1 /*
2 * AMD 10Gb Ethernet driver
3 *
4 * This file is available to you under your choice of the following two
5 * licenses:
6 *
7 * License 1: GPLv2
8 *
9 * Copyright (c) 2016 Advanced Micro Devices, Inc.
10 *
11 * This file is free software; you may copy, redistribute and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This file is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 *
24 * This file incorporates work covered by the following copyright and
25 * permission notice:
26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
28 * Inc. unless otherwise expressly agreed to in writing between Synopsys
29 * and you.
30 *
31 * The Software IS NOT an item of Licensed Software or Licensed Product
32 * under any End User Software License Agreement or Agreement for Licensed
33 * Product with Synopsys or any supplement thereto. Permission is hereby
34 * granted, free of charge, to any person obtaining a copy of this software
35 * annotated with this license and the Software, to deal in the Software
36 * without restriction, including without limitation the rights to use,
37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
38 * of the Software, and to permit persons to whom the Software is furnished
39 * to do so, subject to the following conditions:
40 *
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
43 *
44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
54 * THE POSSIBILITY OF SUCH DAMAGE.
55 *
56 *
57 * License 2: Modified BSD
58 *
59 * Copyright (c) 2016 Advanced Micro Devices, Inc.
60 * All rights reserved.
61 *
62 * Redistribution and use in source and binary forms, with or without
63 * modification, are permitted provided that the following conditions are met:
64 * * Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 * * Redistributions in binary form must reproduce the above copyright
67 * notice, this list of conditions and the following disclaimer in the
68 * documentation and/or other materials provided with the distribution.
69 * * Neither the name of Advanced Micro Devices, Inc. nor the
70 * names of its contributors may be used to endorse or promote products
71 * derived from this software without specific prior written permission.
72 *
73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
83 *
84 * This file incorporates work covered by the following copyright and
85 * permission notice:
86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
88 * Inc. unless otherwise expressly agreed to in writing between Synopsys
89 * and you.
90 *
91 * The Software IS NOT an item of Licensed Software or Licensed Product
92 * under any End User Software License Agreement or Agreement for Licensed
93 * Product with Synopsys or any supplement thereto. Permission is hereby
94 * granted, free of charge, to any person obtaining a copy of this software
95 * annotated with this license and the Software, to deal in the Software
96 * without restriction, including without limitation the rights to use,
97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
98 * of the Software, and to permit persons to whom the Software is furnished
99 * to do so, subject to the following conditions:
100 *
101 * The above copyright notice and this permission notice shall be included
102 * in all copies or substantial portions of the Software.
103 *
104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
114 * THE POSSIBILITY OF SUCH DAMAGE.
115 */
116
117 #include <linux/module.h>
118 #include <linux/device.h>
119 #include <linux/kmod.h>
120 #include <linux/mdio.h>
121 #include <linux/phy.h>
122 #include <linux/ethtool.h>
123
124 #include "xgbe.h"
125 #include "xgbe-common.h"
126
127 #define XGBE_PHY_PORT_SPEED_100 BIT(0)
128 #define XGBE_PHY_PORT_SPEED_1000 BIT(1)
129 #define XGBE_PHY_PORT_SPEED_2500 BIT(2)
130 #define XGBE_PHY_PORT_SPEED_10000 BIT(3)
131
132 #define XGBE_MUTEX_RELEASE 0x80000000
133
134 #define XGBE_SFP_DIRECT 7
135
136 /* I2C target addresses */
137 #define XGBE_SFP_SERIAL_ID_ADDRESS 0x50
138 #define XGBE_SFP_DIAG_INFO_ADDRESS 0x51
139 #define XGBE_SFP_PHY_ADDRESS 0x56
140 #define XGBE_GPIO_ADDRESS_PCA9555 0x20
141
142 /* SFP sideband signal indicators */
143 #define XGBE_GPIO_NO_TX_FAULT BIT(0)
144 #define XGBE_GPIO_NO_RATE_SELECT BIT(1)
145 #define XGBE_GPIO_NO_MOD_ABSENT BIT(2)
146 #define XGBE_GPIO_NO_RX_LOS BIT(3)
147
148 /* Rate-change complete wait/retry count */
149 #define XGBE_RATECHANGE_COUNT 500
150
151 /* CDR delay values for KR support (in usec) */
152 #define XGBE_CDR_DELAY_INIT 10000
153 #define XGBE_CDR_DELAY_INC 10000
154 #define XGBE_CDR_DELAY_MAX 100000
155
156 /* RRC frequency during link status check */
157 #define XGBE_RRC_FREQUENCY 10
158
159 enum xgbe_port_mode {
160 XGBE_PORT_MODE_RSVD = 0,
161 XGBE_PORT_MODE_BACKPLANE,
162 XGBE_PORT_MODE_BACKPLANE_2500,
163 XGBE_PORT_MODE_1000BASE_T,
164 XGBE_PORT_MODE_1000BASE_X,
165 XGBE_PORT_MODE_NBASE_T,
166 XGBE_PORT_MODE_10GBASE_T,
167 XGBE_PORT_MODE_10GBASE_R,
168 XGBE_PORT_MODE_SFP,
169 XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG,
170 XGBE_PORT_MODE_MAX,
171 };
172
173 enum xgbe_conn_type {
174 XGBE_CONN_TYPE_NONE = 0,
175 XGBE_CONN_TYPE_SFP,
176 XGBE_CONN_TYPE_MDIO,
177 XGBE_CONN_TYPE_RSVD1,
178 XGBE_CONN_TYPE_BACKPLANE,
179 XGBE_CONN_TYPE_MAX,
180 };
181
182 /* SFP/SFP+ related definitions */
183 enum xgbe_sfp_comm {
184 XGBE_SFP_COMM_DIRECT = 0,
185 XGBE_SFP_COMM_PCA9545,
186 };
187
188 enum xgbe_sfp_cable {
189 XGBE_SFP_CABLE_UNKNOWN = 0,
190 XGBE_SFP_CABLE_ACTIVE,
191 XGBE_SFP_CABLE_PASSIVE,
192 XGBE_SFP_CABLE_FIBER,
193 };
194
195 enum xgbe_sfp_base {
196 XGBE_SFP_BASE_UNKNOWN = 0,
197 XGBE_SFP_BASE_1000_T,
198 XGBE_SFP_BASE_1000_SX,
199 XGBE_SFP_BASE_1000_LX,
200 XGBE_SFP_BASE_1000_CX,
201 XGBE_SFP_BASE_10000_SR,
202 XGBE_SFP_BASE_10000_LR,
203 XGBE_SFP_BASE_10000_LRM,
204 XGBE_SFP_BASE_10000_ER,
205 XGBE_SFP_BASE_10000_CR,
206 };
207
208 enum xgbe_sfp_speed {
209 XGBE_SFP_SPEED_UNKNOWN = 0,
210 XGBE_SFP_SPEED_100_1000,
211 XGBE_SFP_SPEED_1000,
212 XGBE_SFP_SPEED_10000,
213 };
214
215 /* SFP Serial ID Base ID values relative to an offset of 0 */
216 #define XGBE_SFP_BASE_ID 0
217 #define XGBE_SFP_ID_SFP 0x03
218
219 #define XGBE_SFP_BASE_EXT_ID 1
220 #define XGBE_SFP_EXT_ID_SFP 0x04
221
222 #define XGBE_SFP_BASE_10GBE_CC 3
223 #define XGBE_SFP_BASE_10GBE_CC_SR BIT(4)
224 #define XGBE_SFP_BASE_10GBE_CC_LR BIT(5)
225 #define XGBE_SFP_BASE_10GBE_CC_LRM BIT(6)
226 #define XGBE_SFP_BASE_10GBE_CC_ER BIT(7)
227
228 #define XGBE_SFP_BASE_1GBE_CC 6
229 #define XGBE_SFP_BASE_1GBE_CC_SX BIT(0)
230 #define XGBE_SFP_BASE_1GBE_CC_LX BIT(1)
231 #define XGBE_SFP_BASE_1GBE_CC_CX BIT(2)
232 #define XGBE_SFP_BASE_1GBE_CC_T BIT(3)
233
234 #define XGBE_SFP_BASE_CABLE 8
235 #define XGBE_SFP_BASE_CABLE_PASSIVE BIT(2)
236 #define XGBE_SFP_BASE_CABLE_ACTIVE BIT(3)
237
238 #define XGBE_SFP_BASE_BR 12
239 #define XGBE_SFP_BASE_BR_1GBE_MIN 0x0a
240 #define XGBE_SFP_BASE_BR_10GBE_MIN 0x64
241
242 #define XGBE_SFP_BASE_CU_CABLE_LEN 18
243
244 #define XGBE_SFP_BASE_VENDOR_NAME 20
245 #define XGBE_SFP_BASE_VENDOR_NAME_LEN 16
246 #define XGBE_SFP_BASE_VENDOR_PN 40
247 #define XGBE_SFP_BASE_VENDOR_PN_LEN 16
248 #define XGBE_SFP_BASE_VENDOR_REV 56
249 #define XGBE_SFP_BASE_VENDOR_REV_LEN 4
250
251 #define XGBE_SFP_BASE_CC 63
252
253 /* SFP Serial ID Extended ID values relative to an offset of 64 */
254 #define XGBE_SFP_BASE_VENDOR_SN 4
255 #define XGBE_SFP_BASE_VENDOR_SN_LEN 16
256
257 #define XGBE_SFP_EXTD_OPT1 1
258 #define XGBE_SFP_EXTD_OPT1_RX_LOS BIT(1)
259 #define XGBE_SFP_EXTD_OPT1_TX_FAULT BIT(3)
260
261 #define XGBE_SFP_EXTD_DIAG 28
262 #define XGBE_SFP_EXTD_DIAG_ADDR_CHANGE BIT(2)
263
264 #define XGBE_SFP_EXTD_SFF_8472 30
265
266 #define XGBE_SFP_EXTD_CC 31
267
268 struct xgbe_sfp_eeprom {
269 u8 base[64];
270 u8 extd[32];
271 u8 vendor[32];
272 };
273
274 #define XGBE_SFP_DIAGS_SUPPORTED(_x) \
275 ((_x)->extd[XGBE_SFP_EXTD_SFF_8472] && \
276 !((_x)->extd[XGBE_SFP_EXTD_DIAG] & XGBE_SFP_EXTD_DIAG_ADDR_CHANGE))
277
278 #define XGBE_SFP_EEPROM_BASE_LEN 256
279 #define XGBE_SFP_EEPROM_DIAG_LEN 256
280 #define XGBE_SFP_EEPROM_MAX (XGBE_SFP_EEPROM_BASE_LEN + \
281 XGBE_SFP_EEPROM_DIAG_LEN)
282
283 #define XGBE_BEL_FUSE_VENDOR "BEL-FUSE "
284 #define XGBE_BEL_FUSE_PARTNO "1GBT-SFP06 "
285
286 #define XGBE_MOLEX_VENDOR "Molex Inc. "
287
288 struct xgbe_sfp_ascii {
289 union {
290 char vendor[XGBE_SFP_BASE_VENDOR_NAME_LEN + 1];
291 char partno[XGBE_SFP_BASE_VENDOR_PN_LEN + 1];
292 char rev[XGBE_SFP_BASE_VENDOR_REV_LEN + 1];
293 char serno[XGBE_SFP_BASE_VENDOR_SN_LEN + 1];
294 } u;
295 };
296
297 /* MDIO PHY reset types */
298 enum xgbe_mdio_reset {
299 XGBE_MDIO_RESET_NONE = 0,
300 XGBE_MDIO_RESET_I2C_GPIO,
301 XGBE_MDIO_RESET_INT_GPIO,
302 XGBE_MDIO_RESET_MAX,
303 };
304
305 /* Re-driver related definitions */
306 enum xgbe_phy_redrv_if {
307 XGBE_PHY_REDRV_IF_MDIO = 0,
308 XGBE_PHY_REDRV_IF_I2C,
309 XGBE_PHY_REDRV_IF_MAX,
310 };
311
312 enum xgbe_phy_redrv_model {
313 XGBE_PHY_REDRV_MODEL_4223 = 0,
314 XGBE_PHY_REDRV_MODEL_4227,
315 XGBE_PHY_REDRV_MODEL_MAX,
316 };
317
318 enum xgbe_phy_redrv_mode {
319 XGBE_PHY_REDRV_MODE_CX = 5,
320 XGBE_PHY_REDRV_MODE_SR = 9,
321 };
322
323 #define XGBE_PHY_REDRV_MODE_REG 0x12b0
324
325 /* PHY related configuration information */
326 struct xgbe_phy_data {
327 enum xgbe_port_mode port_mode;
328
329 unsigned int port_id;
330
331 unsigned int port_speeds;
332
333 enum xgbe_conn_type conn_type;
334
335 enum xgbe_mode cur_mode;
336 enum xgbe_mode start_mode;
337
338 unsigned int rrc_count;
339
340 unsigned int mdio_addr;
341
342 /* SFP Support */
343 enum xgbe_sfp_comm sfp_comm;
344 unsigned int sfp_mux_address;
345 unsigned int sfp_mux_channel;
346
347 unsigned int sfp_gpio_address;
348 unsigned int sfp_gpio_mask;
349 unsigned int sfp_gpio_inputs;
350 unsigned int sfp_gpio_rx_los;
351 unsigned int sfp_gpio_tx_fault;
352 unsigned int sfp_gpio_mod_absent;
353 unsigned int sfp_gpio_rate_select;
354
355 unsigned int sfp_rx_los;
356 unsigned int sfp_tx_fault;
357 unsigned int sfp_mod_absent;
358 unsigned int sfp_changed;
359 unsigned int sfp_phy_avail;
360 unsigned int sfp_cable_len;
361 enum xgbe_sfp_base sfp_base;
362 enum xgbe_sfp_cable sfp_cable;
363 enum xgbe_sfp_speed sfp_speed;
364 struct xgbe_sfp_eeprom sfp_eeprom;
365
366 /* External PHY support */
367 enum xgbe_mdio_mode phydev_mode;
368 struct mii_bus *mii;
369 struct phy_device *phydev;
370 enum xgbe_mdio_reset mdio_reset;
371 unsigned int mdio_reset_addr;
372 unsigned int mdio_reset_gpio;
373
374 /* Re-driver support */
375 unsigned int redrv;
376 unsigned int redrv_if;
377 unsigned int redrv_addr;
378 unsigned int redrv_lane;
379 unsigned int redrv_model;
380
381 /* KR AN support */
382 unsigned int phy_cdr_notrack;
383 unsigned int phy_cdr_delay;
384 };
385
386 /* I2C, MDIO and GPIO lines are muxed, so only one device at a time */
387 static DEFINE_MUTEX(xgbe_phy_comm_lock);
388
389 static enum xgbe_an_mode xgbe_phy_an_mode(struct xgbe_prv_data *pdata);
390
xgbe_phy_i2c_xfer(struct xgbe_prv_data * pdata,struct xgbe_i2c_op * i2c_op)391 static int xgbe_phy_i2c_xfer(struct xgbe_prv_data *pdata,
392 struct xgbe_i2c_op *i2c_op)
393 {
394 return pdata->i2c_if.i2c_xfer(pdata, i2c_op);
395 }
396
xgbe_phy_redrv_write(struct xgbe_prv_data * pdata,unsigned int reg,unsigned int val)397 static int xgbe_phy_redrv_write(struct xgbe_prv_data *pdata, unsigned int reg,
398 unsigned int val)
399 {
400 struct xgbe_phy_data *phy_data = pdata->phy_data;
401 struct xgbe_i2c_op i2c_op;
402 __be16 *redrv_val;
403 u8 redrv_data[5], csum;
404 unsigned int i, retry;
405 int ret;
406
407 /* High byte of register contains read/write indicator */
408 redrv_data[0] = ((reg >> 8) & 0xff) << 1;
409 redrv_data[1] = reg & 0xff;
410 redrv_val = (__be16 *)&redrv_data[2];
411 *redrv_val = cpu_to_be16(val);
412
413 /* Calculate 1 byte checksum */
414 csum = 0;
415 for (i = 0; i < 4; i++) {
416 csum += redrv_data[i];
417 if (redrv_data[i] > csum)
418 csum++;
419 }
420 redrv_data[4] = ~csum;
421
422 retry = 1;
423 again1:
424 i2c_op.cmd = XGBE_I2C_CMD_WRITE;
425 i2c_op.target = phy_data->redrv_addr;
426 i2c_op.len = sizeof(redrv_data);
427 i2c_op.buf = redrv_data;
428 ret = xgbe_phy_i2c_xfer(pdata, &i2c_op);
429 if (ret) {
430 if ((ret == -EAGAIN) && retry--)
431 goto again1;
432
433 return ret;
434 }
435
436 retry = 1;
437 again2:
438 i2c_op.cmd = XGBE_I2C_CMD_READ;
439 i2c_op.target = phy_data->redrv_addr;
440 i2c_op.len = 1;
441 i2c_op.buf = redrv_data;
442 ret = xgbe_phy_i2c_xfer(pdata, &i2c_op);
443 if (ret) {
444 if ((ret == -EAGAIN) && retry--)
445 goto again2;
446
447 return ret;
448 }
449
450 if (redrv_data[0] != 0xff) {
451 netif_dbg(pdata, drv, pdata->netdev,
452 "Redriver write checksum error\n");
453 ret = -EIO;
454 }
455
456 return ret;
457 }
458
xgbe_phy_i2c_write(struct xgbe_prv_data * pdata,unsigned int target,void * val,unsigned int val_len)459 static int xgbe_phy_i2c_write(struct xgbe_prv_data *pdata, unsigned int target,
460 void *val, unsigned int val_len)
461 {
462 struct xgbe_i2c_op i2c_op;
463 int retry, ret;
464
465 retry = 1;
466 again:
467 /* Write the specfied register */
468 i2c_op.cmd = XGBE_I2C_CMD_WRITE;
469 i2c_op.target = target;
470 i2c_op.len = val_len;
471 i2c_op.buf = val;
472 ret = xgbe_phy_i2c_xfer(pdata, &i2c_op);
473 if ((ret == -EAGAIN) && retry--)
474 goto again;
475
476 return ret;
477 }
478
xgbe_phy_i2c_read(struct xgbe_prv_data * pdata,unsigned int target,void * reg,unsigned int reg_len,void * val,unsigned int val_len)479 static int xgbe_phy_i2c_read(struct xgbe_prv_data *pdata, unsigned int target,
480 void *reg, unsigned int reg_len,
481 void *val, unsigned int val_len)
482 {
483 struct xgbe_i2c_op i2c_op;
484 int retry, ret;
485
486 retry = 1;
487 again1:
488 /* Set the specified register to read */
489 i2c_op.cmd = XGBE_I2C_CMD_WRITE;
490 i2c_op.target = target;
491 i2c_op.len = reg_len;
492 i2c_op.buf = reg;
493 ret = xgbe_phy_i2c_xfer(pdata, &i2c_op);
494 if (ret) {
495 if ((ret == -EAGAIN) && retry--)
496 goto again1;
497
498 return ret;
499 }
500
501 retry = 1;
502 again2:
503 /* Read the specfied register */
504 i2c_op.cmd = XGBE_I2C_CMD_READ;
505 i2c_op.target = target;
506 i2c_op.len = val_len;
507 i2c_op.buf = val;
508 ret = xgbe_phy_i2c_xfer(pdata, &i2c_op);
509 if ((ret == -EAGAIN) && retry--)
510 goto again2;
511
512 return ret;
513 }
514
xgbe_phy_sfp_put_mux(struct xgbe_prv_data * pdata)515 static int xgbe_phy_sfp_put_mux(struct xgbe_prv_data *pdata)
516 {
517 struct xgbe_phy_data *phy_data = pdata->phy_data;
518 struct xgbe_i2c_op i2c_op;
519 u8 mux_channel;
520
521 if (phy_data->sfp_comm == XGBE_SFP_COMM_DIRECT)
522 return 0;
523
524 /* Select no mux channels */
525 mux_channel = 0;
526 i2c_op.cmd = XGBE_I2C_CMD_WRITE;
527 i2c_op.target = phy_data->sfp_mux_address;
528 i2c_op.len = sizeof(mux_channel);
529 i2c_op.buf = &mux_channel;
530
531 return xgbe_phy_i2c_xfer(pdata, &i2c_op);
532 }
533
xgbe_phy_sfp_get_mux(struct xgbe_prv_data * pdata)534 static int xgbe_phy_sfp_get_mux(struct xgbe_prv_data *pdata)
535 {
536 struct xgbe_phy_data *phy_data = pdata->phy_data;
537 struct xgbe_i2c_op i2c_op;
538 u8 mux_channel;
539
540 if (phy_data->sfp_comm == XGBE_SFP_COMM_DIRECT)
541 return 0;
542
543 /* Select desired mux channel */
544 mux_channel = 1 << phy_data->sfp_mux_channel;
545 i2c_op.cmd = XGBE_I2C_CMD_WRITE;
546 i2c_op.target = phy_data->sfp_mux_address;
547 i2c_op.len = sizeof(mux_channel);
548 i2c_op.buf = &mux_channel;
549
550 return xgbe_phy_i2c_xfer(pdata, &i2c_op);
551 }
552
xgbe_phy_put_comm_ownership(struct xgbe_prv_data * pdata)553 static void xgbe_phy_put_comm_ownership(struct xgbe_prv_data *pdata)
554 {
555 mutex_unlock(&xgbe_phy_comm_lock);
556 }
557
xgbe_phy_get_comm_ownership(struct xgbe_prv_data * pdata)558 static int xgbe_phy_get_comm_ownership(struct xgbe_prv_data *pdata)
559 {
560 struct xgbe_phy_data *phy_data = pdata->phy_data;
561 unsigned long timeout;
562 unsigned int mutex_id;
563
564 /* The I2C and MDIO/GPIO bus is multiplexed between multiple devices,
565 * the driver needs to take the software mutex and then the hardware
566 * mutexes before being able to use the busses.
567 */
568 mutex_lock(&xgbe_phy_comm_lock);
569
570 /* Clear the mutexes */
571 XP_IOWRITE(pdata, XP_I2C_MUTEX, XGBE_MUTEX_RELEASE);
572 XP_IOWRITE(pdata, XP_MDIO_MUTEX, XGBE_MUTEX_RELEASE);
573
574 /* Mutex formats are the same for I2C and MDIO/GPIO */
575 mutex_id = 0;
576 XP_SET_BITS(mutex_id, XP_I2C_MUTEX, ID, phy_data->port_id);
577 XP_SET_BITS(mutex_id, XP_I2C_MUTEX, ACTIVE, 1);
578
579 timeout = jiffies + (5 * HZ);
580 while (time_before(jiffies, timeout)) {
581 /* Must be all zeroes in order to obtain the mutex */
582 if (XP_IOREAD(pdata, XP_I2C_MUTEX) ||
583 XP_IOREAD(pdata, XP_MDIO_MUTEX)) {
584 usleep_range(100, 200);
585 continue;
586 }
587
588 /* Obtain the mutex */
589 XP_IOWRITE(pdata, XP_I2C_MUTEX, mutex_id);
590 XP_IOWRITE(pdata, XP_MDIO_MUTEX, mutex_id);
591
592 return 0;
593 }
594
595 mutex_unlock(&xgbe_phy_comm_lock);
596
597 netdev_err(pdata->netdev, "unable to obtain hardware mutexes\n");
598
599 return -ETIMEDOUT;
600 }
601
xgbe_phy_mdio_mii_write(struct xgbe_prv_data * pdata,int addr,int reg,u16 val)602 static int xgbe_phy_mdio_mii_write(struct xgbe_prv_data *pdata, int addr,
603 int reg, u16 val)
604 {
605 struct xgbe_phy_data *phy_data = pdata->phy_data;
606
607 if (reg & MII_ADDR_C45) {
608 if (phy_data->phydev_mode != XGBE_MDIO_MODE_CL45)
609 return -ENOTSUPP;
610 } else {
611 if (phy_data->phydev_mode != XGBE_MDIO_MODE_CL22)
612 return -ENOTSUPP;
613 }
614
615 return pdata->hw_if.write_ext_mii_regs(pdata, addr, reg, val);
616 }
617
xgbe_phy_i2c_mii_write(struct xgbe_prv_data * pdata,int reg,u16 val)618 static int xgbe_phy_i2c_mii_write(struct xgbe_prv_data *pdata, int reg, u16 val)
619 {
620 __be16 *mii_val;
621 u8 mii_data[3];
622 int ret;
623
624 ret = xgbe_phy_sfp_get_mux(pdata);
625 if (ret)
626 return ret;
627
628 mii_data[0] = reg & 0xff;
629 mii_val = (__be16 *)&mii_data[1];
630 *mii_val = cpu_to_be16(val);
631
632 ret = xgbe_phy_i2c_write(pdata, XGBE_SFP_PHY_ADDRESS,
633 mii_data, sizeof(mii_data));
634
635 xgbe_phy_sfp_put_mux(pdata);
636
637 return ret;
638 }
639
xgbe_phy_mii_write(struct mii_bus * mii,int addr,int reg,u16 val)640 static int xgbe_phy_mii_write(struct mii_bus *mii, int addr, int reg, u16 val)
641 {
642 struct xgbe_prv_data *pdata = mii->priv;
643 struct xgbe_phy_data *phy_data = pdata->phy_data;
644 int ret;
645
646 ret = xgbe_phy_get_comm_ownership(pdata);
647 if (ret)
648 return ret;
649
650 if (phy_data->conn_type == XGBE_CONN_TYPE_SFP)
651 ret = xgbe_phy_i2c_mii_write(pdata, reg, val);
652 else if (phy_data->conn_type & XGBE_CONN_TYPE_MDIO)
653 ret = xgbe_phy_mdio_mii_write(pdata, addr, reg, val);
654 else
655 ret = -ENOTSUPP;
656
657 xgbe_phy_put_comm_ownership(pdata);
658
659 return ret;
660 }
661
xgbe_phy_mdio_mii_read(struct xgbe_prv_data * pdata,int addr,int reg)662 static int xgbe_phy_mdio_mii_read(struct xgbe_prv_data *pdata, int addr,
663 int reg)
664 {
665 struct xgbe_phy_data *phy_data = pdata->phy_data;
666
667 if (reg & MII_ADDR_C45) {
668 if (phy_data->phydev_mode != XGBE_MDIO_MODE_CL45)
669 return -ENOTSUPP;
670 } else {
671 if (phy_data->phydev_mode != XGBE_MDIO_MODE_CL22)
672 return -ENOTSUPP;
673 }
674
675 return pdata->hw_if.read_ext_mii_regs(pdata, addr, reg);
676 }
677
xgbe_phy_i2c_mii_read(struct xgbe_prv_data * pdata,int reg)678 static int xgbe_phy_i2c_mii_read(struct xgbe_prv_data *pdata, int reg)
679 {
680 __be16 mii_val;
681 u8 mii_reg;
682 int ret;
683
684 ret = xgbe_phy_sfp_get_mux(pdata);
685 if (ret)
686 return ret;
687
688 mii_reg = reg;
689 ret = xgbe_phy_i2c_read(pdata, XGBE_SFP_PHY_ADDRESS,
690 &mii_reg, sizeof(mii_reg),
691 &mii_val, sizeof(mii_val));
692 if (!ret)
693 ret = be16_to_cpu(mii_val);
694
695 xgbe_phy_sfp_put_mux(pdata);
696
697 return ret;
698 }
699
xgbe_phy_mii_read(struct mii_bus * mii,int addr,int reg)700 static int xgbe_phy_mii_read(struct mii_bus *mii, int addr, int reg)
701 {
702 struct xgbe_prv_data *pdata = mii->priv;
703 struct xgbe_phy_data *phy_data = pdata->phy_data;
704 int ret;
705
706 ret = xgbe_phy_get_comm_ownership(pdata);
707 if (ret)
708 return ret;
709
710 if (phy_data->conn_type == XGBE_CONN_TYPE_SFP)
711 ret = xgbe_phy_i2c_mii_read(pdata, reg);
712 else if (phy_data->conn_type & XGBE_CONN_TYPE_MDIO)
713 ret = xgbe_phy_mdio_mii_read(pdata, addr, reg);
714 else
715 ret = -ENOTSUPP;
716
717 xgbe_phy_put_comm_ownership(pdata);
718
719 return ret;
720 }
721
xgbe_phy_sfp_phy_settings(struct xgbe_prv_data * pdata)722 static void xgbe_phy_sfp_phy_settings(struct xgbe_prv_data *pdata)
723 {
724 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
725 struct xgbe_phy_data *phy_data = pdata->phy_data;
726
727 if (!phy_data->sfp_mod_absent && !phy_data->sfp_changed)
728 return;
729
730 XGBE_ZERO_SUP(lks);
731
732 if (phy_data->sfp_mod_absent) {
733 pdata->phy.speed = SPEED_UNKNOWN;
734 pdata->phy.duplex = DUPLEX_UNKNOWN;
735 pdata->phy.autoneg = AUTONEG_ENABLE;
736 pdata->phy.pause_autoneg = AUTONEG_ENABLE;
737
738 XGBE_SET_SUP(lks, Autoneg);
739 XGBE_SET_SUP(lks, Pause);
740 XGBE_SET_SUP(lks, Asym_Pause);
741 XGBE_SET_SUP(lks, TP);
742 XGBE_SET_SUP(lks, FIBRE);
743
744 XGBE_LM_COPY(lks, advertising, lks, supported);
745
746 return;
747 }
748
749 switch (phy_data->sfp_base) {
750 case XGBE_SFP_BASE_1000_T:
751 case XGBE_SFP_BASE_1000_SX:
752 case XGBE_SFP_BASE_1000_LX:
753 case XGBE_SFP_BASE_1000_CX:
754 pdata->phy.speed = SPEED_UNKNOWN;
755 pdata->phy.duplex = DUPLEX_UNKNOWN;
756 pdata->phy.autoneg = AUTONEG_ENABLE;
757 pdata->phy.pause_autoneg = AUTONEG_ENABLE;
758 XGBE_SET_SUP(lks, Autoneg);
759 XGBE_SET_SUP(lks, Pause);
760 XGBE_SET_SUP(lks, Asym_Pause);
761 if (phy_data->sfp_base == XGBE_SFP_BASE_1000_T) {
762 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100)
763 XGBE_SET_SUP(lks, 100baseT_Full);
764 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000)
765 XGBE_SET_SUP(lks, 1000baseT_Full);
766 } else {
767 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000)
768 XGBE_SET_SUP(lks, 1000baseX_Full);
769 }
770 break;
771 case XGBE_SFP_BASE_10000_SR:
772 case XGBE_SFP_BASE_10000_LR:
773 case XGBE_SFP_BASE_10000_LRM:
774 case XGBE_SFP_BASE_10000_ER:
775 case XGBE_SFP_BASE_10000_CR:
776 pdata->phy.speed = SPEED_10000;
777 pdata->phy.duplex = DUPLEX_FULL;
778 pdata->phy.autoneg = AUTONEG_DISABLE;
779 pdata->phy.pause_autoneg = AUTONEG_DISABLE;
780 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000) {
781 switch (phy_data->sfp_base) {
782 case XGBE_SFP_BASE_10000_SR:
783 XGBE_SET_SUP(lks, 10000baseSR_Full);
784 break;
785 case XGBE_SFP_BASE_10000_LR:
786 XGBE_SET_SUP(lks, 10000baseLR_Full);
787 break;
788 case XGBE_SFP_BASE_10000_LRM:
789 XGBE_SET_SUP(lks, 10000baseLRM_Full);
790 break;
791 case XGBE_SFP_BASE_10000_ER:
792 XGBE_SET_SUP(lks, 10000baseER_Full);
793 break;
794 case XGBE_SFP_BASE_10000_CR:
795 XGBE_SET_SUP(lks, 10000baseCR_Full);
796 break;
797 default:
798 break;
799 }
800 }
801 break;
802 default:
803 pdata->phy.speed = SPEED_UNKNOWN;
804 pdata->phy.duplex = DUPLEX_UNKNOWN;
805 pdata->phy.autoneg = AUTONEG_DISABLE;
806 pdata->phy.pause_autoneg = AUTONEG_DISABLE;
807 break;
808 }
809
810 switch (phy_data->sfp_base) {
811 case XGBE_SFP_BASE_1000_T:
812 case XGBE_SFP_BASE_1000_CX:
813 case XGBE_SFP_BASE_10000_CR:
814 XGBE_SET_SUP(lks, TP);
815 break;
816 default:
817 XGBE_SET_SUP(lks, FIBRE);
818 break;
819 }
820
821 XGBE_LM_COPY(lks, advertising, lks, supported);
822 }
823
xgbe_phy_sfp_bit_rate(struct xgbe_sfp_eeprom * sfp_eeprom,enum xgbe_sfp_speed sfp_speed)824 static bool xgbe_phy_sfp_bit_rate(struct xgbe_sfp_eeprom *sfp_eeprom,
825 enum xgbe_sfp_speed sfp_speed)
826 {
827 u8 *sfp_base, min;
828
829 sfp_base = sfp_eeprom->base;
830
831 switch (sfp_speed) {
832 case XGBE_SFP_SPEED_1000:
833 min = XGBE_SFP_BASE_BR_1GBE_MIN;
834 break;
835 case XGBE_SFP_SPEED_10000:
836 min = XGBE_SFP_BASE_BR_10GBE_MIN;
837 break;
838 default:
839 return false;
840 }
841
842 return sfp_base[XGBE_SFP_BASE_BR] >= min;
843 }
844
xgbe_phy_free_phy_device(struct xgbe_prv_data * pdata)845 static void xgbe_phy_free_phy_device(struct xgbe_prv_data *pdata)
846 {
847 struct xgbe_phy_data *phy_data = pdata->phy_data;
848
849 if (phy_data->phydev) {
850 phy_detach(phy_data->phydev);
851 phy_device_remove(phy_data->phydev);
852 phy_device_free(phy_data->phydev);
853 phy_data->phydev = NULL;
854 }
855 }
856
xgbe_phy_finisar_phy_quirks(struct xgbe_prv_data * pdata)857 static bool xgbe_phy_finisar_phy_quirks(struct xgbe_prv_data *pdata)
858 {
859 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
860 struct xgbe_phy_data *phy_data = pdata->phy_data;
861 unsigned int phy_id = phy_data->phydev->phy_id;
862
863 if (phy_data->port_mode != XGBE_PORT_MODE_SFP)
864 return false;
865
866 if ((phy_id & 0xfffffff0) != 0x01ff0cc0)
867 return false;
868
869 /* Enable Base-T AN */
870 phy_write(phy_data->phydev, 0x16, 0x0001);
871 phy_write(phy_data->phydev, 0x00, 0x9140);
872 phy_write(phy_data->phydev, 0x16, 0x0000);
873
874 /* Enable SGMII at 100Base-T/1000Base-T Full Duplex */
875 phy_write(phy_data->phydev, 0x1b, 0x9084);
876 phy_write(phy_data->phydev, 0x09, 0x0e00);
877 phy_write(phy_data->phydev, 0x00, 0x8140);
878 phy_write(phy_data->phydev, 0x04, 0x0d01);
879 phy_write(phy_data->phydev, 0x00, 0x9140);
880
881 linkmode_set_bit_array(phy_10_100_features_array,
882 ARRAY_SIZE(phy_10_100_features_array),
883 supported);
884 linkmode_set_bit_array(phy_gbit_features_array,
885 ARRAY_SIZE(phy_gbit_features_array),
886 supported);
887
888 linkmode_copy(phy_data->phydev->supported, supported);
889
890 phy_support_asym_pause(phy_data->phydev);
891
892 netif_dbg(pdata, drv, pdata->netdev,
893 "Finisar PHY quirk in place\n");
894
895 return true;
896 }
897
xgbe_phy_belfuse_phy_quirks(struct xgbe_prv_data * pdata)898 static bool xgbe_phy_belfuse_phy_quirks(struct xgbe_prv_data *pdata)
899 {
900 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
901 struct xgbe_phy_data *phy_data = pdata->phy_data;
902 struct xgbe_sfp_eeprom *sfp_eeprom = &phy_data->sfp_eeprom;
903 unsigned int phy_id = phy_data->phydev->phy_id;
904 int reg;
905
906 if (phy_data->port_mode != XGBE_PORT_MODE_SFP)
907 return false;
908
909 if (memcmp(&sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_NAME],
910 XGBE_BEL_FUSE_VENDOR, XGBE_SFP_BASE_VENDOR_NAME_LEN))
911 return false;
912
913 /* For Bel-Fuse, use the extra AN flag */
914 pdata->an_again = 1;
915
916 if (memcmp(&sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_PN],
917 XGBE_BEL_FUSE_PARTNO, XGBE_SFP_BASE_VENDOR_PN_LEN))
918 return false;
919
920 if ((phy_id & 0xfffffff0) != 0x03625d10)
921 return false;
922
923 /* Reset PHY - wait for self-clearing reset bit to clear */
924 genphy_soft_reset(phy_data->phydev);
925
926 /* Disable RGMII mode */
927 phy_write(phy_data->phydev, 0x18, 0x7007);
928 reg = phy_read(phy_data->phydev, 0x18);
929 phy_write(phy_data->phydev, 0x18, reg & ~0x0080);
930
931 /* Enable fiber register bank */
932 phy_write(phy_data->phydev, 0x1c, 0x7c00);
933 reg = phy_read(phy_data->phydev, 0x1c);
934 reg &= 0x03ff;
935 reg &= ~0x0001;
936 phy_write(phy_data->phydev, 0x1c, 0x8000 | 0x7c00 | reg | 0x0001);
937
938 /* Power down SerDes */
939 reg = phy_read(phy_data->phydev, 0x00);
940 phy_write(phy_data->phydev, 0x00, reg | 0x00800);
941
942 /* Configure SGMII-to-Copper mode */
943 phy_write(phy_data->phydev, 0x1c, 0x7c00);
944 reg = phy_read(phy_data->phydev, 0x1c);
945 reg &= 0x03ff;
946 reg &= ~0x0006;
947 phy_write(phy_data->phydev, 0x1c, 0x8000 | 0x7c00 | reg | 0x0004);
948
949 /* Power up SerDes */
950 reg = phy_read(phy_data->phydev, 0x00);
951 phy_write(phy_data->phydev, 0x00, reg & ~0x00800);
952
953 /* Enable copper register bank */
954 phy_write(phy_data->phydev, 0x1c, 0x7c00);
955 reg = phy_read(phy_data->phydev, 0x1c);
956 reg &= 0x03ff;
957 reg &= ~0x0001;
958 phy_write(phy_data->phydev, 0x1c, 0x8000 | 0x7c00 | reg);
959
960 /* Power up SerDes */
961 reg = phy_read(phy_data->phydev, 0x00);
962 phy_write(phy_data->phydev, 0x00, reg & ~0x00800);
963
964 linkmode_set_bit_array(phy_10_100_features_array,
965 ARRAY_SIZE(phy_10_100_features_array),
966 supported);
967 linkmode_set_bit_array(phy_gbit_features_array,
968 ARRAY_SIZE(phy_gbit_features_array),
969 supported);
970 linkmode_copy(phy_data->phydev->supported, supported);
971 phy_support_asym_pause(phy_data->phydev);
972
973 netif_dbg(pdata, drv, pdata->netdev,
974 "BelFuse PHY quirk in place\n");
975
976 return true;
977 }
978
xgbe_phy_external_phy_quirks(struct xgbe_prv_data * pdata)979 static void xgbe_phy_external_phy_quirks(struct xgbe_prv_data *pdata)
980 {
981 if (xgbe_phy_belfuse_phy_quirks(pdata))
982 return;
983
984 if (xgbe_phy_finisar_phy_quirks(pdata))
985 return;
986 }
987
xgbe_phy_find_phy_device(struct xgbe_prv_data * pdata)988 static int xgbe_phy_find_phy_device(struct xgbe_prv_data *pdata)
989 {
990 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
991 struct xgbe_phy_data *phy_data = pdata->phy_data;
992 struct phy_device *phydev;
993 int ret;
994
995 /* If we already have a PHY, just return */
996 if (phy_data->phydev)
997 return 0;
998
999 /* Clear the extra AN flag */
1000 pdata->an_again = 0;
1001
1002 /* Check for the use of an external PHY */
1003 if (phy_data->phydev_mode == XGBE_MDIO_MODE_NONE)
1004 return 0;
1005
1006 /* For SFP, only use an external PHY if available */
1007 if ((phy_data->port_mode == XGBE_PORT_MODE_SFP) &&
1008 !phy_data->sfp_phy_avail)
1009 return 0;
1010
1011 /* Set the proper MDIO mode for the PHY */
1012 ret = pdata->hw_if.set_ext_mii_mode(pdata, phy_data->mdio_addr,
1013 phy_data->phydev_mode);
1014 if (ret) {
1015 netdev_err(pdata->netdev,
1016 "mdio port/clause not compatible (%u/%u)\n",
1017 phy_data->mdio_addr, phy_data->phydev_mode);
1018 return ret;
1019 }
1020
1021 /* Create and connect to the PHY device */
1022 phydev = get_phy_device(phy_data->mii, phy_data->mdio_addr,
1023 (phy_data->phydev_mode == XGBE_MDIO_MODE_CL45));
1024 if (IS_ERR(phydev)) {
1025 netdev_err(pdata->netdev, "get_phy_device failed\n");
1026 return -ENODEV;
1027 }
1028 netif_dbg(pdata, drv, pdata->netdev, "external PHY id is %#010x\n",
1029 phydev->phy_id);
1030
1031 /*TODO: If c45, add request_module based on one of the MMD ids? */
1032
1033 ret = phy_device_register(phydev);
1034 if (ret) {
1035 netdev_err(pdata->netdev, "phy_device_register failed\n");
1036 phy_device_free(phydev);
1037 return ret;
1038 }
1039
1040 ret = phy_attach_direct(pdata->netdev, phydev, phydev->dev_flags,
1041 PHY_INTERFACE_MODE_SGMII);
1042 if (ret) {
1043 netdev_err(pdata->netdev, "phy_attach_direct failed\n");
1044 phy_device_remove(phydev);
1045 phy_device_free(phydev);
1046 return ret;
1047 }
1048 phy_data->phydev = phydev;
1049
1050 xgbe_phy_external_phy_quirks(pdata);
1051
1052 linkmode_and(phydev->advertising, phydev->advertising,
1053 lks->link_modes.advertising);
1054
1055 phy_start_aneg(phy_data->phydev);
1056
1057 return 0;
1058 }
1059
xgbe_phy_sfp_external_phy(struct xgbe_prv_data * pdata)1060 static void xgbe_phy_sfp_external_phy(struct xgbe_prv_data *pdata)
1061 {
1062 struct xgbe_phy_data *phy_data = pdata->phy_data;
1063 int ret;
1064
1065 if (!phy_data->sfp_changed)
1066 return;
1067
1068 phy_data->sfp_phy_avail = 0;
1069
1070 if (phy_data->sfp_base != XGBE_SFP_BASE_1000_T)
1071 return;
1072
1073 /* Check access to the PHY by reading CTRL1 */
1074 ret = xgbe_phy_i2c_mii_read(pdata, MII_BMCR);
1075 if (ret < 0)
1076 return;
1077
1078 /* Successfully accessed the PHY */
1079 phy_data->sfp_phy_avail = 1;
1080 }
1081
xgbe_phy_check_sfp_rx_los(struct xgbe_phy_data * phy_data)1082 static bool xgbe_phy_check_sfp_rx_los(struct xgbe_phy_data *phy_data)
1083 {
1084 u8 *sfp_extd = phy_data->sfp_eeprom.extd;
1085
1086 if (!(sfp_extd[XGBE_SFP_EXTD_OPT1] & XGBE_SFP_EXTD_OPT1_RX_LOS))
1087 return false;
1088
1089 if (phy_data->sfp_gpio_mask & XGBE_GPIO_NO_RX_LOS)
1090 return false;
1091
1092 if (phy_data->sfp_gpio_inputs & (1 << phy_data->sfp_gpio_rx_los))
1093 return true;
1094
1095 return false;
1096 }
1097
xgbe_phy_check_sfp_tx_fault(struct xgbe_phy_data * phy_data)1098 static bool xgbe_phy_check_sfp_tx_fault(struct xgbe_phy_data *phy_data)
1099 {
1100 u8 *sfp_extd = phy_data->sfp_eeprom.extd;
1101
1102 if (!(sfp_extd[XGBE_SFP_EXTD_OPT1] & XGBE_SFP_EXTD_OPT1_TX_FAULT))
1103 return false;
1104
1105 if (phy_data->sfp_gpio_mask & XGBE_GPIO_NO_TX_FAULT)
1106 return false;
1107
1108 if (phy_data->sfp_gpio_inputs & (1 << phy_data->sfp_gpio_tx_fault))
1109 return true;
1110
1111 return false;
1112 }
1113
xgbe_phy_check_sfp_mod_absent(struct xgbe_phy_data * phy_data)1114 static bool xgbe_phy_check_sfp_mod_absent(struct xgbe_phy_data *phy_data)
1115 {
1116 if (phy_data->sfp_gpio_mask & XGBE_GPIO_NO_MOD_ABSENT)
1117 return false;
1118
1119 if (phy_data->sfp_gpio_inputs & (1 << phy_data->sfp_gpio_mod_absent))
1120 return true;
1121
1122 return false;
1123 }
1124
xgbe_phy_sfp_parse_eeprom(struct xgbe_prv_data * pdata)1125 static void xgbe_phy_sfp_parse_eeprom(struct xgbe_prv_data *pdata)
1126 {
1127 struct xgbe_phy_data *phy_data = pdata->phy_data;
1128 struct xgbe_sfp_eeprom *sfp_eeprom = &phy_data->sfp_eeprom;
1129 u8 *sfp_base;
1130
1131 sfp_base = sfp_eeprom->base;
1132
1133 if (sfp_base[XGBE_SFP_BASE_ID] != XGBE_SFP_ID_SFP)
1134 return;
1135
1136 if (sfp_base[XGBE_SFP_BASE_EXT_ID] != XGBE_SFP_EXT_ID_SFP)
1137 return;
1138
1139 /* Update transceiver signals (eeprom extd/options) */
1140 phy_data->sfp_tx_fault = xgbe_phy_check_sfp_tx_fault(phy_data);
1141 phy_data->sfp_rx_los = xgbe_phy_check_sfp_rx_los(phy_data);
1142
1143 /* Assume FIBER cable unless told otherwise */
1144 if (sfp_base[XGBE_SFP_BASE_CABLE] & XGBE_SFP_BASE_CABLE_PASSIVE) {
1145 phy_data->sfp_cable = XGBE_SFP_CABLE_PASSIVE;
1146 phy_data->sfp_cable_len = sfp_base[XGBE_SFP_BASE_CU_CABLE_LEN];
1147 } else if (sfp_base[XGBE_SFP_BASE_CABLE] & XGBE_SFP_BASE_CABLE_ACTIVE) {
1148 phy_data->sfp_cable = XGBE_SFP_CABLE_ACTIVE;
1149 } else {
1150 phy_data->sfp_cable = XGBE_SFP_CABLE_FIBER;
1151 }
1152
1153 /* Determine the type of SFP */
1154 if (phy_data->sfp_cable != XGBE_SFP_CABLE_FIBER &&
1155 xgbe_phy_sfp_bit_rate(sfp_eeprom, XGBE_SFP_SPEED_10000))
1156 phy_data->sfp_base = XGBE_SFP_BASE_10000_CR;
1157 else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_SR)
1158 phy_data->sfp_base = XGBE_SFP_BASE_10000_SR;
1159 else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_LR)
1160 phy_data->sfp_base = XGBE_SFP_BASE_10000_LR;
1161 else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_LRM)
1162 phy_data->sfp_base = XGBE_SFP_BASE_10000_LRM;
1163 else if (sfp_base[XGBE_SFP_BASE_10GBE_CC] & XGBE_SFP_BASE_10GBE_CC_ER)
1164 phy_data->sfp_base = XGBE_SFP_BASE_10000_ER;
1165 else if (sfp_base[XGBE_SFP_BASE_1GBE_CC] & XGBE_SFP_BASE_1GBE_CC_SX)
1166 phy_data->sfp_base = XGBE_SFP_BASE_1000_SX;
1167 else if (sfp_base[XGBE_SFP_BASE_1GBE_CC] & XGBE_SFP_BASE_1GBE_CC_LX)
1168 phy_data->sfp_base = XGBE_SFP_BASE_1000_LX;
1169 else if (sfp_base[XGBE_SFP_BASE_1GBE_CC] & XGBE_SFP_BASE_1GBE_CC_CX)
1170 phy_data->sfp_base = XGBE_SFP_BASE_1000_CX;
1171 else if (sfp_base[XGBE_SFP_BASE_1GBE_CC] & XGBE_SFP_BASE_1GBE_CC_T)
1172 phy_data->sfp_base = XGBE_SFP_BASE_1000_T;
1173
1174 switch (phy_data->sfp_base) {
1175 case XGBE_SFP_BASE_1000_T:
1176 phy_data->sfp_speed = XGBE_SFP_SPEED_100_1000;
1177 break;
1178 case XGBE_SFP_BASE_1000_SX:
1179 case XGBE_SFP_BASE_1000_LX:
1180 case XGBE_SFP_BASE_1000_CX:
1181 phy_data->sfp_speed = XGBE_SFP_SPEED_1000;
1182 break;
1183 case XGBE_SFP_BASE_10000_SR:
1184 case XGBE_SFP_BASE_10000_LR:
1185 case XGBE_SFP_BASE_10000_LRM:
1186 case XGBE_SFP_BASE_10000_ER:
1187 case XGBE_SFP_BASE_10000_CR:
1188 phy_data->sfp_speed = XGBE_SFP_SPEED_10000;
1189 break;
1190 default:
1191 break;
1192 }
1193 }
1194
xgbe_phy_sfp_eeprom_info(struct xgbe_prv_data * pdata,struct xgbe_sfp_eeprom * sfp_eeprom)1195 static void xgbe_phy_sfp_eeprom_info(struct xgbe_prv_data *pdata,
1196 struct xgbe_sfp_eeprom *sfp_eeprom)
1197 {
1198 struct xgbe_sfp_ascii sfp_ascii;
1199 char *sfp_data = (char *)&sfp_ascii;
1200
1201 netif_dbg(pdata, drv, pdata->netdev, "SFP detected:\n");
1202 memcpy(sfp_data, &sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_NAME],
1203 XGBE_SFP_BASE_VENDOR_NAME_LEN);
1204 sfp_data[XGBE_SFP_BASE_VENDOR_NAME_LEN] = '\0';
1205 netif_dbg(pdata, drv, pdata->netdev, " vendor: %s\n",
1206 sfp_data);
1207
1208 memcpy(sfp_data, &sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_PN],
1209 XGBE_SFP_BASE_VENDOR_PN_LEN);
1210 sfp_data[XGBE_SFP_BASE_VENDOR_PN_LEN] = '\0';
1211 netif_dbg(pdata, drv, pdata->netdev, " part number: %s\n",
1212 sfp_data);
1213
1214 memcpy(sfp_data, &sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_REV],
1215 XGBE_SFP_BASE_VENDOR_REV_LEN);
1216 sfp_data[XGBE_SFP_BASE_VENDOR_REV_LEN] = '\0';
1217 netif_dbg(pdata, drv, pdata->netdev, " revision level: %s\n",
1218 sfp_data);
1219
1220 memcpy(sfp_data, &sfp_eeprom->extd[XGBE_SFP_BASE_VENDOR_SN],
1221 XGBE_SFP_BASE_VENDOR_SN_LEN);
1222 sfp_data[XGBE_SFP_BASE_VENDOR_SN_LEN] = '\0';
1223 netif_dbg(pdata, drv, pdata->netdev, " serial number: %s\n",
1224 sfp_data);
1225 }
1226
xgbe_phy_sfp_verify_eeprom(u8 cc_in,u8 * buf,unsigned int len)1227 static bool xgbe_phy_sfp_verify_eeprom(u8 cc_in, u8 *buf, unsigned int len)
1228 {
1229 u8 cc;
1230
1231 for (cc = 0; len; buf++, len--)
1232 cc += *buf;
1233
1234 return cc == cc_in;
1235 }
1236
xgbe_phy_sfp_read_eeprom(struct xgbe_prv_data * pdata)1237 static int xgbe_phy_sfp_read_eeprom(struct xgbe_prv_data *pdata)
1238 {
1239 struct xgbe_phy_data *phy_data = pdata->phy_data;
1240 struct xgbe_sfp_eeprom sfp_eeprom;
1241 u8 eeprom_addr;
1242 int ret;
1243
1244 ret = xgbe_phy_sfp_get_mux(pdata);
1245 if (ret) {
1246 dev_err_once(pdata->dev, "%s: I2C error setting SFP MUX\n",
1247 netdev_name(pdata->netdev));
1248 return ret;
1249 }
1250
1251 /* Read the SFP serial ID eeprom */
1252 eeprom_addr = 0;
1253 ret = xgbe_phy_i2c_read(pdata, XGBE_SFP_SERIAL_ID_ADDRESS,
1254 &eeprom_addr, sizeof(eeprom_addr),
1255 &sfp_eeprom, sizeof(sfp_eeprom));
1256 if (ret) {
1257 dev_err_once(pdata->dev, "%s: I2C error reading SFP EEPROM\n",
1258 netdev_name(pdata->netdev));
1259 goto put;
1260 }
1261
1262 /* Validate the contents read */
1263 if (!xgbe_phy_sfp_verify_eeprom(sfp_eeprom.base[XGBE_SFP_BASE_CC],
1264 sfp_eeprom.base,
1265 sizeof(sfp_eeprom.base) - 1)) {
1266 ret = -EINVAL;
1267 goto put;
1268 }
1269
1270 if (!xgbe_phy_sfp_verify_eeprom(sfp_eeprom.extd[XGBE_SFP_EXTD_CC],
1271 sfp_eeprom.extd,
1272 sizeof(sfp_eeprom.extd) - 1)) {
1273 ret = -EINVAL;
1274 goto put;
1275 }
1276
1277 /* Check for an added or changed SFP */
1278 if (memcmp(&phy_data->sfp_eeprom, &sfp_eeprom, sizeof(sfp_eeprom))) {
1279 phy_data->sfp_changed = 1;
1280
1281 if (netif_msg_drv(pdata))
1282 xgbe_phy_sfp_eeprom_info(pdata, &sfp_eeprom);
1283
1284 memcpy(&phy_data->sfp_eeprom, &sfp_eeprom, sizeof(sfp_eeprom));
1285
1286 xgbe_phy_free_phy_device(pdata);
1287 } else {
1288 phy_data->sfp_changed = 0;
1289 }
1290
1291 put:
1292 xgbe_phy_sfp_put_mux(pdata);
1293
1294 return ret;
1295 }
1296
xgbe_phy_sfp_signals(struct xgbe_prv_data * pdata)1297 static void xgbe_phy_sfp_signals(struct xgbe_prv_data *pdata)
1298 {
1299 struct xgbe_phy_data *phy_data = pdata->phy_data;
1300 u8 gpio_reg, gpio_ports[2];
1301 int ret;
1302
1303 /* Read the input port registers */
1304 gpio_reg = 0;
1305 ret = xgbe_phy_i2c_read(pdata, phy_data->sfp_gpio_address,
1306 &gpio_reg, sizeof(gpio_reg),
1307 gpio_ports, sizeof(gpio_ports));
1308 if (ret) {
1309 dev_err_once(pdata->dev, "%s: I2C error reading SFP GPIOs\n",
1310 netdev_name(pdata->netdev));
1311 return;
1312 }
1313
1314 phy_data->sfp_gpio_inputs = (gpio_ports[1] << 8) | gpio_ports[0];
1315
1316 phy_data->sfp_mod_absent = xgbe_phy_check_sfp_mod_absent(phy_data);
1317 }
1318
xgbe_phy_sfp_mod_absent(struct xgbe_prv_data * pdata)1319 static void xgbe_phy_sfp_mod_absent(struct xgbe_prv_data *pdata)
1320 {
1321 struct xgbe_phy_data *phy_data = pdata->phy_data;
1322
1323 xgbe_phy_free_phy_device(pdata);
1324
1325 phy_data->sfp_mod_absent = 1;
1326 phy_data->sfp_phy_avail = 0;
1327 memset(&phy_data->sfp_eeprom, 0, sizeof(phy_data->sfp_eeprom));
1328 }
1329
xgbe_phy_sfp_reset(struct xgbe_phy_data * phy_data)1330 static void xgbe_phy_sfp_reset(struct xgbe_phy_data *phy_data)
1331 {
1332 phy_data->sfp_rx_los = 0;
1333 phy_data->sfp_tx_fault = 0;
1334 phy_data->sfp_mod_absent = 1;
1335 phy_data->sfp_base = XGBE_SFP_BASE_UNKNOWN;
1336 phy_data->sfp_cable = XGBE_SFP_CABLE_UNKNOWN;
1337 phy_data->sfp_speed = XGBE_SFP_SPEED_UNKNOWN;
1338 }
1339
xgbe_phy_sfp_detect(struct xgbe_prv_data * pdata)1340 static void xgbe_phy_sfp_detect(struct xgbe_prv_data *pdata)
1341 {
1342 struct xgbe_phy_data *phy_data = pdata->phy_data;
1343 int ret;
1344
1345 /* Reset the SFP signals and info */
1346 xgbe_phy_sfp_reset(phy_data);
1347
1348 ret = xgbe_phy_get_comm_ownership(pdata);
1349 if (ret)
1350 return;
1351
1352 /* Read the SFP signals and check for module presence */
1353 xgbe_phy_sfp_signals(pdata);
1354 if (phy_data->sfp_mod_absent) {
1355 xgbe_phy_sfp_mod_absent(pdata);
1356 goto put;
1357 }
1358
1359 ret = xgbe_phy_sfp_read_eeprom(pdata);
1360 if (ret) {
1361 /* Treat any error as if there isn't an SFP plugged in */
1362 xgbe_phy_sfp_reset(phy_data);
1363 xgbe_phy_sfp_mod_absent(pdata);
1364 goto put;
1365 }
1366
1367 xgbe_phy_sfp_parse_eeprom(pdata);
1368
1369 xgbe_phy_sfp_external_phy(pdata);
1370
1371 put:
1372 xgbe_phy_sfp_phy_settings(pdata);
1373
1374 xgbe_phy_put_comm_ownership(pdata);
1375 }
1376
xgbe_phy_module_eeprom(struct xgbe_prv_data * pdata,struct ethtool_eeprom * eeprom,u8 * data)1377 static int xgbe_phy_module_eeprom(struct xgbe_prv_data *pdata,
1378 struct ethtool_eeprom *eeprom, u8 *data)
1379 {
1380 struct xgbe_phy_data *phy_data = pdata->phy_data;
1381 u8 eeprom_addr, eeprom_data[XGBE_SFP_EEPROM_MAX];
1382 struct xgbe_sfp_eeprom *sfp_eeprom;
1383 unsigned int i, j, rem;
1384 int ret;
1385
1386 rem = eeprom->len;
1387
1388 if (!eeprom->len) {
1389 ret = -EINVAL;
1390 goto done;
1391 }
1392
1393 if ((eeprom->offset + eeprom->len) > XGBE_SFP_EEPROM_MAX) {
1394 ret = -EINVAL;
1395 goto done;
1396 }
1397
1398 if (phy_data->port_mode != XGBE_PORT_MODE_SFP) {
1399 ret = -ENXIO;
1400 goto done;
1401 }
1402
1403 if (!netif_running(pdata->netdev)) {
1404 ret = -EIO;
1405 goto done;
1406 }
1407
1408 if (phy_data->sfp_mod_absent) {
1409 ret = -EIO;
1410 goto done;
1411 }
1412
1413 ret = xgbe_phy_get_comm_ownership(pdata);
1414 if (ret) {
1415 ret = -EIO;
1416 goto done;
1417 }
1418
1419 ret = xgbe_phy_sfp_get_mux(pdata);
1420 if (ret) {
1421 netdev_err(pdata->netdev, "I2C error setting SFP MUX\n");
1422 ret = -EIO;
1423 goto put_own;
1424 }
1425
1426 /* Read the SFP serial ID eeprom */
1427 eeprom_addr = 0;
1428 ret = xgbe_phy_i2c_read(pdata, XGBE_SFP_SERIAL_ID_ADDRESS,
1429 &eeprom_addr, sizeof(eeprom_addr),
1430 eeprom_data, XGBE_SFP_EEPROM_BASE_LEN);
1431 if (ret) {
1432 netdev_err(pdata->netdev,
1433 "I2C error reading SFP EEPROM\n");
1434 ret = -EIO;
1435 goto put_mux;
1436 }
1437
1438 sfp_eeprom = (struct xgbe_sfp_eeprom *)eeprom_data;
1439
1440 if (XGBE_SFP_DIAGS_SUPPORTED(sfp_eeprom)) {
1441 /* Read the SFP diagnostic eeprom */
1442 eeprom_addr = 0;
1443 ret = xgbe_phy_i2c_read(pdata, XGBE_SFP_DIAG_INFO_ADDRESS,
1444 &eeprom_addr, sizeof(eeprom_addr),
1445 eeprom_data + XGBE_SFP_EEPROM_BASE_LEN,
1446 XGBE_SFP_EEPROM_DIAG_LEN);
1447 if (ret) {
1448 netdev_err(pdata->netdev,
1449 "I2C error reading SFP DIAGS\n");
1450 ret = -EIO;
1451 goto put_mux;
1452 }
1453 }
1454
1455 for (i = 0, j = eeprom->offset; i < eeprom->len; i++, j++) {
1456 if ((j >= XGBE_SFP_EEPROM_BASE_LEN) &&
1457 !XGBE_SFP_DIAGS_SUPPORTED(sfp_eeprom))
1458 break;
1459
1460 data[i] = eeprom_data[j];
1461 rem--;
1462 }
1463
1464 put_mux:
1465 xgbe_phy_sfp_put_mux(pdata);
1466
1467 put_own:
1468 xgbe_phy_put_comm_ownership(pdata);
1469
1470 done:
1471 eeprom->len -= rem;
1472
1473 return ret;
1474 }
1475
xgbe_phy_module_info(struct xgbe_prv_data * pdata,struct ethtool_modinfo * modinfo)1476 static int xgbe_phy_module_info(struct xgbe_prv_data *pdata,
1477 struct ethtool_modinfo *modinfo)
1478 {
1479 struct xgbe_phy_data *phy_data = pdata->phy_data;
1480
1481 if (phy_data->port_mode != XGBE_PORT_MODE_SFP)
1482 return -ENXIO;
1483
1484 if (!netif_running(pdata->netdev))
1485 return -EIO;
1486
1487 if (phy_data->sfp_mod_absent)
1488 return -EIO;
1489
1490 if (XGBE_SFP_DIAGS_SUPPORTED(&phy_data->sfp_eeprom)) {
1491 modinfo->type = ETH_MODULE_SFF_8472;
1492 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
1493 } else {
1494 modinfo->type = ETH_MODULE_SFF_8079;
1495 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
1496 }
1497
1498 return 0;
1499 }
1500
xgbe_phy_phydev_flowctrl(struct xgbe_prv_data * pdata)1501 static void xgbe_phy_phydev_flowctrl(struct xgbe_prv_data *pdata)
1502 {
1503 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1504 struct xgbe_phy_data *phy_data = pdata->phy_data;
1505 u16 lcl_adv = 0, rmt_adv = 0;
1506 u8 fc;
1507
1508 pdata->phy.tx_pause = 0;
1509 pdata->phy.rx_pause = 0;
1510
1511 if (!phy_data->phydev)
1512 return;
1513
1514 lcl_adv = linkmode_adv_to_lcl_adv_t(phy_data->phydev->advertising);
1515
1516 if (phy_data->phydev->pause) {
1517 XGBE_SET_LP_ADV(lks, Pause);
1518 rmt_adv |= LPA_PAUSE_CAP;
1519 }
1520 if (phy_data->phydev->asym_pause) {
1521 XGBE_SET_LP_ADV(lks, Asym_Pause);
1522 rmt_adv |= LPA_PAUSE_ASYM;
1523 }
1524
1525 fc = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
1526 if (fc & FLOW_CTRL_TX)
1527 pdata->phy.tx_pause = 1;
1528 if (fc & FLOW_CTRL_RX)
1529 pdata->phy.rx_pause = 1;
1530 }
1531
xgbe_phy_an37_sgmii_outcome(struct xgbe_prv_data * pdata)1532 static enum xgbe_mode xgbe_phy_an37_sgmii_outcome(struct xgbe_prv_data *pdata)
1533 {
1534 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1535 enum xgbe_mode mode;
1536
1537 XGBE_SET_LP_ADV(lks, Autoneg);
1538 XGBE_SET_LP_ADV(lks, TP);
1539
1540 /* Use external PHY to determine flow control */
1541 if (pdata->phy.pause_autoneg)
1542 xgbe_phy_phydev_flowctrl(pdata);
1543
1544 switch (pdata->an_status & XGBE_SGMII_AN_LINK_SPEED) {
1545 case XGBE_SGMII_AN_LINK_SPEED_100:
1546 if (pdata->an_status & XGBE_SGMII_AN_LINK_DUPLEX) {
1547 XGBE_SET_LP_ADV(lks, 100baseT_Full);
1548 mode = XGBE_MODE_SGMII_100;
1549 } else {
1550 /* Half-duplex not supported */
1551 XGBE_SET_LP_ADV(lks, 100baseT_Half);
1552 mode = XGBE_MODE_UNKNOWN;
1553 }
1554 break;
1555 case XGBE_SGMII_AN_LINK_SPEED_1000:
1556 if (pdata->an_status & XGBE_SGMII_AN_LINK_DUPLEX) {
1557 XGBE_SET_LP_ADV(lks, 1000baseT_Full);
1558 mode = XGBE_MODE_SGMII_1000;
1559 } else {
1560 /* Half-duplex not supported */
1561 XGBE_SET_LP_ADV(lks, 1000baseT_Half);
1562 mode = XGBE_MODE_UNKNOWN;
1563 }
1564 break;
1565 default:
1566 mode = XGBE_MODE_UNKNOWN;
1567 }
1568
1569 return mode;
1570 }
1571
xgbe_phy_an37_outcome(struct xgbe_prv_data * pdata)1572 static enum xgbe_mode xgbe_phy_an37_outcome(struct xgbe_prv_data *pdata)
1573 {
1574 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1575 enum xgbe_mode mode;
1576 unsigned int ad_reg, lp_reg;
1577
1578 XGBE_SET_LP_ADV(lks, Autoneg);
1579 XGBE_SET_LP_ADV(lks, FIBRE);
1580
1581 /* Compare Advertisement and Link Partner register */
1582 ad_reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_ADVERTISE);
1583 lp_reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_LP_ABILITY);
1584 if (lp_reg & 0x100)
1585 XGBE_SET_LP_ADV(lks, Pause);
1586 if (lp_reg & 0x80)
1587 XGBE_SET_LP_ADV(lks, Asym_Pause);
1588
1589 if (pdata->phy.pause_autoneg) {
1590 /* Set flow control based on auto-negotiation result */
1591 pdata->phy.tx_pause = 0;
1592 pdata->phy.rx_pause = 0;
1593
1594 if (ad_reg & lp_reg & 0x100) {
1595 pdata->phy.tx_pause = 1;
1596 pdata->phy.rx_pause = 1;
1597 } else if (ad_reg & lp_reg & 0x80) {
1598 if (ad_reg & 0x100)
1599 pdata->phy.rx_pause = 1;
1600 else if (lp_reg & 0x100)
1601 pdata->phy.tx_pause = 1;
1602 }
1603 }
1604
1605 if (lp_reg & 0x20)
1606 XGBE_SET_LP_ADV(lks, 1000baseX_Full);
1607
1608 /* Half duplex is not supported */
1609 ad_reg &= lp_reg;
1610 mode = (ad_reg & 0x20) ? XGBE_MODE_X : XGBE_MODE_UNKNOWN;
1611
1612 return mode;
1613 }
1614
xgbe_phy_an73_redrv_outcome(struct xgbe_prv_data * pdata)1615 static enum xgbe_mode xgbe_phy_an73_redrv_outcome(struct xgbe_prv_data *pdata)
1616 {
1617 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1618 struct xgbe_phy_data *phy_data = pdata->phy_data;
1619 enum xgbe_mode mode;
1620 unsigned int ad_reg, lp_reg;
1621
1622 XGBE_SET_LP_ADV(lks, Autoneg);
1623 XGBE_SET_LP_ADV(lks, Backplane);
1624
1625 /* Use external PHY to determine flow control */
1626 if (pdata->phy.pause_autoneg)
1627 xgbe_phy_phydev_flowctrl(pdata);
1628
1629 /* Compare Advertisement and Link Partner register 2 */
1630 ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1);
1631 lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 1);
1632 if (lp_reg & 0x80)
1633 XGBE_SET_LP_ADV(lks, 10000baseKR_Full);
1634 if (lp_reg & 0x20)
1635 XGBE_SET_LP_ADV(lks, 1000baseKX_Full);
1636
1637 ad_reg &= lp_reg;
1638 if (ad_reg & 0x80) {
1639 switch (phy_data->port_mode) {
1640 case XGBE_PORT_MODE_BACKPLANE:
1641 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
1642 mode = XGBE_MODE_KR;
1643 break;
1644 default:
1645 mode = XGBE_MODE_SFI;
1646 break;
1647 }
1648 } else if (ad_reg & 0x20) {
1649 switch (phy_data->port_mode) {
1650 case XGBE_PORT_MODE_BACKPLANE:
1651 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
1652 mode = XGBE_MODE_KX_1000;
1653 break;
1654 case XGBE_PORT_MODE_1000BASE_X:
1655 mode = XGBE_MODE_X;
1656 break;
1657 case XGBE_PORT_MODE_SFP:
1658 switch (phy_data->sfp_base) {
1659 case XGBE_SFP_BASE_1000_T:
1660 if (phy_data->phydev &&
1661 (phy_data->phydev->speed == SPEED_100))
1662 mode = XGBE_MODE_SGMII_100;
1663 else
1664 mode = XGBE_MODE_SGMII_1000;
1665 break;
1666 case XGBE_SFP_BASE_1000_SX:
1667 case XGBE_SFP_BASE_1000_LX:
1668 case XGBE_SFP_BASE_1000_CX:
1669 default:
1670 mode = XGBE_MODE_X;
1671 break;
1672 }
1673 break;
1674 default:
1675 if (phy_data->phydev &&
1676 (phy_data->phydev->speed == SPEED_100))
1677 mode = XGBE_MODE_SGMII_100;
1678 else
1679 mode = XGBE_MODE_SGMII_1000;
1680 break;
1681 }
1682 } else {
1683 mode = XGBE_MODE_UNKNOWN;
1684 }
1685
1686 /* Compare Advertisement and Link Partner register 3 */
1687 ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
1688 lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 2);
1689 if (lp_reg & 0xc000)
1690 XGBE_SET_LP_ADV(lks, 10000baseR_FEC);
1691
1692 return mode;
1693 }
1694
xgbe_phy_an73_outcome(struct xgbe_prv_data * pdata)1695 static enum xgbe_mode xgbe_phy_an73_outcome(struct xgbe_prv_data *pdata)
1696 {
1697 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1698 enum xgbe_mode mode;
1699 unsigned int ad_reg, lp_reg;
1700
1701 XGBE_SET_LP_ADV(lks, Autoneg);
1702 XGBE_SET_LP_ADV(lks, Backplane);
1703
1704 /* Compare Advertisement and Link Partner register 1 */
1705 ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
1706 lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA);
1707 if (lp_reg & 0x400)
1708 XGBE_SET_LP_ADV(lks, Pause);
1709 if (lp_reg & 0x800)
1710 XGBE_SET_LP_ADV(lks, Asym_Pause);
1711
1712 if (pdata->phy.pause_autoneg) {
1713 /* Set flow control based on auto-negotiation result */
1714 pdata->phy.tx_pause = 0;
1715 pdata->phy.rx_pause = 0;
1716
1717 if (ad_reg & lp_reg & 0x400) {
1718 pdata->phy.tx_pause = 1;
1719 pdata->phy.rx_pause = 1;
1720 } else if (ad_reg & lp_reg & 0x800) {
1721 if (ad_reg & 0x400)
1722 pdata->phy.rx_pause = 1;
1723 else if (lp_reg & 0x400)
1724 pdata->phy.tx_pause = 1;
1725 }
1726 }
1727
1728 /* Compare Advertisement and Link Partner register 2 */
1729 ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1);
1730 lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 1);
1731 if (lp_reg & 0x80)
1732 XGBE_SET_LP_ADV(lks, 10000baseKR_Full);
1733 if (lp_reg & 0x20)
1734 XGBE_SET_LP_ADV(lks, 1000baseKX_Full);
1735
1736 ad_reg &= lp_reg;
1737 if (ad_reg & 0x80)
1738 mode = XGBE_MODE_KR;
1739 else if (ad_reg & 0x20)
1740 mode = XGBE_MODE_KX_1000;
1741 else
1742 mode = XGBE_MODE_UNKNOWN;
1743
1744 /* Compare Advertisement and Link Partner register 3 */
1745 ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
1746 lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 2);
1747 if (lp_reg & 0xc000)
1748 XGBE_SET_LP_ADV(lks, 10000baseR_FEC);
1749
1750 return mode;
1751 }
1752
xgbe_phy_an_outcome(struct xgbe_prv_data * pdata)1753 static enum xgbe_mode xgbe_phy_an_outcome(struct xgbe_prv_data *pdata)
1754 {
1755 switch (pdata->an_mode) {
1756 case XGBE_AN_MODE_CL73:
1757 return xgbe_phy_an73_outcome(pdata);
1758 case XGBE_AN_MODE_CL73_REDRV:
1759 return xgbe_phy_an73_redrv_outcome(pdata);
1760 case XGBE_AN_MODE_CL37:
1761 return xgbe_phy_an37_outcome(pdata);
1762 case XGBE_AN_MODE_CL37_SGMII:
1763 return xgbe_phy_an37_sgmii_outcome(pdata);
1764 default:
1765 return XGBE_MODE_UNKNOWN;
1766 }
1767 }
1768
xgbe_phy_an_advertising(struct xgbe_prv_data * pdata,struct ethtool_link_ksettings * dlks)1769 static void xgbe_phy_an_advertising(struct xgbe_prv_data *pdata,
1770 struct ethtool_link_ksettings *dlks)
1771 {
1772 struct ethtool_link_ksettings *slks = &pdata->phy.lks;
1773 struct xgbe_phy_data *phy_data = pdata->phy_data;
1774
1775 XGBE_LM_COPY(dlks, advertising, slks, advertising);
1776
1777 /* Without a re-driver, just return current advertising */
1778 if (!phy_data->redrv)
1779 return;
1780
1781 /* With the KR re-driver we need to advertise a single speed */
1782 XGBE_CLR_ADV(dlks, 1000baseKX_Full);
1783 XGBE_CLR_ADV(dlks, 10000baseKR_Full);
1784
1785 /* Advertise FEC support is present */
1786 if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE)
1787 XGBE_SET_ADV(dlks, 10000baseR_FEC);
1788
1789 switch (phy_data->port_mode) {
1790 case XGBE_PORT_MODE_BACKPLANE:
1791 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
1792 XGBE_SET_ADV(dlks, 10000baseKR_Full);
1793 break;
1794 case XGBE_PORT_MODE_BACKPLANE_2500:
1795 XGBE_SET_ADV(dlks, 1000baseKX_Full);
1796 break;
1797 case XGBE_PORT_MODE_1000BASE_T:
1798 case XGBE_PORT_MODE_1000BASE_X:
1799 case XGBE_PORT_MODE_NBASE_T:
1800 XGBE_SET_ADV(dlks, 1000baseKX_Full);
1801 break;
1802 case XGBE_PORT_MODE_10GBASE_T:
1803 if (phy_data->phydev &&
1804 (phy_data->phydev->speed == SPEED_10000))
1805 XGBE_SET_ADV(dlks, 10000baseKR_Full);
1806 else
1807 XGBE_SET_ADV(dlks, 1000baseKX_Full);
1808 break;
1809 case XGBE_PORT_MODE_10GBASE_R:
1810 XGBE_SET_ADV(dlks, 10000baseKR_Full);
1811 break;
1812 case XGBE_PORT_MODE_SFP:
1813 switch (phy_data->sfp_base) {
1814 case XGBE_SFP_BASE_1000_T:
1815 case XGBE_SFP_BASE_1000_SX:
1816 case XGBE_SFP_BASE_1000_LX:
1817 case XGBE_SFP_BASE_1000_CX:
1818 XGBE_SET_ADV(dlks, 1000baseKX_Full);
1819 break;
1820 default:
1821 XGBE_SET_ADV(dlks, 10000baseKR_Full);
1822 break;
1823 }
1824 break;
1825 default:
1826 XGBE_SET_ADV(dlks, 10000baseKR_Full);
1827 break;
1828 }
1829 }
1830
xgbe_phy_an_config(struct xgbe_prv_data * pdata)1831 static int xgbe_phy_an_config(struct xgbe_prv_data *pdata)
1832 {
1833 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
1834 struct xgbe_phy_data *phy_data = pdata->phy_data;
1835 int ret;
1836
1837 ret = xgbe_phy_find_phy_device(pdata);
1838 if (ret)
1839 return ret;
1840
1841 if (!phy_data->phydev)
1842 return 0;
1843
1844 phy_data->phydev->autoneg = pdata->phy.autoneg;
1845 linkmode_and(phy_data->phydev->advertising,
1846 phy_data->phydev->supported,
1847 lks->link_modes.advertising);
1848
1849 if (pdata->phy.autoneg != AUTONEG_ENABLE) {
1850 phy_data->phydev->speed = pdata->phy.speed;
1851 phy_data->phydev->duplex = pdata->phy.duplex;
1852 }
1853
1854 ret = phy_start_aneg(phy_data->phydev);
1855
1856 return ret;
1857 }
1858
xgbe_phy_an_sfp_mode(struct xgbe_phy_data * phy_data)1859 static enum xgbe_an_mode xgbe_phy_an_sfp_mode(struct xgbe_phy_data *phy_data)
1860 {
1861 switch (phy_data->sfp_base) {
1862 case XGBE_SFP_BASE_1000_T:
1863 return XGBE_AN_MODE_CL37_SGMII;
1864 case XGBE_SFP_BASE_1000_SX:
1865 case XGBE_SFP_BASE_1000_LX:
1866 case XGBE_SFP_BASE_1000_CX:
1867 return XGBE_AN_MODE_CL37;
1868 default:
1869 return XGBE_AN_MODE_NONE;
1870 }
1871 }
1872
xgbe_phy_an_mode(struct xgbe_prv_data * pdata)1873 static enum xgbe_an_mode xgbe_phy_an_mode(struct xgbe_prv_data *pdata)
1874 {
1875 struct xgbe_phy_data *phy_data = pdata->phy_data;
1876
1877 /* A KR re-driver will always require CL73 AN */
1878 if (phy_data->redrv)
1879 return XGBE_AN_MODE_CL73_REDRV;
1880
1881 switch (phy_data->port_mode) {
1882 case XGBE_PORT_MODE_BACKPLANE:
1883 return XGBE_AN_MODE_CL73;
1884 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
1885 case XGBE_PORT_MODE_BACKPLANE_2500:
1886 return XGBE_AN_MODE_NONE;
1887 case XGBE_PORT_MODE_1000BASE_T:
1888 return XGBE_AN_MODE_CL37_SGMII;
1889 case XGBE_PORT_MODE_1000BASE_X:
1890 return XGBE_AN_MODE_CL37;
1891 case XGBE_PORT_MODE_NBASE_T:
1892 return XGBE_AN_MODE_CL37_SGMII;
1893 case XGBE_PORT_MODE_10GBASE_T:
1894 return XGBE_AN_MODE_CL73;
1895 case XGBE_PORT_MODE_10GBASE_R:
1896 return XGBE_AN_MODE_NONE;
1897 case XGBE_PORT_MODE_SFP:
1898 return xgbe_phy_an_sfp_mode(phy_data);
1899 default:
1900 return XGBE_AN_MODE_NONE;
1901 }
1902 }
1903
xgbe_phy_set_redrv_mode_mdio(struct xgbe_prv_data * pdata,enum xgbe_phy_redrv_mode mode)1904 static int xgbe_phy_set_redrv_mode_mdio(struct xgbe_prv_data *pdata,
1905 enum xgbe_phy_redrv_mode mode)
1906 {
1907 struct xgbe_phy_data *phy_data = pdata->phy_data;
1908 u16 redrv_reg, redrv_val;
1909
1910 redrv_reg = XGBE_PHY_REDRV_MODE_REG + (phy_data->redrv_lane * 0x1000);
1911 redrv_val = (u16)mode;
1912
1913 return pdata->hw_if.write_ext_mii_regs(pdata, phy_data->redrv_addr,
1914 redrv_reg, redrv_val);
1915 }
1916
xgbe_phy_set_redrv_mode_i2c(struct xgbe_prv_data * pdata,enum xgbe_phy_redrv_mode mode)1917 static int xgbe_phy_set_redrv_mode_i2c(struct xgbe_prv_data *pdata,
1918 enum xgbe_phy_redrv_mode mode)
1919 {
1920 struct xgbe_phy_data *phy_data = pdata->phy_data;
1921 unsigned int redrv_reg;
1922 int ret;
1923
1924 /* Calculate the register to write */
1925 redrv_reg = XGBE_PHY_REDRV_MODE_REG + (phy_data->redrv_lane * 0x1000);
1926
1927 ret = xgbe_phy_redrv_write(pdata, redrv_reg, mode);
1928
1929 return ret;
1930 }
1931
xgbe_phy_set_redrv_mode(struct xgbe_prv_data * pdata)1932 static void xgbe_phy_set_redrv_mode(struct xgbe_prv_data *pdata)
1933 {
1934 struct xgbe_phy_data *phy_data = pdata->phy_data;
1935 enum xgbe_phy_redrv_mode mode;
1936 int ret;
1937
1938 if (!phy_data->redrv)
1939 return;
1940
1941 mode = XGBE_PHY_REDRV_MODE_CX;
1942 if ((phy_data->port_mode == XGBE_PORT_MODE_SFP) &&
1943 (phy_data->sfp_base != XGBE_SFP_BASE_1000_CX) &&
1944 (phy_data->sfp_base != XGBE_SFP_BASE_10000_CR))
1945 mode = XGBE_PHY_REDRV_MODE_SR;
1946
1947 ret = xgbe_phy_get_comm_ownership(pdata);
1948 if (ret)
1949 return;
1950
1951 if (phy_data->redrv_if)
1952 xgbe_phy_set_redrv_mode_i2c(pdata, mode);
1953 else
1954 xgbe_phy_set_redrv_mode_mdio(pdata, mode);
1955
1956 xgbe_phy_put_comm_ownership(pdata);
1957 }
1958
xgbe_phy_rx_reset(struct xgbe_prv_data * pdata)1959 static void xgbe_phy_rx_reset(struct xgbe_prv_data *pdata)
1960 {
1961 int reg;
1962
1963 reg = XMDIO_READ_BITS(pdata, MDIO_MMD_PCS, MDIO_PCS_DIGITAL_STAT,
1964 XGBE_PCS_PSEQ_STATE_MASK);
1965 if (reg == XGBE_PCS_PSEQ_STATE_POWER_GOOD) {
1966 /* Mailbox command timed out, reset of RX block is required.
1967 * This can be done by asseting the reset bit and wait for
1968 * its compeletion.
1969 */
1970 XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_RX_CTRL1,
1971 XGBE_PMA_RX_RST_0_MASK, XGBE_PMA_RX_RST_0_RESET_ON);
1972 ndelay(20);
1973 XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_RX_CTRL1,
1974 XGBE_PMA_RX_RST_0_MASK, XGBE_PMA_RX_RST_0_RESET_OFF);
1975 usleep_range(40, 50);
1976 netif_err(pdata, link, pdata->netdev, "firmware mailbox reset performed\n");
1977 }
1978 }
1979
xgbe_phy_pll_ctrl(struct xgbe_prv_data * pdata,bool enable)1980 static void xgbe_phy_pll_ctrl(struct xgbe_prv_data *pdata, bool enable)
1981 {
1982 XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_MISC_CTRL0,
1983 XGBE_PMA_PLL_CTRL_MASK,
1984 enable ? XGBE_PMA_PLL_CTRL_ENABLE
1985 : XGBE_PMA_PLL_CTRL_DISABLE);
1986
1987 /* Wait for command to complete */
1988 usleep_range(100, 200);
1989 }
1990
xgbe_phy_perform_ratechange(struct xgbe_prv_data * pdata,unsigned int cmd,unsigned int sub_cmd)1991 static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
1992 unsigned int cmd, unsigned int sub_cmd)
1993 {
1994 unsigned int s0 = 0;
1995 unsigned int wait;
1996
1997 /* Disable PLL re-initialization during FW command processing */
1998 xgbe_phy_pll_ctrl(pdata, false);
1999
2000 /* Log if a previous command did not complete */
2001 if (XP_IOREAD_BITS(pdata, XP_DRIVER_INT_RO, STATUS)) {
2002 netif_dbg(pdata, link, pdata->netdev,
2003 "firmware mailbox not ready for command\n");
2004 xgbe_phy_rx_reset(pdata);
2005 }
2006
2007 /* Construct the command */
2008 XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, COMMAND, cmd);
2009 XP_SET_BITS(s0, XP_DRIVER_SCRATCH_0, SUB_COMMAND, sub_cmd);
2010
2011 /* Issue the command */
2012 XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_0, s0);
2013 XP_IOWRITE(pdata, XP_DRIVER_SCRATCH_1, 0);
2014 XP_IOWRITE_BITS(pdata, XP_DRIVER_INT_REQ, REQUEST, 1);
2015
2016 /* Wait for command to complete */
2017 wait = XGBE_RATECHANGE_COUNT;
2018 while (wait--) {
2019 if (!XP_IOREAD_BITS(pdata, XP_DRIVER_INT_RO, STATUS))
2020 goto reenable_pll;
2021
2022 usleep_range(1000, 2000);
2023 }
2024
2025 netif_dbg(pdata, link, pdata->netdev,
2026 "firmware mailbox command did not complete\n");
2027
2028 /* Reset on error */
2029 xgbe_phy_rx_reset(pdata);
2030
2031 reenable_pll:
2032 /* Enable PLL re-initialization */
2033 xgbe_phy_pll_ctrl(pdata, true);
2034 }
2035
xgbe_phy_rrc(struct xgbe_prv_data * pdata)2036 static void xgbe_phy_rrc(struct xgbe_prv_data *pdata)
2037 {
2038 /* Receiver Reset Cycle */
2039 xgbe_phy_perform_ratechange(pdata, 5, 0);
2040
2041 netif_dbg(pdata, link, pdata->netdev, "receiver reset complete\n");
2042 }
2043
xgbe_phy_power_off(struct xgbe_prv_data * pdata)2044 static void xgbe_phy_power_off(struct xgbe_prv_data *pdata)
2045 {
2046 struct xgbe_phy_data *phy_data = pdata->phy_data;
2047
2048 /* Power off */
2049 xgbe_phy_perform_ratechange(pdata, 0, 0);
2050
2051 phy_data->cur_mode = XGBE_MODE_UNKNOWN;
2052
2053 netif_dbg(pdata, link, pdata->netdev, "phy powered off\n");
2054 }
2055
xgbe_phy_sfi_mode(struct xgbe_prv_data * pdata)2056 static void xgbe_phy_sfi_mode(struct xgbe_prv_data *pdata)
2057 {
2058 struct xgbe_phy_data *phy_data = pdata->phy_data;
2059
2060 xgbe_phy_set_redrv_mode(pdata);
2061
2062 /* 10G/SFI */
2063 if (phy_data->sfp_cable != XGBE_SFP_CABLE_PASSIVE) {
2064 xgbe_phy_perform_ratechange(pdata, 3, 0);
2065 } else {
2066 if (phy_data->sfp_cable_len <= 1)
2067 xgbe_phy_perform_ratechange(pdata, 3, 1);
2068 else if (phy_data->sfp_cable_len <= 3)
2069 xgbe_phy_perform_ratechange(pdata, 3, 2);
2070 else
2071 xgbe_phy_perform_ratechange(pdata, 3, 3);
2072 }
2073
2074 phy_data->cur_mode = XGBE_MODE_SFI;
2075
2076 netif_dbg(pdata, link, pdata->netdev, "10GbE SFI mode set\n");
2077 }
2078
xgbe_phy_x_mode(struct xgbe_prv_data * pdata)2079 static void xgbe_phy_x_mode(struct xgbe_prv_data *pdata)
2080 {
2081 struct xgbe_phy_data *phy_data = pdata->phy_data;
2082
2083 xgbe_phy_set_redrv_mode(pdata);
2084
2085 /* 1G/X */
2086 xgbe_phy_perform_ratechange(pdata, 1, 3);
2087
2088 phy_data->cur_mode = XGBE_MODE_X;
2089
2090 netif_dbg(pdata, link, pdata->netdev, "1GbE X mode set\n");
2091 }
2092
xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data * pdata)2093 static void xgbe_phy_sgmii_1000_mode(struct xgbe_prv_data *pdata)
2094 {
2095 struct xgbe_phy_data *phy_data = pdata->phy_data;
2096
2097 xgbe_phy_set_redrv_mode(pdata);
2098
2099 /* 1G/SGMII */
2100 xgbe_phy_perform_ratechange(pdata, 1, 2);
2101
2102 phy_data->cur_mode = XGBE_MODE_SGMII_1000;
2103
2104 netif_dbg(pdata, link, pdata->netdev, "1GbE SGMII mode set\n");
2105 }
2106
xgbe_phy_sgmii_100_mode(struct xgbe_prv_data * pdata)2107 static void xgbe_phy_sgmii_100_mode(struct xgbe_prv_data *pdata)
2108 {
2109 struct xgbe_phy_data *phy_data = pdata->phy_data;
2110
2111 xgbe_phy_set_redrv_mode(pdata);
2112
2113 /* 100M/SGMII */
2114 xgbe_phy_perform_ratechange(pdata, 1, 1);
2115
2116 phy_data->cur_mode = XGBE_MODE_SGMII_100;
2117
2118 netif_dbg(pdata, link, pdata->netdev, "100MbE SGMII mode set\n");
2119 }
2120
xgbe_phy_kr_mode(struct xgbe_prv_data * pdata)2121 static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata)
2122 {
2123 struct xgbe_phy_data *phy_data = pdata->phy_data;
2124
2125 xgbe_phy_set_redrv_mode(pdata);
2126
2127 /* 10G/KR */
2128 xgbe_phy_perform_ratechange(pdata, 4, 0);
2129
2130 phy_data->cur_mode = XGBE_MODE_KR;
2131
2132 netif_dbg(pdata, link, pdata->netdev, "10GbE KR mode set\n");
2133 }
2134
xgbe_phy_kx_2500_mode(struct xgbe_prv_data * pdata)2135 static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata)
2136 {
2137 struct xgbe_phy_data *phy_data = pdata->phy_data;
2138
2139 xgbe_phy_set_redrv_mode(pdata);
2140
2141 /* 2.5G/KX */
2142 xgbe_phy_perform_ratechange(pdata, 2, 0);
2143
2144 phy_data->cur_mode = XGBE_MODE_KX_2500;
2145
2146 netif_dbg(pdata, link, pdata->netdev, "2.5GbE KX mode set\n");
2147 }
2148
xgbe_phy_kx_1000_mode(struct xgbe_prv_data * pdata)2149 static void xgbe_phy_kx_1000_mode(struct xgbe_prv_data *pdata)
2150 {
2151 struct xgbe_phy_data *phy_data = pdata->phy_data;
2152
2153 xgbe_phy_set_redrv_mode(pdata);
2154
2155 /* 1G/KX */
2156 xgbe_phy_perform_ratechange(pdata, 1, 3);
2157
2158 phy_data->cur_mode = XGBE_MODE_KX_1000;
2159
2160 netif_dbg(pdata, link, pdata->netdev, "1GbE KX mode set\n");
2161 }
2162
xgbe_phy_cur_mode(struct xgbe_prv_data * pdata)2163 static enum xgbe_mode xgbe_phy_cur_mode(struct xgbe_prv_data *pdata)
2164 {
2165 struct xgbe_phy_data *phy_data = pdata->phy_data;
2166
2167 return phy_data->cur_mode;
2168 }
2169
xgbe_phy_switch_baset_mode(struct xgbe_prv_data * pdata)2170 static enum xgbe_mode xgbe_phy_switch_baset_mode(struct xgbe_prv_data *pdata)
2171 {
2172 struct xgbe_phy_data *phy_data = pdata->phy_data;
2173
2174 /* No switching if not 10GBase-T */
2175 if (phy_data->port_mode != XGBE_PORT_MODE_10GBASE_T)
2176 return xgbe_phy_cur_mode(pdata);
2177
2178 switch (xgbe_phy_cur_mode(pdata)) {
2179 case XGBE_MODE_SGMII_100:
2180 case XGBE_MODE_SGMII_1000:
2181 return XGBE_MODE_KR;
2182 case XGBE_MODE_KR:
2183 default:
2184 return XGBE_MODE_SGMII_1000;
2185 }
2186 }
2187
xgbe_phy_switch_bp_2500_mode(struct xgbe_prv_data * pdata)2188 static enum xgbe_mode xgbe_phy_switch_bp_2500_mode(struct xgbe_prv_data *pdata)
2189 {
2190 return XGBE_MODE_KX_2500;
2191 }
2192
xgbe_phy_switch_bp_mode(struct xgbe_prv_data * pdata)2193 static enum xgbe_mode xgbe_phy_switch_bp_mode(struct xgbe_prv_data *pdata)
2194 {
2195 /* If we are in KR switch to KX, and vice-versa */
2196 switch (xgbe_phy_cur_mode(pdata)) {
2197 case XGBE_MODE_KX_1000:
2198 return XGBE_MODE_KR;
2199 case XGBE_MODE_KR:
2200 default:
2201 return XGBE_MODE_KX_1000;
2202 }
2203 }
2204
xgbe_phy_switch_mode(struct xgbe_prv_data * pdata)2205 static enum xgbe_mode xgbe_phy_switch_mode(struct xgbe_prv_data *pdata)
2206 {
2207 struct xgbe_phy_data *phy_data = pdata->phy_data;
2208
2209 switch (phy_data->port_mode) {
2210 case XGBE_PORT_MODE_BACKPLANE:
2211 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2212 return xgbe_phy_switch_bp_mode(pdata);
2213 case XGBE_PORT_MODE_BACKPLANE_2500:
2214 return xgbe_phy_switch_bp_2500_mode(pdata);
2215 case XGBE_PORT_MODE_1000BASE_T:
2216 case XGBE_PORT_MODE_NBASE_T:
2217 case XGBE_PORT_MODE_10GBASE_T:
2218 return xgbe_phy_switch_baset_mode(pdata);
2219 case XGBE_PORT_MODE_1000BASE_X:
2220 case XGBE_PORT_MODE_10GBASE_R:
2221 case XGBE_PORT_MODE_SFP:
2222 /* No switching, so just return current mode */
2223 return xgbe_phy_cur_mode(pdata);
2224 default:
2225 return XGBE_MODE_UNKNOWN;
2226 }
2227 }
2228
xgbe_phy_get_basex_mode(struct xgbe_phy_data * phy_data,int speed)2229 static enum xgbe_mode xgbe_phy_get_basex_mode(struct xgbe_phy_data *phy_data,
2230 int speed)
2231 {
2232 switch (speed) {
2233 case SPEED_1000:
2234 return XGBE_MODE_X;
2235 case SPEED_10000:
2236 return XGBE_MODE_KR;
2237 default:
2238 return XGBE_MODE_UNKNOWN;
2239 }
2240 }
2241
xgbe_phy_get_baset_mode(struct xgbe_phy_data * phy_data,int speed)2242 static enum xgbe_mode xgbe_phy_get_baset_mode(struct xgbe_phy_data *phy_data,
2243 int speed)
2244 {
2245 switch (speed) {
2246 case SPEED_100:
2247 return XGBE_MODE_SGMII_100;
2248 case SPEED_1000:
2249 return XGBE_MODE_SGMII_1000;
2250 case SPEED_2500:
2251 return XGBE_MODE_KX_2500;
2252 case SPEED_10000:
2253 return XGBE_MODE_KR;
2254 default:
2255 return XGBE_MODE_UNKNOWN;
2256 }
2257 }
2258
xgbe_phy_get_sfp_mode(struct xgbe_phy_data * phy_data,int speed)2259 static enum xgbe_mode xgbe_phy_get_sfp_mode(struct xgbe_phy_data *phy_data,
2260 int speed)
2261 {
2262 switch (speed) {
2263 case SPEED_100:
2264 return XGBE_MODE_SGMII_100;
2265 case SPEED_1000:
2266 if (phy_data->sfp_base == XGBE_SFP_BASE_1000_T)
2267 return XGBE_MODE_SGMII_1000;
2268 else
2269 return XGBE_MODE_X;
2270 case SPEED_10000:
2271 case SPEED_UNKNOWN:
2272 return XGBE_MODE_SFI;
2273 default:
2274 return XGBE_MODE_UNKNOWN;
2275 }
2276 }
2277
xgbe_phy_get_bp_2500_mode(int speed)2278 static enum xgbe_mode xgbe_phy_get_bp_2500_mode(int speed)
2279 {
2280 switch (speed) {
2281 case SPEED_2500:
2282 return XGBE_MODE_KX_2500;
2283 default:
2284 return XGBE_MODE_UNKNOWN;
2285 }
2286 }
2287
xgbe_phy_get_bp_mode(int speed)2288 static enum xgbe_mode xgbe_phy_get_bp_mode(int speed)
2289 {
2290 switch (speed) {
2291 case SPEED_1000:
2292 return XGBE_MODE_KX_1000;
2293 case SPEED_10000:
2294 return XGBE_MODE_KR;
2295 default:
2296 return XGBE_MODE_UNKNOWN;
2297 }
2298 }
2299
xgbe_phy_get_mode(struct xgbe_prv_data * pdata,int speed)2300 static enum xgbe_mode xgbe_phy_get_mode(struct xgbe_prv_data *pdata,
2301 int speed)
2302 {
2303 struct xgbe_phy_data *phy_data = pdata->phy_data;
2304
2305 switch (phy_data->port_mode) {
2306 case XGBE_PORT_MODE_BACKPLANE:
2307 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2308 return xgbe_phy_get_bp_mode(speed);
2309 case XGBE_PORT_MODE_BACKPLANE_2500:
2310 return xgbe_phy_get_bp_2500_mode(speed);
2311 case XGBE_PORT_MODE_1000BASE_T:
2312 case XGBE_PORT_MODE_NBASE_T:
2313 case XGBE_PORT_MODE_10GBASE_T:
2314 return xgbe_phy_get_baset_mode(phy_data, speed);
2315 case XGBE_PORT_MODE_1000BASE_X:
2316 case XGBE_PORT_MODE_10GBASE_R:
2317 return xgbe_phy_get_basex_mode(phy_data, speed);
2318 case XGBE_PORT_MODE_SFP:
2319 return xgbe_phy_get_sfp_mode(phy_data, speed);
2320 default:
2321 return XGBE_MODE_UNKNOWN;
2322 }
2323 }
2324
xgbe_phy_set_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2325 static void xgbe_phy_set_mode(struct xgbe_prv_data *pdata, enum xgbe_mode mode)
2326 {
2327 switch (mode) {
2328 case XGBE_MODE_KX_1000:
2329 xgbe_phy_kx_1000_mode(pdata);
2330 break;
2331 case XGBE_MODE_KX_2500:
2332 xgbe_phy_kx_2500_mode(pdata);
2333 break;
2334 case XGBE_MODE_KR:
2335 xgbe_phy_kr_mode(pdata);
2336 break;
2337 case XGBE_MODE_SGMII_100:
2338 xgbe_phy_sgmii_100_mode(pdata);
2339 break;
2340 case XGBE_MODE_SGMII_1000:
2341 xgbe_phy_sgmii_1000_mode(pdata);
2342 break;
2343 case XGBE_MODE_X:
2344 xgbe_phy_x_mode(pdata);
2345 break;
2346 case XGBE_MODE_SFI:
2347 xgbe_phy_sfi_mode(pdata);
2348 break;
2349 default:
2350 break;
2351 }
2352 }
2353
xgbe_phy_check_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode,bool advert)2354 static bool xgbe_phy_check_mode(struct xgbe_prv_data *pdata,
2355 enum xgbe_mode mode, bool advert)
2356 {
2357 if (pdata->phy.autoneg == AUTONEG_ENABLE) {
2358 return advert;
2359 } else {
2360 enum xgbe_mode cur_mode;
2361
2362 cur_mode = xgbe_phy_get_mode(pdata, pdata->phy.speed);
2363 if (cur_mode == mode)
2364 return true;
2365 }
2366
2367 return false;
2368 }
2369
xgbe_phy_use_basex_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2370 static bool xgbe_phy_use_basex_mode(struct xgbe_prv_data *pdata,
2371 enum xgbe_mode mode)
2372 {
2373 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
2374
2375 switch (mode) {
2376 case XGBE_MODE_X:
2377 return xgbe_phy_check_mode(pdata, mode,
2378 XGBE_ADV(lks, 1000baseX_Full));
2379 case XGBE_MODE_KR:
2380 return xgbe_phy_check_mode(pdata, mode,
2381 XGBE_ADV(lks, 10000baseKR_Full));
2382 default:
2383 return false;
2384 }
2385 }
2386
xgbe_phy_use_baset_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2387 static bool xgbe_phy_use_baset_mode(struct xgbe_prv_data *pdata,
2388 enum xgbe_mode mode)
2389 {
2390 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
2391
2392 switch (mode) {
2393 case XGBE_MODE_SGMII_100:
2394 return xgbe_phy_check_mode(pdata, mode,
2395 XGBE_ADV(lks, 100baseT_Full));
2396 case XGBE_MODE_SGMII_1000:
2397 return xgbe_phy_check_mode(pdata, mode,
2398 XGBE_ADV(lks, 1000baseT_Full));
2399 case XGBE_MODE_KX_2500:
2400 return xgbe_phy_check_mode(pdata, mode,
2401 XGBE_ADV(lks, 2500baseT_Full));
2402 case XGBE_MODE_KR:
2403 return xgbe_phy_check_mode(pdata, mode,
2404 XGBE_ADV(lks, 10000baseT_Full));
2405 default:
2406 return false;
2407 }
2408 }
2409
xgbe_phy_use_sfp_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2410 static bool xgbe_phy_use_sfp_mode(struct xgbe_prv_data *pdata,
2411 enum xgbe_mode mode)
2412 {
2413 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
2414 struct xgbe_phy_data *phy_data = pdata->phy_data;
2415
2416 switch (mode) {
2417 case XGBE_MODE_X:
2418 if (phy_data->sfp_base == XGBE_SFP_BASE_1000_T)
2419 return false;
2420 return xgbe_phy_check_mode(pdata, mode,
2421 XGBE_ADV(lks, 1000baseX_Full));
2422 case XGBE_MODE_SGMII_100:
2423 if (phy_data->sfp_base != XGBE_SFP_BASE_1000_T)
2424 return false;
2425 return xgbe_phy_check_mode(pdata, mode,
2426 XGBE_ADV(lks, 100baseT_Full));
2427 case XGBE_MODE_SGMII_1000:
2428 if (phy_data->sfp_base != XGBE_SFP_BASE_1000_T)
2429 return false;
2430 return xgbe_phy_check_mode(pdata, mode,
2431 XGBE_ADV(lks, 1000baseT_Full));
2432 case XGBE_MODE_SFI:
2433 if (phy_data->sfp_mod_absent)
2434 return true;
2435 return xgbe_phy_check_mode(pdata, mode,
2436 XGBE_ADV(lks, 10000baseSR_Full) ||
2437 XGBE_ADV(lks, 10000baseLR_Full) ||
2438 XGBE_ADV(lks, 10000baseLRM_Full) ||
2439 XGBE_ADV(lks, 10000baseER_Full) ||
2440 XGBE_ADV(lks, 10000baseCR_Full));
2441 default:
2442 return false;
2443 }
2444 }
2445
xgbe_phy_use_bp_2500_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2446 static bool xgbe_phy_use_bp_2500_mode(struct xgbe_prv_data *pdata,
2447 enum xgbe_mode mode)
2448 {
2449 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
2450
2451 switch (mode) {
2452 case XGBE_MODE_KX_2500:
2453 return xgbe_phy_check_mode(pdata, mode,
2454 XGBE_ADV(lks, 2500baseX_Full));
2455 default:
2456 return false;
2457 }
2458 }
2459
xgbe_phy_use_bp_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2460 static bool xgbe_phy_use_bp_mode(struct xgbe_prv_data *pdata,
2461 enum xgbe_mode mode)
2462 {
2463 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
2464
2465 switch (mode) {
2466 case XGBE_MODE_KX_1000:
2467 return xgbe_phy_check_mode(pdata, mode,
2468 XGBE_ADV(lks, 1000baseKX_Full));
2469 case XGBE_MODE_KR:
2470 return xgbe_phy_check_mode(pdata, mode,
2471 XGBE_ADV(lks, 10000baseKR_Full));
2472 default:
2473 return false;
2474 }
2475 }
2476
xgbe_phy_use_mode(struct xgbe_prv_data * pdata,enum xgbe_mode mode)2477 static bool xgbe_phy_use_mode(struct xgbe_prv_data *pdata, enum xgbe_mode mode)
2478 {
2479 struct xgbe_phy_data *phy_data = pdata->phy_data;
2480
2481 switch (phy_data->port_mode) {
2482 case XGBE_PORT_MODE_BACKPLANE:
2483 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2484 return xgbe_phy_use_bp_mode(pdata, mode);
2485 case XGBE_PORT_MODE_BACKPLANE_2500:
2486 return xgbe_phy_use_bp_2500_mode(pdata, mode);
2487 case XGBE_PORT_MODE_1000BASE_T:
2488 case XGBE_PORT_MODE_NBASE_T:
2489 case XGBE_PORT_MODE_10GBASE_T:
2490 return xgbe_phy_use_baset_mode(pdata, mode);
2491 case XGBE_PORT_MODE_1000BASE_X:
2492 case XGBE_PORT_MODE_10GBASE_R:
2493 return xgbe_phy_use_basex_mode(pdata, mode);
2494 case XGBE_PORT_MODE_SFP:
2495 return xgbe_phy_use_sfp_mode(pdata, mode);
2496 default:
2497 return false;
2498 }
2499 }
2500
xgbe_phy_valid_speed_basex_mode(struct xgbe_phy_data * phy_data,int speed)2501 static bool xgbe_phy_valid_speed_basex_mode(struct xgbe_phy_data *phy_data,
2502 int speed)
2503 {
2504 switch (speed) {
2505 case SPEED_1000:
2506 return (phy_data->port_mode == XGBE_PORT_MODE_1000BASE_X);
2507 case SPEED_10000:
2508 return (phy_data->port_mode == XGBE_PORT_MODE_10GBASE_R);
2509 default:
2510 return false;
2511 }
2512 }
2513
xgbe_phy_valid_speed_baset_mode(struct xgbe_phy_data * phy_data,int speed)2514 static bool xgbe_phy_valid_speed_baset_mode(struct xgbe_phy_data *phy_data,
2515 int speed)
2516 {
2517 switch (speed) {
2518 case SPEED_100:
2519 case SPEED_1000:
2520 return true;
2521 case SPEED_2500:
2522 return (phy_data->port_mode == XGBE_PORT_MODE_NBASE_T);
2523 case SPEED_10000:
2524 return (phy_data->port_mode == XGBE_PORT_MODE_10GBASE_T);
2525 default:
2526 return false;
2527 }
2528 }
2529
xgbe_phy_valid_speed_sfp_mode(struct xgbe_phy_data * phy_data,int speed)2530 static bool xgbe_phy_valid_speed_sfp_mode(struct xgbe_phy_data *phy_data,
2531 int speed)
2532 {
2533 switch (speed) {
2534 case SPEED_100:
2535 return (phy_data->sfp_speed == XGBE_SFP_SPEED_100_1000);
2536 case SPEED_1000:
2537 return ((phy_data->sfp_speed == XGBE_SFP_SPEED_100_1000) ||
2538 (phy_data->sfp_speed == XGBE_SFP_SPEED_1000));
2539 case SPEED_10000:
2540 return (phy_data->sfp_speed == XGBE_SFP_SPEED_10000);
2541 default:
2542 return false;
2543 }
2544 }
2545
xgbe_phy_valid_speed_bp_2500_mode(int speed)2546 static bool xgbe_phy_valid_speed_bp_2500_mode(int speed)
2547 {
2548 switch (speed) {
2549 case SPEED_2500:
2550 return true;
2551 default:
2552 return false;
2553 }
2554 }
2555
xgbe_phy_valid_speed_bp_mode(int speed)2556 static bool xgbe_phy_valid_speed_bp_mode(int speed)
2557 {
2558 switch (speed) {
2559 case SPEED_1000:
2560 case SPEED_10000:
2561 return true;
2562 default:
2563 return false;
2564 }
2565 }
2566
xgbe_phy_valid_speed(struct xgbe_prv_data * pdata,int speed)2567 static bool xgbe_phy_valid_speed(struct xgbe_prv_data *pdata, int speed)
2568 {
2569 struct xgbe_phy_data *phy_data = pdata->phy_data;
2570
2571 switch (phy_data->port_mode) {
2572 case XGBE_PORT_MODE_BACKPLANE:
2573 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2574 return xgbe_phy_valid_speed_bp_mode(speed);
2575 case XGBE_PORT_MODE_BACKPLANE_2500:
2576 return xgbe_phy_valid_speed_bp_2500_mode(speed);
2577 case XGBE_PORT_MODE_1000BASE_T:
2578 case XGBE_PORT_MODE_NBASE_T:
2579 case XGBE_PORT_MODE_10GBASE_T:
2580 return xgbe_phy_valid_speed_baset_mode(phy_data, speed);
2581 case XGBE_PORT_MODE_1000BASE_X:
2582 case XGBE_PORT_MODE_10GBASE_R:
2583 return xgbe_phy_valid_speed_basex_mode(phy_data, speed);
2584 case XGBE_PORT_MODE_SFP:
2585 return xgbe_phy_valid_speed_sfp_mode(phy_data, speed);
2586 default:
2587 return false;
2588 }
2589 }
2590
xgbe_phy_link_status(struct xgbe_prv_data * pdata,int * an_restart)2591 static int xgbe_phy_link_status(struct xgbe_prv_data *pdata, int *an_restart)
2592 {
2593 struct xgbe_phy_data *phy_data = pdata->phy_data;
2594 unsigned int reg;
2595 int ret;
2596
2597 *an_restart = 0;
2598
2599 if (phy_data->port_mode == XGBE_PORT_MODE_SFP) {
2600 /* Check SFP signals */
2601 xgbe_phy_sfp_detect(pdata);
2602
2603 if (phy_data->sfp_changed) {
2604 *an_restart = 1;
2605 return 0;
2606 }
2607
2608 if (phy_data->sfp_mod_absent || phy_data->sfp_rx_los)
2609 return 0;
2610 }
2611
2612 if (phy_data->phydev) {
2613 /* Check external PHY */
2614 ret = phy_read_status(phy_data->phydev);
2615 if (ret < 0)
2616 return 0;
2617
2618 if ((pdata->phy.autoneg == AUTONEG_ENABLE) &&
2619 !phy_aneg_done(phy_data->phydev))
2620 return 0;
2621
2622 if (!phy_data->phydev->link)
2623 return 0;
2624 }
2625
2626 /* Link status is latched low, so read once to clear
2627 * and then read again to get current state
2628 */
2629 reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1);
2630 reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1);
2631 if (reg & MDIO_STAT1_LSTATUS)
2632 return 1;
2633
2634 if (pdata->phy.autoneg == AUTONEG_ENABLE &&
2635 phy_data->port_mode == XGBE_PORT_MODE_BACKPLANE) {
2636 if (!test_bit(XGBE_LINK_INIT, &pdata->dev_state)) {
2637 netif_carrier_off(pdata->netdev);
2638 *an_restart = 1;
2639 }
2640 }
2641
2642 /* No link, attempt a receiver reset cycle */
2643 if (phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) {
2644 phy_data->rrc_count = 0;
2645 xgbe_phy_rrc(pdata);
2646 }
2647
2648 return 0;
2649 }
2650
xgbe_phy_sfp_gpio_setup(struct xgbe_prv_data * pdata)2651 static void xgbe_phy_sfp_gpio_setup(struct xgbe_prv_data *pdata)
2652 {
2653 struct xgbe_phy_data *phy_data = pdata->phy_data;
2654
2655 phy_data->sfp_gpio_address = XGBE_GPIO_ADDRESS_PCA9555 +
2656 XP_GET_BITS(pdata->pp3, XP_PROP_3,
2657 GPIO_ADDR);
2658
2659 phy_data->sfp_gpio_mask = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2660 GPIO_MASK);
2661
2662 phy_data->sfp_gpio_rx_los = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2663 GPIO_RX_LOS);
2664 phy_data->sfp_gpio_tx_fault = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2665 GPIO_TX_FAULT);
2666 phy_data->sfp_gpio_mod_absent = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2667 GPIO_MOD_ABS);
2668 phy_data->sfp_gpio_rate_select = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2669 GPIO_RATE_SELECT);
2670
2671 if (netif_msg_probe(pdata)) {
2672 dev_dbg(pdata->dev, "SFP: gpio_address=%#x\n",
2673 phy_data->sfp_gpio_address);
2674 dev_dbg(pdata->dev, "SFP: gpio_mask=%#x\n",
2675 phy_data->sfp_gpio_mask);
2676 dev_dbg(pdata->dev, "SFP: gpio_rx_los=%u\n",
2677 phy_data->sfp_gpio_rx_los);
2678 dev_dbg(pdata->dev, "SFP: gpio_tx_fault=%u\n",
2679 phy_data->sfp_gpio_tx_fault);
2680 dev_dbg(pdata->dev, "SFP: gpio_mod_absent=%u\n",
2681 phy_data->sfp_gpio_mod_absent);
2682 dev_dbg(pdata->dev, "SFP: gpio_rate_select=%u\n",
2683 phy_data->sfp_gpio_rate_select);
2684 }
2685 }
2686
xgbe_phy_sfp_comm_setup(struct xgbe_prv_data * pdata)2687 static void xgbe_phy_sfp_comm_setup(struct xgbe_prv_data *pdata)
2688 {
2689 struct xgbe_phy_data *phy_data = pdata->phy_data;
2690 unsigned int mux_addr_hi, mux_addr_lo;
2691
2692 mux_addr_hi = XP_GET_BITS(pdata->pp4, XP_PROP_4, MUX_ADDR_HI);
2693 mux_addr_lo = XP_GET_BITS(pdata->pp4, XP_PROP_4, MUX_ADDR_LO);
2694 if (mux_addr_lo == XGBE_SFP_DIRECT)
2695 return;
2696
2697 phy_data->sfp_comm = XGBE_SFP_COMM_PCA9545;
2698 phy_data->sfp_mux_address = (mux_addr_hi << 2) + mux_addr_lo;
2699 phy_data->sfp_mux_channel = XP_GET_BITS(pdata->pp4, XP_PROP_4,
2700 MUX_CHAN);
2701
2702 if (netif_msg_probe(pdata)) {
2703 dev_dbg(pdata->dev, "SFP: mux_address=%#x\n",
2704 phy_data->sfp_mux_address);
2705 dev_dbg(pdata->dev, "SFP: mux_channel=%u\n",
2706 phy_data->sfp_mux_channel);
2707 }
2708 }
2709
xgbe_phy_sfp_setup(struct xgbe_prv_data * pdata)2710 static void xgbe_phy_sfp_setup(struct xgbe_prv_data *pdata)
2711 {
2712 xgbe_phy_sfp_comm_setup(pdata);
2713 xgbe_phy_sfp_gpio_setup(pdata);
2714 }
2715
xgbe_phy_int_mdio_reset(struct xgbe_prv_data * pdata)2716 static int xgbe_phy_int_mdio_reset(struct xgbe_prv_data *pdata)
2717 {
2718 struct xgbe_phy_data *phy_data = pdata->phy_data;
2719 unsigned int ret;
2720
2721 ret = pdata->hw_if.set_gpio(pdata, phy_data->mdio_reset_gpio);
2722 if (ret)
2723 return ret;
2724
2725 ret = pdata->hw_if.clr_gpio(pdata, phy_data->mdio_reset_gpio);
2726
2727 return ret;
2728 }
2729
xgbe_phy_i2c_mdio_reset(struct xgbe_prv_data * pdata)2730 static int xgbe_phy_i2c_mdio_reset(struct xgbe_prv_data *pdata)
2731 {
2732 struct xgbe_phy_data *phy_data = pdata->phy_data;
2733 u8 gpio_reg, gpio_ports[2], gpio_data[3];
2734 int ret;
2735
2736 /* Read the output port registers */
2737 gpio_reg = 2;
2738 ret = xgbe_phy_i2c_read(pdata, phy_data->mdio_reset_addr,
2739 &gpio_reg, sizeof(gpio_reg),
2740 gpio_ports, sizeof(gpio_ports));
2741 if (ret)
2742 return ret;
2743
2744 /* Prepare to write the GPIO data */
2745 gpio_data[0] = 2;
2746 gpio_data[1] = gpio_ports[0];
2747 gpio_data[2] = gpio_ports[1];
2748
2749 /* Set the GPIO pin */
2750 if (phy_data->mdio_reset_gpio < 8)
2751 gpio_data[1] |= (1 << (phy_data->mdio_reset_gpio % 8));
2752 else
2753 gpio_data[2] |= (1 << (phy_data->mdio_reset_gpio % 8));
2754
2755 /* Write the output port registers */
2756 ret = xgbe_phy_i2c_write(pdata, phy_data->mdio_reset_addr,
2757 gpio_data, sizeof(gpio_data));
2758 if (ret)
2759 return ret;
2760
2761 /* Clear the GPIO pin */
2762 if (phy_data->mdio_reset_gpio < 8)
2763 gpio_data[1] &= ~(1 << (phy_data->mdio_reset_gpio % 8));
2764 else
2765 gpio_data[2] &= ~(1 << (phy_data->mdio_reset_gpio % 8));
2766
2767 /* Write the output port registers */
2768 ret = xgbe_phy_i2c_write(pdata, phy_data->mdio_reset_addr,
2769 gpio_data, sizeof(gpio_data));
2770
2771 return ret;
2772 }
2773
xgbe_phy_mdio_reset(struct xgbe_prv_data * pdata)2774 static int xgbe_phy_mdio_reset(struct xgbe_prv_data *pdata)
2775 {
2776 struct xgbe_phy_data *phy_data = pdata->phy_data;
2777 int ret;
2778
2779 if (phy_data->conn_type != XGBE_CONN_TYPE_MDIO)
2780 return 0;
2781
2782 ret = xgbe_phy_get_comm_ownership(pdata);
2783 if (ret)
2784 return ret;
2785
2786 if (phy_data->mdio_reset == XGBE_MDIO_RESET_I2C_GPIO)
2787 ret = xgbe_phy_i2c_mdio_reset(pdata);
2788 else if (phy_data->mdio_reset == XGBE_MDIO_RESET_INT_GPIO)
2789 ret = xgbe_phy_int_mdio_reset(pdata);
2790
2791 xgbe_phy_put_comm_ownership(pdata);
2792
2793 return ret;
2794 }
2795
xgbe_phy_redrv_error(struct xgbe_phy_data * phy_data)2796 static bool xgbe_phy_redrv_error(struct xgbe_phy_data *phy_data)
2797 {
2798 if (!phy_data->redrv)
2799 return false;
2800
2801 if (phy_data->redrv_if >= XGBE_PHY_REDRV_IF_MAX)
2802 return true;
2803
2804 switch (phy_data->redrv_model) {
2805 case XGBE_PHY_REDRV_MODEL_4223:
2806 if (phy_data->redrv_lane > 3)
2807 return true;
2808 break;
2809 case XGBE_PHY_REDRV_MODEL_4227:
2810 if (phy_data->redrv_lane > 1)
2811 return true;
2812 break;
2813 default:
2814 return true;
2815 }
2816
2817 return false;
2818 }
2819
xgbe_phy_mdio_reset_setup(struct xgbe_prv_data * pdata)2820 static int xgbe_phy_mdio_reset_setup(struct xgbe_prv_data *pdata)
2821 {
2822 struct xgbe_phy_data *phy_data = pdata->phy_data;
2823
2824 if (phy_data->conn_type != XGBE_CONN_TYPE_MDIO)
2825 return 0;
2826
2827 phy_data->mdio_reset = XP_GET_BITS(pdata->pp3, XP_PROP_3, MDIO_RESET);
2828 switch (phy_data->mdio_reset) {
2829 case XGBE_MDIO_RESET_NONE:
2830 case XGBE_MDIO_RESET_I2C_GPIO:
2831 case XGBE_MDIO_RESET_INT_GPIO:
2832 break;
2833 default:
2834 dev_err(pdata->dev, "unsupported MDIO reset (%#x)\n",
2835 phy_data->mdio_reset);
2836 return -EINVAL;
2837 }
2838
2839 if (phy_data->mdio_reset == XGBE_MDIO_RESET_I2C_GPIO) {
2840 phy_data->mdio_reset_addr = XGBE_GPIO_ADDRESS_PCA9555 +
2841 XP_GET_BITS(pdata->pp3, XP_PROP_3,
2842 MDIO_RESET_I2C_ADDR);
2843 phy_data->mdio_reset_gpio = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2844 MDIO_RESET_I2C_GPIO);
2845 } else if (phy_data->mdio_reset == XGBE_MDIO_RESET_INT_GPIO) {
2846 phy_data->mdio_reset_gpio = XP_GET_BITS(pdata->pp3, XP_PROP_3,
2847 MDIO_RESET_INT_GPIO);
2848 }
2849
2850 return 0;
2851 }
2852
xgbe_phy_port_mode_mismatch(struct xgbe_prv_data * pdata)2853 static bool xgbe_phy_port_mode_mismatch(struct xgbe_prv_data *pdata)
2854 {
2855 struct xgbe_phy_data *phy_data = pdata->phy_data;
2856
2857 switch (phy_data->port_mode) {
2858 case XGBE_PORT_MODE_BACKPLANE:
2859 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2860 if ((phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) ||
2861 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000))
2862 return false;
2863 break;
2864 case XGBE_PORT_MODE_BACKPLANE_2500:
2865 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_2500)
2866 return false;
2867 break;
2868 case XGBE_PORT_MODE_1000BASE_T:
2869 if ((phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) ||
2870 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000))
2871 return false;
2872 break;
2873 case XGBE_PORT_MODE_1000BASE_X:
2874 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000)
2875 return false;
2876 break;
2877 case XGBE_PORT_MODE_NBASE_T:
2878 if ((phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) ||
2879 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) ||
2880 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_2500))
2881 return false;
2882 break;
2883 case XGBE_PORT_MODE_10GBASE_T:
2884 if ((phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) ||
2885 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) ||
2886 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000))
2887 return false;
2888 break;
2889 case XGBE_PORT_MODE_10GBASE_R:
2890 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000)
2891 return false;
2892 break;
2893 case XGBE_PORT_MODE_SFP:
2894 if ((phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) ||
2895 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) ||
2896 (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000))
2897 return false;
2898 break;
2899 default:
2900 break;
2901 }
2902
2903 return true;
2904 }
2905
xgbe_phy_conn_type_mismatch(struct xgbe_prv_data * pdata)2906 static bool xgbe_phy_conn_type_mismatch(struct xgbe_prv_data *pdata)
2907 {
2908 struct xgbe_phy_data *phy_data = pdata->phy_data;
2909
2910 switch (phy_data->port_mode) {
2911 case XGBE_PORT_MODE_BACKPLANE:
2912 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
2913 case XGBE_PORT_MODE_BACKPLANE_2500:
2914 if (phy_data->conn_type == XGBE_CONN_TYPE_BACKPLANE)
2915 return false;
2916 break;
2917 case XGBE_PORT_MODE_1000BASE_T:
2918 case XGBE_PORT_MODE_1000BASE_X:
2919 case XGBE_PORT_MODE_NBASE_T:
2920 case XGBE_PORT_MODE_10GBASE_T:
2921 case XGBE_PORT_MODE_10GBASE_R:
2922 if (phy_data->conn_type == XGBE_CONN_TYPE_MDIO)
2923 return false;
2924 break;
2925 case XGBE_PORT_MODE_SFP:
2926 if (phy_data->conn_type == XGBE_CONN_TYPE_SFP)
2927 return false;
2928 break;
2929 default:
2930 break;
2931 }
2932
2933 return true;
2934 }
2935
xgbe_phy_port_enabled(struct xgbe_prv_data * pdata)2936 static bool xgbe_phy_port_enabled(struct xgbe_prv_data *pdata)
2937 {
2938 if (!XP_GET_BITS(pdata->pp0, XP_PROP_0, PORT_SPEEDS))
2939 return false;
2940 if (!XP_GET_BITS(pdata->pp0, XP_PROP_0, CONN_TYPE))
2941 return false;
2942
2943 return true;
2944 }
2945
xgbe_phy_cdr_track(struct xgbe_prv_data * pdata)2946 static void xgbe_phy_cdr_track(struct xgbe_prv_data *pdata)
2947 {
2948 struct xgbe_phy_data *phy_data = pdata->phy_data;
2949
2950 if (!pdata->debugfs_an_cdr_workaround)
2951 return;
2952
2953 if (!phy_data->phy_cdr_notrack)
2954 return;
2955
2956 usleep_range(phy_data->phy_cdr_delay,
2957 phy_data->phy_cdr_delay + 500);
2958
2959 XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_CDR_CONTROL,
2960 XGBE_PMA_CDR_TRACK_EN_MASK,
2961 XGBE_PMA_CDR_TRACK_EN_ON);
2962
2963 phy_data->phy_cdr_notrack = 0;
2964 }
2965
xgbe_phy_cdr_notrack(struct xgbe_prv_data * pdata)2966 static void xgbe_phy_cdr_notrack(struct xgbe_prv_data *pdata)
2967 {
2968 struct xgbe_phy_data *phy_data = pdata->phy_data;
2969
2970 if (!pdata->debugfs_an_cdr_workaround)
2971 return;
2972
2973 if (phy_data->phy_cdr_notrack)
2974 return;
2975
2976 XMDIO_WRITE_BITS(pdata, MDIO_MMD_PMAPMD, MDIO_VEND2_PMA_CDR_CONTROL,
2977 XGBE_PMA_CDR_TRACK_EN_MASK,
2978 XGBE_PMA_CDR_TRACK_EN_OFF);
2979
2980 xgbe_phy_rrc(pdata);
2981
2982 phy_data->phy_cdr_notrack = 1;
2983 }
2984
xgbe_phy_kr_training_post(struct xgbe_prv_data * pdata)2985 static void xgbe_phy_kr_training_post(struct xgbe_prv_data *pdata)
2986 {
2987 if (!pdata->debugfs_an_cdr_track_early)
2988 xgbe_phy_cdr_track(pdata);
2989 }
2990
xgbe_phy_kr_training_pre(struct xgbe_prv_data * pdata)2991 static void xgbe_phy_kr_training_pre(struct xgbe_prv_data *pdata)
2992 {
2993 if (pdata->debugfs_an_cdr_track_early)
2994 xgbe_phy_cdr_track(pdata);
2995 }
2996
xgbe_phy_an_post(struct xgbe_prv_data * pdata)2997 static void xgbe_phy_an_post(struct xgbe_prv_data *pdata)
2998 {
2999 struct xgbe_phy_data *phy_data = pdata->phy_data;
3000
3001 switch (pdata->an_mode) {
3002 case XGBE_AN_MODE_CL73:
3003 case XGBE_AN_MODE_CL73_REDRV:
3004 if (phy_data->cur_mode != XGBE_MODE_KR)
3005 break;
3006
3007 xgbe_phy_cdr_track(pdata);
3008
3009 switch (pdata->an_result) {
3010 case XGBE_AN_READY:
3011 case XGBE_AN_COMPLETE:
3012 break;
3013 default:
3014 if (phy_data->phy_cdr_delay < XGBE_CDR_DELAY_MAX)
3015 phy_data->phy_cdr_delay += XGBE_CDR_DELAY_INC;
3016 else
3017 phy_data->phy_cdr_delay = XGBE_CDR_DELAY_INIT;
3018 break;
3019 }
3020 break;
3021 default:
3022 break;
3023 }
3024 }
3025
xgbe_phy_an_pre(struct xgbe_prv_data * pdata)3026 static void xgbe_phy_an_pre(struct xgbe_prv_data *pdata)
3027 {
3028 struct xgbe_phy_data *phy_data = pdata->phy_data;
3029
3030 switch (pdata->an_mode) {
3031 case XGBE_AN_MODE_CL73:
3032 case XGBE_AN_MODE_CL73_REDRV:
3033 if (phy_data->cur_mode != XGBE_MODE_KR)
3034 break;
3035
3036 xgbe_phy_cdr_notrack(pdata);
3037 break;
3038 default:
3039 break;
3040 }
3041 }
3042
xgbe_phy_stop(struct xgbe_prv_data * pdata)3043 static void xgbe_phy_stop(struct xgbe_prv_data *pdata)
3044 {
3045 struct xgbe_phy_data *phy_data = pdata->phy_data;
3046
3047 /* If we have an external PHY, free it */
3048 xgbe_phy_free_phy_device(pdata);
3049
3050 /* Reset SFP data */
3051 xgbe_phy_sfp_reset(phy_data);
3052 xgbe_phy_sfp_mod_absent(pdata);
3053
3054 /* Reset CDR support */
3055 xgbe_phy_cdr_track(pdata);
3056
3057 /* Power off the PHY */
3058 xgbe_phy_power_off(pdata);
3059
3060 /* Stop the I2C controller */
3061 pdata->i2c_if.i2c_stop(pdata);
3062 }
3063
xgbe_phy_start(struct xgbe_prv_data * pdata)3064 static int xgbe_phy_start(struct xgbe_prv_data *pdata)
3065 {
3066 struct xgbe_phy_data *phy_data = pdata->phy_data;
3067 int ret;
3068
3069 /* Start the I2C controller */
3070 ret = pdata->i2c_if.i2c_start(pdata);
3071 if (ret)
3072 return ret;
3073
3074 /* Set the proper MDIO mode for the re-driver */
3075 if (phy_data->redrv && !phy_data->redrv_if) {
3076 ret = pdata->hw_if.set_ext_mii_mode(pdata, phy_data->redrv_addr,
3077 XGBE_MDIO_MODE_CL22);
3078 if (ret) {
3079 netdev_err(pdata->netdev,
3080 "redriver mdio port not compatible (%u)\n",
3081 phy_data->redrv_addr);
3082 return ret;
3083 }
3084 }
3085
3086 /* Start in highest supported mode */
3087 xgbe_phy_set_mode(pdata, phy_data->start_mode);
3088
3089 /* Reset CDR support */
3090 xgbe_phy_cdr_track(pdata);
3091
3092 /* After starting the I2C controller, we can check for an SFP */
3093 switch (phy_data->port_mode) {
3094 case XGBE_PORT_MODE_SFP:
3095 xgbe_phy_sfp_detect(pdata);
3096 break;
3097 default:
3098 break;
3099 }
3100
3101 /* If we have an external PHY, start it */
3102 ret = xgbe_phy_find_phy_device(pdata);
3103 if (ret)
3104 goto err_i2c;
3105
3106 return 0;
3107
3108 err_i2c:
3109 pdata->i2c_if.i2c_stop(pdata);
3110
3111 return ret;
3112 }
3113
xgbe_phy_reset(struct xgbe_prv_data * pdata)3114 static int xgbe_phy_reset(struct xgbe_prv_data *pdata)
3115 {
3116 struct xgbe_phy_data *phy_data = pdata->phy_data;
3117 enum xgbe_mode cur_mode;
3118 int ret;
3119
3120 /* Reset by power cycling the PHY */
3121 cur_mode = phy_data->cur_mode;
3122 xgbe_phy_power_off(pdata);
3123 xgbe_phy_set_mode(pdata, cur_mode);
3124
3125 if (!phy_data->phydev)
3126 return 0;
3127
3128 /* Reset the external PHY */
3129 ret = xgbe_phy_mdio_reset(pdata);
3130 if (ret)
3131 return ret;
3132
3133 return phy_init_hw(phy_data->phydev);
3134 }
3135
xgbe_phy_exit(struct xgbe_prv_data * pdata)3136 static void xgbe_phy_exit(struct xgbe_prv_data *pdata)
3137 {
3138 struct xgbe_phy_data *phy_data = pdata->phy_data;
3139
3140 /* Unregister for driving external PHYs */
3141 mdiobus_unregister(phy_data->mii);
3142 }
3143
xgbe_phy_init(struct xgbe_prv_data * pdata)3144 static int xgbe_phy_init(struct xgbe_prv_data *pdata)
3145 {
3146 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
3147 struct xgbe_phy_data *phy_data;
3148 struct mii_bus *mii;
3149 int ret;
3150
3151 /* Check if enabled */
3152 if (!xgbe_phy_port_enabled(pdata)) {
3153 dev_info(pdata->dev, "device is not enabled\n");
3154 return -ENODEV;
3155 }
3156
3157 /* Initialize the I2C controller */
3158 ret = pdata->i2c_if.i2c_init(pdata);
3159 if (ret)
3160 return ret;
3161
3162 phy_data = devm_kzalloc(pdata->dev, sizeof(*phy_data), GFP_KERNEL);
3163 if (!phy_data)
3164 return -ENOMEM;
3165 pdata->phy_data = phy_data;
3166
3167 phy_data->port_mode = XP_GET_BITS(pdata->pp0, XP_PROP_0, PORT_MODE);
3168 phy_data->port_id = XP_GET_BITS(pdata->pp0, XP_PROP_0, PORT_ID);
3169 phy_data->port_speeds = XP_GET_BITS(pdata->pp0, XP_PROP_0, PORT_SPEEDS);
3170 phy_data->conn_type = XP_GET_BITS(pdata->pp0, XP_PROP_0, CONN_TYPE);
3171 phy_data->mdio_addr = XP_GET_BITS(pdata->pp0, XP_PROP_0, MDIO_ADDR);
3172 if (netif_msg_probe(pdata)) {
3173 dev_dbg(pdata->dev, "port mode=%u\n", phy_data->port_mode);
3174 dev_dbg(pdata->dev, "port id=%u\n", phy_data->port_id);
3175 dev_dbg(pdata->dev, "port speeds=%#x\n", phy_data->port_speeds);
3176 dev_dbg(pdata->dev, "conn type=%u\n", phy_data->conn_type);
3177 dev_dbg(pdata->dev, "mdio addr=%u\n", phy_data->mdio_addr);
3178 }
3179
3180 phy_data->redrv = XP_GET_BITS(pdata->pp4, XP_PROP_4, REDRV_PRESENT);
3181 phy_data->redrv_if = XP_GET_BITS(pdata->pp4, XP_PROP_4, REDRV_IF);
3182 phy_data->redrv_addr = XP_GET_BITS(pdata->pp4, XP_PROP_4, REDRV_ADDR);
3183 phy_data->redrv_lane = XP_GET_BITS(pdata->pp4, XP_PROP_4, REDRV_LANE);
3184 phy_data->redrv_model = XP_GET_BITS(pdata->pp4, XP_PROP_4, REDRV_MODEL);
3185 if (phy_data->redrv && netif_msg_probe(pdata)) {
3186 dev_dbg(pdata->dev, "redrv present\n");
3187 dev_dbg(pdata->dev, "redrv i/f=%u\n", phy_data->redrv_if);
3188 dev_dbg(pdata->dev, "redrv addr=%#x\n", phy_data->redrv_addr);
3189 dev_dbg(pdata->dev, "redrv lane=%u\n", phy_data->redrv_lane);
3190 dev_dbg(pdata->dev, "redrv model=%u\n", phy_data->redrv_model);
3191 }
3192
3193 /* Validate the connection requested */
3194 if (xgbe_phy_conn_type_mismatch(pdata)) {
3195 dev_err(pdata->dev, "phy mode/connection mismatch (%#x/%#x)\n",
3196 phy_data->port_mode, phy_data->conn_type);
3197 return -EINVAL;
3198 }
3199
3200 /* Validate the mode requested */
3201 if (xgbe_phy_port_mode_mismatch(pdata)) {
3202 dev_err(pdata->dev, "phy mode/speed mismatch (%#x/%#x)\n",
3203 phy_data->port_mode, phy_data->port_speeds);
3204 return -EINVAL;
3205 }
3206
3207 /* Check for and validate MDIO reset support */
3208 ret = xgbe_phy_mdio_reset_setup(pdata);
3209 if (ret)
3210 return ret;
3211
3212 /* Validate the re-driver information */
3213 if (xgbe_phy_redrv_error(phy_data)) {
3214 dev_err(pdata->dev, "phy re-driver settings error\n");
3215 return -EINVAL;
3216 }
3217 pdata->kr_redrv = phy_data->redrv;
3218
3219 /* Indicate current mode is unknown */
3220 phy_data->cur_mode = XGBE_MODE_UNKNOWN;
3221
3222 /* Initialize supported features */
3223 XGBE_ZERO_SUP(lks);
3224
3225 switch (phy_data->port_mode) {
3226 /* Backplane support */
3227 case XGBE_PORT_MODE_BACKPLANE:
3228 XGBE_SET_SUP(lks, Autoneg);
3229 fallthrough;
3230 case XGBE_PORT_MODE_BACKPLANE_NO_AUTONEG:
3231 XGBE_SET_SUP(lks, Pause);
3232 XGBE_SET_SUP(lks, Asym_Pause);
3233 XGBE_SET_SUP(lks, Backplane);
3234 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) {
3235 XGBE_SET_SUP(lks, 1000baseKX_Full);
3236 phy_data->start_mode = XGBE_MODE_KX_1000;
3237 }
3238 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000) {
3239 XGBE_SET_SUP(lks, 10000baseKR_Full);
3240 if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE)
3241 XGBE_SET_SUP(lks, 10000baseR_FEC);
3242 phy_data->start_mode = XGBE_MODE_KR;
3243 }
3244
3245 phy_data->phydev_mode = XGBE_MDIO_MODE_NONE;
3246 break;
3247 case XGBE_PORT_MODE_BACKPLANE_2500:
3248 XGBE_SET_SUP(lks, Pause);
3249 XGBE_SET_SUP(lks, Asym_Pause);
3250 XGBE_SET_SUP(lks, Backplane);
3251 XGBE_SET_SUP(lks, 2500baseX_Full);
3252 phy_data->start_mode = XGBE_MODE_KX_2500;
3253
3254 phy_data->phydev_mode = XGBE_MDIO_MODE_NONE;
3255 break;
3256
3257 /* MDIO 1GBase-T support */
3258 case XGBE_PORT_MODE_1000BASE_T:
3259 XGBE_SET_SUP(lks, Autoneg);
3260 XGBE_SET_SUP(lks, Pause);
3261 XGBE_SET_SUP(lks, Asym_Pause);
3262 XGBE_SET_SUP(lks, TP);
3263 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) {
3264 XGBE_SET_SUP(lks, 100baseT_Full);
3265 phy_data->start_mode = XGBE_MODE_SGMII_100;
3266 }
3267 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) {
3268 XGBE_SET_SUP(lks, 1000baseT_Full);
3269 phy_data->start_mode = XGBE_MODE_SGMII_1000;
3270 }
3271
3272 phy_data->phydev_mode = XGBE_MDIO_MODE_CL22;
3273 break;
3274
3275 /* MDIO Base-X support */
3276 case XGBE_PORT_MODE_1000BASE_X:
3277 XGBE_SET_SUP(lks, Autoneg);
3278 XGBE_SET_SUP(lks, Pause);
3279 XGBE_SET_SUP(lks, Asym_Pause);
3280 XGBE_SET_SUP(lks, FIBRE);
3281 XGBE_SET_SUP(lks, 1000baseX_Full);
3282 phy_data->start_mode = XGBE_MODE_X;
3283
3284 phy_data->phydev_mode = XGBE_MDIO_MODE_CL22;
3285 break;
3286
3287 /* MDIO NBase-T support */
3288 case XGBE_PORT_MODE_NBASE_T:
3289 XGBE_SET_SUP(lks, Autoneg);
3290 XGBE_SET_SUP(lks, Pause);
3291 XGBE_SET_SUP(lks, Asym_Pause);
3292 XGBE_SET_SUP(lks, TP);
3293 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) {
3294 XGBE_SET_SUP(lks, 100baseT_Full);
3295 phy_data->start_mode = XGBE_MODE_SGMII_100;
3296 }
3297 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) {
3298 XGBE_SET_SUP(lks, 1000baseT_Full);
3299 phy_data->start_mode = XGBE_MODE_SGMII_1000;
3300 }
3301 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_2500) {
3302 XGBE_SET_SUP(lks, 2500baseT_Full);
3303 phy_data->start_mode = XGBE_MODE_KX_2500;
3304 }
3305
3306 phy_data->phydev_mode = XGBE_MDIO_MODE_CL45;
3307 break;
3308
3309 /* 10GBase-T support */
3310 case XGBE_PORT_MODE_10GBASE_T:
3311 XGBE_SET_SUP(lks, Autoneg);
3312 XGBE_SET_SUP(lks, Pause);
3313 XGBE_SET_SUP(lks, Asym_Pause);
3314 XGBE_SET_SUP(lks, TP);
3315 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100) {
3316 XGBE_SET_SUP(lks, 100baseT_Full);
3317 phy_data->start_mode = XGBE_MODE_SGMII_100;
3318 }
3319 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000) {
3320 XGBE_SET_SUP(lks, 1000baseT_Full);
3321 phy_data->start_mode = XGBE_MODE_SGMII_1000;
3322 }
3323 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000) {
3324 XGBE_SET_SUP(lks, 10000baseT_Full);
3325 phy_data->start_mode = XGBE_MODE_KR;
3326 }
3327
3328 phy_data->phydev_mode = XGBE_MDIO_MODE_CL45;
3329 break;
3330
3331 /* 10GBase-R support */
3332 case XGBE_PORT_MODE_10GBASE_R:
3333 XGBE_SET_SUP(lks, Autoneg);
3334 XGBE_SET_SUP(lks, Pause);
3335 XGBE_SET_SUP(lks, Asym_Pause);
3336 XGBE_SET_SUP(lks, FIBRE);
3337 XGBE_SET_SUP(lks, 10000baseSR_Full);
3338 XGBE_SET_SUP(lks, 10000baseLR_Full);
3339 XGBE_SET_SUP(lks, 10000baseLRM_Full);
3340 XGBE_SET_SUP(lks, 10000baseER_Full);
3341 if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE)
3342 XGBE_SET_SUP(lks, 10000baseR_FEC);
3343 phy_data->start_mode = XGBE_MODE_SFI;
3344
3345 phy_data->phydev_mode = XGBE_MDIO_MODE_NONE;
3346 break;
3347
3348 /* SFP support */
3349 case XGBE_PORT_MODE_SFP:
3350 XGBE_SET_SUP(lks, Autoneg);
3351 XGBE_SET_SUP(lks, Pause);
3352 XGBE_SET_SUP(lks, Asym_Pause);
3353 XGBE_SET_SUP(lks, TP);
3354 XGBE_SET_SUP(lks, FIBRE);
3355 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_100)
3356 phy_data->start_mode = XGBE_MODE_SGMII_100;
3357 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_1000)
3358 phy_data->start_mode = XGBE_MODE_SGMII_1000;
3359 if (phy_data->port_speeds & XGBE_PHY_PORT_SPEED_10000)
3360 phy_data->start_mode = XGBE_MODE_SFI;
3361
3362 phy_data->phydev_mode = XGBE_MDIO_MODE_CL22;
3363
3364 xgbe_phy_sfp_setup(pdata);
3365 break;
3366 default:
3367 return -EINVAL;
3368 }
3369
3370 if (netif_msg_probe(pdata))
3371 dev_dbg(pdata->dev, "phy supported=0x%*pb\n",
3372 __ETHTOOL_LINK_MODE_MASK_NBITS,
3373 lks->link_modes.supported);
3374
3375 if ((phy_data->conn_type & XGBE_CONN_TYPE_MDIO) &&
3376 (phy_data->phydev_mode != XGBE_MDIO_MODE_NONE)) {
3377 ret = pdata->hw_if.set_ext_mii_mode(pdata, phy_data->mdio_addr,
3378 phy_data->phydev_mode);
3379 if (ret) {
3380 dev_err(pdata->dev,
3381 "mdio port/clause not compatible (%d/%u)\n",
3382 phy_data->mdio_addr, phy_data->phydev_mode);
3383 return -EINVAL;
3384 }
3385 }
3386
3387 if (phy_data->redrv && !phy_data->redrv_if) {
3388 ret = pdata->hw_if.set_ext_mii_mode(pdata, phy_data->redrv_addr,
3389 XGBE_MDIO_MODE_CL22);
3390 if (ret) {
3391 dev_err(pdata->dev,
3392 "redriver mdio port not compatible (%u)\n",
3393 phy_data->redrv_addr);
3394 return -EINVAL;
3395 }
3396 }
3397
3398 phy_data->phy_cdr_delay = XGBE_CDR_DELAY_INIT;
3399
3400 /* Register for driving external PHYs */
3401 mii = devm_mdiobus_alloc(pdata->dev);
3402 if (!mii) {
3403 dev_err(pdata->dev, "mdiobus_alloc failed\n");
3404 return -ENOMEM;
3405 }
3406
3407 mii->priv = pdata;
3408 mii->name = "amd-xgbe-mii";
3409 mii->read = xgbe_phy_mii_read;
3410 mii->write = xgbe_phy_mii_write;
3411 mii->parent = pdata->dev;
3412 mii->phy_mask = ~0;
3413 snprintf(mii->id, sizeof(mii->id), "%s", dev_name(pdata->dev));
3414 ret = mdiobus_register(mii);
3415 if (ret) {
3416 dev_err(pdata->dev, "mdiobus_register failed\n");
3417 return ret;
3418 }
3419 phy_data->mii = mii;
3420
3421 return 0;
3422 }
3423
xgbe_init_function_ptrs_phy_v2(struct xgbe_phy_if * phy_if)3424 void xgbe_init_function_ptrs_phy_v2(struct xgbe_phy_if *phy_if)
3425 {
3426 struct xgbe_phy_impl_if *phy_impl = &phy_if->phy_impl;
3427
3428 phy_impl->init = xgbe_phy_init;
3429 phy_impl->exit = xgbe_phy_exit;
3430
3431 phy_impl->reset = xgbe_phy_reset;
3432 phy_impl->start = xgbe_phy_start;
3433 phy_impl->stop = xgbe_phy_stop;
3434
3435 phy_impl->link_status = xgbe_phy_link_status;
3436
3437 phy_impl->valid_speed = xgbe_phy_valid_speed;
3438
3439 phy_impl->use_mode = xgbe_phy_use_mode;
3440 phy_impl->set_mode = xgbe_phy_set_mode;
3441 phy_impl->get_mode = xgbe_phy_get_mode;
3442 phy_impl->switch_mode = xgbe_phy_switch_mode;
3443 phy_impl->cur_mode = xgbe_phy_cur_mode;
3444
3445 phy_impl->an_mode = xgbe_phy_an_mode;
3446
3447 phy_impl->an_config = xgbe_phy_an_config;
3448
3449 phy_impl->an_advertising = xgbe_phy_an_advertising;
3450
3451 phy_impl->an_outcome = xgbe_phy_an_outcome;
3452
3453 phy_impl->an_pre = xgbe_phy_an_pre;
3454 phy_impl->an_post = xgbe_phy_an_post;
3455
3456 phy_impl->kr_training_pre = xgbe_phy_kr_training_pre;
3457 phy_impl->kr_training_post = xgbe_phy_kr_training_post;
3458
3459 phy_impl->module_info = xgbe_phy_module_info;
3460 phy_impl->module_eeprom = xgbe_phy_module_eeprom;
3461 }
3462