return 0;
784 }
785 EXPORT_SYMBOL_GPL(mlx5_query_port_tc_bw_alloc);
786
mlx5_modify_port_ets_rate_limit(struct mlx5_core_dev * mdev,u8 * max_bw_value,u8 * max_bw_units)787 int mlx5_modify_port_ets_rate_limit(struct mlx5_core_dev *mdev,
788 u8 *max_bw_value,
789 u8 *max_bw_units)
790 {
791 u32 in[MLX5_ST_SZ_DW(qetc_reg)] = {0};
792 void *ets_tcn_conf;
793 int i;
794
795 MLX5_SET(qetc_reg, in, port_number, 1);
796
797 for (i = 0; i <= mlx5_max_tc(mdev); i++) {
798 ets_tcn_conf = MLX5_ADDR_OF(qetc_reg, in, tc_configuration[i]);
799
800 MLX5_SET(ets_tcn_config_reg, ets_tcn_conf, r, 1);
801 MLX5_SET(ets_tcn_config_reg, ets_tcn_conf, max_bw_units,
802 max_bw_units[i]);
803 MLX5_SET(ets_tcn_config_reg, ets_tcn_conf, max_bw_value,
804 max_bw_value[i]);
805 }
806
807 return mlx5_set_port_qetcr_reg(mdev, in, sizeof(in));
808 }
809 EXPORT_SYMBOL_GPL(mlx5_modify_port_ets_rate_limit);
810
mlx5_query_port_ets_rate_limit(struct mlx5_core_dev * mdev,u8 * max_bw_value,u8 * max_bw_units)811 int mlx5_query_port_ets_rate_limit(struct mlx5_core_dev *mdev,
812 u8 *max_bw_value,
813 u8 *max_bw_units)
814 {
815 u32 out[MLX5_ST_SZ_DW(qetc_reg)];
816 void *ets_tcn_conf;
817 int err;
818 int i;
819
820 err = mlx5_query_port_qetcr_reg(mdev, out, sizeof(out));
821 if (err)
822 return err;
823
824 for (i = 0; i <= mlx5_max_tc(mdev); i++) {
825 ets_tcn_conf = MLX5_ADDR_OF(qetc_reg, out, tc_configuration[i]);
826
827 max_bw_value[i] = MLX5_GET(ets_tcn_config_reg, ets_tcn_conf,
828 max_bw_value);
829 max_bw_units[i] = MLX5_GET(ets_tcn_config_reg, ets_tcn_conf,
830 max_bw_units);
831 }
832
833 return 0;
834 }
835 EXPORT_SYMBOL_GPL(mlx5_query_port_ets_rate_limit);
836
mlx5_set_port_wol(struct mlx5_core_dev * mdev,u8 wol_mode)837 int mlx5_set_port_wol(struct mlx5_core_dev *mdev, u8 wol_mode)
838 {
839 u32 in[MLX5_ST_SZ_DW(set_wol_rol_in)] = {};
840
841 MLX5_SET(set_wol_rol_in, in, opcode, MLX5_CMD_OP_SET_WOL_ROL);
842 MLX5_SET(set_wol_rol_in, in, wol_mode_valid, 1);
843 MLX5_SET(set_wol_rol_in, in, wol_mode, wol_mode);
844 return mlx5_cmd_exec_in(mdev, set_wol_rol, in);
845 }
846 EXPORT_SYMBOL_GPL(mlx5_set_port_wol);
847
mlx5_query_port_wol(struct mlx5_core_dev * mdev,u8 * wol_mode)848 int mlx5_query_port_wol(struct mlx5_core_dev *mdev, u8 *wol_mode)
849 {
850 u32 out[MLX5_ST_SZ_DW(query_wol_rol_out)] = {};
851 u32 in[MLX5_ST_SZ_DW(query_wol_rol_in)] = {};
852 int err;
853
854 MLX5_SET(query_wol_rol_in, in, opcode, MLX5_CMD_OP_QUERY_WOL_ROL);
855 err = mlx5_cmd_exec_inout(mdev, query_wol_rol, in, out);
856 if (!err)
857 *wol_mode = MLX5_GET(query_wol_rol_out, out, wol_mode);
858
859 return err;
860 }
861 EXPORT_SYMBOL_GPL(mlx5_query_port_wol);
862
mlx5_query_ports_check(struct mlx5_core_dev * mdev,u32 * out,int outlen)863 int mlx5_query_ports_check(struct mlx5_core_dev *mdev, u32 *out, int outlen)
864 {
865 u32 in[MLX5_ST_SZ_DW(pcmr_reg)] = {0};
866
867 MLX5_SET(pcmr_reg, in, local_port, 1);
868 return mlx5_core_access_reg(mdev, in, sizeof(in), out,
869 outlen, MLX5_REG_PCMR, 0, 0);
870 }
871
mlx5_set_ports_check(struct mlx5_core_dev * mdev,u32 * in,int inlen)872 int mlx5_set_ports_check(struct mlx5_core_dev *mdev, u32 *in, int inlen)
873 {
874 u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
875
876 return mlx5_core_access_reg(mdev, in, inlen, out,
877 sizeof(out), MLX5_REG_PCMR, 0, 1);
878 }
879
mlx5_set_port_fcs(struct mlx5_core_dev * mdev,u8 enable)880 int mlx5_set_port_fcs(struct mlx5_core_dev *mdev, u8 enable)
881 {
882 u32 in[MLX5_ST_SZ_DW(pcmr_reg)] = {0};
883 int err;
884
885 err = mlx5_query_ports_check(mdev, in, sizeof(in));
886 if (err)
887 return err;
888 MLX5_SET(pcmr_reg, in, local_port, 1);
889 MLX5_SET(pcmr_reg, in, fcs_chk, enable);
890 return mlx5_set_ports_check(mdev, in, sizeof(in));
891 }
892
mlx5_query_port_fcs(struct mlx5_core_dev * mdev,bool * supported,bool * enabled)893 void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
894 bool *enabled)
895 {
896 u32 out[MLX5_ST_SZ_DW(pcmr_reg)];
897 /* Default values for FW which do not support MLX5_REG_PCMR */
898 *supported = false;
899 *enabled = true;
900
901 if (!MLX5_CAP_GEN(mdev, ports_check))
902 return;
903
904 if (mlx5_query_ports_check(mdev, out, sizeof(out)))
905 return;
906
907 *supported = !!(MLX5_GET(pcmr_reg, out, fcs_cap));
908 *enabled = !!(MLX5_GET(pcmr_reg, out, fcs_chk));
909 }
910
mlx5_query_mtpps(struct mlx5_core_dev * mdev,u32 * mtpps,u32 mtpps_size)911 int mlx5_query_mtpps(struct mlx5_core_dev *mdev, u32 *mtpps, u32 mtpps_size)
912 {
913 u32 in[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
914
915 return mlx5_core_access_reg(mdev, in, sizeof(in), mtpps,
916 mtpps_size, MLX5_REG_MTPPS, 0, 0);
917 }
918
mlx5_set_mtpps(struct mlx5_core_dev * mdev,u32 * mtpps,u32 mtpps_size)919 int mlx5_set_mtpps(struct mlx5_core_dev *mdev, u32 *mtpps, u32 mtpps_size)
920 {
921 u32 out[MLX5_ST_SZ_DW(mtpps_reg)] = {0};
922
923 return mlx5_core_access_reg(mdev, mtpps, mtpps_size, out,
924 sizeof(out), MLX5_REG_MTPPS, 0, 1);
925 }
926
mlx5_query_mtppse(struct mlx5_core_dev * mdev,u8 pin,u8 * arm,u8 * mode)927 int mlx5_query_mtppse(struct mlx5_core_dev *mdev, u8 pin, u8 *arm, u8 *mode)
928 {
929 u32 out[MLX5_ST_SZ_DW(mtppse_reg)] = {0};
930 u32 in[MLX5_ST_SZ_DW(mtppse_reg)] = {0};
931 int err = 0;
932
933 MLX5_SET(mtppse_reg, in, pin, pin);
934
935 err = mlx5_core_access_reg(mdev, in, sizeof(in), out,
936 sizeof(out), MLX5_REG_MTPPSE, 0, 0);
937 if (err)
938 return err;
939
940 *arm = MLX5_GET(mtppse_reg, in, event_arm);
941 *mode = MLX5_GET(mtppse_reg, in, event_generation_mode);
942
943 return err;
944 }
945
mlx5_set_mtppse(struct mlx5_core_dev * mdev,u8 pin,u8 arm,u8 mode)946 int mlx5_set_mtppse(struct mlx5_core_dev *mdev, u8 pin, u8 arm, u8 mode)
947 {
948 u32 out[MLX5_ST_SZ_DW(mtppse_reg)] = {0};
949 u32 in[MLX5_ST_SZ_DW(mtppse_reg)] = {0};
950
951 MLX5_SET(mtppse_reg, in, pin, pin);
952 MLX5_SET(mtppse_reg, in, event_arm, arm);
953 MLX5_SET(mtppse_reg, in, event_generation_mode, mode);
954
955 return mlx5_core_access_reg(mdev, in, sizeof(in), out,
956 sizeof(out), MLX5_REG_MTPPSE, 0, 1);
957 }
958
mlx5_set_trust_state(struct mlx5_core_dev * mdev,u8 trust_state)959 int mlx5_set_trust_state(struct mlx5_core_dev *mdev, u8 trust_state)
960 {
961 u32 out[MLX5_ST_SZ_DW(qpts_reg)] = {};
962 u32 in[MLX5_ST_SZ_DW(qpts_reg)] = {};
963 int err;
964
965 MLX5_SET(qpts_reg, in, local_port, 1);
966 MLX5_SET(qpts_reg, in, trust_state, trust_state);
967
968 err = mlx5_core_access_reg(mdev, in, sizeof(in), out,
969 sizeof(out), MLX5_REG_QPTS, 0, 1);
970 return err;
971 }
972
mlx5_query_trust_state(struct mlx5_core_dev * mdev,u8 * trust_state)973 int mlx5_query_trust_state(struct mlx5_core_dev *mdev, u8 *trust_state)
974 {
975 u32 out[MLX5_ST_SZ_DW(qpts_reg)] = {};
976 u32 in[MLX5_ST_SZ_DW(qpts_reg)] = {};
977 int err;
978
979 MLX5_SET(qpts_reg, in, local_port, 1);
980
981 err = mlx5_core_access_reg(mdev, in, sizeof(in), out,
982 sizeof(out), MLX5_REG_QPTS, 0, 0);
983 if (!err)
984 *trust_state = MLX5_GET(qpts_reg, out, trust_state);
985
986 return err;
987 }
988
mlx5_set_dscp2prio(struct mlx5_core_dev * mdev,u8 dscp,u8 prio)989 int mlx5_set_dscp2prio(struct mlx5_core_dev *mdev, u8 dscp, u8 prio)
990 {
991 int sz = MLX5_ST_SZ_BYTES(qpdpm_reg);
992 void *qpdpm_dscp;
993 void *out;
994 void *in;
995 int err;
996
997 in = kzalloc(sz, GFP_KERNEL);
998 out = kzalloc(sz, GFP_KERNEL);
999 if (!in || !out) {
1000 err = -ENOMEM;
1001 goto out;
1002 }
1003
1004 MLX5_SET(qpdpm_reg, in, local_port, 1);
1005 err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 0);
1006 if (err)
1007 goto out;
1008
1009 memcpy(in, out, sz);
1010 MLX5_SET(qpdpm_reg, in, local_port, 1);
1011
1012 /* Update the corresponding dscp entry */
1013 qpdpm_dscp = MLX5_ADDR_OF(qpdpm_reg, in, dscp[dscp]);
1014 MLX5_SET16(qpdpm_dscp_reg, qpdpm_dscp, prio, prio);
1015 MLX5_SET16(qpdpm_dscp_reg, qpdpm_dscp, e, 1);
1016 err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 1);
1017
1018 out:
1019 kfree(in);
1020 kfree(out);
1021 return err;
1022 }
1023
1024 /* dscp2prio[i]: priority that dscp i mapped to */
1025 #define MLX5E_SUPPORTED_DSCP 64
mlx5_query_dscp2prio(struct mlx5_core_dev * mdev,u8 * dscp2prio)1026 int mlx5_query_dscp2prio(struct mlx5_core_dev *mdev, u8 *dscp2prio)
1027 {
1028 int sz = MLX5_ST_SZ_BYTES(qpdpm_reg);
1029 void *qpdpm_dscp;
1030 void *out;
1031 void *in;
1032 int err;
1033 int i;
1034
1035 in = kzalloc(sz, GFP_KERNEL);
1036 out = kzalloc(sz, GFP_KERNEL);
1037 if (!in || !out) {
1038 err = -ENOMEM;
1039 goto out;
1040 }
1041
1042 MLX5_SET(qpdpm_reg, in, local_port, 1);
1043 err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 0);
1044 if (err)
1045 goto out;
1046
1047 for (i = 0; i < (MLX5E_SUPPORTED_DSCP); i++) {
1048 qpdpm_dscp = MLX5_ADDR_OF(qpdpm_reg, out, dscp[i]);
1049 dscp2prio[i] = MLX5_GET16(qpdpm_dscp_reg, qpdpm_dscp, prio);
1050 }
1051
1052 out:
1053 kfree(in);
1054 kfree(out);
1055 return err;
1056 }
1057